警告: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting

在eclipse GANYMEDE中apache-tomcat-6.0.16加载工程后，启动服务器就会出现如下的红色警告信息，真是让人不爽：

2008-10-11 21:33:55 org.apache.tomcat.util.digester.SetPropertiesRule begin

警告: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property ‘source’ to ‘org.eclipse.jst.jee.server:TestTomcat6.0.16′ did not find a matching property.

2008-10-11 21:33:55 org.apache.catalina.core.AprLifecycleListener init

信息: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: D:\study tools\Java\jdk1.5.0_06\bin;.;C:\WINDOWS\system32;C:\WINDOWS;D:/study tools/Java/jdk1.5.0_06/bin/../jre/bin/client;D:/study tools/Java/jdk1.5.0_06/bin/../jre/bin;D:\study tools\Borland\Delphi7\Bin;D:\study tools\Borland\Delphi7\Projects\Bpl\;D:\study tools\Java\jdk1.5.0_06\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;D:\study tools\MySQL\MySQL Server 5.0\bin;C:\Program Files\Microsoft SQL Server\80\Tools\BINN

在网上查找答案，有的说将Tomcat的版本换成6.0.14就可以了；还有的说在建立Dynamic Web Project时把”Dynamic Web Module”选项后面的版本号由2.5改成2.4也行。不过这些回答好像都不能真正地解决问题。

出现SetPropertiesRule警告的原因是因为Tomcat在server.xml的Context节点中不支持source属性：<Context docBase=”…” path=”/…” source=”org.eclipse.jst.j2ee.server:…”/>

解决方法是在Servers视图里双击创建的server，然后在其server的配置界面中选中”Publish module contexts to separate XML files”选项。

不过”Publish module contexts to separate XML files”究竟是什么意思，有必要看下”Tomcat Publishing Options“。