springMVC 入门

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springMVC

springMVC

web.xml 简单配置

   <servlet-name>springMVC</servlet-name>
   <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
   <init-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath*:config/spring-servlet.xml</param-value>
   </init-param>
   <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
<servlet-name>springMVC</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>

<filter>
   <filter-name>springMVCEncoding</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>
    <init-param>
   <param-name>forceEncoding</param-name>
   <param-value>true</param-value>
   </init-param>
</filter>
   <filter-mapping>
   <filter-name>springMVCEncoding</filter-name>
   <url-pattern>/*</url-pattern>
   </filter-mapping>

spring-servlet.xml 配置目录在src 下面的config包中和web.xml中相对应

<bean name="/test1/helloword" class="com.tgb.web.controller.HelloWordController"></bean>

<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">

<property name="prefix" value="/"/>

<property name="suffix" value=".jsp"/>
</bean>

<mvc:resources location="/res/" mapping="/res/**"/>
</beans>

HelloWordController.java 文件在com.tgb.web.controller 包中和spring-servlet.xml 中的路径对上

package com.tgb.web.controller;

import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;

public class HelloWordController implements Controller {
/**
* 一个Controller 多个方法
*
* */
public ModelAndView handleRequest(HttpServletRequest arg0,
   HttpServletResponse arg1) throws Exception {
  // TODO Auto-generated method stub
  System.out.println("hello tgb");
  String hello = "hello spring mvc 中文";

  //很明显这里用的是转发所以前台取数据用 request.getAttribute 或者 ${requestScope.} 或者%{}
  Map<Integer,String> map = new HashMap<Integer, String>();
  map.put(1,"中文aa");
  map.put(2,"中文bb");
  map.put(3,"中文cc");
  map.put(4,"中文dd");
  return new ModelAndView("/welcome","map",map);
}

}

welcome.jsp 文件

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>

    <title>My JSP 'welcome.jsp' starting page</title>

<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">

</head>

<body>

   <p>--------------------------------------</p>
   <table border="1">
   <c:forEach items="${map}" var="m" step="1" begin="0" varStatus="aaa">
    <tr>
    <td>${aaa.index +1}</td>
    <td>${m.key}</td>
    <td>${m.value}</td>
    </tr>
   </c:forEach>
   </table>


</body>
</html>