Springboot logback-spring.xml无法加载

现象

SpringBoot项目，启动后，日志文件没有出现在logback-spring.xml指定的目录下

且启动日志开头如下：

“C:Program FilesJavajdk1.8.0_144binjava”…
Connected to the target VM, address: ‘127.0.0.1:52494’, transport: ‘socket’
18:34:58,011 |-INFO in ch.qos.logback.classic.LoggerContext[default] – Could NOT find resource [logback-test.xml]
18:34:58,011 |-INFO in ch.qos.logback.classic.LoggerContext[default] – Could NOT find resource [logback.groovy]
18:34:58,011 |-INFO in ch.qos.logback.classic.LoggerContext[default] – Found resource [logback.xml] at [jar:file:/D:/mvn_repo/xxx-1.0.2.jar!/logback.xml]
18:34:58,014 |-INFO in ch.qos.logback.core.joran.spi.ConfigurationWatchList@707194ba – URL [jar:file:/D:/mvn_repo/yyy-1.0.2.jar!/logback.xml] is not of type file
18:34:58,112 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction – Will scan for changes in [jar:file:/D:/mvn_repo/zzz-1.0.2.jar!/logback.xml] 

logback-spring.xml文件一直未改动过，如下：

 %d{yyyy-MM-dd HH:mm:ss.SSS} %-5level [%thread] %logger{36} %line - %msg%n${logPath}/server.%d.log %d{yyyy-MM-dd HH:mm:ss.SSS} %-5level [%thread] %logger{36} %line - %msg%nUTF-8ERRORACCEPTDENY${logPath}/server.%d.error %d{yyyy-MM-dd HH:mm:ss.SSS} %-5level [%thread] %logger{36} %line - %msg%nUTF-8

原因分析

1.配置文件位置正确

classes/
├── application.properties
├── com
│   └── nero
│       └── test
│           ├── api
│           │   ├── Api.class

2.分析启动日志，分析可能是依赖的jar中有logback.xml配置，冲突导致的问题

解决方案

在application.properties中加入配置：

logging.config=classpath:logback-spring.xml

通过该配置，强制指定日志的配置文件，问题得以解决

springboot logback-spring.xml 配置, 使用不同配置文件中的配置

application.yml

spring:
  profiles:
    active: prod  # active 哪一个配置文件

application-dev.yml

logging:
  file:
    path: d:/var/log

application-prod.yml

logging:
  file:
    path: /var/log/question

logback-spring.xml

wechat-service${log.colorPattern}${log.path}/info/info.%d{yyyy-MM-dd}.log${log.maxHistory}${log.pattern}INFOACCEPTDENY${log.path}/error/error.%d{yyyy-MM-dd}.log${log.pattern}ERRORACCEPTDENY

从application-xxx.yml 中拿配置

总结

以上为个人经验，希望能给大家一个参考，也希望大家多多支持IT俱乐部。