使用Log4jdbc-log4j2打印mybatis的sql语句

<!-- 日志文件管理包 -->
<!-- log start -->
<dependency>
    <groupId>org.apache.logging.log4j</groupId>
    <artifactId>log4j-api</artifactId>
    <version>2.0</version>
    <scope>compile</scope>
</dependency>
<dependency>
    <groupId>org.apache.logging.log4j</groupId>
    <artifactId>log4j-core</artifactId>
    <version>2.0</version>
    <scope>compile</scope>
</dependency>
<!-- log4jdbc监控jdbc层 -->
<dependency>
    <groupId>org.bgee.log4jdbc-log4j2</groupId>
    <artifactId>log4jdbc-log4j2-jdbc4.1</artifactId>
    <version>1.16</version>
</dependency>
<!-- slf4j相关api -->
<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-api</artifactId>
    <version>1.7.5</version>
</dependency>
<!-- slf4j的一个实现包 -->
<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-simple</artifactId>
    <version>1.7.5</version>
</dependency>
<!-- log end --> 

log4jdbc.spylogdelegator.name=net.sf.log4jdbc.log.slf4j.Slf4jSpyLogDelegator

db.driverClassName=net.sf.log4jdbc.sql.jdbcapi.DriverSpy
db.url=jdbc:log4jdbc:mysql://localhost:3306/wechat_talk?useUnicode=true&characterEncoding=utf-8