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Could not set parameters for mapping 和Expected one result (or null) to be returned by selectOne(), b
時間 2021-05-23
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mysql
java
mybatis
欄目
MySQL
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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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Expected one result (or null) to be returned by...
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解決:TooManyResultsException: Expected one result (or null) to be returned by selectOne(), but found:
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Expected one result (or null) to be returned by selectOne(), but found: 2
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BUG之Expected one result (or null) to be returned by selectOne(), but found: 4
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MyBatis報錯:Expected one result (or null) to be returned by selectOne(), but found: 2
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Expected one result (or null) to be returned by selectOne(), but found: 20
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解決 Expected one result (or null) to be returned by selectOne(), but found: 2
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org.apache.ibatis.exceptions.TooManyResultsException: Expected one result (or null) to be returned
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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
>>更多相關文章<<