attempted to return null from a method with a primitive return type (int)异常的解决
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项目启动正常，执行添加时数据也能保存到数据库中，但报这个异常，org.apache.ibatis.binding.BindingException: Mapper method 'com.krk.gzytj.machineregister.mapper.MachineRgisterMapper.addMachineRegister attempted to return null from a method with a primitive return type (int).，原来是xxMapper.xml文件里写错了：
<select id="addMachineRegister" parameterType="MachineRgister">
insert into MachineRgister(sAreaCode,sHospitalCode,sSupplierCode,sMachineCode,sModel,dDistributeDate,sPUserCode,sPName,iFlag,dUpdateTime)values(#{sAreaCode},#{sHospitalCode},#{sSupplierCode},#{sMachineCode},#{sModel},#{dDistributeDate},#{sPUserCode},#{sPName},#{iFlag},#{dUpdateTime})
</select>
只需把select 替换成insert即可，因为这是执行insert的sql,使用<select id="">当然不合适了。
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