struts2 拦截器权限控制

工程布局：

 

 

直接上代码：

 

LoginAction.java

 

 

package com.aumy.struts.example;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;

public class LoginAction extends ActionSupport {  
        private static final long serialVersionUID = 1030294046920869257L;  
        private String username;  
        private String password;  
      
        // 处理用户请求的execute方法  
        public String execute() throws Exception {  //执行方法
        	
        	System.out.println(username) ;
        	System.out.println(password) ;
        	
            if (isInvalid(getUsername()))  
                return INPUT;  
     
           if (isInvalid(getPassword()))  
               return INPUT;  
     
           if ((getUsername().equals("mm") || getUsername().equals("aumy"))  
                   && getPassword().equals("111")) {  
               // 通过ActionContext对象访问Web应用的Session  
               ActionContext.getContext().getSession().put("user", getUsername());  
               ActionContext.getContext().getSession().put("pass", getPassword());  
               System.out.println(getUsername() + "----" + getPassword());  
               return SUCCESS;  
           } else {  
               System.out.println(getUsername() + "----" + getPassword());  
               return ERROR;  
           }  
       }  


        
        
        
     
       private boolean isInvalid(String value) {  
           return (value == null || value.length() == 0);  
       }  
     
       public String add() {   //执行方法
    	   
    	   System.out.println("我是add方法");
    	   
           return SUCCESS;  
       }  
     
       public String show() {   //执行方法
    	   System.out.println("我是show方法");
           return SUCCESS;  
       }  
     
       public String qurey() {  //执行方法
    	   System.out.println("我是query方法");
           return SUCCESS;  
       }  
     
       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;  
       }  
   } 

 

 

   拦截器

  AuthorityInterceptor.java

 

 

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 AuthorityInterceptor extends AbstractInterceptor {
	private static final long serialVersionUID = 1358600090729208361L;

	// 拦截Action处理的拦截方法
	public String intercept(ActionInvocation invocation) throws Exception {
		
		System.out.println("我是拦截器");
		
		
		// 取得请求相关的ActionContext实例
		ActionContext ctx = invocation.getInvocationContext();
		Map session = ctx.getSession();
		// 取出名为user的session属性
		String user = (String) session.get("user");
		
		// 如果没有登陆，或者登陆所有的用户名不是aumy，都返回重新登陆
		if (user != null || !user.equals("aumy")) {
			return invocation.invoke(); //拦截器通过，去action中去
		}
		// 没有登陆，将服务器提示设置成一个HttpServletRequest属性
		ctx.put("tip", "您还没有登录，请登陆系统");
		return Action.LOGIN; //拦截器没有通过，去查看struts.xml的配置文件去
	}
}

 

 

   struts2.xml

 

    <?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE struts PUBLIC
	"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
	"http://struts.apache.org/dtds/struts-2.3.dtd">

<struts>

	<constant name="struts.enable.DynamicMethodInvocation"
		value="false" />
	<constant name="struts.devMode" value="false" />
	<!--  
		<package name="default" namespace="/" extends="struts-default">
		
		<default-action-ref name="index" />
		
		<global-results>
		<result name="error">/error.jsp</result>
		</global-results>
		
		<global-exception-mappings>
		<exception-mapping exception="java.lang.Exception"
		result="error" />
		</global-exception-mappings>
		
		<action name="index">
		<result type="redirectAction">
		<param name="actionName">HelloWorld</param>
		<param name="namespace">/example</param>
		</result>
		</action>
		</package>
	-->
	<package name="default" namespace="/" extends="struts-default">

		


	<include file="struts-default.xml" />
	<!--不受权限控制的Action请求配置-->
	<package name="non-authority" extends="struts-default">
		<action name="login"
			class="com.aumy.struts.example.LoginAction">
			<result name="input">/login.jsp</result>
			<result name="error">/error.jsp</result>
			<result name="success">/welcome.jsp</result>
		</action>
		
		<action name="qurey" class="com.aumy.struts.example.LoginAction"
			method="qurey">
			<result name="success">/qurey.jsp</result>
		</action>
	</package>

	<!--受权限控制的Action请求配置-->
	<package name="authority" extends="struts-default">
	
		<interceptors>
			<!--定义一个名为authority的拦截器-->
			<interceptor
				class="com.aumy.struts.example.intercepter.AuthorityInterceptor"
				name="authority" />
			<!--定义一个包含权限检查的拦截器栈-->
			<interceptor-stack name="mydefault">
				<!--配置内建默认拦截器-->
				<interceptor-ref name="defaultStack" />
				<!--配置自定义的拦截器-->
				<interceptor-ref name="authority" />
			</interceptor-stack>
		</interceptors>

		<default-interceptor-ref name="mydefault" />
		<!--定义全局Result-->
		<global-results>
			<result name="login">/login.jsp</result>
		</global-results>

		<action name="show" class="com.aumy.struts.example.LoginAction"
			method="show">
			<result name="success">/show.jsp</result>
		</action>

		<action name="add" class="com.aumy.struts.example.LoginAction"
			method="add">
			<result name="success">/add.jsp</result>
		</action>

	</package>


	<!-- Add packages here
		<include file="example.xml"/>
	-->

</struts>

 

 

   jsp页面了

 

  add.jsp

 

  <%@ page language="java" contentType="text/html; charset=GBK"%>  

    <%@taglib prefix="s" uri="/struts-tags"%>  
    <html>  
        <head>  
            <title><s:text name="addPage"/></title>  
        </head>  
        <body>  
            <s:text name="addTip"/>  
            <p />  
           <s:a href="login.jsp">return login</s:a>  
       </body>  
   </html> 

 

 

 

   error.jsp

 

   <%@ page language="java" contentType="text/html; charset=GBK"%>  

    <%@taglib prefix="s" uri="/struts-tags"%>  
    <html>  
        <head>  
            <title><s:text name="errorPage" /></title>  
        </head>  
        <body>  
            <s:text name="failTip" />  
            <p />  
           <s:a href="login.jsp">return</s:a>  
       </body>  
   </html> 

 

 

   login.jsp

 

   <%@ page language="java" contentType="text/html; charset=GBK"%>

<%@taglib prefix="s" uri="/struts-tags"%>
<html>
	<head>
		<title><s:text name="loginPage" />
		</title>
	</head>
	<body>

		
		<form action="login.action" method="post">
		
		用户名：<input type="text" name="username"/> <br/>
		密码：  <input type="text" name="password"/> <br/>
		<input type="submit" value="提交" />
		</form>
		
		
		
		
		
	</body>
</html>

 

 query.jsp

 

  <%@ page language="java" contentType="text/html; charset=GBK"%>  

    <%@taglib prefix="s" uri="/struts-tags"%>  
    <html>  
        <head>  
            <title><s:text name="qureyPage"/></title>  
        </head>  
        <body>  
            <s:text name="qureyTip"/>  
            <p />  
           <s:a href="login.jsp">return login</s:a>  
       </body>  
   </html> 

 

 

show.jsp

 

<%@ page language="java" contentType="text/html; charset=GBK"%>  
    <%@taglib prefix="s" uri="/struts-tags"%>  
    <html>  
        <head>  
            <title><s:text name="showPage"/></title>  
        </head>  
        <body>  
            <s:text name="showTip"/>  
            <p />  
           <s:a href="login.jsp">return login</s:a>  
       </body>  
   </html> 

 

success.jsp

 

 <%@ 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 JSP page. <br>
  </body>
</html>

 

welcome.jsp

 

 <%@ page language="java" contentType="text/html; charset=GBK"%>  

    <%@taglib prefix="s" uri="/struts-tags"%>  
    <html>  
        <head>  
            <title><s:text name="succPage" /></title>  
            <s:head />  
        </head>  
        <body>  
            <s:text name="succTip" />  
           <br />  
           <!-- 欢迎，${sessionScope.user},您已经登录!  
           ${sessionScope.pass}-->  
           <p />  
           <s:a href="show.action">show</s:a>  
           <p />  
           <s:a href="add.action">add</s:a>  
           <p />  
           <s:a href="qurey.action">qurey</s:a>  
       </body>  
   </html> 

 

 

 

 

   login.jsp开始操作-----输入的时候密码是111，用户名是mm，或者aumy，自己看。

 

 ---------------------------------------------------------------------------------------------------------------------------------一点想法：

 

  1.拦截器自定义的时候，要用到默认的主拦截器，别忘记了。

 

  2.拦截器一般在进入action之前进行拦截的（执行完action然后再执行拦截器应该也有的吧？？？）

 

  3.拦截器有全局的拦截器，或者一个action的配置拦截器，应该是先去找自己的cation的拦截器，然后

    如果找不到，再去找全局的拦截器。我们的举例是用到全局的拦截器。