The mapper class:

Database tables:

The User class:

Configuration is shown in figure, the table, there are three data interface call the first query method, don't know where there is a problem, the returned result is/null, null, null

CodePudding user response:

The User has a getter and setter methods

CodePudding user response:

reference 1st floor yang_coder response:

User have a getter and setter methods

some

CodePudding user response:

refer to the second floor jinenglengque response:

Quote: refer to 1st floor yang_coder response:

The User has a getter and setter methods

Some

So, now you find the problem? If not, the project to send me 1411091515 @ qq show it to you