java - log4j 不写入文件

Question

这是我的 log4j.properties

# Define the root logger with appender file
log4j.rootLogger = DEBUG,FILE

# Define the file appender
log4j.appender.FILE=org.apache.log4j.FileAppender
log4j.appender.FILE.File=/media/.I have given the whole path../MyProject/log.log

# Define the layout for file appender
log4j.appender.FILE.layout=org.apache.log4j.PatternLayout
log4j.appender.FILE.layout.conversionPattern=%d{MM-dd@HH:mm:ss} %-5p (%13F:%L) %3x - %m%n

这是我的java文件

package examples;

import java.util.logging.Logger;

import org.apache.log4j.PropertyConfigurator;

public class Test {

    static Logger logger = Logger.getLogger(Test.class.getName());

    public static void main(String a[]){

        //PropertiesConfigurator is used to configure logger from properties file
        PropertyConfigurator.configure("log4j.properties");

        //Log in console in and log file
        //logger.debug("Log4j appender configuration is successful !!");
        logger.info("Log4j appender configuration is successful !!");

    }   

}

我仍然在控制台上收到输出消息，只是我的 log.log 文件为空。我有该文件的写权限我在 eclipse 中运行这个是一个问题。

Answer 1

使用 log4j 包中的记录器。

import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;

像这样创建你的记录器:

static final Logger logger = LogManager.getLogger(Test.class.getName());

log4j 无法捕获 java.util.logging 日志消息。