IntelliJ IDEA编译项目报错 "xxx包不存在" 或 "找不到符号"
https://www.cnblogs.com/han-1034683568/p/9540564.html
SLF4J: Failed to load class “org.slf4j.impl.StaticLoggerBinder”
https://stackoverflow.com/questions/7421612/slf4j-failed-to-load-class-org-slf4j-impl-staticloggerbinder
下载slf4j-simple-1.6.2.jar 修改xml
No appenders could be found for logger(log4j)?
在项目下resources里有log4j.properties 修改或者编辑
https://stackoverflow.com/questions/12532339/no-appenders-could-be-found-for-loggerlog4j