java - 删除 log4j 相关文件后出现 Log4j 警告

Question

我正在尝试在我的机器上运行一个 mvc 示例代码。我已经注释了所有 Log4j 导入并注释了代码中的所有记录器语句。但仍然在控制台中收到警告。我删除了包含 log4j.properties 的资源文件夹。

Mar 26, 2014 8:03:48 AM org.apache.catalina.core.AprLifecycleListener init
INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Java\jre7\bin;C:\WINDOWS\Sun\Java\bin;C:\WINDOWS\system32;C:\WINDOWS;C:/Riya/software_downloads/eclipse/jre/bin/server;C:/Riya/software_downloads/eclipse/jre/bin;C:/Riya/software_downloads/eclipse/jre/lib/amd64;C:\Program Files\Java\jdk1.7.0_09\bin;C:Program Files\apache-maven-3.2.1\bin;;C:\Riya\software_downloads\eclipse;;.
Mar 26, 2014 8:03:49 AM org.apache.tomcat.util.digester.SetPropertiesRule begin
WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:GeneratingBills' did not find a matching property.
Mar 26, 2014 8:03:49 AM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["http-bio-8086"]
Mar 26, 2014 8:03:49 AM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["ajp-bio-8009"]
Mar 26, 2014 8:03:49 AM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 448 ms
Mar 26, 2014 8:03:49 AM org.apache.catalina.core.StandardService startInternal
INFO: Starting service Catalina
Mar 26, 2014 8:03:49 AM org.apache.catalina.core.StandardEngine startInternal
INFO: Starting Servlet Engine: Apache Tomcat/7.0.34
Mar 26, 2014 8:03:53 AM org.apache.catalina.core.ApplicationContext log
INFO: No Spring WebApplicationInitializer types detected on classpath
Mar 26, 2014 8:03:53 AM org.apache.catalina.core.ApplicationContext log
INFO: Initializing Spring root WebApplicationContext
log4j:WARN No appenders could be found for logger (org.springframework.web.context.ContextLoader).
log4j:WARN Please initialize the log4j system properly.
Mar 26, 2014 8:03:55 AM org.apache.catalina.core.ApplicationContext log
INFO: Initializing Spring FrameworkServlet 'spring'
Mar 26, 2014 8:03:55 AM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-bio-8086"]
Mar 26, 2014 8:03:55 AM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["ajp-bio-8009"]
Mar 26, 2014 8:03:55 AM org.apache.catalina.startup.Catalina start
INFO: Server startup in 6088 ms

Answer 1

如果您不需要任何日志记录，您可以安全地忽略该 WARN 消息，它只说明没有完成 log4j 配置。

如果你的问题只是下面的警告，

log4j:WARN No appenders could be found for logger (org.springframework.web.context.ContextLoader).
log4j:WARN Please initialize the log4j system properly.

添加一个 log4j.properties 并添加下面的单行，它不会显示警告并会关闭所有日志记录。

log4j.rootLogger=OFF