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Mybatis结合Spring报错:
org.mybatis.spring.MyBatisSystemException: nested exception is 
org.apache.ibatis.exceptions.TooManyResultsException: Expected one result (or 
null) to be returned by selectOne(), but found: 6 at 
org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:92) 
at 
org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:440) 
at com.sun.proxy.$Proxy8.selectOne(Unknown Source) at 
org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:159) at 
org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:87) at 
org.apache.ibatis.binding.MapperProxy$PlainMethodInvoker.invoke(MapperProxy.java:152) 
at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:85) at 
com.sun.proxy.$Proxy10.queryById(Unknown Source) 
解决方法:
检查相关SQL语句