Spring @RequestBody Error Fix Guide
There are a few reasons why the @RequestBody annotation may not work when used to receive request body data sent from the front end in Spring.
- Make sure to add either @RestController or @Controller annotation on your controller class to identify it as a controller and be able to handle requests.
- Adding the @RequestBody annotation is missing: Add the @RequestBody annotation to the method parameter that is receiving request body data, to instruct Spring to bind the request body data to that parameter.
- Missing dependencies: When using @RequestBody, make sure that your project has added relevant dependencies such as spring-web or spring-boot-starter-web.
- The Content-Type in the request header is incorrect: @RequestBody by default uses request body data with Content-Type as application/json. If the data type sent in the request body is not application/json, then the Content-Type needs to be adjusted to application/json.
If none of the above solutions address your issue, you can provide more code and error information to better assist in resolving your problem.
