1. 项目目录
首先你需要会创建springMVC的入门工程（?SpringMVC入门实例，点击前往），工程的项目目录如下图所示。
2. 源文件的编写
2.1 xml 文件配置
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"><context-param><param-name>contextConfigLocation</param-name><param-value>/WEB-INF/applicationContext.xml</param-value></context-param><listener><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener><!-- SpringMVC 的前端控制器 --><servlet><servlet-name>dispatcher</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><load-on-startup>1</load-on-startup></servlet><!-- 拦截了以 ".form" 结尾的URL请求，Web 应用接收到该类请求之后 , 会调用前端控制器--><servlet-mapping><servlet-name>dispatcher</servlet-name><url-pattern>*.form</url-pattern></servlet-mapping><welcome-file-list><welcome-file>index.jsp</welcome-file></welcome-file-list></web-app>dispatcher-servlet.xml：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:context="http://www.springframework.org/schema/context"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"><!-- 扫描配置 --><context:component-scan base-package="com.study.springmvc.contoller"></context:component-scan></beans>applicationContext.xml：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"></beans>2.2 jsp文件配置
helloUser.jsp：
<%--Created by IntelliJ IDEA.User: YimsoDate: 2019/3/2Time: 10:48To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head><title>Title</title>
</head>
<body>
<h1>${message}</h1>
</body>
</html>
helloWorld.jsp
<%--Created by IntelliJ IDEA.User: YimsoDate: 2019/3/1Time: 16:25To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head><title>Title</title>
</head>
<body>
<h1>${message}</h1>
</body>
</html>
2.3 java 源文件编写：
HelloUserController.java:
package com.study.springmvc.contoller;import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;// @Controller 标识是一个控制器
@Controller
public class HelloUserController {// url请求中必须包含一个 username 的参数@RequestMapping(value = "/helloUser", params = "username")public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response)throws Exception {// 创建模型ModelAndView modelAndView = new ModelAndView();// 向 模型 中添加数据modelAndView.addObject("message", "Hello," + request.getParameter("username") + "!");// 返回逻辑视图modelAndView.setViewName("/WEB-INF/jsp/helloUser.jsp");return modelAndView;}
}
HelloWorldController.java：
package com.study.springmvc.contoller;import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;// @Controller 标志是一个控制器
@Controller
public class HelloWorldController{@RequestMapping("helloWorld")public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response)throws Exception {// 创建模型ModelAndView modelAndView = new ModelAndView();// 向 模型 中添加数据modelAndView.addObject("message", "Hello World");// 返回逻辑视图modelAndView.setViewName("/WEB-INF/jsp/helloWorld.jsp");return modelAndView;}
}
test.java
package com.study.springmvc;public class test {// empty
}
3 项目测试
3.1 测试helloWorld
访问 http://localhost:8080/helloWorld.form，运行结果如图所示：
3.2 测试helloUesr
访问http://localhost:8080/helloUser.form?username=springmvc，运行结果如图所示：
END。