log4j2的一些描述

配置文件：

 

 加载对应配置文件log4j2-test.ymlConfiguration:

  status: info

  Properties:
    Property:
      -  name: log.pattern
         value: '%d{yyyy-MM-dd HH:mm:ss.SSS}{GMT+8} %X{log_trace_id} %highlight{%-5level} %location %logger{35}  %msg  %n{FATAL=red, ERROR=red, WARN=yellow, INFO=cyan, DEBUG=cyan,TRACE=blue}'
      -  name: log.path
         value: /jydata/log
      -  name: application.name
         value: eureka注册对应服务名称
  Appenders:
    Console:  #输出到控制台
      name: console
      target: SYSTEM_OUT
      ThresholdFilter:
        level: info
        onMatch: ACCEPT
        onMismatch: DENY
      PatternLayout:
        Pattern: ${log.pattern}
        disableAnsi: false

    Socket:
      name: logstash
      host: 10.0.17.40
      port: 5044
      protocol: TCP
      # 配置说明见： https://www.docs4dev.com/docs/zh/log4j2/2.x/all/manual-layouts.html
      JsonLayout:
        compact: true
        eventEol: true
        stacktraceAsString: true
        # 官网说明： 生成location information是一项昂贵的操作，可能会影响性能。请谨慎使用。
        locationInfo: true
        KeyValuePair:
          - key: service
            value: ${application.name}
          - key: trace
            value: $${ctx:log_trace_id}
          - key: sleuthTraceId
            value: $${ctx:X-B3-TraceId}
          - key: span
            value: $${ctx:X-B3-SpanId}
          - key: parentSpanId
            value: $${ctx:X-B3-ParentSpanId}
          - key: spanExport
            value: $${ctx:X-Span-Export}
          - key: logdate
            value: ${date:yyyy-MM-dd HH:mm:ss.SSS}
            # 待添加： docker部署使用
    #          - key: containerId
    #            value: ${docker:containerId}
    #          - key: containerName
    #            value: ${docker:containerName}
    #          - key: imageName
    #            value: ${docker:imageName}

    #   主日志
    RollingFile:
      - name: rollingFile
        fileName: ${log.path}/${application.name}.log
        filePattern: '${log.path}/history/$${date:yyyy-MM}/${application.name}-%d{yyyy-MM-dd}.log'
        PatternLayout:
          Pattern: ${log.pattern}
        Filters:
          ThresholdFilter:
            - level: error
              onMatch: DENY
              onMismatch: NEUTRAL
            - level: info
              onMatch: ACCEPT
              onMismatch: DENY
        Policies:
          TimeBasedTriggeringPolicy:  # 按天分类
            modulate: true
            interval: 1
        DefaultRolloverStrategy:     # 文件最多100个
          max: 100

      #   系统间交互日志
      - name: transRollingFile
        ignoreExceptions: false
        fileName: ${log.path}/trans/${application.name}-trans.log
        filePattern: "${log.path}/trans/$${date:yyyy-MM}/${application.name}-%d{yyyy-MM-dd}.log"
        JsonLayout:
          compact: true
          eventEol: true
          stacktraceAsString: true
          # 官网说明： 生成location information是一项昂贵的操作，可能会影响性能。请谨慎使用。
          locationInfo: true
          KeyValuePair:
            - key: service
              value: ${application.name}
            - key: trace
              value: $${ctx:log_trace_id}
            - key: logdate
              value: ${date:yyyy-MM-dd HH:mm:ss.SSS}
        Policies:
          TimeBasedTriggeringPolicy:  # 按天分类
            modulate: true
            interval: 1
        DefaultRolloverStrategy:     # 文件最多100个
          max: 100

      #   feign trans 服务间交互日志
      - name: feignRollingFile
        ignoreExceptions: false
        fileName: ${log.path}/feign/${application.name}-feign.log
        filePattern: "${log.path}/feign/$${date:yyyy-MM}/${application.name}-%d{yyyy-MM-dd}.log"
        JsonLayout:
          compact: true
          eventEol: true
          stacktraceAsString: true
          # 官网说明： 生成location information是一项昂贵的操作，可能会影响性能。请谨慎使用。
          locationInfo: true
          KeyValuePair:
            - key: service
              value: ${application.name}
            - key: trace
              value: $${ctx:log_trace_id}
            - key: logdate
              value: ${date:yyyy-MM-dd HH:mm:ss.SSS}
        Policies:
          TimeBasedTriggeringPolicy:  # 按天分类
            modulate: true
            interval: 1
        DefaultRolloverStrategy:     # 文件最多100个
          max: 100

      #   错误日志
      - name: errorRollingFile
        ignoreExceptions: false
        fileName: ${log.path}/error/${application.name}-error.log
        filePattern: "${log.path}/error/$${date:yyyy-MM}/${application.name}-%d{yyyy-MM-dd}.log"
        ThresholdFilter:
          level: error
          onMatch: ACCEPT
          onMismatch: DENY
        PatternLayout:
          Pattern: ${log.pattern}
        Policies:
          TimeBasedTriggeringPolicy:  # 按天分类
            modulate: true
            interval: 1
        DefaultRolloverStrategy:     # 文件最多100个
          max: 100

    Async:
      - name: asyncRollingFile
        includeLocation: true
        AppenderRef:
          ref: rollingFile

      - name: asyncFeignRollingFile
        includeLocation: true
        AppenderRef:
          ref: feignRollingFile

      - name: asyncTransRollingFile
        includeLocation: true
        AppenderRef:
          ref: transRollingFile

      - name: asyncErrorRollingFile
        includeLocation: true
        AppenderRef:
          ref: errorRollingFile

  Loggers:
    Root:
      level: info
      AppenderRef:
        - ref: console
        - ref: logstash
        - ref: asyncRollingFile
        - ref: asyncErrorRollingFile

    Logger:
      - name: trans
        level: info
        additivity: false
        AppenderRef:
          - ref: logstash
          - ref: console
          - ref: asyncTransRollingFile

      - name: feign
        level: info
        additivity: false
        AppenderRef:
          - ref: logstash
          - ref: console
          - ref: asyncFeignRollingFile

对应pom需添加依赖：

<!-- 加上这个才能辨认到log4j2.yml文件 -->
<dependency>
    <groupId>com.fasterxml.jackson.dataformat</groupId>
    <artifactId>jackson-dataformat-yaml</artifactId>
</dependency>
<!-- logstash.logback -->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter</artifactId>
    <exclusions>

　　　　  <!-- 需排除springboot默认使用日志 -->

        <exclusion>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-logging</artifactId>
        </exclusion>
    </exclusions>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-log4j2</artifactId>
    <version>2.4.1</version>
</dependency>