SprngBoot 04.日志-分类和选择

快来打我* 2022-04-03 01:58 104阅读 0赞

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1.springboot默认导入日志依赖文件  
日志级别由高到低。

默认为info级别

package springboot_03log;
    
    import org.junit.Test;
    import org.junit.runner.RunWith;
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import org.springframework.boot.test.context.SpringBootTest;
    import org.springframework.test.context.junit4.SpringRunner;
    @RunWith(SpringRunner.class)
    @SpringBootTest
    public class MainTest { 
    	//获取log对象
    	Logger logger = LoggerFactory.getLogger(getClass());
    	
    	@Test
    	public void funTest(){ 
    		//日志级别由高到低
    		logger.trace("trace级别日志");
    		logger.debug("debug级别日志");
    		logger.info("info级别日志");//默认是info级别
    		logger.warn("warn级别日志");
    		logger.error("error级别日志");
    	}
    	
    }

2.修改日志打印级别

logging:
      level:
        springboot_03log: trace  #springboot_03log是要设置目标包下的输出级别

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