出錯：Error creating bean with name 'studentServiceImpl': Unsatisfied dependency expressed through field 'studentMapper';
詳細錯誤： 第一：先查看‘studentMapper’有沒有注入到StudentService里面，經過檢查已注入 第二：查看‘studentMapper’有沒有被掃描到Spring ...
原文：解決問題：Error creating bean with name 'xxxController': Unsatisfied dependency expressed through field 'xxxService'
問題 這個問題是因為bean在注入service的時候失敗了，而service的實現類和mapper沒有關聯起來，mapper找不到 解決辦法 在mapper接口上加一個注解 Mapper ...
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