log4j异步文件日志输出配置

<appender name="ASYNC_Hibernate_SQL" class="org.apache.log4j.AsyncAppender">   

     <param name="BufferSize" value="512"/>   

     <appender-ref ref="Hibernate_SQL"/>

   </appender>

   

    <category name="org.hibernate.SQL">

        <priority value="TRACE" />     

        <appender-ref ref="ASYNC_Hibernate_SQL" />

    </category>

   

    <category name="org.hibernate.type">

        <priority value="TRACE" />     

        <appender-ref ref="ASYNC_Hibernate_SQL" />

    </category>