使用org.apache.commons.logging写日志文件

   <groupId>commons-logging</groupId>
   <artifactId>commons-logging</artifactId>
   <version>1.2</version>
</dependency>

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class MyClass {
    private static final Log log = LogFactory.getLog(MyClass.class);
}

log.info("This is an info message.");
log.warn("This is a warning message.");
log.error("This is an error message.");

log4j.rootLogger=INFO, stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n