Spring MVC

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Spring MVC

Spring MVC 处理流程

特点：

1清晰的角色划分

2强大的直接配置方式

3可适配、非侵入的controller

4可以重用的业务代码

5可指定绑定和验证

6可定制

SpringMVC 配置文件

<context:component-scan base-package="com."></context:component-scan>

</bean>

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>  <head>    <base href="<%=basePath%>">        <title>My JSP 'index.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"><!--<link rel="stylesheet" type="text/css" href="styles.css">-->  </head>    <body>    This is my JSP page. <br>        <a href="hello">hello SpringMvc  </a>    <a href="test1"> 返回V1</a>        <a href="test2"> 返回V2</a>                <a href="test3/10/张三"> 参数</a>                        <form action="doLogin" method="get">           <input type="text" name="userName">         <input type="text" name="userPwd">          <input type="submit" value="参数传递">                  </form>                        <a href="doLogin?userName=张宇峰&userPwd=123"> 参数占位</a>                <form action="doLogin2" method="post">           <input type="text" name="userName">         <input type="text" name="userPwd">          <input type="submit" value="参数传递">                  </form>               <form action="file/upload" method="post"           enctype="multipart/form-data">      <input type="file" name="file" />      <input type="submit" value="上传Excel" />    </form>        <form action="file/upload1" method="post"           enctype="multipart/form-data">      <input type="file" name="file" />      <input type="submit" value="上传Excel1" />    </form>  </body></html>

<?xml version="1.0" encoding="UTF-8"?><web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">  <display-name></display-name>  <welcome-file-list>    <welcome-file>index.jsp</welcome-file>  </welcome-file-list><!-- 分发Servlert -->    <servlet>       <servlet-name>mvc</servlet-name>       <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>       <init-param>       <param-name>contextConfigLocation</param-name>       <param-value>classpath:applicationContext.xml</param-value>       </init-param> <load-on-startup>1</load-on-startup>  </servlet>  <servlet-mapping>      <servlet-name>mvc</servlet-name>      <url-pattern>/</url-pattern>  </servlet-mapping>  <filter>       <filter-name>CharacterEncodingFilter</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>    </filter>    <filter-mapping>       <filter-name>CharacterEncodingFilter</filter-name>       <url-pattern>/*</url-pattern>  </filter-mapping>    </web-app>

<?xml version="1.0" encoding="UTF-8"?><beansxmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xmlns:p="http://www.springframework.org/schema/p"    xmlns:context="http://www.springframework.org/schema/context"    xmlns:mvc="http://www.springframework.org/schema/mvc"    xsi:schemaLocation="        http://www.springframework.org/schema/beans        http://www.springframework.org/schema/beans/spring-beans.xsdhttp://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"><!-- 自动装配 --><context:component-scan base-package="com.jredu.action"></context:component-scan><!-- 设置视图解析器 --><bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"><property name="prefix" value="/WEB-INF/pages/"></property><property name="suffix" value=".jsp"></property></bean><!-- 上传组件 --><!-- 上传组件 -->   <bean id="multipartResolver"    class="org.springframework.web.multipart.commons.CommonsMultipartResolver">   <!-- 设置上传的编码格式 -->   <property name="defaultEncoding" value="utf-8"/>   <!-- 设置最大上传大小 -->   <property name="maxUploadSize" value="5242880"/>   </bean></beans>

package com.jredu.action;import java.io.File;import java.io.IOException;import javax.servlet.http.HttpSession;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.PathVariable;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import org.springframework.web.bind.annotation.RequestParam;import org.springframework.web.multipart.MultipartFile;import com.jredu.Excal.TestExcal;@Controllerpublic class HelloSpringMvc {@RequestMapping("/hello")public  String hello(){System.out.print("hello");return "ok";}@RequestMapping("/test1")public  String text1(){System.out.print("text1");return "v1/proj1";}@RequestMapping("/test2")public  String text2(){System.out.print("text2");return "v2/proj2";}@RequestMapping("/test3/{userid}/{userName}")public  String text3(@PathVariable("userid")Integer id,@PathVariable("userName")String name){System.out.print("用户ID："+id+"：名字："+name);return "v2/proj2";}@RequestMapping(value="/doLogin",method=RequestMethod.GET)public  String doLogin(String userName,String userPwd){System.out.println("用户名："+userName+"：密码："+userPwd);return "v2/proj2";}@RequestMapping(value="/doLogin2",method=RequestMethod.POST)public  String Login(@RequestParam(value="userName",required=true)String userName,@RequestParam(value="userPwd",required=true)String userPwd){System.out.println("用户名："+userName+"：密码："+userPwd);return "v2/proj2";}//上传EXCLE@RequestMapping("file/upload")public String upload(HttpSession session,@RequestParam MultipartFile file) throws IllegalStateException,IOException{//如果文件不为空if(!file.isEmpty()){//上传的服务器路径String location=session.getServletContext().getRealPath("upload");file.transferTo(new File(location+"/"+System.currentTimeMillis()+file.getOriginalFilename()));}return "v2/proj2";}//上传excel @RequestMapping("file/upload1") public String upload1(HttpSession session,              @RequestParam MultipartFile file)        throws IllegalStateException,IOException{ if (!file.isEmpty()) {String localtion=session.getServletContext().getRealPath("upload");String path=localtion+"/"+System.currentTimeMillis()+file.getOriginalFilename();System.out.println(path);file.transferTo(new File(path));TestExcal.start(path);} return "v2/proj2"; }}

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