Java log4j 无法读取配置文件
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log4j Could not read configuration file
提问by rottmanj
I am adding logging to a java web project I am working on. I have run into an error that I am unable to figure out.
我正在将日志记录添加到我正在处理的 Java Web 项目中。我遇到了一个我无法弄清楚的错误。
The error I am getting from tomcat is:log4j:ERROR Could not read configuration file [log4j.properties].
java.io.FileNotFoundException: log4j.properties (No such file or directory)
我从 tomcat 得到的错误是：log4j:ERROR Could not read configuration file [log4j.properties].
java.io.FileNotFoundException: log4j.properties (No such file or directory)
I have this simple method in my class:
我的课上有这个简单的方法：
@RemotingInclude
public UserAccount save(UserAccount dataObject)
{
PropertyConfigurator.configure("log4j.properties");
logger.debug(dataObject.toString());
return dao.save(dataObject);
}
When I look in my webapps//WEB-INF/class folder I do see my log4j.properties file. When I deploy to my tomcat server and restart tomcat, I do see my admin.log file created, but nothing is written to it. Even after hitting the method above. Any help with this is greatly appreciated.
当我查看我的 webapps//WEB-INF/class 文件夹时，我确实看到了我的 log4j.properties 文件。当我部署到我的 tomcat 服务器并重新启动 tomcat 时，我确实看到我的 admin.log 文件已创建，但没有写入任何内容。即使在点击上面的方法之后。非常感谢您对此的任何帮助。
This is the current contents of my log4j.properties file:
这是我的 log4j.properties 文件的当前内容：
log4j.appender.AdminFileAppender=org.apache.log4j.FileAppender
log4j.appender.AdminFileAppender.File=admin.log
log4j.appender.AdminFileAppender.layout=org.apache.log4j.PatternLayout
log4j.appender.AdminFileAppender.layout.ConversionPattern= %-4r [%t] %-5p %c %x - %m%n.
log4j.appender.ReportFileAppender=org.apache.log4j.FileAppender
log4j.appender.ReportFileAppender.File=report.log
log4j.appender.ReportFileAppender.layout=org.apache.log4j.PatternLayout
log4j.appender.ReportFileAppender.layout.ConversionPattern= %-4r [%t] %-5p %c %x - %m%n
log4j.logger.com.rottmanj.services=WARN,AdminFileAppender
采纳答案by Alfredo Osorio
That approach of bootstraping the Log4j is wrong. This is usually the way that is implemented:
这种引导 Log4j 的方法是错误的。这通常是实现的方式：
import org.apache.log4j.Logger;
public class MyService {
public UserAccount save(UserAccount dataObject) {
logger.debug(dataObject.toString());
return dao.save(dataObject);
}
private static Logger logger = Logger.getLogger(MyService.class);
}
This way Log4j will automatically lookup for the log4j.properties in the root of the classpath.
这样 Log4j 将自动在类路径的根目录中查找 log4j.properties。
