Java-log4既不打印到控制台也不打印到文件

我正试图使用log4j将消息从一个独立的Java应用程序打印到Eclipse中的控制台,但它没有打印任何内容。这是代码:

公告

    static Logger logger = LoggerFactory.getLogger(AnalyticsBackupUtil.class);

打印报表:

public static void main(String args[]) {

    String log4jConfigFile = System.getProperty("user.dir") + File.separator + "log4j.properties";
    PropertyConfigurator.configure(log4jConfigFile);
    logger.debug("this is a debug log message");
    logger.info("this is a information log message");
    logger.warn("this is a warning log message");
    logger.error("this is an error log message");

...

属性文件:

log4j.rootLogger=DEBUG, Appender1,Appender2
log4j.appender.Appender1=org.apache.log4j.ConsoleAppender
log4j.appender.Appender1.layout=org.apache.log4j.PatternLayout
log4j.appender.Appender1.layout.ConversionPattern=%-7p %d [%t] %c %x - %m%n
log4j.appender.Appender2=org.apache.log4j.FileAppender
log4j.appender.Appender2.File=applog.txt
log4j.appender.Appender2.layout=org.apache.log4j.PatternLayout
log4j.appender.Appender2.layout.ConversionPattern=%-7p %d [%t] %c %x - %m%n

专家

<dependency>
    <groupId>log4j</groupId>
    <artifactId>log4j</artifactId>
    <version>1.2.17</version>
</dependency>

知道可能是什么问题吗?