springboot日志的实现方式(两种log4j2.properties和log4j2.yml)

第一种：基于log4j2.properties

首先pom.xml中导入jar

		<dependency><groupId>org.slf4j</groupId><artifactId>slf4j-api</artifactId><version>1.7.21</version></dependency><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-log4j12</artifactId><version>1.7.21</version></dependency>

然后在src/main/resources目录下新建log4j2.properties，该日志文件可以实现，每天新建一个日志文件，前一天的日志以前一天的日期为结尾

### \u8BBE\u7F6E###
log4j.rootLogger = debug,stdout,D,E,I### \u8F93\u51FA\u4FE1\u606F\u5230\u63A7\u5236\u62AC ###
log4j.appender.stdout = org.apache.log4j.ConsoleAppender
log4j.appender.stdout.encoding=utf-8
log4j.appender.stdout.Target = System.out
log4j.appender.stdout.layout = org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern = %d{yyyy-MM-dd HH:mm:ss,SSS} %5p %c{1}:%L - %m%nlog4j.appender.D = org.apache.log4j.DailyRollingFileAppender
log4j.appender.D.File = D://logs/debug.log
log4j.appender.file.DatePattern='.'yyyy-MM-dd
log4j.appender.D.Append = true
log4j.appender.D.Threshold = DEBUG
log4j.appender.D.layout = org.apache.log4j.PatternLayout
log4j.appender.D.layout.ConversionPattern =%d{yyyy-MM-dd HH:mm:ss,SSS} %5p %c{1}:%L - %m%nlog4j.appender.E = org.apache.log4j.DailyRollingFileAppender
log4j.appender.E.File =D://logs/error.log
log4j.appender.file.DatePattern='.'yyyy-MM-dd
log4j.appender.E.Append = true
log4j.appender.E.Threshold = ERROR
log4j.appender.E.layout = org.apache.log4j.PatternLayout
log4j.appender.E.layout.ConversionPattern = %d{yyyy-MM-dd HH:mm:ss,SSS} %5p %c{1}:%L - %m%nlog4j.appender.I = org.apache.log4j.DailyRollingFileAppender
log4j.appender.I.File =D://logs/info.log
log4j.appender.file.DatePattern='.'yyyy-MM-dd
log4j.appender.I.Append = true
log4j.appender.I.Threshold = INFO
log4j.appender.I.layout = org.apache.log4j.PatternLayout
log4j.appender.I.layout.ConversionPattern = %d{yyyy-MM-dd HH:mm:ss,SSS} %5p %c{1}:%L - %m%n

第二种方式：基于log4j2.yml配置文件

首先pom.xml中导入jar

 <dependency> <!-- exclude掉spring-boot的默认log配置 --><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter</artifactId><exclusions><exclusion><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-logging</artifactId></exclusion></exclusions></dependency><!-- 引入log4j2依赖 --><!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-log4j2 --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-log4j2</artifactId><version>2.0.0.RELEASE</version></dependency><!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.dataformat/jackson-dataformat-yaml --><dependency><!-- 加上这个才能辨认到log4j2.yml文件 --><groupId>com.fasterxml.jackson.dataformat</groupId><artifactId>jackson-dataformat-yaml</artifactId></dependency>

然后在src/main/resources目录下新建log4j2.yml文件

# 共有8个级别，按照从低到高为：ALL < TRACE < DEBUG < INFO < WARN < ERROR < FATAL < OFF。
Configuration:  status: warn  monitorInterval: 30Properties: # 定义全局变量  Property: # 缺省配置（用于开发环境）。其他环境需要在VM参数中指定，如下：  #测试：-Dlog.level.console=warn -Dlog.level.xjj=trace  #生产：-Dlog.level.console=warn -Dlog.level.xjj=info        - name: log.level.console  value: debug  - name: log.sql.level  value: trace         - name: LOG_HOME  value: /bdmsweb-log/logs   Appenders:  Console:  #输出到控制台  name: CONSOLE  target: SYSTEM_OUT  ThresholdFilter:  level: ${sys:log.level.console} # “sys:”表示：如果VM参数中没指定这个变量值，则使用本文件中定义的缺省全局变量值  onMatch: ACCEPT  onMismatch: DENY  PatternLayout:  pattern: "%d{yyyy-MM-dd HH:mm:ss,SSS} %5p %c{1}:%L - %m%n"  RollingFile: # 输出到文件，超过128MB归档  - name: info    ignoreExceptions: false  fileName: ${LOG_HOME}/${date:yyyy-MM}/${date:yyyy-MM-dd}/info.log  filePattern: "${LOG_HOME}/${date:yyyy-MM}/info-%d{yyyy-MM-dd}-%i.log.gz"  ThresholdFilter:  level: infoonMatch: ACCEPT  onMismatch: DENY PatternLayout:  pattern: "%d{yyyy-MM-dd HH:mm:ss,SSS} %5p %c{1}:%L - %m%n"  Policies:  SizeBasedTriggeringPolicy:  size: "128 MB"  DefaultRolloverStrategy:  max: 1000  - name: debug   ignoreExceptions: false  fileName: ${LOG_HOME}/${date:yyyy-MM}/${date:yyyy-MM-dd}/debug.log  filePattern: "${LOG_HOME}/$${date:yyyy-MM}/debug-%d{yyyy-MM-dd}-%i.log.gz" ThresholdFilter:  level: debugonMatch: ACCEPT  onMismatch: DENY  PatternLayout:  pattern: "%d{yyyy-MM-dd HH:mm:ss,SSS} %5p %c{1}:%L - %m%n"  Policies:  SizeBasedTriggeringPolicy:  size: "128 MB"  DefaultRolloverStrategy:  max: 1000  - name: error  ignoreExceptions: false  fileName: ${LOG_HOME}/${date:yyyy-MM}/${date:yyyy-MM-dd}/error.log  filePattern: "${LOG_HOME}/$${date:yyyy-MM}/error-%d{yyyy-MM-dd}-%i.log.gz"  ThresholdFilter:  level: erroronMatch: ACCEPT  onMismatch: DENYPatternLayout:  pattern: "%d{yyyy-MM-dd HH:mm:ss,SSS} %5p %c{1}:%L - %m%n"  Policies:  SizeBasedTriggeringPolicy:  size: "128 MB"  DefaultRolloverStrategy:  max: 1000               Loggers:  Root:  level: info  AppenderRef:  - ref: CONSOLE- ref: info  - ref: debug  - ref: error  Logger: # 为com.xjj包配置特殊的Log级别，方便调试  - name: cnki.bdms.module.search.daladditivity: true  level: ${sys:log.sql.level}  AppenderRef:- ref: info    - ref: debug - ref: error - ref: CONSOLE