使用 log4j 登录 Java Web Start

Question

I am migrating my application to Java Web Start. I have a situation that my application logs the message using log4j and configuration file create the logs in the installation directory.

I am not sure how to create and store the logs while using Java Web Start. Could any one tell me how to specify the file location for log4j?

Answer 1

You can pass the option to the JVM when it starts. On windows, this would look like:

-Dlog4j.configuration=file:/C:/MyApp/bin/log4j.properties

Answer 2

我们可以在 log4j.property 文件中添加以下条目

log4j.appender.F.File=${user.home}/quest.log 

Answer 3

While using log4j to log in your JWS application, your jnlp should contain reference to log4j library like this

<resources>
    <jar href="log4j-1.2.16.jar"/>
</resources> 

The log4j jar file should be in the same directory as of your JWS application jar file.

Where to Log : Most preferred location to log is inside user home as the user has all rights there to create and modify files. log4j.appender.F.File=${user.home}/test.log

You may also like to use log4j socket appender, which sends the logging output to remote server.