index.jsp
<%--
Created by IntelliJ IDEA.
User: 黄国栋
Date: 2020/6/26
Time: 18:27
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>JSON格式数据参数绑定</title>
</head>
<body>
<h1>
<a href="user/userLogin">跳转到登陆页面</a>
</h1>
</body>
</html>
login.jsp
<%--
Created by IntelliJ IDEA.
User: 黄国栋
Date: 2020/6/30
Time: 23:19
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
<html>
<head>
<title>登陆页面</title>
</head>
<body>
<form action="login" method="post">
<table align="center" border="1" cellspacing="0">
<tr>
<td>用户名:<input type="text" name="username"></td>
</tr>
<tr>
<td>密 码:<input type="text" name="password"></td>
</tr>
<tr>
<td><input type="submit" name="登 陆"></td>
</tr>
</table>
</form>
</body>
</html>
success.jsp
<%--
Created by IntelliJ IDEA.
User: 黄国栋
Date: 2020/6/27
Time: 19:55
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>成功</title>
</head>
<body>
<h1 align="center">
<a href="logout">退出登陆</a>
</h1>
</body>
</html>
springmvc.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
">
<!--配置处理器适配器和处理器映射器-->
<mvc:annotation-driven conversion-service="conversionService"/>
<!--配置转换器-->
<bean id="conversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean">
<property name="converters">
<set>
<bean class="com.hgd.ssm.utils.DateConverter"></bean>
</set>
</property>
</bean>
<!--配置视图解析器-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>
<!--扫描controller-->
<context:component-scan base-package="com.hgd.ssm.controller"/>
<!--文件上传-->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!--上传文件的大小-->
<property name="maxUploadSize" value="100000000"></property>
</bean>
<!--配置拦截器-->
<mvc:interceptors>
<mvc:interceptor>
<mvc:mapping path="/**"/>
<mvc:exclude-mapping path="/user/**"/>
<bean class="com.hgd.ssm.interceptor.LoginInterceptor"/>
</mvc:interceptor>
</mvc:interceptors>
</beans>
LoginInterceptor.java
package com.hgd.ssm.interceptor;
import org.springframework.web.servlet.HandlerInterceptor;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* @auther 黄国栋
* @data 2020-06-30 23:09
* @since
*
* 登陆拦截器
*
*/
public class LoginInterceptor implements HandlerInterceptor {
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
//获取请求的uri
String requestURI = request.getRequestURI();
System.out.println("requestURI = " + requestURI);
//判断请求的uri地址是否公开地址
if (requestURI.indexOf("user/userLogin")>-1){
return true;
}
//判断session是否存在username
String username = (String) request.getSession().getAttribute("username");
System.out.println("username = " + username);
if (username != null && !username.equals("")) {
return true;
}
//不符合条件的，跳转到登录界面
request.getRequestDispatcher("/WEB-INF/jsp/login.jsp").forward(request, response);
return false;
}
}
LoginController.java
package com.hgd.ssm.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import javax.servlet.http.HttpSession;
/**
* @auther 黄国栋
* @data 2020-06-30 23:23
* @since
*/
@Controller
@RequestMapping("user")
public class LoginController {
//跳转到登陆页面
@RequestMapping("userLogin")
public String userLogin(){
System.out.println("AAAAAAAAAAAAAAAAAAAAAAAAAAA");
return "login";
}
//登陆
@RequestMapping("login")
public String login(HttpSession session,String username){
System.out.println(username);
//把用户名保存到session
session.setAttribute("username", username);
return "success";
}
//退出
@RequestMapping("logout")
public String logout(HttpSession session){
//清楚session
System.out.println("CCCCCCCCCCCCCCCCCCCCCCCCCCC");
session.invalidate();
return "login";
}
}
