分析问题，由于是找不包slf4j相应的jar包，因此是由于少jar包的原因。
slf4j 官方有常见错误解答： http://www.slf4j.org/codes.html#log4j_version
得知此错误原因是：
This error is reported when the org.slf4j.impl.StaticLoggerBinder class could not be loaded into memory. This happens when no appropriate SLF4J binding could be found on the class path. Placing one (and only one) of slf4j-nop.jar , slf4j-simple.jar , slf4j-log4j12.jar , slf4j-jdk14.jar or logback-classic.jar on the class path should solve the problem.
在官方下载 slf4j-1.5.2.zip
解压出slftj-nop-1.5.jar导入项目，后无报错，问题解决。