log4j使用

log4j.properties

# Set root category priority to INFO and its only appender to CONSOLE.

log4j.rootCategory=ERROR, CONSOLE

#log4j.rootCategory=INFO, CONSOLE, LOGFILE

 

# Set the enterprise logger category to FATAL and its only appender to CONSOLE.

log4j.logger.org.apache.axis.enterprise=FATAL, CONSOLE

 

# CONSOLE is set to be a ConsoleAppender using a PatternLayout.

log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender

#log4j.appender.CONSOLE.Threshold=DEBUG

log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout

log4j.appender.CONSOLE.layout.ConversionPattern=- %m %n

#单独设置SQL语句的输出的级别为DEBUG级别

#方法级别

#log4j.logger.www.ygb.mybatis.mapper.UserMapper.selAll=DEBUG

#类级别

#log4j.logger.www.ygb.mybatis.mapper.UserMapper=DEBUG

#包级别

log4j.logger.www.ygb.mybatis.mapper=DEBUG

# LOGFILE is set to be a File appender using a PatternLayout.

log4j.appender.LOGFILE=org.apache.log4j.FileAppender

log4j.appender.LOGFILE.File=/test/axis.log

log4j.appender.LOGFILE.Append=true

log4j.appender.LOGFILE.Threshold=INFO

log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout

log4j.appender.LOGFILE.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n

测试代码

package www.ygb.mybatis.pojo;

import org.apache.log4j.Logger;
import org.junit.Test;

public class TestLog4j {
    @Test
    public void log4j(){
        Logger logger = Logger.getLogger(TestLog4j.class);
        logger.fatal("系统错误");
        logger.error("错误级别");
        logger.warn("警告");
        logger.info("信息");
        logger.debug("测试");
    }
    
}

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