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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：配置Struts2的异常处理

分类: IT文章 • 2022-08-31 22:28:00 
<?xml version="1.0" encoding="GBK"?>
<project name="struts" basedir="." default="">
    <property name="dist" value="classes"/>
    <property name="src" value="src"/>
    
    <path >
        <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 ref/>
        </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>
<?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>
    <package name="lee" extends="struts-default">
        <!-- 定义全局结果映射 -->
        <global-results>
            <!-- 定义当sql、root两个逻辑异常都对应exception.jsp页 -->
            <result name="sql">/WEB-INF/content/exception.jsp</result>
            <result name="root">/WEB-INF/content/exception.jsp</result>
        </global-results>

        <!-- 定义全局异常映射 -->
        <global-exception-mappings>
            <!-- 当Action中遇到SQLException异常时，
                系统将转入name为sql的结果中-->
            <exception-mapping exception="java.sql.SQLException" result="sql"/>
            <!-- 当Action中遇到Exception异常时，
                系统将转入name为root的结果中-->
            <exception-mapping exception="java.lang.Exception" result="root"/>
        </global-exception-mappings>

        <action name="login" class="org.crazyit.app.action.LoginAction">
            <!-- 定义局部异常映射， 当Action中遇到MyException异常时，
                系统将转入name为my的结果中-->
            <exception-mapping exception="org.crazyit.app.exception.MyException"
                result="my"/>
            <!-- 定义三个结果映射 -->
            <result name="my">/WEB-INF/content/exception.jsp</result>
            <result name="error">/WEB-INF/content/error.jsp</result>
            <result>/WEB-INF/content/welcome.jsp</result>
        </action>
        <action name="*">
            <result>/WEB-INF/content/{1}.jsp</result>
        </action>
    </package>
</struts>
<%--
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>异常处理页面</title>
</head>
<body>
    异常信息：<s:property value="exception.message"/>
</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>
<form action="login.action" method="post">
<table align="center">
    <caption><h3>用户登录</h3></caption>
    <tr>
        <td>用户名：<input type="text" name="username"/></td>
    </tr>
    <tr>
        <td>密&nbsp;&nbsp;码：<input type="text" name="password"/></td>
    </tr>
    <tr align="center">
        <td><input type="submit" value="登录"/><input type="reset" value="重填" /></td>
    </tr>
</table>
</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>
    <s:property value="username"/>,您已经登录!<br/>
    <s:actionmessage/>
</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>
    <package name="lee" extends="struts-default">
        <!-- 定义全局结果映射 -->
        <global-results>
            <!-- 定义当sql、root两个逻辑异常都对应exception.jsp页 -->
            <result name="sql">/WEB-INF/content/exception.jsp</result>
            <result name="root">/WEB-INF/content/exception.jsp</result>
        </global-results>

        <!-- 定义全局异常映射 -->
        <global-exception-mappings>
            <!-- 当Action中遇到SQLException异常时，
                系统将转入name为sql的结果中-->
            <exception-mapping exception="java.sql.SQLException" result="sql"/>
            <!-- 当Action中遇到Exception异常时，
                系统将转入name为root的结果中-->
            <exception-mapping exception="java.lang.Exception" result="root"/>
        </global-exception-mappings>

        <action name="login" class="org.crazyit.app.action.LoginAction">
            <!-- 定义局部异常映射， 当Action中遇到MyException异常时，
                系统将转入name为my的结果中-->
            <exception-mapping exception="org.crazyit.app.exception.MyException"
                result="my"/>
            <!-- 定义三个结果映射 -->
            <result name="my">/WEB-INF/content/exception.jsp</result>
            <result name="error">/WEB-INF/content/error.jsp</result>
            <result>/WEB-INF/content/welcome.jsp</result>
        </action>
        <action name="*">
            <result>/WEB-INF/content/{1}.jsp</result>
        </action>
    </package>
</struts>
package org.crazyit.app.action;

import com.opensymphony.xwork2.ActionSupport;

import org.crazyit.app.exception.*;

/**
 * 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
{
    // 封装请求参数的username和password成员变量
    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 this.username;
    }

    // password的setter和getter方法
    public void setPassword(String password)
    {
        this.password = password;
    }
    public String getPassword()
    {
        return this.password;
    }

    public String execute() throws Exception
    {
        if (getUsername().equalsIgnoreCase("user"))
        {
            throw new MyException("自定义异常");
        }
        if (getUsername().equalsIgnoreCase("sql"))
        {
            throw new java.sql.SQLException("用户名不能为SQL");
        }
        if (getUsername().equals("crazyit.org")
            && getPassword().equals("leegang") )
        {
            addActionMessage("哈哈，服务器提示！");
            return SUCCESS;
        }
        return ERROR;
    }
}
package org.crazyit.app.exception;

/**
 * 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 MyException extends Exception
{
    public MyException()
    {
    }
    public MyException(String msg)
    {
        super(msg);
    }
}

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