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Mybatis：Mapper method attempted to return null from a method with a primitive return type (int)

本文轉載自查看原文 2021-04-09 16:40 319

關鍵詞

SpringMVC SSM Mybatis eclipse

報錯內容

Mybatis：Mapper method attempted to return null from a method with a primitive return type (int)

原因

Mapper.xml的標簽用錯了。。。（低級錯誤，輕噴。。。）

比如本來應該：
插入語句用<insert></insert>，更新語句用<update></update>，刪除語句用<delete></delete>

結果全用成<select></select>

解決

用回對應的標簽就行。

參考

Mybatis：Mapper method attempted to return null from a method with a primitive return type (int)

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