springboot 整合日志常见错误 - 类找不到

小鱼儿 2022-04-06 12:08 259阅读 0赞

错误

![ac36078c-2868-3554-b91a-76e1870753ac.png][]

原因：缺少 commons-logging.jar

解决方案：

如果用的是maven 则添加依赖即可

<dependency>
    			<groupId>commons-logging</groupId>
    			<artifactId>commons-logging</artifactId>
    			<version>1.1.1</version>
    		</dependency>

参考：[ ][Link 1][https://www.cnblogs.com/yqskj/archive/2013/03/17/2964193.html][Link 1]

附（springboot 整合log4j日志）：

（1）添加依赖

<dependencies>
    		<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter</artifactId>
    			<exclusions>
    				<exclusion>
    					<groupId>org.springframework.boot</groupId>
    					<artifactId>spring-boot-starter-logging</artifactId>
    				</exclusion>
    			</exclusions>
    		</dependency>
    
    		<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter-test</artifactId>
    			<scope>test</scope>
    		</dependency>
    
    	
    
    		<dependency>
    			<groupId>log4j</groupId>
    			<artifactId>log4j</artifactId>
    			<version>1.2.17</version>
    		</dependency>
    		<dependency>
    			<groupId>org.slf4j</groupId>
    			<artifactId>log4j-over-slf4j</artifactId>
    			<version>1.7.7</version>
    			<scope>test</scope>
    		</dependency>
    		<dependency>
    			<groupId>commons-logging</groupId>
    			<artifactId>commons-logging</artifactId>
    			<version>1.1.1</version>
    		</dependency>
    
    	</dependencies>

（2）新建log4j.properties 文件

log4j.rootLogger=INFO,console
    
    # for package com.demo.elk, log would be sent to socket appender.
    log4j.logger.com.forezp=DEBUG, socket
    
    # appender socket
    log4j.appender.socket=org.apache.log4j.net.SocketAppender
    log4j.appender.socket.Port=4560
    log4j.appender.socket.RemoteHost=localhost
    log4j.appender.socket.layout=org.apache.log4j.PatternLayout
    log4j.appender.socket.layout.ConversionPattern=%d [%-5p] [%l] %m%n
    log4j.appender.socket.ReconnectionDelay=10000
    
    # appender console
    log4j.appender.console=org.apache.log4j.ConsoleAppender
    log4j.appender.console.target=System.out
    log4j.appender.console.layout=org.apache.log4j.PatternLayout
    log4j.appender.console.layout.ConversionPattern=%d [%-5p] [%l] %m%n

（3）使用logger打印日志

private static final Logger logger = Logger.getLogger(AppTests.class);
    
    
     @Test
    	public  void  test(){
              for (int i = 0 ; i<1000;i++){
              	logger.info(" 第 " + i + " 次说 love u ");
    		  }
    	}

[ac36078c-2868-3554-b91a-76e1870753ac.png]: /images/20220406/b5ae0e8bf74b4b74814b715c4cc261c6.png
[Link 1]: https://www.cnblogs.com/yqskj/archive/2013/03/17/2964193.html