BindingException: Mapper method ‘com.itheima.dao.BookDao.update‘ has an un unsupported return

企业开发 2023-04-06 14:08:34 阅读次数: 0

最近在做SSM框架整合时，遇到这样的问题，由于是跟着B站完整的过流程，但是也遇到了个各种小问题，跟着报错路径，挨个调试，终于调通了，这个问题是最后调试成功前的最后一个问题，其他的忘记记录了。

一直在查找错误，忽略了返回值类型的问题

，在写代码时的不认真，给后面遇到问题的调试，增加很多困难

update,delete,insert语句是不需要设置返回类型的，它们都是默认返回一个int，所以应该修改dao层接口。

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转载自blog.csdn.net/azhiyou/article/details/127818805

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