该问题解决办法:
<dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>1.5.6</version> <type>jar</type> </dependency> <dependency> <groupId>slf4j-simple</groupId> <artifactId>slf4j-simple</artifactId> <version>1.5.2</version> </dependency>