logback为单独的包或者类配置输出文件

向右看齐 2022-05-16 06:08 232阅读 0赞

原文出处：[https://www.cnblogs.com/izecsonLee/p/9058385.html][https_www.cnblogs.com_izecsonLee_p_9058385.html]

最近接一个这样的需求，为某个类的日志输出到指定的文件。一般都是按日志级别输出到对应的文件中。查阅相关资料和logback教程，写出下面的demo供参考。

1.添加一个appender

![复制代码][copycode.gif]

<appender name="demo—all" class="ch.qos.logback.core.rolling.RollingFileAppender">
            <file>${rootpath}gateserver_demo-all.log</file>
            <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
                 <level>DEBUG</level>
            </filter>
            <rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy" >
                <FileNamePattern>${rootpath}demo-all.%i.log</FileNamePattern>
                <minIndex>1</minIndex>
                <maxIndex>10</maxIndex>
            </rollingPolicy>   
            <triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
                <maxFileSize>800MB</maxFileSize>
            </triggeringPolicy>    
             <encoder>
                 <pattern>%date [%thread] %-5level %logger{80} - %msg%n</pattern>
             </encoder>
      </appender>
    2 添加一个logger
    
    <logger name="org.xx.demo" level="DEBUG" additivity="false">

*      <appender-ref ref="demo—all" />    
 </logger>*

additivity必须设置为false，否则不光新的jetty日志文件会存储jetty的日志，原业务日志（root）文件也会存储.不继承root。

这样就OK了。

以下是logback的常用配置：

![复制代码][copycode.gif]

<?xml version="1.0" encoding="UTF-8"?>  
      
      
      
      
      
      
      
    <configuration scan="true" scanPeriod="60 seconds" debug="false">  
          
        <property name="log_dir" value="/logs/ev_cmdb" />  
          
        <property name="maxHistory" value="30"/>  
      
      
      
      
          
        <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">  
              
            <encoder>  
                <pattern>%d{yyyy-MM-dd HH:mm:ss} [%thread] %-5level %logger -%msg%n</pattern>  
            </encoder>  
        </appender>  
          
          
          
          
        <appender name="ERROR" class="ch.qos.logback.core.rolling.RollingFileAppender">  
              
            <filter class="ch.qos.logback.classic.filter.LevelFilter">  
                <level>ERROR</level>  
                <onMatch>ACCEPT</onMatch>  
                <onMismatch>DENY</onMismatch>  
            </filter>  
              
            <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">  
                  
                <fileNamePattern>${log_dir}/%d{yyyy-MM-dd}/error-log.log</fileNamePattern>  
                  
                <maxHistory>${maxHistory}</maxHistory>  
            </rollingPolicy>  
              
              
              
              
            <encoder>  
                <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger - %msg%n</pattern>  
            </encoder>  
        </appender>  
          
          
          
          
        <appender name="WARN" class="ch.qos.logback.core.rolling.RollingFileAppender">  
              
            <filter class="ch.qos.logback.classic.filter.LevelFilter">  
                <level>WARN</level>  
                <onMatch>ACCEPT</onMatch>  
                <onMismatch>DENY</onMismatch>  
            </filter>  
            <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">  
                  
                <fileNamePattern>${log_dir}/%d{yyyy-MM-dd}/warn-log.log  
                </fileNamePattern>  
                  
                <maxHistory>${maxHistory}</maxHistory>  
            </rollingPolicy>  
            <encoder>  
                <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger - %msg%n</pattern>  
            </encoder>  
        </appender>  
          
          
          
          
          
        <appender name="INFO" class="ch.qos.logback.core.rolling.RollingFileAppender">  
              
            <filter class="ch.qos.logback.classic.filter.LevelFilter">  
                <level>INFO</level>  
                <onMatch>ACCEPT</onMatch>  
                <onMismatch>DENY</onMismatch>  
            </filter>  
            <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">  
                  
                <fileNamePattern>${log_dir}/%d{yyyy-MM-dd}/info-log.log  
                </fileNamePattern>  
                  
                <maxHistory>${maxHistory}</maxHistory>  
            </rollingPolicy>  
            <encoder>  
                <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger - %msg%n</pattern>  
            </encoder>  
        </appender>  
          
          
          
          
          
        <appender name="DEBUG" class="ch.qos.logback.core.rolling.RollingFileAppender">  
              
            <filter class="ch.qos.logback.classic.filter.LevelFilter">  
                <level>DEBUG</level>  
                <onMatch>ACCEPT</onMatch>  
                <onMismatch>DENY</onMismatch>  
            </filter>  
            <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">  
                  
                <fileNamePattern>${log_dir}/%d{yyyy-MM-dd}/debug-log.log  
                </fileNamePattern>  
                  
                <maxHistory>${maxHistory}</maxHistory>  
            </rollingPolicy>  
            <encoder>  
                <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger - %msg%n</pattern>  
            </encoder>  
        </appender>  
          
          
          
          
          
        <appender name="TRACE" class="ch.qos.logback.core.rolling.RollingFileAppender">  
              
            <filter class="ch.qos.logback.classic.filter.LevelFilter">  
                <level>TRACE</level>  
                <onMatch>ACCEPT</onMatch>  
                <onMismatch>DENY</onMismatch>  
            </filter>  
            <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">  
                  
                <fileNamePattern>${log_dir}/%d{yyyy-MM-dd}/trace-log.log  
                </fileNamePattern>  
                  
                <maxHistory>${maxHistory}</maxHistory>  
            </rollingPolicy>  
            <encoder>  
                <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger - %msg%n</pattern>  
            </encoder>  
        </appender>  
      
        <logger name="java.sql.PreparedStatement" value="DEBUG" />    
        <logger name="java.sql.Connection" value="DEBUG" />    
        <logger name="java.sql.Statement" value="DEBUG" />    
        <logger name="com.ibatis" value="DEBUG" />    
        <logger name="com.ibatis.common.jdbc.SimpleDataSource" value="DEBUG" />    
        <logger name="com.ibatis.common.jdbc.ScriptRunner" level="DEBUG"/>    
        <logger name="com.ibatis.sqlmap.engine.impl.SqlMapClientDelegate" value="DEBUG" />    
          
          
          
          
        <root level="debug">  
              
            <appender-ref ref="STDOUT" />  
              
            <appender-ref ref="ERROR" />  
            <appender-ref ref="INFO" />  
            <appender-ref ref="WARN" />  
            <appender-ref ref="DEBUG" />  
            <appender-ref ref="TRACE" />  
        </root>  
    </configuration>

![复制代码][copycode.gif]

java代码：

![复制代码][copycode.gif]

import org.slf4j.Logger;  
    import org.slf4j.LoggerFactory;  
      
    public class LogUtils {  
        /** 
         * 错误输入日志 
         */  
        public static final Logger log = LoggerFactory.getLogger(LogUtils.class);  
      
        /** 
         * 记录一直 info信息 
         *  
         * @param message 
         */  
        public static void logInfo(String message) {  
            StringBuilder s = new StringBuilder();  
            s.append((message));  
            log.info(s.toString());  
        }  
      
        public static void logInfo(String message, Throwable e) {  
            StringBuilder s = new StringBuilder();  
            s.append(("exception : -->>"));  
            s.append((message));  
            log.info(s.toString(), e);  
        }  
      
        public static void logWarn(String message) {  
            StringBuilder s = new StringBuilder();  
            s.append((message));  
      
            log.warn(s.toString());  
        }  
      
        public static void logWarn(String message, Throwable e) {  
            StringBuilder s = new StringBuilder();  
            s.append(("exception : -->>"));  
            s.append((message));  
            log.warn(s.toString(), e);  
        }  
      
        public static void logDebug(String message) {  
            StringBuilder s = new StringBuilder();  
            s.append((message));  
            log.debug(s.toString());  
        }  
      
        public static void logDebug(String message, Throwable e) {  
            StringBuilder s = new StringBuilder();  
            s.append(("exception : -->>"));  
            s.append((message));  
            log.debug(s.toString(), e);  
        }  
      
        public static void logError(String message) {  
            StringBuilder s = new StringBuilder();  
            s.append(message);  
            log.error(s.toString());  
        }  
      
        /** 
         * 记录日志错误信息 
         *  
         * @param message 
         * @param e 
         */  
        public static void logError(String message, Throwable e) {  
            StringBuilder s = new StringBuilder();  
            s.append(("exception : -->>"));  
            s.append((message));  
            log.error(s.toString(), e);  
        }  
    }

![复制代码][copycode.gif]

测试：

![复制代码][copycode.gif]

import java.io.File;  
    import java.io.IOException;  
      
    import org.junit.Before;  
    import org.junit.Test;  
    import org.slf4j.Logger;  
    import org.slf4j.LoggerFactory;  
      
    import ch.qos.logback.core.joran.spi.JoranException;  
      
    import com.ghca.easyview.server.common.utils.LogBackConfigLoader;  
    import com.ghca.easyview.server.common.utils.LogUtils;  
    import com.ghca.easyview.server.config.ServerConfig;  
      
    public class TestLog {  
      
        @Before  
        public void before() {  
            File file = new File(System.getProperty("user.dir"));  
            String path = file.getPath() + File.separator + "conf";  
            // 将主要配置文件路径赋值给 ServerConfig.configPath属性  
            ServerConfig.config_path = path;  
            try {  
                // 加载日志文件  
                LogBackConfigLoader.load(ServerConfig  
                        .loadLogBackConfPath("logback.xml"));  
            } catch (IOException | JoranException e) {  
                e.printStackTrace();  
            }  
        }  
      
        @Test  
        public void test1() {  
            LogUtils.logInfo("INFO ~");  
            LogUtils.logDebug("DEBUG ~");  
            LogUtils.logError("ERROR~");  
            LogUtils.logWarn("WARN ~");  
        }  
    }

[https_www.cnblogs.com_izecsonLee_p_9058385.html]: https://www.cnblogs.com/izecsonLee/p/9058385.html
[copycode.gif]: /images/20220516/1bdf51696dd1454aab6bb675f51f4dd5.png