错误log4j:WARN No appenders could be found for logger (org.springframework.web.context.ContextLoader).
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1、在IDEA上重新部署服务。
按F4，页面最下面，“+”号，“Before lanch:Build Artifacts”加入后一直报log4j:WARN No appenders could be found for logger (org.springframework.web.context.ContextLoader).
log4j:WARN Please initialize the log4j system properly.错误，各种郁闷啊。
2、百度看一片博客里，解释如下：
错误信息 : log4j:WARN No appenders could be found for logger (org.springframework.web.context.ContextLoader).
log4j:WARN Please initialize the log4j system properly.
解决方法 : 在WEB-INF/classes/路径下加上文件 log4j.properties 其参考内容如下
# Set root logger level to error
log4j.rootLogger=INFO, Console, Fil
，于是重新，点Build---- Build Artifact，生成成功，启动服务器后，显示正常，不再报错。
另一感悟：
利用spring注解形式注入时候，如果注入类一直，名一定要一致。不能不同文件中引用时，起不同名字
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- 错误log4j:WARN No appenders could be found for logger (org.springframework.web.context.ContextLoader).
- log4j:WARN No appenders could be found for logger (org.springframework.web.context.ContextLoader).
- log4j:WARN No appenders could be found for logger (org.springframework.web.context.ContextLoader).
- log4j:WARN No appenders could be found for logger (org.springframework.web.context.ContextLoader).
- log4j:WARN No appenders could be found for logger (org.springframework.web.context.ContextLoader). l
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