Spring MVC primary！

步骤：1.定义一个handler处理器，并且实现controller接口

package jk.handlers;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

importorg.springframework.web.servlet.ModelAndView;

importorg.springframework.web.servlet.mvc.Controller;

//定义处理器

public class SomeHandler implements Controller {

@Override

publicModelAndView handleRequest(HttpServletRequest request,

HttpServletResponseresponse) throws Exception {

// 以下语句等价于=request.setAttribute("message","HelloSpringMVC World!")

ModelAndViewmv = new ModelAndView();

mv.addObject("message","Hello SpringMVC World!");

mv.setViewName("/WEB-INF/welcome.jsp");

returnmv;

}

2.下一步定义的跳转的界面定义到web-inf页面下，比较其他页面下，相对安全性更高，不能重定向,只能通过java代码实现跳转

<?xml version="1.0"encoding="UTF-8"?>

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaeehttp://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">

<display-name>01.SpringMvc</display-name>

<servlet-name>springmvc</servlet-name>

<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

</servlet>

<servlet-mapping>

<servlet-name>springmvc</servlet-name>

<url-pattern>*.do</url-pattern>

</servlet-mapping>

</web-app>

3.注册somehandler容器xml:springMvc

Id必须/开头，当然ID=name

<%@ page language="java"contentType="text/html; charset=ISO-8859-1"

pageEncoding="ISO-8859-1"%>

<!DOCTYPE html PUBLIC"-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<title>Insert title here</title>

</head>

<body>

Welcome page <br>

${message }<br>

${requestScope.message}<br>

</body>

</html>

4.定义一个中央调度器（中央控制器，前端控制器）DispatchServlet

<?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">

</bean>

</beans>

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