Struts2自定义登录验证拦截器

秒速五厘米 2022-01-16 11:17 327阅读 0赞

[2019独角兽企业重金招聘Python工程师标准>>> ][2019_Python_] ![hot3.png][]

Controller.UserAction.java

package Controller;
    
    import java.util.Map;
    
    import com.opensymphony.xwork2.ActionContext;
    
    public class UserAction {
    	private String username;
    	private String pass;
    	//|POST 外部注入 UserLog方法！
    	public String getUsername() {
    		return username;
    	}
    	public void setUsername(String username) {
    		this.username = username;
    	}
    	public String getPass() {
    		return pass;
    	}
    	public void setPass(String pass) {
    		this.pass = pass;
    	}
    	//|登录页
    	public String UserLogin()
    	{
    		
    		return "success";
    	}
    	//|登录结果页
    	public String UserLog()
    	{
    	
    		System.out.println(this.pass);
    		System.out.println(this.username);
    		if(this.username.equals("admin")&&this.pass.equals("admin"))
    		{
    			ActionContext act=ActionContext.getContext();
    			Map<String,Object> sessionMap=(Map<String,Object>)act.getSession();
    			sessionMap.put("username", "admin");
    			return "success";
    		}
    		
    		
    		return "failure";
    	}
    	//|用户中心页面
    	public String UserCenter()
    	{
    		return "success";
    	}
    	//|用户注销
    	public String UserLogOut()
    	{
    		ActionContext act=ActionContext.getContext();
    		Map<String,Object> sessionMap=(Map<String,Object>)act.getSession();
    		//|清空session（注销）
    		sessionMap.clear();
    		return "success";
    	}
    
    
    }

Controller.UserInterceptor.java

package Controller;
    /*******
     * 自定义拦截器  拦截 没有登录的用户  Author:邱于涵
     * ******/
    import java.util.Map;
    
    import com.opensymphony.xwork2.ActionContext;
    import com.opensymphony.xwork2.ActionInvocation;
    import com.opensymphony.xwork2.interceptor.MethodFilterInterceptor;
    
    /*AbstractClass Use extends ,Interface Use implements
     *AbstractInterceptor继承于MethodFilterInterceptor
     *使用MethodFilterInterceptor才能设置<param name="excludeMethods" >method1,...</param>
     *实现doIntercept方法 
     */
    public class UserInterceptor extends MethodFilterInterceptor{
    
    
    	@Override
    	protected String doIntercept(ActionInvocation invocation) throws Exception {
    	  // TODO Auto-generated method stub
    	  ActionContext act=ActionContext.getContext();
    	  Map<String,Object> sessionMap=(Map<String,Object>)act.getSession();
    	  System.out.println("test拦截器 正在过滤...");
    	  System.out.println(sessionMap.get("username"));
    	  if(sessionMap.get("username")!=null)
    	  //|session有值 就 执行下一步
    	  invocation.invoke();
    	  //|否则就返回 failure作为 result 根据struts.xml返回<result name="failure">/User/UserLogin.jsp</result>
    	  return "failure";
    	}
    
    }

struts.xml

<?xml version="1.0" encoding="UTF-8" ?>
    <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
    <struts>
    <package name="User"  extends="struts-default" namespace="/User">
    
    <interceptors>
    <interceptor name="test" class="Controller.UserInterceptor">
    </interceptor>
    </interceptors>
    
    <action name="User*" class="Controller.UserAction" method="User{1}">
    
    
    <interceptor-ref name="test">
    
    <param name="excludeMethods">UserLogin,UserLog</param>
    </interceptor-ref>
    
    <interceptor-ref name="defaultStack"/>
    <result name="success">/User/User{1}.jsp</result>
    <result name="failure">/User/UserLogin.jsp</result>
    
    </action>
    </package>
    
    </struts>

index.jsp

<%@ 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">
    	
      </head>
      
      <body>
        This is my JSP page. <br>
        This is WebApp Directory:<br/>
        <%=request.getContextPath() %><br/>
        <a href="User/UserLogin.action">登录用户</a>
        <br/>
        Powered By 涵涵
      </body>
    </html>

User/UserLogin.jsp用户登录表单页面

<%@ 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>用户登录</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">
    	
    
      </head>
      
      <body>
       这是通配符映射<a href="<%=request.getContextPath() %>">返回到首页</a><br/>
       <form action="<%=request.getContextPath() %>/User/UserLog.action" method="POST" >
       <input type="text" name="username"/>
       <input type="password" name="pass"/>
       <input type="submit" value="登录"/>
       </form>
      </body>
    </html>

User/UserLog.jsp用户登录结果页面

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
    <%@taglib prefix="s" uri="/struts-tags"%>
    <%
    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>用户登录结果页</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">
    	
    
      </head>
      
      <body>
      <s:debug></s:debug>
        登录成功！<br/>
        <s:property value="#session.username"/><br/>
        <a href="<%=request.getContextPath() %>/User/UserCenter.action">进入用户中心</a>
      </body>
    </html>

User/UserCenter.jsp用户中心页面

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
    <%@taglib prefix="s" uri="/struts-tags" %>
    <%
    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>用户中心</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">
    	
    
      </head>
      
      <body>
        这是用户中心<br/>
        用户名:<s:property value="#session.username"/><br/>
        <a href="<%=request.getContextPath()%>/User/UserLogOut.action">注销</a>
      </body>
    </html>

User/UserLogOut.jsp用户注销页面

<%@ 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>注销成功</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">
    	
    
      </head>
      
      <body>
        注销成功欢迎下次回来<br/>
        <a href="<%=request.getContextPath() %>">返回首页</a>
      </body>
    </html>

web.xml

<?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">
      <display-name></display-name>	
      <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
      </welcome-file-list>
      <filter>
      	<filter-name>struts2</filter-name>
      	<filter-class>
      		org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
      	</filter-class>
      </filter>
      <filter-mapping>
      	<filter-name>struts2</filter-name>
      	<url-pattern>/*</url-pattern>
      </filter-mapping></web-app>

转载于:https://my.oschina.net/u/1863614/blog/689554

[2019_Python_]: https://my.oschina.net/u/2663968/blog/3061697
[hot3.png]: /images/20220114/751c55fcf9ce4f3e9f3a242d0a7d9dbd.png