java使用log4j进行日志记录

小灰灰 2020-11-21 19:28 695阅读 0赞

**1.maven 坐标**

<dependency>
                <groupId>log4j</groupId>
                <artifactId>log4j</artifactId>
                <version>1.2.15</version>
            </dependency>
    
            
            <dependency>
                <groupId>commons-logging</groupId>
                <artifactId>commons-logging</artifactId>
                <version>1.2</version>
            </dependency>

**2.log4j.properties文件**（这个文件放到资源目录）

log4j.rootLogger = INFO , info, warn, error, stdout  
    
    
    ###控制台输出 
    log4j.appender.stdout = org.apache.log4j.ConsoleAppender  
    log4j.appender.stdout.Target = System.out  
    log4j.appender.stdout.layout = org.apache.log4j.PatternLayout  
    log4j.appender.stdout.layout.ConversionPattern =  %d{ABSOLUTE} %5p %c{
       1}:%L - %m%n  
    
    
    ###info级别输出 
    # 每天产生一个日志文件(dailyFile) 
    log4j.appender.dailyFile=org.apache.log4j.DailyRollingFileAppender
    
    log4j.logger.info = info   
    log4j.appender.info = org.apache.log4j.DailyRollingFileAppender  
    #windown 
    #log4j.appender.info.File = D:\\log\\GrtLog.log
    #linux 
    log4j.appender.info.File = /opt/grtlog/GrtLog.log
    log4j.appender.info.Append = true  
    log4j.appender.info.Threshold = INFO   
    log4j.appender.info.layout = org.apache.log4j.PatternLayout  
    log4j.appender.info.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n  
    #log4j.appender.info.datePattern='.'yyyy-MM-dd 
    log4j.appender.info.filter.infoFilter = org.apache.log4j.varia.LevelRangeFilter  
    log4j.appender.info.filter.infoFilter.LevelMin=INFO  
    log4j.appender.info.filter.infoFilter.LevelMax=INFO  
    
    
    ###warn级别输出 
    log4j.logger.warn = warn   
    log4j.appender.warn=org.apache.log4j.DailyRollingFileAppender   
    #windown
    #log4j.appender.warn.File = D:\\log\\GrtLog.log
    #linux 
    log4j.appender.warn.File = /opt/grtlog/GrtLog.log
    log4j.appender.warn.Append=true   
    log4j.appender.warn.Threshold=WARN   
    log4j.appender.warn.layout=org.apache.log4j.PatternLayout   
    log4j.appender.warn.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n  
    log4j.appender.warn.datePattern='.'yyyy-MM-dd  
    log4j.appender.warn.filter.warnFilter=org.apache.log4j.varia.LevelRangeFilter  
    log4j.appender.warn.filter.warnFilter.LevelMin=WARN  
    log4j.appender.warn.filter.warnFilter.LevelMax=WARN  
    
    
    ###error级别输出 
    log4j.logger.error = error   
    log4j.appender.error = org.apache.log4j.DailyRollingFileAppender  
    #windown 
    #log4j.appender.error.File = D:\\log\\GrtLog.log 
    #linux 
    log4j.appender.error.File = /opt/grtlog/GrtLog.log
    log4j.appender.error.Append = true  
    log4j.appender.error.Threshold = ERROR   
    log4j.appender.error.layout = org.apache.log4j.PatternLayout  
    log4j.appender.error.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n  
    log4j.appender.error.datePattern='.'yyyy-MM-dd  
    log4j.appender.error.filter.errorFilter=org.apache.log4j.varia.LevelRangeFilter  
    log4j.appender.error.filter.errorFilter.LevelMin=ERROR  
    log4j.appender.error.filter.errorFilter.LevelMax=ERROR

**3.main**

import org.apache.log4j.Logger;
    
    public class log4jTest {
        public static Logger logger1 = Logger.getLogger(log4jTest.class);
    
        public static void main(String[] args) {
            logger1.info("我是logger1");
    
        }
    
    }