构建过程
项目结构如图
image.png
pom.xml，添加springmvc相关依赖
<?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>com.haijunyin</groupId>
<artifactId>springmvcdemo-xmlconfig</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.3.8.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.3.8.RELEASE</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
</dependencies>
</project>
HelloController.class
package com.haijunyin.springmvcdemo.xmlconfig.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
@Controller
@RequestMapping("/hello")
public class HelloController {
//返回String类型代表页面跳转
@RequestMapping(value = "/ref",method = RequestMethod.GET)
public String refHello(){
System.out.println("HelloController...refHello...");
return "hello";
}
//使用RequestParam注解直接获取值
@RequestMapping(value = "/show",method = RequestMethod.POST)
public void showHello(@RequestParam(value = "name")String name, HttpServletResponse resp) throws ServletException, IOException {
System.out.println("ShowHelloServlet...doPost...");
//获取值，并设置编码
System.out.println("name=" + name);
//输出，解决浏览器乱码问题
resp.setHeader("Content-type", "text/html;charset=UTF-8");
resp.setCharacterEncoding("UTF-8");
resp.getWriter().write("我很好，你呢？");
System.out.println("输出...");
}
}
index.jsp
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head></head>
<body>
<a href="/hello/ref">hello</a>
</body>
</html>
MySpringmvcInitializer.class，相当于xml中的web.xml
package com.haijunyin.springmvcdemo.annotationconfig.config;
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
/**
* SpringMVC初始化器，用于替代web.xml中的spring相关配置
* 该类是WebApplicationInitializer的子类，spring工程在初始化的时候会实例化其所有子类
*/
public class MySpringmvcInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {
protected Class<?>[] getRootConfigClasses() {
return new Class[0];
}
//引入配置类
protected Class<?>[] getServletConfigClasses() {
return new Class[]{SpringmvcServletConfig.class};
}
//mapping映射
protected String[] getServletMappings() {
return new String[]{"/"};
}
}
SpringmvcServletConfig.cass，相当于springmvc-servlet.xml
package com.haijunyin.springmvcdemo.annotationconfig.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.*;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
/**
* 替代springmvc-servlet.xml文件
*/
@Configuration
@EnableWebMvc
@ComponentScan(value = "com.haijunyin.springmvcdemo")
public class SpringmvcServletConfig extends WebMvcConfigurerAdapter {
/** 初始化视图解析器 **/
@Bean
public ViewResolver getViewResolver(){
InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
viewResolver.setPrefix("/WEB-INF/static/");
viewResolver.setSuffix(".html");
return viewResolver;
}
/** 默认静态资源处理器 **/
@Override
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
configurer.enable();
}
/** 静态资源处理 **/
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
super.addResourceHandlers(registry);
}
/** 其它常用方法 */
// /** 解决跨域问题 **/
// public void addCorsMappings(CorsRegistry registry) ;
// /** 添加拦截器 **/
// void addInterceptors(InterceptorRegistry registry);
// /** 这里配置视图解析器 **/
// void configureViewResolvers(ViewResolverRegistry registry);
// /** 配置内容裁决的一些选项 **/
// void configureContentNegotiation(ContentNegotiationConfigurer configurer);
// /** 视图跳转控制器 **/
// void addViewControllers(ViewControllerRegistry registry);
}
运行结果
项目构建完成后启动tomcat
1547104625527.gif
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