配置log4j

1：pom.xml文件中引入包

<dependency>
    <groupId>log4j</groupId>
    <artifactId>log4j</artifactId>
    <version>1.2.17</version>
</dependency>
2：resources下新建log4j.properties文件

######################## ????DEBUG????????consoleh?file?????, console?file?????????
log4j.rootLogger=DEBUG,console,file

########################??????????
log4j.appender.console = org.apache.log4j.ConsoleAppender
#??????
log4j.appender.console.Target = System.out
#?DEBUG????
log4j.appender.console.Threshold = DEBUG
log4j.appender.console.layout = org.apache.log4j.PatternLayout
#????
log4j.appender.console.layout.ConversionPattern=[%c]-%m%n

######################??????
log4j.logger.org.mybatis=DEBUG
log4j.logger.java.sql=DEBUG
log4j.logger.java.sql.Statement=DEBUG
log4j.logger.java.sql.ResultSet=DEBUG
log4j.logger.java.sql.PreparedStatement=DEBUG

3：开启

<settings>
    <setting name="logImpl" value="LOG4J"/>
</settings>