1， 去掉默認日志，以便切換到log4j2的日志依賴

2， 然后添加如下兩個日志依賴

2， 配置文件內容

<!-- 配置 log4j2 --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-log4j2</artifactId></dependency><!-- 加上這個才能辨認到log4j2.yml文件 --><dependency><groupId>com.fasterxml.jackson.dataformat</groupId><artifactId>jackson-dataformat-yaml</artifactId></dependency>三，在工程根目錄下添加 lo4g2.yml 配置文件

1， 文件存放位置

2， 配置文件內容

# 共有8個級別，按照從低到高為：ALL < TRACE < DEBUG < INFO < WARN < ERROR < FATAL < OFF。Configuration: status: warn monitorInterval: 30 Properties: # 定義全局變量 Property: # 缺省配置（用于開發環境）。其他環境需要在VM參數中指定，如下： #測試：-Dlog.level.console=warn -Dlog.level.xjj=trace #生產：-Dlog.level.console=warn -Dlog.level.xjj=info - name: log.level.console value: info - name: log.path value: log - name: project.name value: opendoc - name: log.pattern value: '%d{yyyy-MM-dd HH:mm:ss.SSS} -%5p ${PID:-} [%15.15t] %-30.30C{1.} : %m%n' Appenders: Console: #輸出到控制臺 name: CONSOLE target: SYSTEM_OUT PatternLayout: pattern: ${log.pattern}# 啟動日志 RollingFile: - name: ROLLING_FILE fileName: ${log.path}/${project.name}.log filePattern: '${log.path}/historyRunLog/$${date:yyyy-MM}/${project.name}-%d{yyyy-MM-dd}-%i.log.gz' PatternLayout: pattern: ${log.pattern} Filters:# 一定要先去除不接受的日志級別，然后獲取需要接受的日志級別 ThresholdFilter: - level: error onMatch: DENY onMismatch: NEUTRAL - level: info onMatch: ACCEPT onMismatch: DENY Policies: TimeBasedTriggeringPolicy: # 按天分類 modulate: true interval: 1 DefaultRolloverStrategy: # 文件最多100個 max: 100# 平臺日志 - name: PLATFORM_ROLLING_FILE ignoreExceptions: false fileName: ${log.path}/platform/${project.name}_platform.log filePattern: '${log.path}/platform/$${date:yyyy-MM}/${project.name}-%d{yyyy-MM-dd}-%i.log.gz' PatternLayout: pattern: ${log.pattern} Policies: TimeBasedTriggeringPolicy: # 按天分類 modulate: true interval: 1 DefaultRolloverStrategy: # 文件最多100個 max: 100# 業務日志 - name: BUSSINESS_ROLLING_FILE ignoreExceptions: false fileName: ${log.path}/bussiness/${project.name}_bussiness.log filePattern: '${log.path}/bussiness/$${date:yyyy-MM}/${project.name}-%d{yyyy-MM-dd}-%i.log.gz' PatternLayout: pattern: ${log.pattern} Policies: TimeBasedTriggeringPolicy: # 按天分類 modulate: true interval: 1 DefaultRolloverStrategy: # 文件最多100個 max: 100# 錯誤日志 - name: EXCEPTION_ROLLING_FILE ignoreExceptions: false fileName: ${log.path}/exception/${project.name}_exception.log filePattern: '${log.path}/exception/$${date:yyyy-MM}/${project.name}-%d{yyyy-MM-dd}-%i.log.gz' ThresholdFilter: level: error onMatch: ACCEPT onMismatch: DENY PatternLayout: pattern: ${log.pattern} Policies: TimeBasedTriggeringPolicy: # 按天分類 modulate: true interval: 1 DefaultRolloverStrategy: # 文件最多100個 max: 100# DB 日志 - name: DB_ROLLING_FILE ignoreExceptions: false fileName: ${log.path}/db/${project.name}_db.log filePattern: '${log.path}/db/$${date:yyyy-MM}/${project.name}-%d{yyyy-MM-dd}-%i.log.gz' PatternLayout: pattern: ${log.pattern} Policies: TimeBasedTriggeringPolicy: # 按天分類 modulate: true interval: 1 DefaultRolloverStrategy: # 文件最多100個 max: 100 Loggers: Root: level: info AppenderRef: - ref: CONSOLE - ref: ROLLING_FILE - ref: EXCEPTION_ROLLING_FILE Logger: - name: platform level: info additivity: false AppenderRef: - ref: CONSOLE - ref: PLATFORM_ROLLING_FILE - name: bussiness level: info additivity: false AppenderRef: - ref: BUSSINESS_ROLLING_FILE - name: exception level: debug additivity: true AppenderRef: - ref: EXCEPTION_ROLLING_FILE - name: db level: info additivity: false AppenderRef: - ref: DB_ROLLING_FILE# 監聽具體包下面的日志# Logger: # 為com.xjj包配置特殊的Log級別，方便調試# - name: com.xjj# additivity: false# level: ${sys:log.level.xjj}# AppenderRef:# - ref: CONSOLE# - ref: ROLLING_FILE

3， 在application.yml引入log4j2.yml

package com.tcs.irecr.util;import org.slf4j.Logger;import org.slf4j.LoggerFactory;/*** 本地日志參考類 *@author Administrator **/public class LogUtils {//* 獲取業務日志logger}public static Logger getBussinessLogger() {return LoggerFactory.getLogger(LogEnum.BUSSINESS.getCategory());}//獲取平臺日志loggerpublic static Logger getPlatformLogger() {return LoggerFactory.getLogger(LogEnum.PLATFORM.getCategory());}//獲取數據庫日志loggerpublic static Logger getDBLogger() {return LoggerFactory.getLogger(LogEnum.DB.getCategory());}//獲取異常日志loggerpublic static Logger getExceptionLogger() {return LoggerFactory.getLogger(LogEnum.EXCEPTION.getCategory());}六， 運行時自動在工程目錄下生產日志目錄和日志文件

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