java——log4j保存错误日志并发送邮件通知

傷城~ 2022-03-24 14:56 332阅读 0赞

一、添加依赖

<dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.17</version>
    </dependency>
    
    <dependency>
    	<groupId>javax.mail</groupId>
    	<artifactId>mail</artifactId>
    	<version>1.4.7</version>
    </dependency>
    
    <dependency>
        <groupId>javax.activation</groupId>
        <artifactId>activation</artifactId>
        <version>1.1.1</version>
    </dependency>

二、编写log4j.properties文件，该文件需位于classpath文件包含的目录下

log4j.rootLogger=DEBUG,D,MAIL
    
    ### log file ###
    log4j.appender.D = org.apache.log4j.DailyRollingFileAppender
    log4j.appender.D.File =../logs/error.log
    log4j.appender.D.Append = true
    log4j.appender.D.Threshold = ERROR
    log4j.appender.D.layout = org.apache.log4j.PatternLayout
    log4j.appender.D.layout.ConversionPattern = [%p] [%-d{yyyy-MM-dd HH:mm:ss}] %C.%M(%L) | %m%n
     
    ### mail ###
    log4j.appender.MAIL=org.apache.log4j.net.SMTPAppender
    log4j.appender.MAIL.Threshold=ERROR
    log4j.appender.MAIL.BufferSize=10
    log4j.appender.MAIL.From=x.x@x.com
    log4j.appender.MAIL.SMTPHost=mail.x.com
    log4j.appender.MAIL.SMTPPort=587
    log4j.appender.MAIL.SMTPUsername=xx
    log4j.appender.MAIL.SMTPPassword=xx
    log4j.appender.MAIL.SMTPDebug=true
    log4j.appender.MAIL.Subject=Log4JErrorMessage
    log4j.appender.MAIL.To=x.x@x.com
    #log4j.appender.MAIL.layout=org.apache.log4j.HTMLLayout
    log4j.appender.MAIL.layout=org.apache.log4j.PatternLayout
    log4j.appender.MAIL.layout.ConversionPattern=%d %-5p [%t] (%c{1}:%L) - %m%n

三、测试

import org.apache.log4j.Logger;
    
    public class Log4jTest {
    	private static Logger logger=Logger.getLogger(Log4jTest.class);
    	public static void main(String[] args) {
    		// TODO 自动生成的方法存根
    		logger.error("error...");
    		logger.info("info...");
    	}
    
    }

运行后会发现项目根目录会生错误成日志文件，同时将错误日志发送邮件通知。