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标题: Spring 注入集合 [打印本页]

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作者: 玛卡巴卡的卡巴卡玛    时间: 2023-9-13 01:27
标题: Spring 注入集合
使用标签的value属性配置原始数据类型和ref属性配置对象引用的方式来定义Bean配置文件。这两种情况都涉及将单一值传递给Bean。那么如果您想传递多个值，例如Java集合类型，如List、Set、Map和Properties怎么办？为了处理这种情况，Spring提供了四种类型的集合配置元素，如下所示：
序号元素 & 描述1用于注入一组值，允许重复。2用于注入一组值，但不允许重复。3可用于注入一组名称-值对，其中名称和值可以是任何类型。4可用于注入一组名称-值对，其中名称和值都是字符串。您可以使用或来注入java.util.Collection的任何实现或数组。
在处理集合时，通常会遇到两种情况：（a）传递集合的直接值和（b）将Bean的引用作为集合元素之一传递。
示例
假设您已经准备好Eclipse IDE，并采取以下步骤创建Spring应用程序：
步骤 描述
1 创建一个名为SpringExample的项目，在创建的项目中的src文件夹下创建一个名为com.tutorialspoint的包。
2 使用"Add External JARs"选项添加所需的Spring库，如Spring Hello World示例章节中所述。
3 在com.tutorialspoint包下创建Java类JavaCollection和MainApp。
4 在src文件夹下创建Beans配置文件Beans.xml。
5 最后一步是创建所有Java文件和Bean配置文件的内容，并按以下说明运行应用程序。
以下是JavaCollection.java文件的内容：

1. package com.tutorialspoint;
2. import java.util.*;
4. public class JavaCollection {
5. <bean id = "..." class = "exampleBean">
6. <bean id = "..." class = "exampleBean">
7.    <property name = "email"><null/></property>
8. </bean><property name = "email" value = ""/>
9. </bean>List addressList;
10. <bean id = "..." class = "exampleBean">
11. <bean id = "..." class = "exampleBean">
12.    <property name = "email"><null/></property>
13. </bean><property name = "email" value = ""/>
14. </bean>Set  addressSet;
15. <bean id = "..." class = "exampleBean">
16. <bean id = "..." class = "exampleBean">
17.    <property name = "email"><null/></property>
18. </bean><property name = "email" value = ""/>
19. </bean>Map  addressMap;
20. <bean id = "..." class = "exampleBean">
21. <bean id = "..." class = "exampleBean">
22.    <property name = "email"><null/></property>
23. </bean><property name = "email" value = ""/>
24. </bean>Properties addressProp;
26. <bean id = "..." class = "exampleBean">
27. <bean id = "..." class = "exampleBean">
28.    <property name = "email"><null/></property>
29. </bean><property name = "email" value = ""/>
30. </bean>// 用于设置List的setter方法
31. <bean id = "..." class = "exampleBean">
32. <bean id = "..." class = "exampleBean">
33.    <property name = "email"><null/></property>
34. </bean><property name = "email" value = ""/>
35. </bean>public void setAddressList(List addressList) {
36. <bean id = "..." class = "exampleBean">
37. <bean id = "..." class = "exampleBean">
38.    <property name = "email"><null/></property>
39. </bean><property name = "email" value = ""/>
40. </bean><bean id = "..." class = "exampleBean">
41. <bean id = "..." class = "exampleBean">
42.    <property name = "email"><null/></property>
43. </bean><property name = "email" value = ""/>
44. </bean>this.addressList = addressList;
45. <bean id = "..." class = "exampleBean">
46. <bean id = "..." class = "exampleBean">
47.    <property name = "email"><null/></property>
48. </bean><property name = "email" value = ""/>
49. </bean>}
50. <bean id = "..." class = "exampleBean">
51. <bean id = "..." class = "exampleBean">
52.    <property name = "email"><null/></property>
53. </bean><property name = "email" value = ""/>
54. </bean>
55. <bean id = "..." class = "exampleBean">
56. <bean id = "..." class = "exampleBean">
57.    <property name = "email"><null/></property>
58. </bean><property name = "email" value = ""/>
59. </bean>// 打印并返回列表的所有元素。
60. <bean id = "..." class = "exampleBean">
61. <bean id = "..." class = "exampleBean">
62.    <property name = "email"><null/></property>
63. </bean><property name = "email" value = ""/>
64. </bean>public List getAddressList() {
65. <bean id = "..." class = "exampleBean">
66. <bean id = "..." class = "exampleBean">
67.    <property name = "email"><null/></property>
68. </bean><property name = "email" value = ""/>
69. </bean><bean id = "..." class = "exampleBean">
70. <bean id = "..." class = "exampleBean">
71.    <property name = "email"><null/></property>
72. </bean><property name = "email" value = ""/>
73. </bean>System.out.println("List Elements :"  + addressList);
74. <bean id = "..." class = "exampleBean">
75. <bean id = "..." class = "exampleBean">
76.    <property name = "email"><null/></property>
77. </bean><property name = "email" value = ""/>
78. </bean><bean id = "..." class = "exampleBean">
79. <bean id = "..." class = "exampleBean">
80.    <property name = "email"><null/></property>
81. </bean><property name = "email" value = ""/>
82. </bean>return addressList;
83. <bean id = "..." class = "exampleBean">
84. <bean id = "..." class = "exampleBean">
85.    <property name = "email"><null/></property>
86. </bean><property name = "email" value = ""/>
87. </bean>}
88. <bean id = "..." class = "exampleBean">
89. <bean id = "..." class = "exampleBean">
90.    <property name = "email"><null/></property>
91. </bean><property name = "email" value = ""/>
92. </bean>
93. <bean id = "..." class = "exampleBean">
94. <bean id = "..." class = "exampleBean">
95.    <property name = "email"><null/></property>
96. </bean><property name = "email" value = ""/>
97. </bean>// 用于设置Set的setter方法
98. <bean id = "..." class = "exampleBean">
99. <bean id = "..." class = "exampleBean">
100.    <property name = "email"><null/></property>
101. </bean><property name = "email" value = ""/>
102. </bean>public void setAddressSet(Set addressSet) {
103. <bean id = "..." class = "exampleBean">
104. <bean id = "..." class = "exampleBean">
105.    <property name = "email"><null/></property>
106. </bean><property name = "email" value = ""/>
107. </bean><bean id = "..." class = "exampleBean">
108. <bean id = "..." class = "exampleBean">
109.    <property name = "email"><null/></property>
110. </bean><property name = "email" value = ""/>
111. </bean>this.addressSet = addressSet;
112. <bean id = "..." class = "exampleBean">
113. <bean id = "..." class = "exampleBean">
114.    <property name = "email"><null/></property>
115. </bean><property name = "email" value = ""/>
116. </bean>}
117. <bean id = "..." class = "exampleBean">
118. <bean id = "..." class = "exampleBean">
119.    <property name = "email"><null/></property>
120. </bean><property name = "email" value = ""/>
121. </bean>
122. <bean id = "..." class = "exampleBean">
123. <bean id = "..." class = "exampleBean">
124.    <property name = "email"><null/></property>
125. </bean><property name = "email" value = ""/>
126. </bean>// 打印并返回Set的所有元素。
127. <bean id = "..." class = "exampleBean">
128. <bean id = "..." class = "exampleBean">
129.    <property name = "email"><null/></property>
130. </bean><property name = "email" value = ""/>
131. </bean>public Set getAddressSet() {
132. <bean id = "..." class = "exampleBean">
133. <bean id = "..." class = "exampleBean">
134.    <property name = "email"><null/></property>
135. </bean><property name = "email" value = ""/>
136. </bean><bean id = "..." class = "exampleBean">
137. <bean id = "..." class = "exampleBean">
138.    <property name = "email"><null/></property>
139. </bean><property name = "email" value = ""/>
140. </bean>System.out.println("Set Elements :"  + addressSet);
141. <bean id = "..." class = "exampleBean">
142. <bean id = "..." class = "exampleBean">
143.    <property name = "email"><null/></property>
144. </bean><property name = "email" value = ""/>
145. </bean><bean id = "..." class = "exampleBean">
146. <bean id = "..." class = "exampleBean">
147.    <property name = "email"><null/></property>
148. </bean><property name = "email" value = ""/>
149. </bean>return addressSet;
150. <bean id = "..." class = "exampleBean">
151. <bean id = "..." class = "exampleBean">
152.    <property name = "email"><null/></property>
153. </bean><property name = "email" value = ""/>
154. </bean>}
155. <bean id = "..." class = "exampleBean">
156. <bean id = "..." class = "exampleBean">
157.    <property name = "email"><null/></property>
158. </bean><property name = "email" value = ""/>
159. </bean>
160. <bean id = "..." class = "exampleBean">
161. <bean id = "..." class = "exampleBean">
162.    <property name = "email"><null/></property>
163. </bean><property name = "email" value = ""/>
164. </bean>// 用于设置Map的setter方法
165. <bean id = "..." class = "exampleBean">
166. <bean id = "..." class = "exampleBean">
167.    <property name = "email"><null/></property>
168. </bean><property name = "email" value = ""/>
169. </bean>public void setAddressMap(Map addressMap) {
170. <bean id = "..." class = "exampleBean">
171. <bean id = "..." class = "exampleBean">
172.    <property name = "email"><null/></property>
173. </bean><property name = "email" value = ""/>
174. </bean><bean id = "..." class = "exampleBean">
175. <bean id = "..." class = "exampleBean">
176.    <property name = "email"><null/></property>
177. </bean><property name = "email" value = ""/>
178. </bean>this.addressMap = addressMap;
179. <bean id = "..." class = "exampleBean">
180. <bean id = "..." class = "exampleBean">
181.    <property name = "email"><null/></property>
182. </bean><property name = "email" value = ""/>
183. </bean>}
184. <bean id = "..." class = "exampleBean">
185. <bean id = "..." class = "exampleBean">
186.    <property name = "email"><null/></property>
187. </bean><property name = "email" value = ""/>
188. </bean>
189. <bean id = "..." class = "exampleBean">
190. <bean id = "..." class = "exampleBean">
191.    <property name = "email"><null/></property>
192. </bean><property name = "email" value = ""/>
193. </bean>// 打印并返回Map的所有元素。
194. <bean id = "..." class = "exampleBean">
195. <bean id = "..." class = "exampleBean">
196.    <property name = "email"><null/></property>
197. </bean><property name = "email" value = ""/>
198. </bean>public Map getAddressMap() {
199. <bean id = "..." class = "exampleBean">
200. <bean id = "..." class = "exampleBean">
201.    <property name = "email"><null/></property>
202. </bean><property name = "email" value = ""/>
203. </bean><bean id = "..." class = "exampleBean">
204. <bean id = "..." class = "exampleBean">
205.    <property name = "email"><null/></property>
206. </bean><property name = "email" value = ""/>
207. </bean>System.out.println("Map Elements :"  + addressMap);
208. <bean id = "..." class = "exampleBean">
209. <bean id = "..." class = "exampleBean">
210.    <property name = "email"><null/></property>
211. </bean><property name = "email" value = ""/>
212. </bean><bean id = "..." class = "exampleBean">
213. <bean id = "..." class = "exampleBean">
214.    <property name = "email"><null/></property>
215. </bean><property name = "email" value = ""/>
216. </bean>return addressMap;
217. <bean id = "..." class = "exampleBean">
218. <bean id = "..." class = "exampleBean">
219.    <property name = "email"><null/></property>
220. </bean><property name = "email" value = ""/>
221. </bean>}
222. <bean id = "..." class = "exampleBean">
223. <bean id = "..." class = "exampleBean">
224.    <property name = "email"><null/></property>
225. </bean><property name = "email" value = ""/>
226. </bean>
227. <bean id = "..." class = "exampleBean">
228. <bean id = "..." class = "exampleBean">
229.    <property name = "email"><null/></property>
230. </bean><property name = "email" value = ""/>
231. </bean>// 用于设置Property的setter方法
232. <bean id = "..." class = "exampleBean">
233. <bean id = "..." class = "exampleBean">
234.    <property name = "email"><null/></property>
235. </bean><property name = "email" value = ""/>
236. </bean>public void setAddressProp(Properties addressProp) {
237. <bean id = "..." class = "exampleBean">
238. <bean id = "..." class = "exampleBean">
239.    <property name = "email"><null/></property>
240. </bean><property name = "email" value = ""/>
241. </bean><bean id = "..." class = "exampleBean">
242. <bean id = "..." class = "exampleBean">
243.    <property name = "email"><null/></property>
244. </bean><property name = "email" value = ""/>
245. </bean>this.addressProp = addressProp;
246. <bean id = "..." class = "exampleBean">
247. <bean id = "..." class = "exampleBean">
248.    <property name = "email"><null/></property>
249. </bean><property name = "email" value = ""/>
250. </bean>}
251. <bean id = "..." class = "exampleBean">
252. <bean id = "..." class = "exampleBean">
253.    <property name = "email"><null/></property>
254. </bean><property name = "email" value = ""/>
255. </bean>
256. <bean id = "..." class = "exampleBean">
257. <bean id = "..." class = "exampleBean">
258.    <property name = "email"><null/></property>
259. </bean><property name = "email" value = ""/>
260. </bean>// 打印并返回Property的所有元素。
261. <bean id = "..." class = "exampleBean">
262. <bean id = "..." class = "exampleBean">
263.    <property name = "email"><null/></property>
264. </bean><property name = "email" value = ""/>
265. </bean>public Properties getAddressProp() {
266. <bean id = "..." class = "exampleBean">
267. <bean id = "..." class = "exampleBean">
268.    <property name = "email"><null/></property>
269. </bean><property name = "email" value = ""/>
270. </bean><bean id = "..." class = "exampleBean">
271. <bean id = "..." class = "exampleBean">
272.    <property name = "email"><null/></property>
273. </bean><property name = "email" value = ""/>
274. </bean>System.out.println("Property Elements :"  + addressProp);
275. <bean id = "..." class = "exampleBean">
276. <bean id = "..." class = "exampleBean">
277.    <property name = "email"><null/></property>
278. </bean><property name = "email" value = ""/>
279. </bean><bean id = "..." class = "exampleBean">
280. <bean id = "..." class = "exampleBean">
281.    <property name = "email"><null/></property>
282. </bean><property name = "email" value = ""/>
283. </bean>return addressProp;
284. <bean id = "..." class = "exampleBean">
285. <bean id = "..." class = "exampleBean">
286.    <property name = "email"><null/></property>
287. </bean><property name = "email" value = ""/>
288. </bean>}
289. }

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以下是MainApp.java文件的内容：

1. package com.tutorialspoint;
3. import org.springframework.context.ApplicationContext;
4. import org.springframework.context.support.ClassPathXmlApplicationContext;
6. public class MainApp {
7. <bean id = "..." class = "exampleBean">
8. <bean id = "..." class = "exampleBean">
9.    <property name = "email"><null/></property>
10. </bean><property name = "email" value = ""/>
11. </bean>public static void main(String[] args) {
12. <bean id = "..." class = "exampleBean">
13. <bean id = "..." class = "exampleBean">
14.    <property name = "email"><null/></property>
15. </bean><property name = "email" value = ""/>
16. </bean><bean id = "..." class = "exampleBean">
17. <bean id = "..." class = "exampleBean">
18.    <property name = "email"><null/></property>
19. </bean><property name = "email" value = ""/>
20. </bean>ApplicationContext context = new ClassPathXmlApplicationContext("Beans.xml");
21. <bean id = "..." class = "exampleBean">
22. <bean id = "..." class = "exampleBean">
23.    <property name = "email"><null/></property>
24. </bean><property name = "email" value = ""/>
25. </bean><bean id = "..." class = "exampleBean">
26. <bean id = "..." class = "exampleBean">
27.    <property name = "email"><null/></property>
28. </bean><property name = "email" value = ""/>
29. </bean>JavaCollection jc=(JavaCollection)context.getBean("javaCollection");
31. <bean id = "..." class = "exampleBean">
32. <bean id = "..." class = "exampleBean">
33.    <property name = "email"><null/></property>
34. </bean><property name = "email" value = ""/>
35. </bean><bean id = "..." class = "exampleBean">
36. <bean id = "..." class = "exampleBean">
37.    <property name = "email"><null/></property>
38. </bean><property name = "email" value = ""/>
39. </bean>jc.getAddressList();
40. <bean id = "..." class = "exampleBean">
41. <bean id = "..." class = "exampleBean">
42.    <property name = "email"><null/></property>
43. </bean><property name = "email" value = ""/>
44. </bean><bean id = "..." class = "exampleBean">
45. <bean id = "..." class = "exampleBean">
46.    <property name = "email"><null/></property>
47. </bean><property name = "email" value = ""/>
48. </bean>jc.getAddressSet();
49. <bean id = "..." class = "exampleBean">
50. <bean id = "..." class = "exampleBean">
51.    <property name = "email"><null/></property>
52. </bean><property name = "email" value = ""/>
53. </bean><bean id = "..." class = "exampleBean">
54. <bean id = "..." class = "exampleBean">
55.    <property name = "email"><null/></property>
56. </bean><property name = "email" value = ""/>
57. </bean>jc.getAddressMap();
58. <bean id = "..." class = "exampleBean">
59. <bean id = "..." class = "exampleBean">
60.    <property name = "email"><null/></property>
61. </bean><property name = "email" value = ""/>
62. </bean><bean id = "..." class = "exampleBean">
63. <bean id = "..." class = "exampleBean">
64.    <property name = "email"><null/></property>
65. </bean><property name = "email" value = ""/>
66. </bean>jc.getAddressProp();
67. <bean id = "..." class = "exampleBean">
68. <bean id = "..." class = "exampleBean">
69.    <property name = "email"><null/></property>
70. </bean><property name = "email" value = ""/>
71. </bean>}
72. }

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以下是包含所有集合类型配置的Beans.xml配置文件的内容：

1. <?xml version = "1.0" encoding = "UTF-8"?>
3. <beans xmlns = "http://www.springframework.org/schema/beans"
4. <bean id = "..." class = "exampleBean">
5. <bean id = "..." class = "exampleBean">
6.    <property name = "email"><null/></property>
7. </bean><property name = "email" value = ""/>
8. </bean>xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance"
9. <bean id = "..." class = "exampleBean">
10. <bean id = "..." class = "exampleBean">
11.    <property name = "email"><null/></property>
12. </bean><property name = "email" value = ""/>
13. </bean>xsi:schemaLocation = "http://www.springframework.org/schema/beans
14. <bean id = "..." class = "exampleBean">
15. <bean id = "..." class = "exampleBean">
16.    <property name = "email"><null/></property>
17. </bean><property name = "email" value = ""/>
18. </bean>http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
20. ">
22. <bean id = "..." class = "exampleBean">
23. <bean id = "..." class = "exampleBean">
24.    <property name = "email"><null/></property>
25. </bean><property name = "email" value = ""/>
26. </bean>
27. <bean id = "..." class = "exampleBean">
28. <bean id = "..." class = "exampleBean">
29.    <property name = "email"><null/></property>
30. </bean><property name = "email" value = ""/>
31. </bean><bean id = "javaCollection" class = "com.tutorialspoint.JavaCollection">
32. <bean id = "..." class = "exampleBean">
33. <bean id = "..." class = "exampleBean">
34.    <property name = "email"><null/></property>
35. </bean><property name = "email" value = ""/>
36. </bean><bean id = "..." class = "exampleBean">
37. <bean id = "..." class = "exampleBean">
38.    <property name = "email"><null/></property>
39. </bean><property name = "email" value = ""/>
40. </bean>
41. <bean id = "..." class = "exampleBean">
42. <bean id = "..." class = "exampleBean">
43.    <property name = "email"><null/></property>
44. </bean><property name = "email" value = ""/>
45. </bean><bean id = "..." class = "exampleBean">
46. <bean id = "..." class = "exampleBean">
47.    <property name = "email"><null/></property>
48. </bean><property name = "email" value = ""/>
49. </bean>
50. <bean id = "..." class = "exampleBean">
51. <bean id = "..." class = "exampleBean">
52.    <property name = "email"><null/></property>
53. </bean><property name = "email" value = ""/>
54. </bean><bean id = "..." class = "exampleBean">
55. <bean id = "..." class = "exampleBean">
56.    <property name = "email"><null/></property>
57. </bean><property name = "email" value = ""/>
58. </bean><property name = "addressList">
59. <bean id = "..." class = "exampleBean">
60. <bean id = "..." class = "exampleBean">
61.    <property name = "email"><null/></property>
62. </bean><property name = "email" value = ""/>
63. </bean><bean id = "..." class = "exampleBean">
64. <bean id = "..." class = "exampleBean">
65.    <property name = "email"><null/></property>
66. </bean><property name = "email" value = ""/>
67. </bean><bean id = "..." class = "exampleBean">
68. <bean id = "..." class = "exampleBean">
69.    <property name = "email"><null/></property>
70. </bean><property name = "email" value = ""/>
71. </bean><list>
72. <bean id = "..." class = "exampleBean">
73. <bean id = "..." class = "exampleBean">
74.    <property name = "email"><null/></property>
75. </bean><property name = "email" value = ""/>
76. </bean><bean id = "..." class = "exampleBean">
77. <bean id = "..." class = "exampleBean">
78.    <property name = "email"><null/></property>
79. </bean><property name = "email" value = ""/>
80. </bean><bean id = "..." class = "exampleBean">
81. <bean id = "..." class = "exampleBean">
82.    <property name = "email"><null/></property>
83. </bean><property name = "email" value = ""/>
84. </bean><bean id = "..." class = "exampleBean">
85. <bean id = "..." class = "exampleBean">
86.    <property name = "email"><null/></property>
87. </bean><property name = "email" value = ""/>
88. </bean><value>INDIA</value>
89. <bean id = "..." class = "exampleBean">
90. <bean id = "..." class = "exampleBean">
91.    <property name = "email"><null/></property>
92. </bean><property name = "email" value = ""/>
93. </bean><bean id = "..." class = "exampleBean">
94. <bean id = "..." class = "exampleBean">
95.    <property name = "email"><null/></property>
96. </bean><property name = "email" value = ""/>
97. </bean><bean id = "..." class = "exampleBean">
98. <bean id = "..." class = "exampleBean">
99.    <property name = "email"><null/></property>
100. </bean><property name = "email" value = ""/>
101. </bean><bean id = "..." class = "exampleBean">
102. <bean id = "..." class = "exampleBean">
103.    <property name = "email"><null/></property>
104. </bean><property name = "email" value = ""/>
105. </bean><value>Pakistan</value>
106. <bean id = "..." class = "exampleBean">
107. <bean id = "..." class = "exampleBean">
108.    <property name = "email"><null/></property>
109. </bean><property name = "email" value = ""/>
110. </bean><bean id = "..." class = "exampleBean">
111. <bean id = "..." class = "exampleBean">
112.    <property name = "email"><null/></property>
113. </bean><property name = "email" value = ""/>
114. </bean><bean id = "..." class = "exampleBean">
115. <bean id = "..." class = "exampleBean">
116.    <property name = "email"><null/></property>
117. </bean><property name = "email" value = ""/>
118. </bean><bean id = "..." class = "exampleBean">
119. <bean id = "..." class = "exampleBean">
120.    <property name = "email"><null/></property>
121. </bean><property name = "email" value = ""/>
122. </bean><value>USA</value>
123. <bean id = "..." class = "exampleBean">
124. <bean id = "..." class = "exampleBean">
125.    <property name = "email"><null/></property>
126. </bean><property name = "email" value = ""/>
127. </bean><bean id = "..." class = "exampleBean">
128. <bean id = "..." class = "exampleBean">
129.    <property name = "email"><null/></property>
130. </bean><property name = "email" value = ""/>
131. </bean><bean id = "..." class = "exampleBean">
132. <bean id = "..." class = "exampleBean">
133.    <property name = "email"><null/></property>
134. </bean><property name = "email" value = ""/>
135. </bean><bean id = "..." class = "exampleBean">
136. <bean id = "..." class = "exampleBean">
137.    <property name = "email"><null/></property>
138. </bean><property name = "email" value = ""/>
139. </bean><value>USA</value>
140. <bean id = "..." class = "exampleBean">
141. <bean id = "..." class = "exampleBean">
142.    <property name = "email"><null/></property>
143. </bean><property name = "email" value = ""/>
144. </bean><bean id = "..." class = "exampleBean">
145. <bean id = "..." class = "exampleBean">
146.    <property name = "email"><null/></property>
147. </bean><property name = "email" value = ""/>
148. </bean><bean id = "..." class = "exampleBean">
149. <bean id = "..." class = "exampleBean">
150.    <property name = "email"><null/></property>
151. </bean><property name = "email" value = ""/>
152. </bean></list>
153. <bean id = "..." class = "exampleBean">
154. <bean id = "..." class = "exampleBean">
155.    <property name = "email"><null/></property>
156. </bean><property name = "email" value = ""/>
157. </bean><bean id = "..." class = "exampleBean">
158. <bean id = "..." class = "exampleBean">
159.    <property name = "email"><null/></property>
160. </bean><property name = "email" value = ""/>
161. </bean></property>
163. <bean id = "..." class = "exampleBean">
164. <bean id = "..." class = "exampleBean">
165.    <property name = "email"><null/></property>
166. </bean><property name = "email" value = ""/>
167. </bean><bean id = "..." class = "exampleBean">
168. <bean id = "..." class = "exampleBean">
169.    <property name = "email"><null/></property>
170. </bean><property name = "email" value = ""/>
171. </bean>
172. <bean id = "..." class = "exampleBean">
173. <bean id = "..." class = "exampleBean">
174.    <property name = "email"><null/></property>
175. </bean><property name = "email" value = ""/>
176. </bean><bean id = "..." class = "exampleBean">
177. <bean id = "..." class = "exampleBean">
178.    <property name = "email"><null/></property>
179. </bean><property name = "email" value = ""/>
180. </bean><property name = "addressSet">
181. <bean id = "..." class = "exampleBean">
182. <bean id = "..." class = "exampleBean">
183.    <property name = "email"><null/></property>
184. </bean><property name = "email" value = ""/>
185. </bean><bean id = "..." class = "exampleBean">
186. <bean id = "..." class = "exampleBean">
187.    <property name = "email"><null/></property>
188. </bean><property name = "email" value = ""/>
189. </bean><bean id = "..." class = "exampleBean">
190. <bean id = "..." class = "exampleBean">
191.    <property name = "email"><null/></property>
192. </bean><property name = "email" value = ""/>
193. </bean><set>
194. <bean id = "..." class = "exampleBean">
195. <bean id = "..." class = "exampleBean">
196.    <property name = "email"><null/></property>
197. </bean><property name = "email" value = ""/>
198. </bean><bean id = "..." class = "exampleBean">
199. <bean id = "..." class = "exampleBean">
200.    <property name = "email"><null/></property>
201. </bean><property name = "email" value = ""/>
202. </bean><bean id = "..." class = "exampleBean">
203. <bean id = "..." class = "exampleBean">
204.    <property name = "email"><null/></property>
205. </bean><property name = "email" value = ""/>
206. </bean><bean id = "..." class = "exampleBean">
207. <bean id = "..." class = "exampleBean">
208.    <property name = "email"><null/></property>
209. </bean><property name = "email" value = ""/>
210. </bean><value>INDIA</value>
211. <bean id = "..." class = "exampleBean">
212. <bean id = "..." class = "exampleBean">
213.    <property name = "email"><null/></property>
214. </bean><property name = "email" value = ""/>
215. </bean><bean id = "..." class = "exampleBean">
216. <bean id = "..." class = "exampleBean">
217.    <property name = "email"><null/></property>
218. </bean><property name = "email" value = ""/>
219. </bean><bean id = "..." class = "exampleBean">
220. <bean id = "..." class = "exampleBean">
221.    <property name = "email"><null/></property>
222. </bean><property name = "email" value = ""/>
223. </bean><bean id = "..." class = "exampleBean">
224. <bean id = "..." class = "exampleBean">
225.    <property name = "email"><null/></property>
226. </bean><property name = "email" value = ""/>
227. </bean><value>Pakistan</value>
228. <bean id = "..." class = "exampleBean">
229. <bean id = "..." class = "exampleBean">
230.    <property name = "email"><null/></property>
231. </bean><property name = "email" value = ""/>
232. </bean><bean id = "..." class = "exampleBean">
233. <bean id = "..." class = "exampleBean">
234.    <property name = "email"><null/></property>
235. </bean><property name = "email" value = ""/>
236. </bean><bean id = "..." class = "exampleBean">
237. <bean id = "..." class = "exampleBean">
238.    <property name = "email"><null/></property>
239. </bean><property name = "email" value = ""/>
240. </bean><bean id = "..." class = "exampleBean">
241. <bean id = "..." class = "exampleBean">
242.    <property name = "email"><null/></property>
243. </bean><property name = "email" value = ""/>
244. </bean><value>USA</value>
245. <bean id = "..." class = "exampleBean">
246. <bean id = "..." class = "exampleBean">
247.    <property name = "email"><null/></property>
248. </bean><property name = "email" value = ""/>
249. </bean><bean id = "..." class = "exampleBean">
250. <bean id = "..." class = "exampleBean">
251.    <property name = "email"><null/></property>
252. </bean><property name = "email" value = ""/>
253. </bean><bean id = "..." class = "exampleBean">
254. <bean id = "..." class = "exampleBean">
255.    <property name = "email"><null/></property>
256. </bean><property name = "email" value = ""/>
257. </bean><bean id = "..." class = "exampleBean">
258. <bean id = "..." class = "exampleBean">
259.    <property name = "email"><null/></property>
260. </bean><property name = "email" value = ""/>
261. </bean><value>USA</value>
262. <bean id = "..." class = "exampleBean">
263. <bean id = "..." class = "exampleBean">
264.    <property name = "email"><null/></property>
265. </bean><property name = "email" value = ""/>
266. </bean><bean id = "..." class = "exampleBean">
267. <bean id = "..." class = "exampleBean">
268.    <property name = "email"><null/></property>
269. </bean><property name = "email" value = ""/>
270. </bean><bean id = "..." class = "exampleBean">
271. <bean id = "..." class = "exampleBean">
272.    <property name = "email"><null/></property>
273. </bean><property name = "email" value = ""/>
274. </bean></set>
275. <bean id = "..." class = "exampleBean">
276. <bean id = "..." class = "exampleBean">
277.    <property name = "email"><null/></property>
278. </bean><property name = "email" value = ""/>
279. </bean><bean id = "..." class = "exampleBean">
280. <bean id = "..." class = "exampleBean">
281.    <property name = "email"><null/></property>
282. </bean><property name = "email" value = ""/>
283. </bean></property>
285. <bean id = "..." class = "exampleBean">
286. <bean id = "..." class = "exampleBean">
287.    <property name = "email"><null/></property>
288. </bean><property name = "email" value = ""/>
289. </bean><bean id = "..." class = "exampleBean">
290. <bean id = "..." class = "exampleBean">
291.    <property name = "email"><null/></property>
292. </bean><property name = "email" value = ""/>
293. </bean>
294. <bean id = "..." class = "exampleBean">
295. <bean id = "..." class = "exampleBean">
296.    <property name = "email"><null/></property>
297. </bean><property name = "email" value = ""/>
298. </bean><bean id = "..." class = "exampleBean">
299. <bean id = "..." class = "exampleBean">
300.    <property name = "email"><null/></property>
301. </bean><property name = "email" value = ""/>
302. </bean><property name = "addressMap">
303. <bean id = "..." class = "exampleBean">
304. <bean id = "..." class = "exampleBean">
305.    <property name = "email"><null/></property>
306. </bean><property name = "email" value = ""/>
307. </bean><bean id = "..." class = "exampleBean">
308. <bean id = "..." class = "exampleBean">
309.    <property name = "email"><null/></property>
310. </bean><property name = "email" value = ""/>
311. </bean><bean id = "..." class = "exampleBean">
312. <bean id = "..." class = "exampleBean">
313.    <property name = "email"><null/></property>
314. </bean><property name = "email" value = ""/>
315. </bean><map>
316. <bean id = "..." class = "exampleBean">
317. <bean id = "..." class = "exampleBean">
318.    <property name = "email"><null/></property>
319. </bean><property name = "email" value = ""/>
320. </bean><bean id = "..." class = "exampleBean">
321. <bean id = "..." class = "exampleBean">
322.    <property name = "email"><null/></property>
323. </bean><property name = "email" value = ""/>
324. </bean><bean id = "..." class = "exampleBean">
325. <bean id = "..." class = "exampleBean">
326.    <property name = "email"><null/></property>
327. </bean><property name = "email" value = ""/>
328. </bean><bean id = "..." class = "exampleBean">
329. <bean id = "..." class = "exampleBean">
330.    <property name = "email"><null/></property>
331. </bean><property name = "email" value = ""/>
332. </bean><entry key = "1" value = "INDIA"/>
333. <bean id = "..." class = "exampleBean">
334. <bean id = "..." class = "exampleBean">
335.    <property name = "email"><null/></property>
336. </bean><property name = "email" value = ""/>
337. </bean><bean id = "..." class = "exampleBean">
338. <bean id = "..." class = "exampleBean">
339.    <property name = "email"><null/></property>
340. </bean><property name = "email" value = ""/>
341. </bean><bean id = "..." class = "exampleBean">
342. <bean id = "..." class = "exampleBean">
343.    <property name = "email"><null/></property>
344. </bean><property name = "email" value = ""/>
345. </bean><bean id = "..." class = "exampleBean">
346. <bean id = "..." class = "exampleBean">
347.    <property name = "email"><null/></property>
348. </bean><property name = "email" value = ""/>
349. </bean><entry key = "2" value = "Pakistan"/>
350. <bean id = "..." class = "exampleBean">
351. <bean id = "..." class = "exampleBean">
352.    <property name = "email"><null/></property>
353. </bean><property name = "email" value = ""/>
354. </bean><bean id = "..." class = "exampleBean">
355. <bean id = "..." class = "exampleBean">
356.    <property name = "email"><null/></property>
357. </bean><property name = "email" value = ""/>
358. </bean><bean id = "..." class = "exampleBean">
359. <bean id = "..." class = "exampleBean">
360.    <property name = "email"><null/></property>
361. </bean><property name = "email" value = ""/>
362. </bean><bean id = "..." class = "exampleBean">
363. <bean id = "..." class = "exampleBean">
364.    <property name = "email"><null/></property>
365. </bean><property name = "email" value = ""/>
366. </bean><entry key = "3" value = "USA"/>
367. <bean id = "..." class = "exampleBean">
368. <bean id = "..." class = "exampleBean">
369.    <property name = "email"><null/></property>
370. </bean><property name = "email" value = ""/>
371. </bean><bean id = "..." class = "exampleBean">
372. <bean id = "..." class = "exampleBean">
373.    <property name = "email"><null/></property>
374. </bean><property name = "email" value = ""/>
375. </bean><bean id = "..." class = "exampleBean">
376. <bean id = "..." class = "exampleBean">
377.    <property name = "email"><null/></property>
378. </bean><property name = "email" value = ""/>
379. </bean><bean id = "..." class = "exampleBean">
380. <bean id = "..." class = "exampleBean">
381.    <property name = "email"><null/></property>
382. </bean><property name = "email" value = ""/>
383. </bean><entry key = "4" value = "USA"/>
384. <bean id = "..." class = "exampleBean">
385. <bean id = "..." class = "exampleBean">
386.    <property name = "email"><null/></property>
387. </bean><property name = "email" value = ""/>
388. </bean><bean id = "..." class = "exampleBean">
389. <bean id = "..." class = "exampleBean">
390.    <property name = "email"><null/></property>
391. </bean><property name = "email" value = ""/>
392. </bean><bean id = "..." class = "exampleBean">
393. <bean id = "..." class = "exampleBean">
394.    <property name = "email"><null/></property>
395. </bean><property name = "email" value = ""/>
396. </bean></map>
397. <bean id = "..." class = "exampleBean">
398. <bean id = "..." class = "exampleBean">
399.    <property name = "email"><null/></property>
400. </bean><property name = "email" value = ""/>
401. </bean><bean id = "..." class = "exampleBean">
402. <bean id = "..." class = "exampleBean">
403.    <property name = "email"><null/></property>
404. </bean><property name = "email" value = ""/>
405. </bean></property>
406. <bean id = "..." class = "exampleBean">
407. <bean id = "..." class = "exampleBean">
408.    <property name = "email"><null/></property>
409. </bean><property name = "email" value = ""/>
410. </bean><bean id = "..." class = "exampleBean">
411. <bean id = "..." class = "exampleBean">
412.    <property name = "email"><null/></property>
413. </bean><property name = "email" value = ""/>
414. </bean>
415. <bean id = "..." class = "exampleBean">
416. <bean id = "..." class = "exampleBean">
417.    <property name = "email"><null/></property>
418. </bean><property name = "email" value = ""/>
419. </bean><bean id = "..." class = "exampleBean">
420. <bean id = "..." class = "exampleBean">
421.    <property name = "email"><null/></property>
422. </bean><property name = "email" value = ""/>
423. </bean>
424. <bean id = "..." class = "exampleBean">
425. <bean id = "..." class = "exampleBean">
426.    <property name = "email"><null/></property>
427. </bean><property name = "email" value = ""/>
428. </bean><bean id = "..." class = "exampleBean">
429. <bean id = "..." class = "exampleBean">
430.    <property name = "email"><null/></property>
431. </bean><property name = "email" value = ""/>
432. </bean><property name = "addressProp">
433. <bean id = "..." class = "exampleBean">
434. <bean id = "..." class = "exampleBean">
435.    <property name = "email"><null/></property>
436. </bean><property name = "email" value = ""/>
437. </bean><bean id = "..." class = "exampleBean">
438. <bean id = "..." class = "exampleBean">
439.    <property name = "email"><null/></property>
440. </bean><property name = "email" value = ""/>
441. </bean><bean id = "..." class = "exampleBean">
442. <bean id = "..." class = "exampleBean">
443.    <property name = "email"><null/></property>
444. </bean><property name = "email" value = ""/>
445. </bean><props>
446. <bean id = "..." class = "exampleBean">
447. <bean id = "..." class = "exampleBean">
448.    <property name = "email"><null/></property>
449. </bean><property name = "email" value = ""/>
450. </bean><bean id = "..." class = "exampleBean">
451. <bean id = "..." class = "exampleBean">
452.    <property name = "email"><null/></property>
453. </bean><property name = "email" value = ""/>
454. </bean><bean id = "..." class = "exampleBean">
455. <bean id = "..." class = "exampleBean">
456.    <property name = "email"><null/></property>
457. </bean><property name = "email" value = ""/>
458. </bean><bean id = "..." class = "exampleBean">
459. <bean id = "..." class = "exampleBean">
460.    <property name = "email"><null/></property>
461. </bean><property name = "email" value = ""/>
462. </bean><prop key = "one">INDIA</prop>
463. <bean id = "..." class = "exampleBean">
464. <bean id = "..." class = "exampleBean">
465.    <property name = "email"><null/></property>
466. </bean><property name = "email" value = ""/>
467. </bean><bean id = "..." class = "exampleBean">
468. <bean id = "..." class = "exampleBean">
469.    <property name = "email"><null/></property>
470. </bean><property name = "email" value = ""/>
471. </bean><bean id = "..." class = "exampleBean">
472. <bean id = "..." class = "exampleBean">
473.    <property name = "email"><null/></property>
474. </bean><property name = "email" value = ""/>
475. </bean><bean id = "..." class = "exampleBean">
476. <bean id = "..." class = "exampleBean">
477.    <property name = "email"><null/></property>
478. </bean><property name = "email" value = ""/>
479. </bean><prop key = "one">INDIA</prop>
480. <bean id = "..." class = "exampleBean">
481. <bean id = "..." class = "exampleBean">
482.    <property name = "email"><null/></property>
483. </bean><property name = "email" value = ""/>
484. </bean><bean id = "..." class = "exampleBean">
485. <bean id = "..." class = "exampleBean">
486.    <property name = "email"><null/></property>
487. </bean><property name = "email" value = ""/>
488. </bean><bean id = "..." class = "exampleBean">
489. <bean id = "..." class = "exampleBean">
490.    <property name = "email"><null/></property>
491. </bean><property name = "email" value = ""/>
492. </bean><bean id = "..." class = "exampleBean">
493. <bean id = "..." class = "exampleBean">
494.    <property name = "email"><null/></property>
495. </bean><property name = "email" value = ""/>
496. </bean><prop key = "two">Pakistan</prop>
497. <bean id = "..." class = "exampleBean">
498. <bean id = "..." class = "exampleBean">
499.    <property name = "email"><null/></property>
500. </bean><property name = "email" value = ""/>
501. </bean><bean id = "..." class = "exampleBean">
502. <bean id = "..." class = "exampleBean">
503.    <property name = "email"><null/></property>
504. </bean><property name = "email" value = ""/>
505. </bean><bean id = "..." class = "exampleBean">
506. <bean id = "..." class = "exampleBean">
507.    <property name = "email"><null/></property>
508. </bean><property name = "email" value = ""/>
509. </bean><bean id = "..." class = "exampleBean">
510. <bean id = "..." class = "exampleBean">
511.    <property name = "email"><null/></property>
512. </bean><property name = "email" value = ""/>
513. </bean><prop key = "three">USA</prop>
514. <bean id = "..." class = "exampleBean">
515. <bean id = "..." class = "exampleBean">
516.    <property name = "email"><null/></property>
517. </bean><property name = "email" value = ""/>
518. </bean><bean id = "..." class = "exampleBean">
519. <bean id = "..." class = "exampleBean">
520.    <property name = "email"><null/></property>
521. </bean><property name = "email" value = ""/>
522. </bean><bean id = "..." class = "exampleBean">
523. <bean id = "..." class = "exampleBean">
524.    <property name = "email"><null/></property>
525. </bean><property name = "email" value = ""/>
526. </bean><bean id = "..." class = "exampleBean">
527. <bean id = "..." class = "exampleBean">
528.    <property name = "email"><null/></property>
529. </bean><property name = "email" value = ""/>
530. </bean><prop key = "four">USA</prop>
531. <bean id = "..." class = "exampleBean">
532. <bean id = "..." class = "exampleBean">
533.    <property name = "email"><null/></property>
534. </bean><property name = "email" value = ""/>
535. </bean><bean id = "..." class = "exampleBean">
536. <bean id = "..." class = "exampleBean">
537.    <property name = "email"><null/></property>
538. </bean><property name = "email" value = ""/>
539. </bean><bean id = "..." class = "exampleBean">
540. <bean id = "..." class = "exampleBean">
541.    <property name = "email"><null/></property>
542. </bean><property name = "email" value = ""/>
543. </bean></props>
544. <bean id = "..." class = "exampleBean">
545. <bean id = "..." class = "exampleBean">
546.    <property name = "email"><null/></property>
547. </bean><property name = "email" value = ""/>
548. </bean><bean id = "..." class = "exampleBean">
549. <bean id = "..." class = "exampleBean">
550.    <property name = "email"><null/></property>
551. </bean><property name = "email" value = ""/>
552. </bean></property>
553. <bean id = "..." class = "exampleBean">
554. <bean id = "..." class = "exampleBean">
555.    <property name = "email"><null/></property>
556. </bean><property name = "email" value = ""/>
557. </bean></bean>
559. </beans>

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当您完成创建源代码和Bean配置文件后，让我们运行应用程序。如果一切正常，应用程序将打印以下消息：

1. List Elements :[INDIA, Pakistan, USA, USA]
2. Set Elements :[INDIA, Pakistan, USA]
3. Map Elements :{1=INDIA, 2=Pakistan, 3=USA, 4=USA}
4. Property Elements :{two=Pakistan, one=INDIA, three=USA, four=USA}

复制代码

注入Bean引用
以下Bean定义将帮助您了解如何将Bean引用注入为集合的元素之一。您甚至可以将引用和值混合在一起，如下面的代码片段所示：

1. <?xml version = "1.0" encoding = "UTF-8"?>
3. <beans xmlns = "http://www.springframework.org/schema/beans"
4. <bean id = "..." class = "exampleBean">
5. <bean id = "..." class = "exampleBean">
6.    <property name = "email"><null/></property>
7. </bean><property name = "email" value = ""/>
8. </bean>xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance"
9. <bean id = "..." class = "exampleBean">
10. <bean id = "..." class = "exampleBean">
11.    <property name = "email"><null/></property>
12. </bean><property name = "email" value = ""/>
13. </bean>xsi:schemaLocation = "http://www.springframework.org/schema/beans
14. <bean id = "..." class = "exampleBean">
15. <bean id = "..." class = "exampleBean">
16.    <property name = "email"><null/></property>
17. </bean><property name = "email" value = ""/>
18. </bean>http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
20. <bean id = "..." class = "exampleBean">
21. <bean id = "..." class = "exampleBean">
22.    <property name = "email"><null/></property>
23. </bean><property name = "email" value = ""/>
24. </bean>
25. <bean id = "..." class = "exampleBean">
26. <bean id = "..." class = "exampleBean">
27.    <property name = "email"><null/></property>
28. </bean><property name = "email" value = ""/>
29. </bean><bean id = "..." class = "...">
31. <bean id = "..." class = "exampleBean">
32. <bean id = "..." class = "exampleBean">
33.    <property name = "email"><null/></property>
34. </bean><property name = "email" value = ""/>
35. </bean><bean id = "..." class = "exampleBean">
36. <bean id = "..." class = "exampleBean">
37.    <property name = "email"><null/></property>
38. </bean><property name = "email" value = ""/>
39. </bean>
40. <bean id = "..." class = "exampleBean">
41. <bean id = "..." class = "exampleBean">
42.    <property name = "email"><null/></property>
43. </bean><property name = "email" value = ""/>
44. </bean><bean id = "..." class = "exampleBean">
45. <bean id = "..." class = "exampleBean">
46.    <property name = "email"><null/></property>
47. </bean><property name = "email" value = ""/>
48. </bean><property name = "addressList">
49. <bean id = "..." class = "exampleBean">
50. <bean id = "..." class = "exampleBean">
51.    <property name = "email"><null/></property>
52. </bean><property name = "email" value = ""/>
53. </bean><bean id = "..." class = "exampleBean">
54. <bean id = "..." class = "exampleBean">
55.    <property name = "email"><null/></property>
56. </bean><property name = "email" value = ""/>
57. </bean><bean id = "..." class = "exampleBean">
58. <bean id = "..." class = "exampleBean">
59.    <property name = "email"><null/></property>
60. </bean><property name = "email" value = ""/>
61. </bean><list>
62. <bean id = "..." class = "exampleBean">
63. <bean id = "..." class = "exampleBean">
64.    <property name = "email"><null/></property>
65. </bean><property name = "email" value = ""/>
66. </bean><bean id = "..." class = "exampleBean">
67. <bean id = "..." class = "exampleBean">
68.    <property name = "email"><null/></property>
69. </bean><property name = "email" value = ""/>
70. </bean><bean id = "..." class = "exampleBean">
71. <bean id = "..." class = "exampleBean">
72.    <property name = "email"><null/></property>
73. </bean><property name = "email" value = ""/>
74. </bean><bean id = "..." class = "exampleBean">
75. <bean id = "..." class = "exampleBean">
76.    <property name = "email"><null/></property>
77. </bean><property name = "email" value = ""/>
78. </bean><ref bean = "address1"/>
79. <bean id = "..." class = "exampleBean">
80. <bean id = "..." class = "exampleBean">
81.    <property name = "email"><null/></property>
82. </bean><property name = "email" value = ""/>
83. </bean><bean id = "..." class = "exampleBean">
84. <bean id = "..." class = "exampleBean">
85.    <property name = "email"><null/></property>
86. </bean><property name = "email" value = ""/>
87. </bean><bean id = "..." class = "exampleBean">
88. <bean id = "..." class = "exampleBean">
89.    <property name = "email"><null/></property>
90. </bean><property name = "email" value = ""/>
91. </bean><bean id = "..." class = "exampleBean">
92. <bean id = "..." class = "exampleBean">
93.    <property name = "email"><null/></property>
94. </bean><property name = "email" value = ""/>
95. </bean><ref bean = "address2"/>
96. <bean id = "..." class = "exampleBean">
97. <bean id = "..." class = "exampleBean">
98.    <property name = "email"><null/></property>
99. </bean><property name = "email" value = ""/>
100. </bean><bean id = "..." class = "exampleBean">
101. <bean id = "..." class = "exampleBean">
102.    <property name = "email"><null/></property>
103. </bean><property name = "email" value = ""/>
104. </bean><bean id = "..." class = "exampleBean">
105. <bean id = "..." class = "exampleBean">
106.    <property name = "email"><null/></property>
107. </bean><property name = "email" value = ""/>
108. </bean><bean id = "..." class = "exampleBean">
109. <bean id = "..." class = "exampleBean">
110.    <property name = "email"><null/></property>
111. </bean><property name = "email" value = ""/>
112. </bean><value>Pakistan</value>
113. <bean id = "..." class = "exampleBean">
114. <bean id = "..." class = "exampleBean">
115.    <property name = "email"><null/></property>
116. </bean><property name = "email" value = ""/>
117. </bean><bean id = "..." class = "exampleBean">
118. <bean id = "..." class = "exampleBean">
119.    <property name = "email"><null/></property>
120. </bean><property name = "email" value = ""/>
121. </bean><bean id = "..." class = "exampleBean">
122. <bean id = "..." class = "exampleBean">
123.    <property name = "email"><null/></property>
124. </bean><property name = "email" value = ""/>
125. </bean></list>
126. <bean id = "..." class = "exampleBean">
127. <bean id = "..." class = "exampleBean">
128.    <property name = "email"><null/></property>
129. </bean><property name = "email" value = ""/>
130. </bean><bean id = "..." class = "exampleBean">
131. <bean id = "..." class = "exampleBean">
132.    <property name = "email"><null/></property>
133. </bean><property name = "email" value = ""/>
134. </bean></property>
135. <bean id = "..." class = "exampleBean">
136. <bean id = "..." class = "exampleBean">
137.    <property name = "email"><null/></property>
138. </bean><property name = "email" value = ""/>
139. </bean><bean id = "..." class = "exampleBean">
140. <bean id = "..." class = "exampleBean">
141.    <property name = "email"><null/></property>
142. </bean><property name = "email" value = ""/>
143. </bean>
144. <bean id = "..." class = "exampleBean">
145. <bean id = "..." class = "exampleBean">
146.    <property name = "email"><null/></property>
147. </bean><property name = "email" value = ""/>
148. </bean><bean id = "..." class = "exampleBean">
149. <bean id = "..." class = "exampleBean">
150.    <property name = "email"><null/></property>
151. </bean><property name = "email" value = ""/>
152. </bean>
153. <bean id = "..." class = "exampleBean">
154. <bean id = "..." class = "exampleBean">
155.    <property name = "email"><null/></property>
156. </bean><property name = "email" value = ""/>
157. </bean><bean id = "..." class = "exampleBean">
158. <bean id = "..." class = "exampleBean">
159.    <property name = "email"><null/></property>
160. </bean><property name = "email" value = ""/>
161. </bean><property name = "addressSet">
162. <bean id = "..." class = "exampleBean">
163. <bean id = "..." class = "exampleBean">
164.    <property name = "email"><null/></property>
165. </bean><property name = "email" value = ""/>
166. </bean><bean id = "..." class = "exampleBean">
167. <bean id = "..." class = "exampleBean">
168.    <property name = "email"><null/></property>
169. </bean><property name = "email" value = ""/>
170. </bean><bean id = "..." class = "exampleBean">
171. <bean id = "..." class = "exampleBean">
172.    <property name = "email"><null/></property>
173. </bean><property name = "email" value = ""/>
174. </bean><set>
175. <bean id = "..." class = "exampleBean">
176. <bean id = "..." class = "exampleBean">
177.    <property name = "email"><null/></property>
178. </bean><property name = "email" value = ""/>
179. </bean><bean id = "..." class = "exampleBean">
180. <bean id = "..." class = "exampleBean">
181.    <property name = "email"><null/></property>
182. </bean><property name = "email" value = ""/>
183. </bean><bean id = "..." class = "exampleBean">
184. <bean id = "..." class = "exampleBean">
185.    <property name = "email"><null/></property>
186. </bean><property name = "email" value = ""/>
187. </bean><bean id = "..." class = "exampleBean">
188. <bean id = "..." class = "exampleBean">
189.    <property name = "email"><null/></property>
190. </bean><property name = "email" value = ""/>
191. </bean><ref bean = "address1"/>
192. <bean id = "..." class = "exampleBean">
193. <bean id = "..." class = "exampleBean">
194.    <property name = "email"><null/></property>
195. </bean><property name = "email" value = ""/>
196. </bean><bean id = "..." class = "exampleBean">
197. <bean id = "..." class = "exampleBean">
198.    <property name = "email"><null/></property>
199. </bean><property name = "email" value = ""/>
200. </bean><bean id = "..." class = "exampleBean">
201. <bean id = "..." class = "exampleBean">
202.    <property name = "email"><null/></property>
203. </bean><property name = "email" value = ""/>
204. </bean><bean id = "..." class = "exampleBean">
205. <bean id = "..." class = "exampleBean">
206.    <property name = "email"><null/></property>
207. </bean><property name = "email" value = ""/>
208. </bean><ref bean = "address2"/>
209. <bean id = "..." class = "exampleBean">
210. <bean id = "..." class = "exampleBean">
211.    <property name = "email"><null/></property>
212. </bean><property name = "email" value = ""/>
213. </bean><bean id = "..." class = "exampleBean">
214. <bean id = "..." class = "exampleBean">
215.    <property name = "email"><null/></property>
216. </bean><property name = "email" value = ""/>
217. </bean><bean id = "..." class = "exampleBean">
218. <bean id = "..." class = "exampleBean">
219.    <property name = "email"><null/></property>
220. </bean><property name = "email" value = ""/>
221. </bean><bean id = "..." class = "exampleBean">
222. <bean id = "..." class = "exampleBean">
223.    <property name = "email"><null/></property>
224. </bean><property name = "email" value = ""/>
225. </bean><value>Pakistan</value>
226. <bean id = "..." class = "exampleBean">
227. <bean id = "..." class = "exampleBean">
228.    <property name = "email"><null/></property>
229. </bean><property name = "email" value = ""/>
230. </bean><bean id = "..." class = "exampleBean">
231. <bean id = "..." class = "exampleBean">
232.    <property name = "email"><null/></property>
233. </bean><property name = "email" value = ""/>
234. </bean><bean id = "..." class = "exampleBean">
235. <bean id = "..." class = "exampleBean">
236.    <property name = "email"><null/></property>
237. </bean><property name = "email" value = ""/>
238. </bean></set>
239. <bean id = "..." class = "exampleBean">
240. <bean id = "..." class = "exampleBean">
241.    <property name = "email"><null/></property>
242. </bean><property name = "email" value = ""/>
243. </bean><bean id = "..." class = "exampleBean">
244. <bean id = "..." class = "exampleBean">
245.    <property name = "email"><null/></property>
246. </bean><property name = "email" value = ""/>
247. </bean></property>
248. <bean id = "..." class = "exampleBean">
249. <bean id = "..." class = "exampleBean">
250.    <property name = "email"><null/></property>
251. </bean><property name = "email" value = ""/>
252. </bean><bean id = "..." class = "exampleBean">
253. <bean id = "..." class = "exampleBean">
254.    <property name = "email"><null/></property>
255. </bean><property name = "email" value = ""/>
256. </bean>
257. <bean id = "..." class = "exampleBean">
258. <bean id = "..." class = "exampleBean">
259.    <property name = "email"><null/></property>
260. </bean><property name = "email" value = ""/>
261. </bean><bean id = "..." class = "exampleBean">
262. <bean id = "..." class = "exampleBean">
263.    <property name = "email"><null/></property>
264. </bean><property name = "email" value = ""/>
265. </bean>
266. <bean id = "..." class = "exampleBean">
267. <bean id = "..." class = "exampleBean">
268.    <property name = "email"><null/></property>
269. </bean><property name = "email" value = ""/>
270. </bean><bean id = "..." class = "exampleBean">
271. <bean id = "..." class = "exampleBean">
272.    <property name = "email"><null/></property>
273. </bean><property name = "email" value = ""/>
274. </bean><property name = "addressMap">
275. <bean id = "..." class = "exampleBean">
276. <bean id = "..." class = "exampleBean">
277.    <property name = "email"><null/></property>
278. </bean><property name = "email" value = ""/>
279. </bean><bean id = "..." class = "exampleBean">
280. <bean id = "..." class = "exampleBean">
281.    <property name = "email"><null/></property>
282. </bean><property name = "email" value = ""/>
283. </bean><bean id = "..." class = "exampleBean">
284. <bean id = "..." class = "exampleBean">
285.    <property name = "email"><null/></property>
286. </bean><property name = "email" value = ""/>
287. </bean><map>
288. <bean id = "..." class = "exampleBean">
289. <bean id = "..." class = "exampleBean">
290.    <property name = "email"><null/></property>
291. </bean><property name = "email" value = ""/>
292. </bean><bean id = "..." class = "exampleBean">
293. <bean id = "..." class = "exampleBean">
294.    <property name = "email"><null/></property>
295. </bean><property name = "email" value = ""/>
296. </bean><bean id = "..." class = "exampleBean">
297. <bean id = "..." class = "exampleBean">
298.    <property name = "email"><null/></property>
299. </bean><property name = "email" value = ""/>
300. </bean><bean id = "..." class = "exampleBean">
301. <bean id = "..." class = "exampleBean">
302.    <property name = "email"><null/></property>
303. </bean><property name = "email" value = ""/>
304. </bean><entry key = "one" value = "INDIA"/>
305. <bean id = "..." class = "exampleBean">
306. <bean id = "..." class = "exampleBean">
307.    <property name = "email"><null/></property>
308. </bean><property name = "email" value = ""/>
309. </bean><bean id = "..." class = "exampleBean">
310. <bean id = "..." class = "exampleBean">
311.    <property name = "email"><null/></property>
312. </bean><property name = "email" value = ""/>
313. </bean><bean id = "..." class = "exampleBean">
314. <bean id = "..." class = "exampleBean">
315.    <property name = "email"><null/></property>
316. </bean><property name = "email" value = ""/>
317. </bean><bean id = "..." class = "exampleBean">
318. <bean id = "..." class = "exampleBean">
319.    <property name = "email"><null/></property>
320. </bean><property name = "email" value = ""/>
321. </bean><entry key = "two" value-ref = "address1"/>
322. <bean id = "..." class = "exampleBean">
323. <bean id = "..." class = "exampleBean">
324.    <property name = "email"><null/></property>
325. </bean><property name = "email" value = ""/>
326. </bean><bean id = "..." class = "exampleBean">
327. <bean id = "..." class = "exampleBean">
328.    <property name = "email"><null/></property>
329. </bean><property name = "email" value = ""/>
330. </bean><bean id = "..." class = "exampleBean">
331. <bean id = "..." class = "exampleBean">
332.    <property name = "email"><null/></property>
333. </bean><property name = "email" value = ""/>
334. </bean><bean id = "..." class = "exampleBean">
335. <bean id = "..." class = "exampleBean">
336.    <property name = "email"><null/></property>
337. </bean><property name = "email" value = ""/>
338. </bean><entry key = "three" value-ref = "address2"/>
339. <bean id = "..." class = "exampleBean">
340. <bean id = "..." class = "exampleBean">
341.    <property name = "email"><null/></property>
342. </bean><property name = "email" value = ""/>
343. </bean><bean id = "..." class = "exampleBean">
344. <bean id = "..." class = "exampleBean">
345.    <property name = "email"><null/></property>
346. </bean><property name = "email" value = ""/>
347. </bean><bean id = "..." class = "exampleBean">
348. <bean id = "..." class = "exampleBean">
349.    <property name = "email"><null/></property>
350. </bean><property name = "email" value = ""/>
351. </bean></map>
352. <bean id = "..." class = "exampleBean">
353. <bean id = "..." class = "exampleBean">
354.    <property name = "email"><null/></property>
355. </bean><property name = "email" value = ""/>
356. </bean><bean id = "..." class = "exampleBean">
357. <bean id = "..." class = "exampleBean">
358.    <property name = "email"><null/></property>
359. </bean><property name = "email" value = ""/>
360. </bean></property>
361. <bean id = "..." class = "exampleBean">
362. <bean id = "..." class = "exampleBean">
363.    <property name = "email"><null/></property>
364. </bean><property name = "email" value = ""/>
365. </bean></bean>
367. </beans>

复制代码

要使用上述Bean定义，您需要以使它们能够处理引用的方式定义setter方法。
注入null和空字符串值
如果需要传递空字符串作为值，可以使用以下方式传递：

1. <bean id = "..." class = "exampleBean">
2. <bean id = "..." class = "exampleBean">
3.    <property name = "email"><null/></property>
4. </bean><property name = "email" value = ""/>
5. </bean>

复制代码

上述示例等效于Java代码：exampleBean.setEmail("")
如果需要传递NULL值，可以使用以下方式传递：

1. <bean id = "..." class = "exampleBean">
2. <bean id = "..." class = "exampleBean">
3.    <property name = "email"><null/></property>
4. </bean><property name = "email" value = ""/>
5. </bean>

复制代码

上述示例等效于Java代码：exampleBean.setEmail(null)
最后

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