14、SpringMVC之注解配置 - ToB企服应用市场:ToB评测及商务社交产业平台

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>online.liaojy</groupId>
<artifactId>spring_mvc_annotation</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.3.1</version>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.2.3</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.thymeleaf</groupId>
<artifactId>thymeleaf-spring5</artifactId>
<version>3.0.12.RELEASE</version>
</dependency>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.1</version>
</dependency>
</dependencies>
</project>

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package online.liaojy.interceptor;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* @author liaojy
* @date 2023/11/15 - 7:22
*/
public class AAAInterceptor implements HandlerInterceptor {
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
return true;
}
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
}
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
}
}

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<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>首页</title>
</head>
<body>
<h1>index.html</h1>
</body>
</html>

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<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>错误页面</title>
</head>
<body>
<h1>errorPage.html</h1>
</body>
</html>

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package online.liaojy.config;
/**
* @author liaojy
* @date 2023/11/16 - 23:59
* 该类用于代替spring的配置文件
*/
public class SpringConfig {
//ssm整合之后，spring的配置信息写在此类中
}

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package online.liaojy.config;
/**
* @author liaojy
* @date 2023/11/17 - 0:02
* 该类用于代替SpringMVC的配置文件
*/
public class SpringMVCConfig {
}

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package online.liaojy.config;
import org.springframework.web.filter.CharacterEncodingFilter;
import org.springframework.web.filter.HiddenHttpMethodFilter;
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
import javax.servlet.Filter;
/**
* @author liaojy
* @date 2023/11/17 - 0:04
*/
public class WebInit extends AbstractAnnotationConfigDispatcherServletInitializer {
// 指定代替 Spring 配置文件的配置类（可以按功能或需要来划分多个）
protected Class<?>[] getRootConfigClasses() {
return new Class[]{SpringConfig.class};
}
// 指定代替 SpringMVC 配置文件的配置类（可以按功能或需要来划分多个）
protected Class<?>[] getServletConfigClasses() {
return new Class[]{SpringMVCConfig.class};
}
// 设置 SpringMVC 的前端控制器 DispatcherServlet 需要处理的请求路径（即 url-pattern ）
protected String[] getServletMappings() {
return new String[]{"/"};
}
// 设置过滤器
@Override
protected Filter[] getServletFilters() {
// 配置编码过滤器
CharacterEncodingFilter characterEncodingFilter = new CharacterEncodingFilter();
characterEncodingFilter.setEncoding("UTF-8");
characterEncodingFilter.setForceEncoding(true);
// 配置处理请求方式的过滤器
// 注意该过滤器所在的包路径为 org.springframework.web.filter.HiddenHttpMethodFilter
HiddenHttpMethodFilter hiddenHttpMethodFilter = new HiddenHttpMethodFilter();
// 配置要使用的过滤器
return new Filter[]{characterEncodingFilter,hiddenHttpMethodFilter};
}
}

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// @Configurable 注解：将类标识为配置类
@Configurable

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package online.liaojy.controller;
import org.springframework.stereotype.Controller;
/**
* @author liaojy
* @date 2023/11/19 - 16:56
*/
@Controller
public class TestController {
}

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// @ComponentScan 注解：用于扫描指定包的组件
@ComponentScan("online.liaojy.controller")

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// 配置默认servlet处理器
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
configurer.enable();
}

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// @EnableWebMvc 注解：开启mvc的注解驱动
@EnableWebMvc

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// 配置视图控制器
public void addViewControllers(ViewControllerRegistry registry) {
// addViewController 设置视图控制器要处理的请求路径，setViewName 设置匹配请求路径的逻辑视图
registry.addViewController("/").setViewName("index");
}

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// 配置文件上传解析器
// @Bean 注解：用于将所标识方法的返回值作为一个 bean 来进行管理，bean的id为方法名
@Bean
public CommonsMultipartResolver multipartResolver(){
return new CommonsMultipartResolver();
}

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// 配置拦截器
public void addInterceptors(InterceptorRegistry registry) {
AAAInterceptor aaaInterceptor = new AAAInterceptor();
// addInterceptor 设置要使用的拦截器，
// addPathPatterns 设置该拦截器要拦截的请求路径（ /** 表示所有路径），excludePathPatterns 设置要排除的拦截路径
registry.addInterceptor(aaaInterceptor).addPathPatterns("/**").excludePathPatterns("/abc");
}

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// 配置异常解析器
public void configureHandlerExceptionResolvers(List<HandlerExceptionResolver> resolvers) {
// 创建 SimpleMappingExceptionResolver 异常解析器，来对控制器方法出现的异常进行自定义异常处理
SimpleMappingExceptionResolver simpleMappingExceptionResolver = new SimpleMappingExceptionResolver();
// 设置异常和错误提示页面的映射关系
Properties properties = new Properties();
properties.setProperty("java.lang.ArithmeticException", "errorPage");
simpleMappingExceptionResolver.setExceptionMappings(properties);
// 设置共享到域对象中的异常信息的属性名
simpleMappingExceptionResolver.setExceptionAttribute("exceptionMessage");
// 添加要使用的异常解析器器
resolvers.add(simpleMappingExceptionResolver);
}

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//配置生成模板解析器
@Bean
public ITemplateResolver templateResolver() {
WebApplicationContext webApplicationContext = ContextLoader.getCurrentWebApplicationContext();
// ServletContextTemplateResolver 需要一个 ServletContext 作为构造参数，可通过 WebApplicationContext 的方法获得
ServletContextTemplateResolver templateResolver =
new ServletContextTemplateResolver(webApplicationContext.getServletContext());
templateResolver.setPrefix("/WEB-INF/templates/");
templateResolver.setSuffix(".html");
templateResolver.setCharacterEncoding("UTF-8");
templateResolver.setTemplateMode(TemplateMode.HTML);
return templateResolver;
}
//生成模板引擎并为模板引擎注入模板解析器
@Bean
public SpringTemplateEngine templateEngine(ITemplateResolver templateResolver) {
SpringTemplateEngine templateEngine = new SpringTemplateEngine();
templateEngine.setTemplateResolver(templateResolver);
return templateEngine;
}
//生成视图解析器并为解析器注入模板引擎
@Bean
public ViewResolver viewResolver(SpringTemplateEngine templateEngine) {
ThymeleafViewResolver viewResolver = new ThymeleafViewResolver();
viewResolver.setCharacterEncoding("UTF-8");
viewResolver.setTemplateEngine(templateEngine);
return viewResolver;
}

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package online.liaojy.config;import online.liaojy.interceptor.AAAInterceptor;import org.springframework.beans.factory.annotation.Configurable;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.ComponentScan;import org.springframework.web.context.ContextLoader;import org.springframework.web.context.WebApplicationContext;import org.springframework.web.multipart.commons.CommonsMultipartResolver;import org.springframework.web.servlet.HandlerExceptionResolver;import org.springframework.web.servlet.ViewResolver;import org.springframework.web.servlet.config.annotation.*;import org.springframework.web.servlet.handler.SimpleMappingExceptionResolver;import org.thymeleaf.spring5.SpringTemplateEngine;import org.thymeleaf.spring5.view.ThymeleafViewResolver;import org.thymeleaf.templatemode.TemplateMode;import org.thymeleaf.templateresolver.ITemplateResolver;import org.thymeleaf.templateresolver.ServletContextTemplateResolver;import java.util.List;import java.util.Properties;/** * @author liaojy * @date 2023/11/17 - 0:02 * 该类用于代替SpringMVC的配置文件 */// @Configurable 注解：将类标识为配置类
@Configurable// @ComponentScan 注解：用于扫描指定包的组件
@ComponentScan("online.liaojy.controller")// @EnableWebMvc 注解：开启mvc的注解驱动
@EnableWebMvcpublic class SpringMVCConfig implements WebMvcConfigurer { // 配置默认servlet处理器
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
configurer.enable();
} // 配置视图控制器
public void addViewControllers(ViewControllerRegistry registry) {
// addViewController 设置视图控制器要处理的请求路径，setViewName 设置匹配请求路径的逻辑视图
registry.addViewController("/").setViewName("index");
} // 配置文件上传解析器
// @Bean 注解：用于将所标识方法的返回值作为一个 bean 来进行管理，bean的id为方法名
@Bean
public CommonsMultipartResolver multipartResolver(){
return new CommonsMultipartResolver();
} // 配置拦截器
public void addInterceptors(InterceptorRegistry registry) {
AAAInterceptor aaaInterceptor = new AAAInterceptor();
// addInterceptor 设置要使用的拦截器，
// addPathPatterns 设置该拦截器要拦截的请求路径（ /** 表示所有路径），excludePathPatterns 设置要排除的拦截路径
registry.addInterceptor(aaaInterceptor).addPathPatterns("/**").excludePathPatterns("/abc");
} // 配置异常解析器
public void configureHandlerExceptionResolvers(List<HandlerExceptionResolver> resolvers) {
// 创建 SimpleMappingExceptionResolver 异常解析器，来对控制器方法出现的异常进行自定义异常处理
SimpleMappingExceptionResolver simpleMappingExceptionResolver = new SimpleMappingExceptionResolver();
// 设置异常和错误提示页面的映射关系
Properties properties = new Properties();
properties.setProperty("java.lang.ArithmeticException", "errorPage");
simpleMappingExceptionResolver.setExceptionMappings(properties);
// 设置共享到域对象中的异常信息的属性名
simpleMappingExceptionResolver.setExceptionAttribute("exceptionMessage");
// 添加要使用的异常解析器器
resolvers.add(simpleMappingExceptionResolver);
} //配置生成模板解析器
@Bean
public ITemplateResolver templateResolver() {
WebApplicationContext webApplicationContext = ContextLoader.getCurrentWebApplicationContext();
// ServletContextTemplateResolver 需要一个 ServletContext 作为构造参数，可通过 WebApplicationContext 的方法获得
ServletContextTemplateResolver templateResolver =
new ServletContextTemplateResolver(webApplicationContext.getServletContext());
templateResolver.setPrefix("/WEB-INF/templates/");
templateResolver.setSuffix(".html");
templateResolver.setCharacterEncoding("UTF-8");
templateResolver.setTemplateMode(TemplateMode.HTML);
return templateResolver;
}
//生成模板引擎并为模板引擎注入模板解析器
@Bean
public SpringTemplateEngine templateEngine(ITemplateResolver templateResolver) {
SpringTemplateEngine templateEngine = new SpringTemplateEngine();
templateEngine.setTemplateResolver(templateResolver);
return templateEngine;
}
//生成视图解析器并为解析器注入模板引擎
@Bean
public ViewResolver viewResolver(SpringTemplateEngine templateEngine) {
ThymeleafViewResolver viewResolver = new ThymeleafViewResolver();
viewResolver.setCharacterEncoding("UTF-8");
viewResolver.setTemplateEngine(templateEngine);
return viewResolver;
}}

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