﻿<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/"><channel><title>BlogJava-傻子一个-随笔分类-Log</title><link>http://www.blogjava.net/lifw/category/40174.html</link><description>一路走来~~</description><language>zh-cn</language><lastBuildDate>Wed, 10 Jun 2009 02:31:46 GMT</lastBuildDate><pubDate>Wed, 10 Jun 2009 02:31:46 GMT</pubDate><ttl>60</ttl><item><title>log4j的潜规则</title><link>http://www.blogjava.net/lifw/archive/2009/06/03/279805.html</link><dc:creator>老文</dc:creator><author>老文</author><pubDate>Wed, 03 Jun 2009 06:19:00 GMT</pubDate><guid>http://www.blogjava.net/lifw/archive/2009/06/03/279805.html</guid><wfw:comment>http://www.blogjava.net/lifw/comments/279805.html</wfw:comment><comments>http://www.blogjava.net/lifw/archive/2009/06/03/279805.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.blogjava.net/lifw/comments/commentRss/279805.html</wfw:commentRss><trackback:ping>http://www.blogjava.net/lifw/services/trackbacks/279805.html</trackback:ping><description><![CDATA[摘自：http://www.javaeye.com/topic/152349<br />
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项目中使用log4j进行日志输出，用log4j.properties进行了配置，发布到tomcat后，
在控制台及log文件中均没有看到输出，找了半天资料没发现原因。
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慢慢调试发现，使用了一个叫jxl的jar包，里面有一个log4j.xml，所有日志都输出到jxl.log的文件中去了，马上创建了一个log4j.xml，放到WEB-INF/classes目录下，正常的看到了log输出。
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原来log4j也有潜规则：
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<span style="font-size: medium;"><span style="color: red;">如果在classpath中发现了log4j.xml配置文件，log4j将不再尝试加载log4j.properties配置。</span></span>
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<img src ="http://www.blogjava.net/lifw/aggbug/279805.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.blogjava.net/lifw/" target="_blank">老文</a> 2009-06-03 14:19 <a href="http://www.blogjava.net/lifw/archive/2009/06/03/279805.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item></channel></rss>