This is my code






Upset for a day, to receive the value is null

CodePudding user response:

Have a look at your controller access paths, and where you access the controller

CodePudding user response:

Post submission of data type is json, the Controller method is useless @ RequestBody or @ RequestParam inside

CodePudding user response:

Is not the date data

CodePudding user response:

refer to the 4th floor stop human petard response:

the data is not the date

Problem has been solved, thank you

CodePudding user response:

Using the @ RequestParam annotation will own form in the front-end data parameter name mapping;
Add @ ResponseBody?
To see if the path corresponds to?

CodePudding user response:

You are written in the servlet backend controller, directly from the request to have variable names, json is equivalent to a group, you can try request. GetParameterValues () or request. GetParameterNames () can try to get the data