开发第一个SPringMVC的程序

1.到如SPringMVC的jar包

2.配置web.xml文件（详情见SPringMVC的web.xml配置）

3.配置在classpath目录下的SPringMVC.xml文件

<?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:mvc="http://www.springframework.org/schema/mvc"xmlns:context="http://www.springframework.org/schema/context"xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd "><!-- 配置HandlerMapping处理器映射器对象 --><bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"></bean><!-- 配置HandlerAdapter处理器适配对象（适配器） --><bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"></bean><!-- 配置视图解析 --><bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"><property name="prefix" value="/WEB-INF/student/"></property><property name="suffix" value=".jsp"></property></bean><!-- 配置处理器（页面发送请求进入方法） --><bean name="/student.action" class="com.mingde.controller.Studentlist"></bean></beans>

一开始执行服务端，然后在URL地址后面加上配置处理器的name，然后映射器去解析上面的URL地址，然后映射给配置处理器的class路径，找到那个studentlist.java文件，接着由适配器进入该studentlist.java文件执行里面的handleRequest方法，执行完后如果需要跳转到响应页面的话，那么会跳转到配置视图解析的指定位置，如/WEB-INF/student/XXX.JSP(XXX是指后台转过来的指定页面)

实体类和dao层在此省略……

controller中的Studentlist

package com.mingde.controlle;import java.util.List;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.apache.commons.beanutils.BeanUtils;import org.springframework.web.servlet.ModelAndView;import org.springframework.web.servlet.mvc.Controller;import com.mingde.dao.StudentDao;import com.mingde.dao.impl.StudentDaoImpl;import com.mingde.po.Student;public class Studentlist implements Controller {@Overridepublic ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {String cmd = request.getParameter("cmd");if("list".equals(cmd))return list();if("toAdd".equals(cmd))return new ModelAndView("toAdd");if("add".equals(cmd))return add(request,response);if("toUpdate".equals(cmd))return toUpdate(request,response);if("update".equals(cmd))return update(request,response);if("delete".equals(cmd))return delete(request,response);return null;}private ModelAndView delete(HttpServletRequest request, HttpServletResponse response) throws Exception {String sid = request.getParameter("sid");StudentDao sd=new StudentDaoImpl();sd.delete(sid);response.sendRedirect("student.action?cmd=list");return null;}private ModelAndView update(HttpServletRequest request, HttpServletResponse response) throws Exception {Student st=new Student();BeanUtils.populate(st, request.getParameterMap());StudentDao sd=new StudentDaoImpl();sd.update(st);response.sendRedirect("student.action?cmd=list");return null;}private ModelAndView toUpdate(HttpServletRequest request, HttpServletResponse response) throws Exception {String sid = request.getParameter("sid");StudentDao sd=new StudentDaoImpl();Student student = sd.find(sid);ModelAndView mv=new ModelAndView("update");mv.addObject("st", student);return mv;}private ModelAndView add(HttpServletRequest request, HttpServletResponse response) throws Exception {Student st=new Student();org.apache.commons.beanutils.BeanUtils.populate(st,request.getParameterMap());StudentDao sd=new StudentDaoImpl();sd.add(st);return list();}private ModelAndView list() {try {StudentDao sd=new StudentDaoImpl();List list;list = sd.SeeAll();ModelAndView mv=new ModelAndView("list");//在构造是可以指定都跳转的视图：如要跳转到listmv.addObject("list", list);//添加模型对象return mv;} catch (Exception e) {e.printStackTrace();}return null;}}