问题：
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder". SLF4J: Defaulting to no-operation (NOP) logger implementation SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
解决办法：
在pom.xml中添加
<dependency>
<groupId>org.slf4j
</groupId>
<artifactId>slf4j-api
</artifactId>
<version>1.7.5
</version>
</dependency>
<dependency>
<groupId>org.slf4j
</groupId>
<artifactId>slf4j-log4j12
</artifactId>
<version>1.7.5
</version>
</dependency>
参考：
https://stackoverflow.com/questions/7421612/slf4j-failed-to-load-class-org-slf4j-impl-staticloggerbinder
