【struts2】配置log4j，设置日志文件保存路径

1. 到pom.xml添加log4j dependency

           <groupId>log4j</groupId>
               <artifactId>log4j</artifactId>
               <version>${log4j.version}</version>
           </dependency>

2. 到classpath下，如src/main/resources下添加log4j.properties

   log4j.projectName=log4j-test-webapp
   log4j.rootLogger=DEBUG, FILE
   
   # define the appender
   log4j.appender.FILE=org.apache.log4j.FileAppender
   log4j.appender.FILE.File=${catalina.home}/logs/${log4j.projectName}.log
   
   # define the layout
   log4j.appender.FILE.layout=org.apache.log4j.PatternLayout
   log4j.appender.FILE.layout.conversionPattern=%d %5p (%c:%L) - %m%n

   其中用于保存log的日志文件位于tomcat下的logs目录。命名为项目名称.log