@RunWith(SpringRunner.class)

@SpringBootTest

@Slf4j

public class  LogTest {

    @Test

    public void test1(){

        String name ="imooc";

        String password = "1223";

        log.debug("debug...");

        log.info("name:{},  password:{}",name,password);

        log.error("error...");

    }

}

 <?xml version="1.0" encoding="UTF-8" ?>

 <configuration>

 //内容展示形式

     <appender name="consoleLog" class="ch.qos.logback.core.ConsoleAppender">

         <layout class = "ch.qos.logback.classic.PatternLayout">

             <pattern>

                 %d - %msg%n

             </pattern>

         </layout>

     </appender>

13 //针对不同级别输出到不同文件里

     <appender name="fileInfoLog" class="ch.qos.logback.core.rolling.RollingFileAppender">

         <!--过滤器，刨除error级别-->

         <filter class="ch.qos.logback.classic.filter.LevelFilter">

             <level>ERROR</level>

             <onMatch>DENY</onMatch>

             <onMismatch>ACCEPT</onMismatch>

         </filter>

         <encoder>

             <pattern>

                 %msg%n

             </pattern>

         </encoder>

         <!--滚动策略-->

         <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">

             <fileNamePattern>H:\self\log\info.%d.log</fileNamePattern>

         </rollingPolicy>

     </appender>

     <appender name="fileErrorLog" class="ch.qos.logback.core.rolling.RollingFileAppender">

         <!--过滤器，保留error及以上-->

         <filter class="ch.qos.logback.classic.filter.ThresholdFilter">

             <level>ERROR</level>

         </filter>

         <encoder>

             <pattern>

                 %msg%n

             </pattern>

         </encoder>

         <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">

             <fileNamePattern>H:\self\log\error.%d.log</fileNamePattern>

         </rollingPolicy>

     </appender>

 //项目适用root（全项目适用），适用级别为“info”
     <root level="info">

         <appender-ref ref="consoleLog"/>

         <appender-ref ref="fileInfoLog"/>

         <appender-ref ref="fileErrorLog"/>

     </root>

 </configuration>