Spring+Log4j+ActiveMQ实现远程记录日志(3)

package com.demo.product;
 
import org.apache.log4j.Logger;
 
public class Main{
    private static final Logger logger = Logger.getLogger(Main.class);
    public static void main(String[] args) throws Exception {
        // just log a message
        logger.info("Info Log.");
        logger.warn("Warn Log");
        logger.error("Error Log.");
        System.exit(0);
    }
}

这个Main类和普通的logger调用一样，仅仅负责打印日志。有没有觉得太简单了呢？
 
Logging项目

来看看项目结构图：

为了让监听器一直活着，我把Logging写成了一个Web项目，跑在Tomcat上。index.jsp就是个Hello World字符串而已，用来验证Logging活着。注意，在Logging项目中，已没有Product项目中的log4j.properties和jndi.properties两个文件。

来看看另外几个文件：

pom.xml（每个包的目的都写在注释里了）：

<!-- Use to cast object to LogEvent when received a log -->
<dependency>
    <groupId>log4j</groupId>
    <artifactId>log4j</artifactId>
    <version>1.2.17</version>
</dependency>
 
<!-- Use to receive jms message -->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-jms</artifactId>
    <version>4.0.0.RELEASE</version>
</dependency>
 
<!-- Use to load spring.xml -->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-web</artifactId>
    <version>4.0.0.RELEASE</version>
</dependency>
 
<!-- ActiveMQ lib -->
<dependency>
    <groupId>org.apache.activemq</groupId>
    <artifactId>activemq-core</artifactId>
    <version>5.7.0</version>
</dependency>

web.xml

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >
 
<web-app>
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring.xml</param-value>
    </context-param>
   
    <!-- Use to load spring.xml -->
    <listener>
        <listener-class>
            org.springframework.web.context.ContextLoaderListener
        </listener-class>
    </listener>
   
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
</web-app>

spring.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="
       
        ">
 
    <bean>
        <property ref="connectionFactory"/>
    </bean>
    <bean>
        <property ref="targetConnectionFactory"/>
    </bean>
    <bean>
        <property value="tcp://localhost:61616"/>
    </bean>
<!-- As JMSAppender only support the topic way to send messages,
    thus queueDestination here is useless.
    <bean>
        <constructor-arg value="queue" />
    </bean>
 -->
    <bean>
        <constructor-arg value="logTopic" />
    </bean>
    <bean>
        <property ref="connectionFactory" />
        <!-- <property ref="queueDestination" />  -->
        <property ref="topicDestination" />
        <property ref="logMessageListener" />
    </bean>
    <bean/>
</beans>