Re: [appengine-java] Log4j in production GAE

[Rusty Wright]

I also vote for slf4j.  If you need a "for example", here's my logback.xml 
file, which lives in the WEB-INF/classes directory:

<?xml version="1.0" encoding="UTF-8"?>

<!-- <pattern>%date{yyyy-MM-dd HH:mm:ss.SSS z}, %5level: [%thread] %class.%method.%line: 
%message%n</pattern> -->
<configuration debug="true">
   <appender class="ch.qos.logback.core.ConsoleAppender" 
name="RootConsoleAppender">
       <layout class="ch.qos.logback.classic.PatternLayout">
           <pattern>%5level: [%thread] %class.%method.%line: 
%message%n</pattern>
       </layout>
   </appender>

   <logger name="org.springframework.beans">
       <level
           value="warn"
       />
   </logger>

   <logger name="org.springframework.transaction">
       <level
           value="debug"
       />
   </logger>

   <logger name="org.springframework.orm.jdo.JdoTransactionManager">
       <level
           value="debug"
       />
   </logger>

<!--
   <logger 
name="com.google.appengine.repackaged.com.google.common.base.FinalizableReferenceQueue">
       <level
           value="warn"
       />
   </logger>
-->

   <root>
       <level
           value="info"
       />

       <appender-ref
           ref="RootConsoleAppender"
       />
   </root>
</configuration>


?? wrote:

I use slf4j!
use slf4j-log4j when development!

use slf4j-jdk log when GAE Server!(change slf4j-log4j to slf4j-jdk-log before GAE appcfg update war)

2010/2/2 Alex <alexanderko...@gmail.com <mailto:alexanderko...@gmail.com>>

    Hello,

    Has anyone tried to use Log4j in production GAE? Is it supported?

    According to Java GAE docs, only java.util.logging is fully supported.
    See http://code.google.com/appengine/docs/java/runtime.html#Logging

    [...]
     Any logging framework (such as log4j) that logs to the output or
    error streams will work. However, for more fine-grained control of the
    Admin Console's log level display, the logging framework must use a
    java.util.logging adapter.
    [...]

    On the other hand, I see that log4j.properties is included into every
    project created by GAE Eclipse plugin.

    I tried Log4j in a test application and Lo4j is working fine in
    development environment. But it doesn't (just does nothing) when I
    deploy my test application into live GAE server.

    Thanks in advance for any info,
    Alex

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