• 吴裕雄--天生自然轻量级JAVA EE企业应用开发Struts2Sping4Hibernate整合开发学习笔记:struts2拦截结果的监听器


    <?xml version="1.0" encoding="GBK"?>
    <project name="struts" basedir="." default="">
        <property name="dist" value="classes"/>
        <property name="src" value="src"/>
        
        <path id="classpath">
            <fileset dir="lib">
                <include name="*.jar"/>
            </fileset>
            <pathelement path="${dist}"/>
        </path>
    
        <target name="compile" description="Compile all source code">
            <delete dir="${dist}"/>
            <mkdir dir="${dist}"/>
            <copy todir="${dist}">
                <fileset dir="${src}">
                    <exclude name="**/*.java"/>
                </fileset>        
            </copy>
            <javac destdir="classes" debug="true" includeantruntime="yes"
                deprecation="false" optimize="false" failonerror="true">
                <src path="${src}"/>
                <classpath refid="classpath"/>
            </javac>
        </target>
    
    </project>
    <?xml version="1.0" encoding="GBK"?>
    
    <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
        http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1">
        <!-- 定义Struts 2的核心Filter -->
        <filter>
            <filter-name>struts2</filter-name>
            <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
        </filter>
        <!-- 让Struts 2的核心Filter拦截所有请求 -->
        <filter-mapping>
            <filter-name>struts2</filter-name>
            <url-pattern>/*</url-pattern>
        </filter-mapping>
    </web-app>
    <%--
    网站: <a href="http://www.crazyit.org">疯狂Java联盟</a>
    author  yeeku.H.lee kongyeeku@163.com
    version  1.0
    Copyright (C), 2001-2016, yeeku.H.Lee
    This program is protected by copyright laws.
    Program Name:
    Date: 
    --%>
    
    <%@ page contentType="text/html; charset=GBK" language="java" errorPage="" %>
    <%@ taglib prefix="s" uri="/struts-tags"%>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <title>错误页面</title>
    </head>
    <body>
        您不能登录!
    </body>
    </html>
    <%--
    网站: <a href="http://www.crazyit.org">疯狂Java联盟</a>
    author  yeeku.H.lee kongyeeku@163.com
    version  1.0
    Copyright (C), 2001-2016, yeeku.H.Lee
    This program is protected by copyright laws.
    Program Name:
    Date: 
    --%>
    
    <%@ page contentType="text/html; charset=GBK" language="java" errorPage="" %>
    <%@ taglib prefix="s" uri="/struts-tags"%>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <title>登录页面</title>
    </head>
    <body>
    <h3>用户登录</h3>
    <s:form action="login">
        <s:textfield name="username" label="用户名"/>
        <s:password name="password" label="密码"/>
        <s:submit value="登录"/>
    </s:form>
    </body>
    </html>
    <%--
    网站: <a href="http://www.crazyit.org">疯狂Java联盟</a>
    author  yeeku.H.lee kongyeeku@163.com
    version  1.0
    Copyright (C), 2001-2016, yeeku.H.Lee
    This program is protected by copyright laws.
    Program Name:
    Date: 
    --%>
    
    <%@ page contentType="text/html; charset=GBK" language="java" errorPage="" %>
    <%@ taglib prefix="s" uri="/struts-tags"%>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <title>成功页面</title>
    </head>
    <body>
        您已经登录!
    </body>
    </html>
    <?xml version="1.0" encoding="GBK"?>
    <!DOCTYPE struts PUBLIC
        "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
        "http://struts.apache.org/dtds/struts-2.3.dtd">
    <struts>
        <!-- 通过常量配置该应用所使用的字符集-->
        <constant name="struts.i18n.encoding" value="GBK"/>
        <!-- 配置本系统所使用的包 -->
        <package name="lee" extends="struts-default">
            <!-- 应用所需使用的拦截器都在该元素下配置 -->
            <interceptors>
                <!-- 配置mySimple拦截器 -->
                <interceptor name="mySimple"
                class="org.crazyit.app.interceptor.BeforeResultInterceptor">
                    <!-- 为拦截器指定参数值 -->
                    <param name="name">简单拦截器</param>
                </interceptor>
            </interceptors>
    
            <action name="login" class="org.crazyit.app.action.LoginAction">
                <result name="error">/WEB-INF/content/error.jsp</result>
                <result>/WEB-INF/content/welcome.jsp</result> 
                <!-- 配置系统的默认拦截器 -->
                <interceptor-ref name="defaultStack"/>
                <!-- 应用自定义的mySimple拦截器 -->
                <interceptor-ref name="mySimple">
                    <param name="name">改名后的拦截器</param>
                </interceptor-ref>
            </action>
            <action name="*">
                <result>/WEB-INF/content/{1}.jsp</result>
            </action>
        </package>
    </struts>
    package org.crazyit.app.action;
    
    import com.opensymphony.xwork2.ActionSupport;
    
    /**
     * Description:
     * <br/>网站: <a href="http://www.crazyit.org">疯狂Java联盟</a>
     * <br/>Copyright (C), 2001-2016, Yeeku.H.Lee
     * <br/>This program is protected by copyright laws.
     * <br/>Program Name:
     * <br/>Date:
     * @author  Yeeku.H.Lee kongyeeku@163.com
     * @version  1.0
     */
    public class LoginAction
        extends ActionSupport
    {
        private String username;
        private String password;
        // username的setter和getter方法
        public void setUsername(String username)
        {
            this.username = username;
        }
        public String getUsername()
        {
            return username;
        }
        // password的setter和getter方法
        public void setPassword(String password)
        {
            this.password = password;
        }
        public String getPassword()
        {
            return password;
        }
    
        public String execute() throws Exception
        {
            System.out.println("进入execute方法执行体..........");
            Thread.sleep(1500);
            if (getUsername().equals("crazyit.org")
                && getPassword().equals("leegang") )
            {
                return SUCCESS;
            }
            return ERROR;
        }
    }
    package org.crazyit.app.interceptor;
    
    import com.opensymphony.xwork2.ActionInvocation;
    import com.opensymphony.xwork2.interceptor.AbstractInterceptor;
    import java.util.*;
    
    import org.crazyit.app.action.*;
    /**
     * Description:
     * <br/>网站: <a href="http://www.crazyit.org">疯狂Java联盟</a>
     * <br/>Copyright (C), 2001-2016, Yeeku.H.Lee
     * <br/>This program is protected by copyright laws.
     * <br/>Program Name:
     * <br/>Date:
     * @author  Yeeku.H.Lee kongyeeku@163.com
     * @version  1.0
     */
    public class BeforeResultInterceptor
        extends AbstractInterceptor
    {
        public String intercept(ActionInvocation invocation)
            throws Exception
        {
            // 将一个拦截结果的监听器注册给该拦截器
            invocation.addPreResultListener(new MyPreResultListener());
            System.out.println("execute方法执行之前的拦截...");
            // 调用下一个拦截器,或者Action的被拦截方法
            String result = invocation.invoke();
            System.out.println("execute方法执行之后的拦截...");
            return result;
        }
    }
    package org.crazyit.app.interceptor;
    
    import com.opensymphony.xwork2.interceptor.*;
    import com.opensymphony.xwork2.ActionInvocation;
    
    /**
     * Description:
     * <br/>网站: <a href="http://www.crazyit.org">疯狂Java联盟</a>
     * <br/>Copyright (C), 2001-2016, Yeeku.H.Lee
     * <br/>This program is protected by copyright laws.
     * <br/>Program Name:
     * <br/>Date:
     * @author  Yeeku.H.Lee kongyeeku@163.com
     * @version  1.0
     */
    public class MyPreResultListener
        implements PreResultListener
    {
        // 定义在处理Result之前的行为
        public void beforeResult(ActionInvocation invocation
            ,String resultCode)
        {
            // 打印出执行结果
            System.out.println("返回的逻辑视图为:" + resultCode);
    //        try
    //        {
    //            invocation.invoke();
    //        }
    //        catch (Exception ex)
    //        {
    //            ex.printStackTrace();
    //        }
    //        finally
    //        {
    //        }
        }
    }
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  • 原文地址:https://www.cnblogs.com/tszr/p/12366877.html
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