Log4J:解析log4j.xml中的错误

时间:2014-07-31 00:51:37

标签: java spring log4j

我开始在我的项目中使用log4j,现在我有了这个配置文件:

<?xml version="1.0" encoding="UTF-8"?>
<log4j:configuration debug="true" xmlns:log4j="http://jakarta.apache.org/log4j/">
  <appenders>
    <console name="Console" target="SYSTEM_OUT">
      <patternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n"/>
    </console>
  </appenders>
  <loggers>
    <root level="error">
      <appenderRef ref="Console"/>
    </root>
  </loggers>
</log4j:configuration>

但是当我部署应用程序时,我收到此错误:

log4j:WARN Continuable parsing error 2 and column 82
log4j:WARN O elemento-raiz do documento "log4j:configuration" deve corresponder à raiz de DOCTYPE "null".
log4j:WARN Continuable parsing error 2 and column 82
log4j:WARN O documento é inválido: nenhuma gramática encontrada.
log4j:WARN Unrecognized element appenders
log4j:WARN Unrecognized element loggers

同时显示这两条消息:

log4j: reset attribute= "".
log4j: Threshold ="".

任何人都知道这种配置有什么问题?

2 个答案:

答案 0 :(得分:0)

删除

xmlns:log4j="http://jakarta.apache.org/log4j/"

并删除配置标记上的log4j前缀

<?xml version="1.0" encoding="UTF-8"?>
<configuration debug="true">
  <appenders>
    <console name="Console" target="SYSTEM_OUT">
      <patternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n"/>
    </console>
  </appenders>
  <loggers>
    <root level="error">
      <appenderRef ref="Console"/>
    </root>
  </loggers>
</configuration>

答案 1 :(得分:0)

好的,在网上进行了更多搜索之后,我找到了一个有效的例子(official site中可用的例子不适用于我)。这是适合我的文件:

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">

<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
  <appender name="console" class="org.apache.log4j.ConsoleAppender"> 
    <param name="Target" value="System.out"/> 
    <layout class="org.apache.log4j.PatternLayout"> 
      <param name="ConversionPattern" value="%-5p %c{1} - %m%n"/> 
    </layout> 
  </appender> 

  <root> 
    <priority value ="debug" /> 
    <appender-ref ref="console" /> 
  </root>

</log4j:configuration>