struts2拦截器
关于struts 全局拦截器的配置
1.首先写好action 用户从页面获取相应的数据
UserAction代码
package com.yihaodian.action;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
public class UserAction extends ActionSupport {
private static final long serialVersionUID = 1L;
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;
}
public String execute(){
return SUCCESS;
}
public String listAllUser(){
//将页面上的数据存放到session中
ActionContext.getContext().getSession().put("userName", userName);
return SUCCESS;
}
}
2.struts.xml配置
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<constant name="struts.devMode" value="true"></constant>
<package name="struts" extends="struts-default" namespace="/">
<interceptors>
<!-- 定义权限控制的拦截器 -->
<interceptor name="authrity"
class="com.yihaodian.authorzation.AuthorizationInterceptor">
</interceptor>
<!-- 定义一个包含权限控制的拦截器栈 -->
<interceptor-stack name="mydefault">
<interceptor-ref name="defaultStack"></interceptor-ref>
<interceptor-ref name="authrity"></interceptor-ref>
</interceptor-stack>
</interceptors>
<!-- 定义默认的拦截器 则对该包下所有的action都有拦截作用-->
<default-action-ref name="mydefault"></default-action-ref>
<!-- 定义全局处理结果 -->
<global-results>
<!-- 逻辑名为login的结果，映射到/login.jsp页面 -->
<result name="login">/login.jsp</result>
</global-results>
<action name="listall" class="com.yihaodian.action.UserAction" method="listAllUser">
<result name="success">/listall.jsp</result>
</action>
</package>
<!-- 重新定义的package中的action 对上一个包中的默认拦截器不起作用 -->
<package name="font" extends="struts-default">
<action name="user0pt" class="com.yihaodian.action.UserAction">
<result name="success">/success.jsp</result>
</action>
</package>
</struts>
3.拦截器实现类
package com.yihaodian.authorzation;
import java.util.Map;
import com.opensymphony.xwork2.Action;
import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.interceptor.AbstractInterceptor;
public class AuthorizationInterceptor extends AbstractInterceptor {
private static final long serialVersionUID = 1L;
@Override
public String intercept(ActionInvocation invocation) throws Exception {
Map session = invocation.getInvocationContext().getSession();
String userName = (String)session.get("userName");
if(userName!=null&& userName.equals("test")){
return invocation.invoke();
}else{
return Action.LOGIN;
}
}
}
4.jsp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>登陆页面</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>
<form action="listall">
<table align="center">
<tr>
<td>用户名</td><td><input type="text" name="userName"/></td>
</tr>
<tr>
<td>密码</td><td><input type="password" name="password"/></td>
</tr>
<tr>
<td colspan="2" align="center"><input type="submit" value="登陆"/><input type="reset" value="重置"/></td>
</tr>
</table>
</form>
</body>
</html>
<%@ 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>SUCCESS</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> SUCCESS </body> </html>