loggstash接受不到项目中的log4j日志信息

log4j.rootLogger = debug,logstash

#输出日志到logstash

log4j.appender.logstash=org.apache.log4j.net.SocketAppender

log4j.appender.logstash.RemoteHost=192.168.22.75

log4j.appender.logstash.port=4560

log4j.appender.logstash.ReconnectionDelay=60000

log4j.appender.logstash.LocationInfo=true

 @Test

    public void testU(){

        logger.debug("This is a debug message!");

        logger.info("This is info message!");

        logger.warn("This is a warn message!");

        logger.error("This is error message!");

    }

input {

    log4j {

	mode => "server"

        host => "192.168.22.75"

        port => 4560

    }

}

output

 {

stdout { }

}