1 Pom.xml添加依赖包
slf4j-log4j12这个包依赖了slf4j和log4j,所以使用slf4j+log4j的组合只要配置上面这一个依赖就够了
<dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>1.7.21</version> </dependency>
2 在src/main/resources下创建conf文件夹
3 修改web.xml
webAppRootKey为自动获取项目路径
<context-param> <param-name >webAppRootKey</param-name > <param-value >webApp.root </param-value > </context-param > <context-param> <param-name>log4jConfigLocation</param-name> <param-value>classpath:/conf/log4j.properties</param-value> </context-param> <listener> <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class> </listener>
4 在WEB-INFO下新建logs文件夹
在linux下如果文件夹不存在则不会自动创建,war包不会自动编译。所以在项目中创建好文件夹
5 在src/main/resources/conf下创建并配置配置文件文件log4j.properties
按照log优先级,记录error的日志避免日志过大。其中如果logger不指定debug或者info,则配置的日志不会自动记录
#logger log4j.rootLogger=debug,errorLogFile log4j.additivity.org.apache=false # errorLog appender log4j.appender.errorLogFile=org.apache.log4j.RollingFileAppender log4j.appender.errorLogFile.MaxFileSize=4MB log4j.appender.errorLogFile.Threshold=ERROR log4j.appender.errorLogFile.ImmediateFlush=true log4j.appender.errorLogFile.Append=true log4j.appender.errorLogFile.File=${webApp.root}/WEB-INF/logs/errorLog.log # errorLog layout log4j.appender.errorLogFile.layout=org.apache.log4j.PatternLayout log4j.appender.errorLogFile.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} [%p] %m%n
参考:
日志配置:
https://www.cnblogs.com/ywlaker/p/6124067.html
http://www.codeceo.com/article/log4j-usage.html
自动获取项目路径:
http://elf8848.iteye.com/blog/2008595
日志等级优先级:
http://blog.csdn.net/duruiqi_fx/article/details/52689130