2.log4j.properties例子:FileAppender
2012-07-30 10:04
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package com.v512.log4j; import org.apache.log4j.Logger; public class HelloLog4J { // 构造记录器,形参是记录器所在的类,表示要在该类做日志 private static Logger logger = Logger.getLogger(HelloLog4J.class); /** * @param args */ public static void main(String[] args) { getMessage(); } private static void getMessage() { // 记录下各种级别的信息,这些信息放在哪儿,以哪种方式存放,在log4j.properties文件中配置. logger.debug("This is debug message."); logger.info("This is a info message."); logger.warn("This is a warn message."); logger.error("This is a error message."); } }
log4j.rootLogger=info,file log4j.appender.file=org.apache.log4j.FileAppender log4j.appender.file.File=Message.log log4j.appender.file.layout=org.apache.log4j.TTCCLayout
Message.log(工程目录下) [main] INFO com.v512.log4j.HelloLog4J - This is a info message. [main] WARN com.v512.log4j.HelloLog4J - This is a warn message. [main] ERROR com.v512.log4j.HelloLog4J - This is a error message.
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