log4j:WARN No appenders could be found for logger (org.springframework.web.context.ContextLoader).警告

运行web项目出现如下警告：

log4j:WARN No appenders could be found for logger (org.springframework.web.context.ContextLoader).

log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.

原因：在加载spring的contextLoader时没有找到log4j。

解决：

• web.xml 里面 没有配置log4j  （在 web.xml 添加如下代码）
  

<!-- log4g日志配置 -->
<context-param>
<param-name>log4jConfigLocation</param-name>
<param-value>classpath:log4j.properties</param-value>
</context-param>
<listener>
<description>log4g日志加载</description>
<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
</listener>

• web.xml 配置了，但还是存在上述警告（就是把spring的配置contextConfigLocation放在log4j配置之后）

<!-- log4g日志配置 -->
<context-param>
<param-name>log4jConfigLocation</param-name>
<param-value>classpath:log4j.properties</param-value>
</context-param>
<listener>
<description>log4g日志加载</description>
<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
</listener>
<!-- 加载spring的xml配置文件到 spring的上下文容器中 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-*.xml</param-value>
</context-param>

附上 log4j.properties

log4j.rootLogger=info,CONSOLE,A
log4j.addivity.org.apache=false

log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.Threshold=DEBUG
log4j.appender.CONSOLE.layout.ConversionPattern=%c %d{yyyy-MM-dd HH\:mm\:ss} -%-4r [%t] %-5p  %x - %m%n
log4j.appender.CONSOLE.Target=System.out
log4j.appender.CONSOLE.Encoding=gbk
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout

log4j.appender.A=org.apache.log4j.DailyRollingFileAppender
log4j.appender.A.File=${catalina.home}/logs/jeef_log/PurePro_
log4j.appender.A.DatePattern=yyyy-MM-dd'.log'
log4j.appender.A.layout=org.apache.log4j.PatternLayout
log4j.appender.A.layout.ConversionPattern= %d{yyyy-MM-dd HH\:mm\:ss} %5p %c{1}\:%L \: %m%n

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