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2021-09-07 13:15:16
@SpringBootApplication
public class Log4jTestApplication {//在info和warn中间定义新的日志级别
final static Level MIRINFO = Level.forName("MIRINFO", 310);
final static Level URINFO = Level.forName("URINFO", 320);
private static final Logger logger = LogManager.getLogger(Log4jTestApplication.class);
public static void main(String[] args) {
SpringApplication.run(Log4jTestApplication.class, args);
logger.info("info");
logger.warn("warn");
logger.error("error");
logger.log(MIRINFO, "MIRINFO");
logger.log(URINFO,"URINFO");
}}
更多相关内容 -
log4j2 自定义日志级别
2018-11-16 15:15:38注意 : intLevel 值越小,级别越高 (log4j2 官方文档) 自定义日志级别 第一步 :声明自定义级别 intLevel参考上面的值 <CustomLevels> <CustomLevel name="INITLEVEL&...log4j内置日志级别
注意 : intLevel 值越小,级别越高 (log4j2 官方文档)
自定义日志级别
第一步 :声明自定义级别 intLevel参考上面的值
<CustomLevels> <CustomLevel name="INITLEVEL" intLevel="240" /> </CustomLevels>
第二步 : 配置自定义级别输出
<loggers> <root level="warn"> <appender-ref ref="Console"/> </root> <logger name="initLog" level="INITLEVEL" additivity="false"> <appender-ref ref="Console" /> </logger> </loggers>
注意 : root的级别一定要比自定义级别高,要不然不能输出。例如warn 的级别是300 ,自定义级别是350 ,那么自定义级别的日志就不能输出了。
第三步:使用自定义级别:
private Logger log = LogManager.getLogger(ScheduleJobServiceImpl.class.getName()); log.log(Level.getLevel("INITLEVEL"), "初始化日志输出测试");
注:官方网站还给出了另一种自定义级别的使用方式。
private static final ExtLogger logger = ExtLogger.create(MyService.class); //自定义级别 logger.diag("another message");
看起来代码更简介,更易用,
但是需要自己写个日志的扩展对象。有机会的话日后补充。
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log4j2自定义级别日志
2020-08-19 17:43:21实际开发项目中有时候需要将某些信息单独输出到一个文件以做分析,为了让日志信息更清晰,这时就可以用到log4j2的自定义日志级别输出到独立的文件中。 log4j2依赖包导入什么的这里就不说了,直接上配置和代码。 ...实际开发项目中有时候需要将某些信息单独输出到一个文件以做分析,为了让日志信息更清晰,这时就可以用到log4j2的自定义日志级别输出到独立的文件中。
log4j2依赖包导入什么的这里就不说了,直接上配置和代码。
因为项目在线上使用的是apollo自动化配置,而线上apollo配置文件用的是properties格式,所以这里我没有用xml格式配置。xml方式的配置百度一下有很多,也是官方推荐的配置方式,我这里就不写了。
1、配置属性文件 log4j2.properties
# 根记录器,所有记录器的父辈 rootLogger.level = info rootLogger.type = AsyncRoot #文件路径 property.filePath = /Users/apple/ane/logs/${appName} property.filePattern = %d{yyyy-MM-dd}_%i property.appName = app1 #输出格式 property.layoutPattern = %level|${appName}|%d{yyyy-MM-dd HH:mm:ss}|%t|%logger{36}|%m%n property.layoutPatternC = %level|${appName}|%d{yyyy-MM-dd HH:mm:ss}|%t|%logger{36}|%m%n # 级别过滤(过滤日志记录) #filters = threshold filter.threshold.type = ThresholdFilter # 只记录debug级别以上的日志,大小写无关:(ALL<)TRACE<DEBUG<INFO<WARN<ERROR<FATAL(<OFF) filter.threshold.level = trace appender.console.type = Console appender.console.name = STDOUT appender.console.target = SYSTEM_OUT appender.console.layout.type = PatternLayout appender.console.layout.pattern = ${layoutPatternC} rootLogger.appenderRef.stdout.ref = STDOUT #自定义日志配置CUSTOM #level值 customLevel.CUSTOM = 50 rootLogger.appenderRef.CUSTOM.ref = CustomRollingFile appender.CUSTOM.fileName = ${filePath}/custom/custom.log appender.CUSTOM.filePattern = ${filePath}/custom/custom_${filePattern}.log #日志文件类型:文件大小滚动到设定大小自动生成一个指定格式名称的文件 appender.CUSTOM.type = RollingFile appender.CUSTOM.name = CustomRollingFile appender.CUSTOM.layout.type = PatternLayout #日志输出格式 appender.CUSTOM.layout.pattern = %m%n appender.CUSTOM.policies.type = Policies appender.CUSTOM.policies.time.type = TimeBasedTriggeringPolicy appender.CUSTOM.policies.time.interval = 1 appender.CUSTOM.policies.time.modulate = true #日志文件大小限制10M appender.CUSTOM.policies.size.type = SizeBasedTriggeringPolicy appender.CUSTOM.policies.size.size = 10M appender.CUSTOM.policies.start.type = OnStartupTriggeringPolicy appender.CUSTOM.strategy.type = DefaultRolloverStrategy appender.CUSTOM.strategy.fileIndex = nomax #删除规则设置,超过一天的文件会被删除 appender.CUSTOM.strategy.delete.type = Delete appender.CUSTOM.strategy.delete.basePath = ${filePath}/custom/ appender.CUSTOM.strategy.delete.maxDepth = 1 appender.CUSTOM.strategy.delete.iffilename.type = IfFileName appender.CUSTOM.strategy.delete.iffilename.glob = custom_*.log appender.CUSTOM.strategy.delete.iffilename.iflastmodified.type = IfLastModified appender.CUSTOM.strategy.delete.iffilename.iflastmodified.age = 1d #日志级别匹配,只有CUSTOM级别的日志信息才会写入到文件 appender.CUSTOM.filter.levelRange.type = LevelRangeFilter appender.CUSTOM.filter.levelRange.minLevel = CUSTOM appender.CUSTOM.filter.levelRange.maxLevel = CUSTOM appender.CUSTOM.filter.levelRange.onMatch = ACCEPT appender.CUSTOM.filter.levelRange.onMismatch = DENY
这里还只是一个自定义级别的,如果我要配置多个自定义级别怎么办了?
不慌,喝口水,来,看配置
# 根记录器,所有记录器的父辈 rootLogger.level = info rootLogger.type = AsyncRoot #文件路径 property.filePath = /Users/apple/ane/logs/${appName} property.filePattern = %d{yyyy-MM-dd}_%i property.appName = app2 #输出格式 property.layoutPattern = %level|${appName}|%d{yyyy-MM-dd HH:mm:ss}|%t|%logger{36}|%m%n property.layoutPatternC = %level|${appName}|%d{yyyy-MM-dd HH:mm:ss}|%t|%logger{36}|%m%n # 级别过滤(过滤日志记录) #filters = threshold filter.threshold.type = ThresholdFilter # 只记录debug级别以上的日志,大小写无关:(ALL<)TRACE<DEBUG<INFO<WARN<ERROR<FATAL(<OFF) filter.threshold.level = trace appender.console.type = Console appender.console.name = STDOUT appender.console.target = SYSTEM_OUT appender.console.layout.type = PatternLayout appender.console.layout.pattern = ${layoutPatternC} rootLogger.appenderRef.stdout.ref = STDOUT #自定义日志配置CUSTOM_ADD customLevel.CUSTOM_ADD = 70 rootLogger.appenderRef.CUSTOM_ADD.ref = CustomAddRollingFile appender.CUSTOM_ADD.fileName = ${filePath}/custom/custom_add.log appender.CUSTOM_ADD.filePattern = ${filePath}/custom/custom_add_${filePattern}.log appender.CUSTOM_ADD.type = RollingFile appender.CUSTOM_ADD.name = CustomAddRollingFile appender.CUSTOM_ADD.layout.type = PatternLayout appender.CUSTOM_ADD.layout.pattern = %m%n appender.CUSTOM_ADD.policies.type = Policies appender.CUSTOM_ADD.policies.time.type = TimeBasedTriggeringPolicy appender.CUSTOM_ADD.policies.time.interval = 1 appender.CUSTOM_ADD.policies.time.modulate = true appender.CUSTOM_ADD.policies.size.type = SizeBasedTriggeringPolicy appender.CUSTOM_ADD.policies.size.size = 10M appender.CUSTOM_ADD.policies.start.type = OnStartupTriggeringPolicy appender.CUSTOM_ADD.strategy.type = DefaultRolloverStrategy appender.CUSTOM_ADD.strategy.fileIndex = nomax appender.CUSTOM_ADD.strategy.delete.type = Delete appender.CUSTOM_ADD.strategy.delete.basePath = ${filePath}/custom/ appender.CUSTOM_ADD.strategy.delete.maxDepth = 1 appender.CUSTOM_ADD.strategy.delete.iffilename.type = IfFileName appender.CUSTOM_ADD.strategy.delete.iffilename.glob = custom_add_*.log appender.CUSTOM_ADD.strategy.delete.iffilename.iflastmodified.type = IfLastModified appender.CUSTOM_ADD.strategy.delete.iffilename.iflastmodified.age = 1d appender.CUSTOM_ADD.filter.levelRange.type = LevelRangeFilter appender.CUSTOM_ADD.filter.levelRange.minLevel = CUSTOM_ADD appender.CUSTOM_ADD.filter.levelRange.maxLevel = CUSTOM_ADD appender.CUSTOM_ADD.filter.levelRange.onMatch = ACCEPT appender.CUSTOM_ADD.filter.levelRange.onMismatch = DENY #自定义日志配置CUSTOM_UPT customLevel.CUSTOM_UPT = 60 rootLogger.appenderRef.CUSTOM_UPT.ref = CustomUptRollingFile appender.CUSTOM_UPT.fileName = ${filePath}/custom/custom_upt.log appender.CUSTOM_UPT.filePattern = ${filePath}/custom/custom_upt_${filePattern}.log appender.CUSTOM_UPT.type = RollingFile appender.CUSTOM_UPT.name = CustomUptRollingFile appender.CUSTOM_UPT.layout.type = PatternLayout appender.CUSTOM_UPT.layout.pattern = %m%n appender.CUSTOM_UPT.policies.type = Policies appender.CUSTOM_UPT.policies.time.type = TimeBasedTriggeringPolicy appender.CUSTOM_UPT.policies.time.interval = 1 appender.CUSTOM_UPT.policies.time.modulate = true appender.CUSTOM_UPT.policies.size.type = SizeBasedTriggeringPolicy appender.CUSTOM_UPT.policies.size.size = 10M appender.CUSTOM_UPT.strategy.type = DefaultRolloverStrategy appender.CUSTOM_UPT.strategy.fileIndex = nomax appender.CUSTOM_UPT.strategy.delete.type = Delete appender.CUSTOM_UPT.strategy.delete.basePath = ${filePath}/custom/ appender.CUSTOM_UPT.strategy.delete.maxDepth = 1 appender.CUSTOM_UPT.strategy.delete.iffilename.type = IfFileName appender.CUSTOM_UPT.strategy.delete.iffilename.glob = custom_upt_*.log appender.CUSTOM_UPT.strategy.delete.iffilename.iflastmodified.type = IfLastModified appender.CUSTOM_UPT.strategy.delete.iffilename.iflastmodified.age = 1d appender.CUSTOM_UPT.filter.levelRange.type = LevelRangeFilter appender.CUSTOM_UPT.filter.levelRange.minLevel = CUSTOM_UPT appender.CUSTOM_UPT.filter.levelRange.maxLevel = CUSTOM_UPT appender.CUSTOM_UPT.filter.levelRange.onMatch = ACCEPT appender.CUSTOM_UPT.filter.levelRange.onMismatch = DENY #自定义日志配置CUSTOM_DEL customLevel.CUSTOM_DEL = 50 rootLogger.appenderRef.CUSTOM_DEL.ref = CustomDelRollingFile appender.CUSTOM_DEL.fileName = ${filePath}/custom/custom_del.log appender.CUSTOM_DEL.filePattern = ${filePath}/custom/custom_del_${filePattern}.log appender.CUSTOM_DEL.type = RollingFile appender.CUSTOM_DEL.name = CustomDelRollingFile appender.CUSTOM_DEL.layout.type = PatternLayout appender.CUSTOM_DEL.layout.pattern = %m%n appender.CUSTOM_DEL.policies.type = Policies appender.CUSTOM_DEL.policies.time.type = TimeBasedTriggeringPolicy appender.CUSTOM_DEL.policies.time.interval = 1 appender.CUSTOM_DEL.policies.time.modulate = true appender.CUSTOM_DEL.policies.size.type = SizeBasedTriggeringPolicy appender.CUSTOM_DEL.policies.size.size = 10M appender.CUSTOM_DEL.strategy.type = DefaultRolloverStrategy appender.CUSTOM_DEL.strategy.fileIndex = nomax appender.CUSTOM_DEL.strategy.delete.type = Delete appender.CUSTOM_DEL.strategy.delete.basePath = ${filePath}/custom/ appender.CUSTOM_DEL.strategy.delete.maxDepth = 1 appender.CUSTOM_DEL.strategy.delete.iffilename.type = IfFileName appender.CUSTOM_DEL.strategy.delete.iffilename.glob = custom_del_*.log appender.CUSTOM_DEL.strategy.delete.iffilename.iflastmodified.type = IfLastModified appender.CUSTOM_DEL.strategy.delete.iffilename.iflastmodified.age = 1d appender.CUSTOM_DEL.filter.levelRange.type = LevelRangeFilter appender.CUSTOM_DEL.filter.levelRange.minLevel = CUSTOM_DEL appender.CUSTOM_DEL.filter.levelRange.maxLevel = CUSTOM_DEL appender.CUSTOM_DEL.filter.levelRange.onMatch = ACCEPT appender.CUSTOM_DEL.filter.levelRange.onMismatch = DENY
多个自定义级别的配置我也是研究了很久才成功,不管是log4j2官网还是百度都没有找到相应的properties配置,只能自己一个一个属性去试,还好最终成功配置好了。
2、创建一个日志工具类 CustomLogUtil
import org.apache.logging.log4j.Level; import org.apache.logging.log4j.LogManager; import org.apache.logging.log4j.Logger; import java.util.List; public class CustomLogUtil { private static Logger logger = LogManager.getLogger(CustomLogUtil.class); public final static Level CUSTOM_LEVEL = Level.forName("CUSTOM",50); /** * 自定义级别日志打印 * @param logs */ public static void printCustomLog(String logs){ logger.log(CUSTOM_LEVEL, logs); } public static void printCustomLog(Object obj){ logger.log(CUSTOM_LEVEL, JacksonUtil.writeValueWithSplitString(obj, c)); } }
JacksonUtil.writeValueSplitString()方法是我自定义的方法,用来把对象转成我要的json格式。你们直接用alibaba的json工具包就行了。
有多个自定义级别的话就创建多个Level对象,注意级别名和级别值不要一样
public final static Level CUSTOM_ADD_LEVEL = Level.forName("CUSTOM_ADD",70); public final static Level CUSTOM_UPT_LEVEL = Level.forName("CUSTOM_UPT",60); public final static Level CUSTOM_DEL_LEVEL = Level.forName("CUSTOM_DEL",50);
3、使用
在要输出日志的地方直接通过下面的方式调用就行了
CustomLogUtil.printCustomLog("我是自定义级别日志");
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Log4j自定义日志级别
2020-07-12 17:51:12Log4j 1.2.8 自定义日志级别目的实现自定义日志级别类log4j.xml配置文件执行结果结构分析流程综述主要代码 目的 由于要实现需求:将特定的跟踪日志写入单独的日志文件,且其他的日志输出不受影响。故需要实现一个...目的
由于要实现需求:将特定的跟踪日志写入单独的日志文件,且其他的日志输出不受影响。故需要实现一个自定义的日志级别并指定配置文件,将特定的日志信息输入特定文件。
实现
本代码基于log4j 1.2.8,并调试成功。配置文件基于log4j.xml
自定义日志级别类
package com.example.log4j.level; import org.apache.log4j.Level; public class MyLevel extends Level { public final static int TRACE_INT = 9000; /** * The <code>TRACE</code> Level designates fine-grained * informational events that are most useful to trace an * application. */ final static public Level TRACE = new MyLevel(TRACE_INT, "TRACE", 7); /** * Instantiate a level object. * * @param level * @param levelStr * @param syslogEquivalent */ protected MyLevel(int level, String levelStr, int syslogEquivalent) { super(level, levelStr, syslogEquivalent); } /** * Convert the string passed as argument to a level. If the * conversion fails, then this method returns {@link #DEBUG}. */ public static Level toLevel(String sArg) { return (Level) toLevel(sArg, Level.DEBUG); } /** * Convert an integer passed as argument to a level. If the * conversion fails, then this method returns {@link #DEBUG}. */ public static Level toLevel(int val) { return (Level) toLevel(val, Level.DEBUG); } /** * Convert an integer passed as argument to a level. If the * conversion fails, then this method returns the specified default. */ public static Level toLevel(int val, Level defaultLevel) { switch (val) { case ALL_INT: return ALL; case TRACE_INT: return MyLevel.TRACE; case DEBUG_INT: return Level.DEBUG; case INFO_INT: return Level.INFO; case WARN_INT: return Level.WARN; case ERROR_INT: return Level.ERROR; case FATAL_INT: return Level.FATAL; case OFF_INT: return OFF; default: return defaultLevel; } } /** * Convert the string passed as argument to a level. If the * conversion fails, then this method returns the value of * <code>defaultLevel</code>. */ public static Level toLevel(String sArg, Level defaultLevel) { if (sArg == null) return defaultLevel; String s = sArg.toUpperCase(); if (s.equals("ALL")) return Level.ALL; if (s.equals("TRACE")) return MyLevel.TRACE; if (s.equals("DEBUG")) return Level.DEBUG; //if(s.equals("FINE")) return Level.FINE; if (s.equals("INFO")) return Level.INFO; if (s.equals("WARN")) return Level.WARN; if (s.equals("ERROR")) return Level.ERROR; if (s.equals("FATAL")) return Level.FATAL; if (s.equals("OFF")) return Level.OFF; return defaultLevel; } }
log4j.xml配置文件
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE log4j:configuration PUBLIC "-//log4j/log4j Configuration//EN" "log4j.dtd"> <log4j:configuration> <!-- 将日志信息输出到控制台 --> <appender name="ConsoleAppender" class="org.apache.log4j.ConsoleAppender"> <!-- 设置日志输出的样式 --> <layout class="org.apache.log4j.PatternLayout"> <!-- 设置日志输出的格式 --> <param name="ConversionPattern" value="[%d{yyyy-MM-dd HH:mm:ss:SSS}] [%-5p] [method:%l] - %m%n" /> </layout> <!--过滤器设置输出的级别--> <filter class="org.apache.log4j.varia.LevelRangeFilter"> <!-- 设置日志输出的最小级别 --> <param name="levelMin" value="TRACE#com.example.log4j.level.MyLevel" /> <!-- 设置日志输出的最大级别 --> <param name="levelMax" value="TRACE#com.example.log4j.level.MyLevel" /> <!-- 设置日志输出的标志,true则直接输出,false则继续执行下一个过滤器。默认是false --> <param name="AcceptOnMatch" value="true" /> </filter> </appender> <root> <level value="TRACE" class="com.example.log4j.level.MyLevel" /> <appender-ref ref="ConsoleAppender"/> </root> </log4j:configuration>
执行结果
测试类
package com.example.log4j; import com.example.log4j.level.MyLevel; import org.apache.log4j.Level; import org.apache.log4j.Logger; import org.junit.jupiter.api.Test; import org.springframework.boot.test.context.SpringBootTest; @SpringBootTest class Log4jApplicationTests { private static Logger logger = Logger.getLogger(Log4jApplicationTests.class); @Test void contextLoads() { } @Test void testLog(){ logger.log(MyLevel.TRACE, "logger TRACE!"); logger.log(Level.DEBUG,"logger DEBUG!"); logger.log(Level.INFO,"logger INFO!"); logger.log(Level.WARN,"logger WARN!"); logger.log(Level.ERROR,"logger ERROR!"); } }
控制台
[2020-07-12 15:08:16:089] [TRACE] [method:com.example.log4j.Log4jApplicationTests.testLog(Log4jApplicationTests.java:20)] - logger TRACE!
结构分析
流程综述
主要代码
OptionConverter类为过滤器LevelRangeFilter注入过滤日志最大、最小等级。配置中使用#分割,#前为自定义日志级别,#后为自定日志级别类。
<filter class="org.apache.log4j.varia.LevelRangeFilter"> <!-- 设置日志输出的最小级别 --> <param name="levelMin" value="TRACE#com.example.log4j.level.MyLevel" /> <!-- 设置日志输出的最大级别 --> <param name="levelMax" value="TRACE#com.example.log4j.level.MyLevel" /> <!-- 设置日志输出的标志,true则直接输出,false则继续执行下一个过滤器。默认是false --> <param name="AcceptOnMatch" value="true" /> </filter>
根据配置生成自定义Level对象。
/** Converts a standard or custom priority level to a Level object. <p> If <code>value</code> is of form "level#classname", then the specified class' toLevel method is called to process the specified level string; if no '#' character is present, then the default {@link org.apache.log4j.Level} class is used to process the level value. <p>As a special case, if the <code>value</code> parameter is equal to the string "NULL", then the value <code>null</code> will be returned. <p> If any error occurs while converting the value to a level, the <code>defaultValue</code> parameter, which may be <code>null</code>, is returned. <p> Case of <code>value</code> is insignificant for the level level, but is significant for the class name part, if present. @since 1.1 */ public static Level toLevel(String value, Level defaultValue) { if(value == null) return defaultValue; int hashIndex = value.indexOf('#'); if (hashIndex == -1) { if("NULL".equalsIgnoreCase(value)) { return null; } else { // no class name specified : use standard Level class return(Level) Level.toLevel(value, defaultValue); } } Level result = defaultValue; String clazz = value.substring(hashIndex+1); String levelName = value.substring(0, hashIndex); // This is degenerate case but you never know. if("NULL".equalsIgnoreCase(levelName)) { return null; } LogLog.debug("toLevel" + ":class=[" + clazz + "]" + ":pri=[" + levelName + "]"); try { Class customLevel = Loader.loadClass(clazz); // get a ref to the specified class' static method // toLevel(String, org.apache.log4j.Level) Class[] paramTypes = new Class[] { String.class, org.apache.log4j.Level.class }; java.lang.reflect.Method toLevelMethod = customLevel.getMethod("toLevel", paramTypes); // now call the toLevel method, passing level string + default Object[] params = new Object[] {levelName, defaultValue}; Object o = toLevelMethod.invoke(null, params); result = (Level) o; } catch(ClassNotFoundException e) { LogLog.warn("custom level class [" + clazz + "] not found."); } catch(NoSuchMethodException e) { LogLog.warn("custom level class [" + clazz + "]" + " does not have a constructor which takes one string parameter", e); } catch(java.lang.reflect.InvocationTargetException e) { LogLog.warn("custom level class [" + clazz + "]" + " could not be instantiated", e); } catch(ClassCastException e) { LogLog.warn("class [" + clazz + "] is not a subclass of org.apache.log4j.Level", e); } catch(IllegalAccessException e) { LogLog.warn("class ["+clazz+ "] cannot be instantiated due to access restrictions", e); } catch(Exception e) { LogLog.warn("class ["+clazz+"], level ["+levelName+ "] conversion failed.", e); } return result; }
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