SQL statement that's right, also check to get the data, but the object encapsulation is empty

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Little notes?

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How queryOne implementation?

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refer to the second floor royal dragon's reply:

is a little note?

is less a @ webservlet annotations, but I also not line

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reference dkwuxiang reply: 3/f

how queryOne implementation?

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reference dkwuxiang reply: 3/f

how queryOne implementation?

this is I use reflection and JDBC