圆咕噜咕噜 发表于 2024-11-30 23:18:56

SpringMVC-06-SSM整合

1、环境要求


[*]IDEA
[*]MySQL 8.x
[*]Tomcat 9
[*]Maven 3.6
这只是大型软件要求，项目相关的jar包依赖将在Maven中配置。
项目前置技能：MySQL、Mybatis、Spring、JavaWeb、简单的前端知识。
2、数据库表

创建一个存放书籍数据的数据库表
CREATE DATABASE `ssmbuild`;

USE `ssmbuild`;

DROP TABLE IF EXISTS `books`;

CREATE TABLE `books`
(
    `bookID`   INT(10)      NOT NULL AUTO_INCREMENT COMMENT '书id',
    `bookName`   VARCHAR(100) NOT NULL COMMENT '书名',
    `bookCounts` INT(11)      NOT NULL COMMENT '数量',
    `detail`   VARCHAR(200) NOT NULL COMMENT '描述',
    KEY `bookID` (`bookID`)
) ENGINE = INNODB
DEFAULT CHARSET = utf8;

INSERT INTO `books`(`bookID`, `bookName`, `bookCounts`, `detail`)
VALUES (1, 'Java', 1, '从入门到放弃'),
       (2, 'MySQL', 10, '从删库到跑路'),
       (3, 'Linux', 5, '从进门到进牢');3、基本项目搭建

新建Maven项目，SpringMVC-06-SSM，添加web框架支持。
编写pom.xml，导入依赖
<dependencies>
   
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
    </dependency>
   
    <dependency>
      <groupId>org.projectlombok</groupId>
      <artifactId>lombok</artifactId>
      <version>1.18.32</version>
    </dependency>
   
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>8.0.16</version>
    </dependency>
   
    <dependency>
      <groupId>com.mchange</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.5.2</version>
    </dependency>
   
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>servlet-api</artifactId>
      <version>2.5</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.1</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>
   
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.5.2</version>
    </dependency>
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>2.1.2</version>
    </dependency>
   
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>5.2.12.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>5.2.12.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>1.9.4</version>
    </dependency>
</dependencies>创建基本结构和配置框架

[*]com.moondream.controller 控制层
[*]com.moondream.service 服务层
[*]com.moondream.dao 持久层
[*]com.moondream.pojo 实体类
[*]web/WEB-INF/jsp 视图层
[*]resources

[*]mybatis-config.xml      Mybatis核心配置文件
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
      PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
      "https://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <settings>
      <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>

    <typeAliases>
      <package name=""/>
    </typeAliases>

    <mappers>
      <mapper resource=""/>
    </mappers>
</configuration>
[*]applicationContext.xml     Spring全局配置文件



4、Mybatis层(DAO层)

数据库配置文件 db.properties
driver=com.mysql.cj.jdbc.Driver
url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=false&characterEncoding=utf-8&serverTimezone=Asia/Shanghai
user=root
password=123456编写数据库表对应的实体类，使用Lombok依赖减少代码量
package com.moondream.pojo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@AllArgsConstructor
@NoArgsConstructor
public class Book {
    private Integer bookID;
    private String bookName;
    private Integer bookCounts;
    private String detail;
}编写MyBatis的核心配置文件 mybatis-config.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
      PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
      "https://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <settings>
      <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>

    <typeAliases>
      <package name=""/>
    </typeAliases>

    <mappers>
      <mapper resource=""/>
    </mappers>
</configuration>编写Mybatis的mapper映射文件 BookMapper.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper
      PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
      "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.moondream.dao.BookMapper">

   
    <insert id="addBook">
      insert into ssmbuild.books
      values (#{bookID}, #{bookName}, #{bookCounts}, #{detail});
    </insert>

   
    <delete id="deleteBookById">
      delete
      from ssmbuild.books
      where bookID = #{bookID};
    </delete>

   
    <update id="updateBook">
      update ssmbuild.books
      set bookName=#{bookName},
            bookCounts=#{bookCounts},
            detail=#{detail}
      where bookID = #{bookID};
    </update>

   
    <select id="queryAllBook" resultType="Book">
      select *
      from ssmbuild.books;
    </select>

   
    <select id="queryBookById" resultType="Book">
      select *
      from ssmbuild.books
      where bookID = #{bookID}
    </select>

</mapper>编写mapper映射文件对应的接口，可以更方便的调用Mybatis
package com.moondream.dao;

import com.moondream.pojo.Book;

import java.util.List;

public interface BookMapper {
    //增加一个Book
    int addBook(Book book);

    //根据id删除一个Book
    Integer deleteBookById(Integer id);

    //更新Book
    Integer updateBook(Book Book);

    //根据id查询,返回一个Book
    Book queryBookById(Integer id);

    //查询全部Book,返回list集合
    List<Book> queryAllBook();
}编写 spring-dao.xml，把Mybatis整合进Spring
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
      PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
      "https://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <settings>
      <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>

    <typeAliases>
      <package name=""/>
    </typeAliases>

    <mappers>
      <mapper resource=""/>
    </mappers>
</configuration><?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
      PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
      "https://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <settings>
      <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>

    <typeAliases>
      <package name=""/>
    </typeAliases>

    <mappers>
      <mapper resource=""/>
    </mappers>
</configuration><?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
      PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
      "https://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <settings>
      <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>

    <typeAliases>
      <package name=""/>
    </typeAliases>

    <mappers>
      <mapper resource=""/>
    </mappers>
</configuration><?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
      PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
      "https://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <settings>
      <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>

    <typeAliases>
      <package name=""/>
    </typeAliases>

    <mappers>
      <mapper resource=""/>
    </mappers>
</configuration><?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
      PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
      "https://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <settings>
      <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>

    <typeAliases>
      <package name=""/>
    </typeAliases>

    <mappers>
      <mapper resource=""/>
    </mappers>
</configuration>      到此，持久层编写完毕！

5、Spring层(Service层)

编写业务接口和接口实现
package com.moondream.service;

import com.moondream.pojo.Book;

import java.util.List;

//BookService: 需要具体实现,调用dao层
public interface BookService {
    //增加一个Book
    Integer addBook(Book book);

    //根据id删除一个Book
    Integer deleteBookById(Integer id);

    //更新Book
    Integer updateBook(Book Book);

    //根据id查询,返回一个Book
    Book queryBookById(Integer id);

    //查询全部Book,返回list集合
    List<Book> queryAllBook();
}package com.moondream.service;

import com.moondream.dao.BookMapper;
import com.moondream.pojo.Book;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class BookServiceImpl implements BookService {
    //调用dao层
    @Autowired
    private BookMapper bookMapper;

    public Integer addBook(Book book) {
      return bookMapper.addBook(book);
    }

    public Integer deleteBookById(Integer id) {
      return bookMapper.deleteBookById(id);
    }

    public Integer updateBook(Book Book) {
      return bookMapper.updateBook(Book);
    }

    public Book queryBookById(Integer id) {
      return bookMapper.queryBookById(id);
    }

    public List<Book> queryAllBook() {
      return bookMapper.queryAllBook();
    }
}编写 spring-service.xml ，Spring的service层配置文件
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
      PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
      "https://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <settings>
      <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>

    <typeAliases>
      <package name=""/>
    </typeAliases>

    <mappers>
      <mapper resource=""/>
    </mappers>
</configuration><?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
      PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
      "https://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <settings>
      <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>

    <typeAliases>
      <package name=""/>
    </typeAliases>

    <mappers>
      <mapper resource=""/>
    </mappers>
</configuration><?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
      PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
      "https://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <settings>
      <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>

    <typeAliases>
      <package name=""/>
    </typeAliases>

    <mappers>
      <mapper resource=""/>
    </mappers>
</configuration>    服务层编写完毕！

6、SpringMVC层(Controller层)

由于 Controller层 需要不断的与 View层 举行联动，
以是当我们编写完Controller层，实在View层也已经完成的差不多了。
编写 web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">

    <servlet>
      <servlet-name>DispatcherServlet</servlet-name>
      <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
      <init-param>
            <param-name>contextConfigLocation</param-name>
            
            <param-value>classpath:applicationContext.xml</param-value>
      </init-param>
      <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
      <servlet-name>DispatcherServlet</servlet-name>
      <url-pattern>/</url-pattern>
    </servlet-mapping>

   
    <filter>
      <filter-name>EncodingFilter</filter-name>
      <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
      <init-param>
            <param-name>encoding</param-name>
            <param-value>utf-8</param-value>
      </init-param>
    </filter>
    <filter-mapping>
      <filter-name>EncodingFilter</filter-name>
      <url-pattern>/*</url-pattern>
    </filter-mapping>

   
    <session-config>
      <session-timeout>15</session-timeout>
    </session-config>

</web-app>编写 spring-controller.xml ，Spring的Controller层配置
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
      PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
      "https://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <settings>
      <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>

    <typeAliases>
      <package name=""/>
    </typeAliases>

    <mappers>
      <mapper resource=""/>
    </mappers>
</configuration>      配置文件，暂时结束！现在举行 Controller层 和 View层 编写
BookController 类编写 ， 方法一：查询全部书籍
package com.moondream.controller;

@Controller
@RequestMapping("/book")
public class BookController {
    @Autowired
    private BookService bookService;

    @RequestMapping("/allBook")
    public String list(Model model) {
      List<Book> list = bookService.queryAllBook();
      model.addAttribute("list", list);
      return "allBook";
    }
}编写首页 index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<!DOCTYPE HTML>
<html>
<head>
    <title>首页</title>
   
</head>
<body>
<h3>
    <a target="_blank" href="https://www.cnblogs.com/${pageContext.request.contextPath}/book/allBook">点击进入列表页</a>
</h3>
</body>
</html>书籍列表页面 allbook.jsp
    书籍列表<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
      PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
      "https://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <settings>
      <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>

    <typeAliases>
      <package name=""/>
    </typeAliases>

    <mappers>
      <mapper resource=""/>
    </mappers>
</configuration>                      书籍列表 —— 显示所有书籍               

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
      PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
      "https://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <settings>
      <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>

    <typeAliases>
      <package name=""/>
    </typeAliases>

    <mappers>
      <mapper resource=""/>
    </mappers>
</configuration>新增                                                                                    书籍编号                  书籍名字                  书籍数目                  书籍详情                  操作                <?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
      PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
      "https://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <settings>
      <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>

    <typeAliases>
      <package name=""/>
    </typeAliases>

    <mappers>
      <mapper resource=""/>
    </mappers>
</configuration>                                          ${book.getBookID()}                        ${book.getBookName()}                        ${book.getBookCounts()}                        ${book.getDetail()}                                                    更改 |                            删除                                                                                                BookController 类编写 ， 方法二：添加书籍
@RequestMapping("/toAddBook")
public String toAddPaper() {
    return "addBook";
}

@RequestMapping("/addBook")
public String addPaper(Book book) {
    System.out.println(book);
    bookService.addBook(book);
    return "redirect:/book/allBook";
}添加书籍 页面：addBook.jsp
    新增书籍<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
      PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
      "https://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <settings>
      <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>

    <typeAliases>
      <package name=""/>
    </typeAliases>

    <mappers>
      <mapper resource=""/>
    </mappers>
</configuration>                      新增书籍               

                                    书籍名称：


      书籍数目：


      书籍详情：


            BookController 类编写 ， 方法三：修改书籍
@RequestMapping("/toUpdateBook")
public String toUpdateBook(Model model, Integer id) {
    Book book = bookService.queryBookById(id);
    System.out.println(book);
    model.addAttribute("book", book);
    return "updateBook";
}

@RequestMapping("/updateBook")
public String updateBook(Book book) {
    System.out.println(book);
    bookService.updateBook(book);
    return "redirect:/book/allBook";
}修改书籍 页面 updateBook.jsp
    修改信息<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
      PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
      "https://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <settings>
      <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>

    <typeAliases>
      <package name=""/>
    </typeAliases>

    <mappers>
      <mapper resource=""/>
    </mappers>
</configuration>                      修改信息               

                                          书籍名称：      书籍数目：      书籍详情：            BookController 类编写 ， 方法四：删除书籍
@RequestMapping("/del/{bookId}")
public String deleteBook(@PathVariable Integer bookId) {
    bookService.deleteBookById(bookId);
    return "redirect:/book/allBook";
}Controller层 与 View层 编写完毕！
末了，做一些收尾和辅助性的工作，比如，横切日志提示，表明当前程序实验到哪一步了……
在com.moondream包下，新增log包，编写切面
package com.moondream.log;import org.aspectj.lang.ProceedingJoinPoint;import org.aspectj.lang.annotation.Around;import org.aspectj.lang.annotation.Aspect;import org.springframework.stereotype.Component;import java.text.SimpleDateFormat;import java.util.Date;@Aspect@Componentpublic class IndicationLog {    @Around("within(com.moondream.*.*+)")    public Object Indication(ProceedingJoinPoint pjp) throws Throwable {      SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");      String date = sdf.format(new Date());      System.err.println("[" + date + "] " + pjp.getSignature().toShortString() + " ==>");      Object value = pjp.proceed();      System.err.println("
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