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struts2自定义拦截器

2024-09-18 01:27:13   217人阅读

1、index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="GB18030"%>
<%
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">
    <!--
    <link rel="stylesheet" type="text/css" href="http://www.mamicode.com/styles.css">
    -->
  </head>
  
  <body>
    <a href="login.jsp">login.jsp</a>
  </body>
</html>

2、login.jsp

<%@ page language="java" import="java.util.*" pageEncoding="gbk"%>
<%@ taglib prefix="struts" 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>My JSP ‘login.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="http://www.mamicode.com/styles.css">
    -->

  </head>
  
  <body>
        <struts:form action="authentication" method="post">
              <struts:label value="登录系统"></struts:label>
              <struts:textfield name="account" label="帐号"></struts:textfield>
              <struts:password name="password" label="密码"></struts:password>
              <struts:submit value="登录"></struts:submit>
          </struts:form>
  </body>
</html>

 

3、

<%@ page language="java" contentType="text/html; charset=UTF-8"%>
<%@ taglib uri="/struts-tags" prefix="struts"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<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">
<!--
    <link rel="stylesheet" type="text/css" href="http://www.mamicode.com/styles.css">
    -->
<struts:head theme="ajax" />
<style type="text/css">
body,td {
    font-size: 12px;
}
</style>
</head>

<body>

    <struts:property value="message" />

</body>
</html>

 

4、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="main" extends="struts-default">
        <!-- 自定义一个拦截器 -->
        <interceptors>
            <interceptor name="authentication"
                class="com.ouyang.struts2.interceptor.AuthenticationInterceptor">
            </interceptor>
        </interceptors>
        
        <global-results>
            <result name="login">/login.jsp</result>
        </global-results>
        
        <action name="authentication"
            class="com.ouyang.struts2.action.AuthenticationAction">
            <interceptor-ref name="authentication"></interceptor-ref>
            <result>/authenticationSuccess.jsp</result>
        </action>
        
    </package>
</struts>

 

5、web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
  <display-name>customizedInterceptor</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.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>

 

6、AuthenticationAction.java

package com.ouyang.struts2.action;

import com.opensymphony.xwork2.ActionSupport;

public class AuthenticationAction extends ActionSupport {

    private static final long serialVersionUID = -6161973490186833069L;

    private String message;

    public String execute() {

        message = "您正在访问 AuthenticationAction. ";

        return SUCCESS;
    }

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }

}

 

7、AuthenticationInterceptor.java

package com.ouyang.struts2.interceptor;

import java.util.Map;

import com.opensymphony.xwork2.Action;
import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.interceptor.AbstractInterceptor;

public class AuthenticationInterceptor extends AbstractInterceptor {

    private static final long serialVersionUID = -4433771430728214868L;

    @Override
    @SuppressWarnings("all")
    public String intercept(ActionInvocation invocation) throws Exception {

        Map<String, Object> sessionValues = invocation.getInvocationContext()
                .getSession();

        String account = (String) sessionValues.get("account");
        
        if(account!=null){
            System.out.println(account);
        }
        if (account == null) {
            System.out.println("您输入的用户名为空！");
            return Action.LOGIN;
        } else {
            return invocation.invoke();
        }
    }
}

8、文件列表

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struts2自定义拦截器


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