java.lang.IllegalArgumentException: Mapped Statements collection already contains value for com.fairy.mapper.TeacherMapper.getAll 原因:SSM整合,mapper.xml和注解重复。 java.lang.IllegalArgumentException: Mapped Statements collection already contains value for com.fai java.lang.IllegalArgumentException: Mapped Statements collection already contains value for com.fai 去除其中一个就行！！！
