springMVC框架登录abc.docx

1、springMVC框架登录abc本次工程结构图Spring 1 视图层.jsplogin.jsp base href= My JSP index.jsp starting page !- - 用户名：密码： error.jsp base href= My JSP error.jsp starting page !- - 十分对不起，登录失败，由于： success.jsp base href= My JSP success.jsp starting page !- - 恭喜：,登录成功 Spring 2.控制层package com.spring.controller;import java.

2、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;import com.spring.model.UserInfoBean;public class LoginController imp

3、lements Controller private String successPage; private String errorPage; /private UserInfoBean userInfoBean; public String getSuccessPage() return successPage; public void setSuccessPage(String successPage) this.successPage = successPage; public void setErrorPage(String errorPage) this.errorPage = e

4、rrorPage; private String getErrorPage() return errorPage; public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception String username=request.getParameter(username); String password=request.getParameter(password); String message=null; if(username=null

5、|password=null|username.trim().equals()|password.trim().equals() message= 用户名或者密码为空; Map model=new HashMap(); model.put(msg, message); return new ModelAndView(getErrorPage(),model); if(!UserInfoBean.exisitUser(username) message=username+不存在; Map model=new HashMap(); model.put(msg, message); return n

6、ew ModelAndView(getErrorPage(),model); if(!UserInfoBean.confirmPassword(username,password) message=username+密码不正确; Map model=new HashMap(); model.put(msg, message); return new ModelAndView(getErrorPage(),model); else Map model=new HashMap(); model.put(username,username); return new ModelAndView(getS

7、uccessPage(),model); / public UserInfoBean getUserInfoBean() / return userInfoBean;/ / public void setUserInfoBean(UserInfoBean userInfoBean) / this.userInfoBean = userInfoBean;/ Spring 3.模型层package com.spring.model;import java.util.HashMap;import java.util.Map;public class UserInfoBean private stat

8、ic Mapuserinfo=new HashMap(); static String numberOneUser=zhangsan; String numberOnePassword=123; String numberTwoUser=lisi; String numberTwoPassword=456; userinfo.put(numberTwoUser, numberTwoPassword); userinfo.put(numberOneUser, numberOnePassword); /判断一个用户名是否存在 public static boolean exisitUser(Str

9、ing username) return userinfo.containsKey(username); public static boolean confirmPassword(String username,String password) return userinfo.get(username).equals(password); Spring 编写配置文件：Web.xmlweb-app version=2.5 xmlns= xmlns:xsi=http:/www.w3.org/2001/XMLSchema-instance xsi:schemaLocation= 这里配置spring 的后台servlet dispatcherServlet org.springframework.web.servlet.DispatcherServlet指定spring配置文件的路径 contextConfigLocation /WEB-INF/classes/applicationContext.xml 1 拦截所有以.html结尾的请求，可以修改 dispatcherServlet *.html login.jsp Spring applicationContext.xmlloginerror.jspsuccess.jsp!- -!- -