使用拦截器进行权限控制

来源：互联网发布：coreldraw软件图标编辑：程序博客网时间：2024/05/29 03:04

代码：

<%@ page language="java" import="java.util.*" pageEncoding="gbk"%><%@ taglib prefix="s" uri="/struts-tags"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><title>struts2 拦截器应用</title></head><body><h1>用户登录</h1><font color="red">${requestScope.tip}</font><s:form id="id" action="login">  <s:textfield name="name" label="用户名"></s:textfield>  <s:password name="pass" label="密码"></s:password>  <s:submit value="注册"></s:submit></s:form> <a href=chakan.action>看咪咪^_^</a></body></html>

loginsuccess.jsp

<%@ page language="java" import="java.util.*" pageEncoding="gbk"%><%@ taglib prefix="s" uri="/struts-tags"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><title>拦截器权限控制</title></head><body>你已成功登录系统！<a href=chakan.action>看咪咪^_^</a></body></html>

info.jsp

<%@ page language="java" import="java.util.*" pageEncoding="gbk"%><%@ taglib prefix="s" uri="/struts-tags"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>这是一个伟大的咪咪</title></head><body>              一个人把自己看得太高，就会被别人看低；<br/>一个人把自己看得低一点，就会被别人看高和尊重。<br/>故意抬高自己是一种心虚，故意贬低自己也会矫揉造作。<br/>平和的神情、真诚的态度和不在意别人眼中是否贵贱的肚量，是祥和生活的保证。<br/>-俞敏洪</body></html>

UserAction.java

package com.action;import com.opensymphony.xwork2.ActionContext;import com.opensymphony.xwork2.ActionSupport;import java.util.Map;public class UserAction extends ActionSupport {  private static final long serialVersionUID = 1L;  private String name;  private String pass;public String getName() {return name;}public void setName(String name) {this.name = name;}public String getPass() {return pass;}public void setPass(String pass) {this.pass = pass;}@Override@SuppressWarnings("unchecked")public String execute() throws Exception {// TODO Auto-generated method stubActionContext actionContext=ActionContext.getContext();if(getName().equals("haige") && getPass().equals("haige")){Map sessionMap = actionContext.getSession();sessionMap.put("name", getName());return SUCCESS;}else{actionContext.put("tip", "用户名或密码不对！");return ERROR;}}}

CheckInterceptor.java(权限控制的拦截器)

package com.inter;import java.util.Map;import com.opensymphony.xwork2.Action;import com.opensymphony.xwork2.ActionContext;import com.opensymphony.xwork2.ActionInvocation;import com.opensymphony.xwork2.interceptor.AbstractInterceptor;public class CheckInterceptor extends AbstractInterceptor {private static final long serialVersionUID = 1L;public String intercept(ActionInvocation arg0) throws Exception {ActionContext actionContext=arg0.getInvocationContext();        Map<?, ?> sessionMap = actionContext.getSession();String user = (String)sessionMap.get("name");if(user != null && user.equals("haige")){return arg0.invoke();}actionContext.put("tip","请先登录！");return Action.LOGIN;}}

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="intercertor" extends="struts-default">     <interceptors>         <interceptor name="loginInterceptor" class="com.inter.CheckInterceptor"></interceptor>     </interceptors>          <action name="login" class="com.action.UserAction">        <result name="error">/login.jsp</result><result name="success">/loginsuccess.jsp</result>     </action>          <action name="chakan">         <result>/info.jsp</result> <result name="login">/login.jsp</result> <interceptor-ref name="defaultStack"></interceptor-ref> <interceptor-ref name="loginInterceptor"></interceptor-ref>     </action>  </package></struts>

截图：

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