org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in file [F:\workplace\o2o\target\myo2o\WEB-INF\classes\spring\spring-dao.xml]: Invocation of init method failed; nested exception is java.lang.UnsupportedClassVersionError: com/imooc/o2o/entity/Area : Unsupported major.minor version 52.0 (unable to load class com.imooc.o2o.entity.Area)
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