《Springboot极简教程》问题解决：Logging system failed to initialize using configuration from 'logback.xml 'Log

Logging system failed to initialize using configuration from 'logback.xml '

application.properties配置文件中value后面有空格。

logging.config=logback.xml

让人感到疑惑的是，SpringBoot居然没有对application.properties配置文件value末端作空格trim处理。