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使用log4j的时候如何输出printStackTrace()的堆栈信息 
研究了一下发现很简单,如下: 
log.error(e.getMessage(),e); 
输出信息如下: 
2009-05-11 12:40:45  [ Thread-1:2231687 ] - [ ERROR ]  Connection reset by peer: socket write error 
java.net.SocketException: Connection reset by peer: socket write error 
at java.net.SocketOutputStream.socketWrite0(Native Method) 
at java.net.SocketOutputStream.socketWrite(Unknown Source) 
at java.net.SocketOutputStream.write(Unknown Source) 
at java.io.DataOutputStream.write(Unknown Source) 
at java.io.FilterOutputStream.write(Unknown Source) 
at com.mythlink.facebook.server.Server.run(Server.java:110) 
at java.lang.Thread.run(Unknown Source) 
其中Connection reset by peer: socket write error 是e.getMessage();所得到的 
使用log4j的时候如何输出printStackTrace()的堆栈信息
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原文地址:http://www.cnblogs.com/handsome1013/p/4871837.html