Could not set parameters for mapping 和Expected one result (or null) to be returned by selectOne(), b
今天在練習mybatins的時候，突然思考一個問題。 StudentDao接口中的方法 測試方法 測試方法中字符串裏面又加了一個單引號的字符串是我在嘗試，這個加不加報錯的信息都是一樣的 mapper中 報錯信息 由前面的運行過程可以看出來，前面都沒問題，就是到19行，不能映射到mapper 然後把String name 換成了Integer id 這個id是我這張表的主鍵。就能成功運行了 此時我又
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- 2. TooManyResultsException: Expected one result (or null) to be returned by selectOne(), but found: 2]
- 3. 解決:TooManyResultsException: Expected one result (or null) to be returned by selectOne(), but found:
- 4. Expected one result (or null) to be returned by selectOne(), but found: 2
- 5. BUG之Expected one result (or null) to be returned by selectOne(), but found: 4
- 6. MyBatis報錯：Expected one result (or null) to be returned by selectOne(), but found: 2
- 7. Expected one result (or null) to be returned by selectOne(), but found: 20
- 8. 解決 Expected one result (or null) to be returned by selectOne(), but found: 2
- 9. org.apache.ibatis.exceptions.TooManyResultsException: Expected one result (or null) to be returned
- 10. 關於Expected one result (or null) to be returned by selectOne(), but found: 3。。。。異常
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相關文章
- 1. Expected one result (or null) to be returned by...
- 2. TooManyResultsException: Expected one result (or null) to be returned by selectOne(), but found: 2]
- 3. 解決:TooManyResultsException: Expected one result (or null) to be returned by selectOne(), but found:
- 4. Expected one result (or null) to be returned by selectOne(), but found: 2
- 5. BUG之Expected one result (or null) to be returned by selectOne(), but found: 4
- 6. MyBatis報錯：Expected one result (or null) to be returned by selectOne(), but found: 2
- 7. Expected one result (or null) to be returned by selectOne(), but found: 20
- 8. 解決 Expected one result (or null) to be returned by selectOne(), but found: 2
- 9. org.apache.ibatis.exceptions.TooManyResultsException: Expected one result (or null) to be returned
- 10. 關於Expected one result (or null) to be returned by selectOne(), but found: 3。。。。異常