...ibatis.binding.BindingException: Mapper method 'xxx.insert' has an unsupported return type

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报错信息： 大概得意思是说xxxinsert方法得返回值不支持。

org.apache.ibatis.binding.BindingException: Mapper method 'com.jd.mapper.UploadPartMapper.insert' has an unsupported return type: class com.jd.entity.UploadPartDTO
	at org.apache.ibatis.binding.MapperMethod.rowCountResult(MapperMethod.java:110)
	at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:58)
	at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:59)
	at com.sun.proxy.$Proxy76.insert(Unknown Source)
	at com.jd.dao.UploadPartDao.insert(UploadPartDao.java:14)

报错原因：原因是返回值是UploadPartDTO是有问题。

@Mapper
public interface UploadPartMapper {
   UploadPartDTO insert(UploadPartDTO uploadPartDTO);
}

解决方法：将返回值改为int/boolean/long，不用试viod，string，char，double，int[]啥的，放心不好使的！目前测得支持前三种。

@Mapper
public interface UploadPartMapper {
    int insert(UploadPartDTO uploadPartDTO);
}

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