How To Pass Two @RequestBody from Postman (springboot)-CodePudding

My Controller: enter image description here

postman request body is: [ { "id": "PG" }, { "id": "123456" } ]

Error: [org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: Cannot deserialize value of type Course from Array value (token JsonToken.START_ARRAY); nested exception is com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize value of type Course from Array value (token JsonToken.START_ARRAY) at [Source: (org.springframework.util.StreamUtils$NonClosingInputStream);

CodePudding user response：

@RequestBody annotated parameter is expected to hold the entire body of the request and bind to one object.

What you can do is make a new model such as EnrollmentObject and have the ID of the course and the ID of the student in there. Then, you can have @RequestBody EnrollmentObject enrollmentObject.

You should obviously go with another model name, but you get the point! ;-)

CodePudding user response：

As you are passing two object in enrollToCourse method. So, you have to pass that object in below manner in postman.

for course object

{ 
    "id": "PG" 
}

for student object

{
   "id": "123456" 
}

And if you want to store the value of both course and student class in single class then make DTO of it.

CodePudding user response：

You can define your request body as an array like the following:

public ResponseEntity<String> enroll(@RequestBody Course[] courses) {
    // use courses array here
}