一，Maven 依賴 pom.xml配置

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

二，在工程根目錄下添加 lo4g2.yml 配置文件

2， 配置文件內容

1. <!-- 配置 log4j2 -->
2. <dependency>
3. <groupId>org.springframework.boot</groupId>
4. <artifactId>spring-boot-starter-log4j2</artifactId>
5. </dependency>
6.  
7. <!-- 加上這個才能辨認到log4j2.yml文件 -->
8. <dependency>
9. <groupId>com.fasterxml.jackson.dataformat</groupId>
10. <artifactId>jackson-dataformat-yaml</artifactId>
11. </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

1. # 共有8個級別，按照從低到高為：ALL < TRACE < DEBUG < INFO < WARN < ERROR < FATAL < OFF。
2. Configuration:
3. status: warn
4. monitorInterval: 30
5. Properties: # 定義全局變量
6. 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：
7. #測試：-Dlog.level.console=warn -Dlog.level.xjj=trace
8. #生產：-Dlog.level.console=warn -Dlog.level.xjj=info
9. - name: log.level.console
10. value: info
11. - name: log.path
12. value: log
13. - name: project.name
14. value: opendoc
15. - name: log.pattern
16. value: "%d{yyyy-MM-dd HH:mm:ss.SSS} -%5p ${PID:-} [%15.15t] %-30.30C{1.} : %m%n"
17. Appenders:
18. Console: #輸出到控制臺
19. name: CONSOLE
20. target: SYSTEM_OUT
21. PatternLayout:
22. pattern: ${log.pattern}
23. # 啟動日志
24. RollingFile:
25. - name: ROLLING_FILE
26. fileName: ${log.path}/${project.name}.log
27. filePattern: "${log.path}/historyRunLog/$${date:yyyy-MM}/${project.name}-%d{yyyy-MM-dd}-%i.log.gz"
28. PatternLayout:
29. pattern: ${log.pattern}
30. Filters:
31. # 一定要先去除不接受的日志級別，然后獲取需要接受的日志級別
32. ThresholdFilter:
33. - level: error
34. onMatch: DENY
35. onMismatch: NEUTRAL
36. - level: info
37. onMatch: ACCEPT
38. onMismatch: DENY
39. Policies:
40. TimeBasedTriggeringPolicy: # 按天分類
41. modulate: true
42. interval: 1
43. DefaultRolloverStrategy: # 文件最多100個
44. max: 100
45. # 平臺日志
46. - name: PLATFORM_ROLLING_FILE
47. ignoreExceptions: false
48. fileName: ${log.path}/platform/${project.name}_platform.log
49. filePattern: "${log.path}/platform/$${date:yyyy-MM}/${project.name}-%d{yyyy-MM-dd}-%i.log.gz"
50. PatternLayout:
51. pattern: ${log.pattern}
52. Policies:
53. TimeBasedTriggeringPolicy: # 按天分類
54. modulate: true
55. interval: 1
56. DefaultRolloverStrategy: # 文件最多100個
57. max: 100
58. # 業務日志
59. - name: BUSSINESS_ROLLING_FILE
60. ignoreExceptions: false
61. fileName: ${log.path}/bussiness/${project.name}_bussiness.log
62. filePattern: "${log.path}/bussiness/$${date:yyyy-MM}/${project.name}-%d{yyyy-MM-dd}-%i.log.gz"
63. PatternLayout:
64. pattern: ${log.pattern}
65. Policies:
66. TimeBasedTriggeringPolicy: # 按天分類
67. modulate: true
68. interval: 1
69. DefaultRolloverStrategy: # 文件最多100個
70. max: 100
71. # 錯誤日志
72. - name: EXCEPTION_ROLLING_FILE
73. ignoreExceptions: false
74. fileName: ${log.path}/exception/${project.name}_exception.log
75. filePattern: "${log.path}/exception/$${date:yyyy-MM}/${project.name}-%d{yyyy-MM-dd}-%i.log.gz"
76. ThresholdFilter:
77. level: error
78. onMatch: ACCEPT
79. onMismatch: DENY
80. PatternLayout:
81. pattern: ${log.pattern}
82. Policies:
83. TimeBasedTriggeringPolicy: # 按天分類
84. modulate: true
85. interval: 1
86. DefaultRolloverStrategy: # 文件最多100個
87. max: 100
88. # DB 日志
89. - name: DB_ROLLING_FILE
90. ignoreExceptions: false
91. fileName: ${log.path}/db/${project.name}_db.log
92. filePattern: "${log.path}/db/$${date:yyyy-MM}/${project.name}-%d{yyyy-MM-dd}-%i.log.gz"
93. PatternLayout:
94. pattern: ${log.pattern}
95. Policies:
96. TimeBasedTriggeringPolicy: # 按天分類
97. modulate: true
98. interval: 1
99. DefaultRolloverStrategy: # 文件最多100個
100. max: 100
101. Loggers:
102. Root:
103. level: info
104. AppenderRef:
105. - ref: CONSOLE
106. - ref: ROLLING_FILE
107. - ref: EXCEPTION_ROLLING_FILE
108. Logger:
109. - name: platform
110. level: info
111. additivity: false
112. AppenderRef:
113. - ref: CONSOLE
114. - ref: PLATFORM_ROLLING_FILE
115. - name: bussiness
116. level: info
117. additivity: false
118. AppenderRef:
119. - ref: BUSSINESS_ROLLING_FILE
120. - name: exception
121. level: debug
122. additivity: true
123. AppenderRef:
124. - ref: EXCEPTION_ROLLING_FILE
125. - name: db
126. level: info
127. additivity: false
128. AppenderRef:
129. - ref: DB_ROLLING_FILE
130. # 監聽具體包下面的日志
131. # Logger: # 為com.xjj包配置特殊的Log級別，方便調試
132. # - name: com.xjj
133. # additivity: false
134. # level: ${sys:log.level.xjj}
135. # AppenderRef:
136. # - ref: CONSOLE
137. # - ref: ROLLING_FILE

3， 在application.yml引入log4j2.yml

四， 不同日志枚舉類

五， 不同日志工具類util編輯

1. package com.tcs.irecr.util;
2.  
3. import org.slf4j.Logger;
4.  
5. import org.slf4j.LoggerFactory;
6.  
7. /**
8.  
9. * 本地日志參考類 *
10.  
11. @author Administrator *
12.  
13. */
14.  
15. public class LogUtils {
16. //* 獲取業務日志logger
17.  
18. }
19.  
20. public static Logger getBussinessLogger() {
21. return LoggerFactory.getLogger(LogEnum.BUSSINESS.getCategory());
22.  
23. }
24.  
25. //獲取平臺日志logger
26.  
27. public static Logger getPlatformLogger() {
28. return LoggerFactory.getLogger(LogEnum.PLATFORM.getCategory());
29.  
30. }
31.  
32. //獲取數據庫日志logger
33.  
34. public static Logger getDBLogger() {
35. return LoggerFactory.getLogger(LogEnum.DB.getCategory());
36.  
37. }
38.  
39. //獲取異常日志logger
40.  
41. public static Logger getExceptionLogger() {
42. return LoggerFactory.getLogger(LogEnum.EXCEPTION.getCategory());
43.  
44. }

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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原文鏈接：https://blog.csdn.net/weixin_38319425/article/details/93646428