logback日志文件的使用

1、引入Jar包，Maven pom.xml

                 <!-- Logging with SLF4J & LogBack -->
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>jcl-over-slf4j</artifactId>
             <version>1.7.</version>
         </dependency>
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-api</artifactId>
             <version>1.7.</version>
         </dependency>
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>jul-to-slf4j</artifactId>
             <version>1.7.</version>
         </dependency>
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-classic</artifactId>
             <version>1.1.</version>
         </dependency>
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-core</artifactId>
             <version>1.1.</version>
         </dependency>
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-access</artifactId>
             <version>1.1.</version>
         </dependency>

2、配置日志文件 logback.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <configuration>
     <contextListener class="ch.qos.logback.classic.jul.LevelChangePropagator">
         <resetJUL>true</resetJUL>
     </contextListener>
     <!-- To enable JMX Management -->
     <jmxConfigurator />

     <!-- 打印到控制台 -->
     <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
         <!-- encoder 默认配置为PatternLayoutEncoder -->
         <layout class="ch.qos.logback.classic.PatternLayout">
             <Pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{} - %msg%n</Pattern>
         </layout>
     </appender>

     <!-- 打印日志到文件 -->
     <!-- 所有日志文件 -->
     <appender name="AllLog" class="ch.qos.logback.core.rolling.RollingFileAppender">
         <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
             <fileNamePattern>log/shiro/all/%d{yyyy-MM-dd}.log</fileNamePattern>
             <maxHistory></maxHistory>
         </rollingPolicy>
         <encoder>
             <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{} - %msg%n</pattern>
         </encoder>
     </appender>
     <!-- Task日志文件 -->
     <appender name="Tasklog" class="ch.qos.logback.core.rolling.RollingFileAppender">
         <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
             <fileNamePattern>log/shiro/task/%d{yyyy-MM-dd}.log</fileNamePattern>
             <maxHistory></maxHistory>
         </rollingPolicy>
         <encoder>
             <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{} - %msg%n</pattern>
         </encoder>
     </appender>

     <!-- 为莫个包下的所有类指定Appender 这里也可以指定类名称例如：com.mcs.task.ClassName -->
      <logger name="cn.mcs.test" level="DEBUG" >
          <appender-ref ref="STDOUT" />
      </logger>
      <logger name="cn.mcs.task" level="DEBUG" >
          <appender-ref ref="Tasklog" />
      </logger>

      <logger name="org.springframework" level="INFO" />
        <logger name="org.springframework.beans" level="DEBUG" />

     <!-- 常用级别：ERROR 、WARN 、INFO 、DEBUG 、TRACE -->
     <root level="WARN">
         <appender-ref ref="STDOUT" />
         <!-- <appender-ref ref="AllLog" /> -->
       </root>

 </configuration>  

3、在程序中使用

 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;  

 public class LogbackTest {
     private static Logger log = LoggerFactory.getLogger(LogbackTest .class);
     public static void main(String[] args) {
         log.trace("======trace");
         log.debug("======debug");
         log.info("======info");
         log.warn("======warn");
         log.error("======error");
     }
 }