47 lines
4.1 KiB
XML
47 lines
4.1 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!-- ============================================================================= -->
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<!-- Copyright © 2009 Red Hat, Inc. and others. -->
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<!-- -->
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<!-- The text of and illustrations in this document are licensed by Red Hat under -->
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<!-- a Creative Commons Attribution–Share Alike 3.0 Unported license ("CC-BY-SA"). -->
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<!-- -->
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<!-- An explanation of CC-BY-SA is available at -->
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<!-- -->
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<!-- http://creativecommons.org/licenses/by-sa/3.0/. -->
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<!-- -->
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<!-- In accordance with CC-BY-SA, if you distribute this document or an adaptation -->
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<!-- of it, you must provide the URL for the original version. -->
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<!-- -->
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<!-- Red Hat, as the licensor of this document, waives the right to enforce, -->
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<!-- and agrees not to assert, Section 4d of CC-BY-SA to the fullest extent -->
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<!-- permitted by applicable law. -->
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<!-- ============================================================================= -->
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<chapter id="logging">
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<title>日志（Logging）</title>
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<para>ActiveMQ有自己的独立的日志系统，不依赖于任何其它的日志框架。在默认情况下所有ActiveMQ的日志将输入到
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标准的<ulink
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url="http://java.sun.com/j2se/1.4.2/docs/guide/util/logging/">JDK日志系统</ulink>，
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（即JUL－Java Util Logging）。服务器在默认条件下读取config目录下的
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<literal>logging.properties</literal>文件做为JUL的配置文件。它配置了使用ActiveMQ自己的格式化
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方法，将日志输出到屏幕终端（Console）及文件中。请访问Sun公司的相关网址来进一步了解如何配置使用JUL。</para>
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<para>你可以通过编程或定义系统变量的方法来配置不同的日志代理（Logging Delegate）。</para>
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<para>采用编程方法，只需要调用方法：
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<programlisting>org.apache.activemq.core.logging.Logger.setDelegateFactory(new Log4jLogDelegateFactory())</programlisting></para>
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<para>其中<literal>Log4jLogDelegateFactory</literal>实现了<literal
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>org.apache.activemq.spi.core.logging.LogDelegateFactory </literal>接口。</para>
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<para>如果要使用系统变量方法，则需要设置变量<literal
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>org.apache.activemq.logger-delegate-factory-class-name</literal>为相应的代理工厂，即
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<programlisting>-Dorg.apache.activemq.logger-delegate-factory-class-name=org.apache.activemq.integration.logging.Log4jLogDelegateFactory</programlisting></para>
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<para>上面的例子可以看出ActiveMQ提供了一些代理工厂以方便用户使用，它们是：<orderedlist
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><listitem><para>org.apache.activemq.core.logging.impl.JULLogDelegateFactory - 默认的JUL日志代理工厂。</para>
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</listitem><listitem><para>org.apache.activemq.integration.logging.Log4jLogDelegateFactory
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- Log4J的日志代理工厂。</para></listitem></orderedlist></para>
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<para>如果在客户端使用JUL代理，注意要提供<literal>logging.properties</literal>文件，并且在客户端启动之前设置<literal
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>java.util.logging.config.file</literal>属性。</para>
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<section>
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<title>与JBoss应用服务器日志的关系</title>
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<para>当ActiveMQ部署到JBoss应用服务器版本5.x或以上时，虽然ActiveMQ仍然使用JUL，但是所有的日志输出被重定向到
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JBoss logger。请参阅相关的JBoss文档来了解更多的信息。如果是以前版本的JBoss，则必需指定你所需要的日志代理。</para>
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</section>
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</chapter>
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