Detected both log4j-over-slf4j.jar AND slf4j-log4j12.jar on the class path, preempting StackOverflowError.

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Detected both log4j-over-slf4j.jar AND slf4j-log4j12.jar on the class path, preempting StackOverflowError. See also http://www.slf4j.org/codes.html#log4jDelegationLoop for more details.

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C:\Documents and Settings\Administrator\.m2\repository\org\slf4j\slf4j-log4j12\1.7.2\slf4j-log4j12-1.7.2.jar

C:\Documents and Settings\Administrator\.m2\repository\org\slf4j\log4j-over-slf4j\1.7.5\log4j-over-slf4j-1.7.5.jar

解决：二去一