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拦截器的执行顺序

<?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.SimpleInterceptor">
                <!-- 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">第一个</param>
            </interceptor-ref>
            <interceptor-ref name="mySimple">
                <param name="name">第二个</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 SimpleInterceptor
    extends AbstractInterceptor
{
    // 简单拦截器的名字
    private String name;
    // 为该简单拦截器设置名字的setter方法
    public void setName(String name)
    {
        this.name = name;
    }
    public String intercept(ActionInvocation invocation)
        throws Exception
    {
        // 取得被拦截的Action实例
        LoginAction action = (LoginAction)invocation.getAction();
        // 打印执行开始的时间
        System.out.println(name + " 拦截器的动作---------" +
            "开始执行登录Action的时间为：" + new Date());
        // 取得开始执行Action的时间
        long start = System.currentTimeMillis();
        // 执行该拦截器的后一个拦截器
        // 如果该拦截器后没有其他拦截器，则直接执行Action的被拦截方法
        String result = invocation.invoke();
        // 打印执行结束的时间
        System.out.println(name + " 拦截器的动作---------" +
            "执行完登录Action的时间为：" + new Date());
        long end = System.currentTimeMillis();
        System.out.println(name + " 拦截器的动作---------" +
            "执行完该Action的时间为" + (end - start) + "毫秒");
        return result;
    }
}

来源：https://www.cnblogs.com/tszr/p/12366869.html

标签

struts

string

轻量级

lee