1 pom.xml添加引用：以下三个都要
<dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>1.7.25</version></dependency><dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.17</version></dependency><dependency> <groupId>org.bgee.log4jdbc-log4j2</groupId> <artifactId>log4jdbc-log4j2-jdbc4.1</artifactId> <version>1.16</version></dependency>2 设置mybatis的配置文件 mybatis-config.xml <settings> <!--打印日志到slf4j--> <setting name="logImpl" value="SLF4J"></setting></settings>3 log4j的属性要注意日志级别是DEBUG,尤其是下面第二句，我没注意将INFO修改成DEBUG，日志没打印出来 log4j.rootLogger=DEBUG,filelog4j.appender.file.Threshold=DEBUG转载于:https://www.cnblogs.com/lylongs/p/11183954.html
相关资源：mybatis查询入门(log4j控制台sql语句日记输出的)