SpringMVC学习笔记——SpringMVC的简单应用（通过注解的方式）

来源：互联网发布：青岛雨人软件编辑：程序博客网时间：2024/06/10 19:50

JSP 页面：

<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%><%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 'login.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><form method="post" action="login.do" name="loginForm"><p> username:<input type="text" name="username"></p><p> password:<input type="password" name="password"><br></p><p> <input type="submit" value="login" name="loginBtn"></p></form> </body></html>

成功页面：

<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%><%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 'success.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 Success page. <br>    <h2>${hello}</h2>  </body></html>

web.xml配置：

<?xml version="1.0" encoding="UTF-8"?><web-app version="2.5" 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_2_5.xsd"> <servlet><servlet-name>testSMVC</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><init-param><param-name>contextConfigLocation</param-name><param-value>/WEB-INF/classes/*-servlet.xml</param-value></init-param><load-on-startup>1</load-on-startup></servlet><servlet-mapping><servlet-name>testSMVC</servlet-name><url-pattern>*.do</url-pattern></servlet-mapping>  <welcome-file-list>    <welcome-file>index.jsp</welcome-file>  </welcome-file-list></web-app>

实体bean:

package com.lovo.bean;public class UserBean {private String username;private String password;public String getUsername() {return username;}public void setUsername(String username) {this.username = username;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}}

控制器：（通过注解方式告知）

import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.servlet.ModelAndView;import com.lovo.bean.UserBean;@Controllerpublic class LoginController {////第一种方式：通过request、response获取数据//@RequestMapping("/login")//public ModelAndView login(HttpServletRequest request,HttpServletResponse response){//String username = request.getParameter("username");//System.out.println(username);//ModelAndView mav = new ModelAndView("success");//mav.addObject("hello", username);//return mav;//}//第二种方式：通过传bean来获取数据@RequestMapping("/login")public String login(UserBean user){System.out.println(user.getUsername() + "  " + user.getPassword());return null;}}

*_Servlet.xml:

<?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: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-3.0.xsd   http://www.springframework.org/schema/context   http://www.springframework.org/schema/context/spring-context-3.0.xsd   http://www.springframework.org/schema/mvc      http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">   <!-- 默认的注解映射的支持 -->    <mvc:annotation-driven />    <!--启用自动扫描  -->    <context:component-scan base-package="com.lovo.controller" />      <!-- ViewResolver 视图解析器（InternalResourceViewResolver专门针对jstl的） -->     <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">         <property name="prefix" value="/" />         <property name="suffix" value=".jsp" />     </bean> </beans>

效果：