使用logback.xml配置来实现日志文件输出

Logback是由log4j创始人设计的又一个开源日志组件。logback当前分成三个模块：logback-core,logback- classic和logback-access。logback-core是其它两个模块的基础模块。logback-classic是log4j的一个 改良版本。此外logback-classic完整实现SLF4J API使你可以很方便地更换成其它日志系统如log4j或JDK14 Logging。logback-access访问模块与Servlet容器集成提供通过Http来访问日志的功能。

 

logback.xml配置如下：

 

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







     <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%npattern>
         encoder>
     appender>




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

         <filter class="ch.qos.logback.classic.filter.LevelFilter">
             <level>ERRORlevel>
             <onMatch>ACCEPTonMatch>
             <onMismatch>DENYonMismatch>
         filter>

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

             <fileNamePattern>${log_dir}/%d{yyyy-MM-dd}/error-log.logfileNamePattern>

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

         <filter class="ch.qos.logback.classic.filter.LevelFilter">
             <level>WARNlevel>
             <onMatch>ACCEPTonMatch>
             <onMismatch>DENYonMismatch>
         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%npattern>
         encoder>
     appender>





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

         <filter class="ch.qos.logback.classic.filter.LevelFilter">
             <level>INFOlevel>
             <onMatch>ACCEPTonMatch>
             <onMismatch>DENYonMismatch>
         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%npattern>
         encoder>
     appender>





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

         <filter class="ch.qos.logback.classic.filter.LevelFilter">
             <level>DEBUGlevel>
             <onMatch>ACCEPTonMatch>
             <onMismatch>DENYonMismatch>
         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%npattern>
         encoder>
     appender>





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

         <filter class="ch.qos.logback.classic.filter.LevelFilter">
             <level>TRACElevel>
             <onMatch>ACCEPTonMatch>
             <onMismatch>DENYonMismatch>
         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%npattern>
         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>

 

 

LogUtils.java

 

 package log.base;

 package com.ghca.easyview.server.common.utils;

 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);
     }
 }

 

TEST

 package com.ghca.easyview.server.log.test;

 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 ~");
     }
 }

 

 根据日志级别输出不等的日志信息，