Variables are not coming up null during Postman call-CodePudding

Setting up an Java Postman call assigning values to the variables but its shows null.

        @PostMapping("/caStudents/student")
    public String generateSignedValue(@RequestBody StudentRequest studentRequest) throws Exception  
        String signedValue=studentService.getSignedValue(studentRequest);
        return signedValue;

My Pojo Student Class

      public class StudentRequest {
      String user;
      Long duration ;
      public String getPublicKey() {
        return publicKey;
    }

    public void setPublicKey(String publicKey) {
        this.publicKey = publicKey;
    }

    public String getUser() {
        return user;
    }

    public void setUser(String user) {
        this.user = user;
    }

    public Long getDuration() {
        return duration;
    }

    public void setDuration(Long duration) {
        this.duration = duration;
    }

Postman Request

{"studentRequest":[{"user":"admin","duration":19336}]}

CodePudding user response：

your request body should be like this:

{"user":"admin","duration":19336}

because you are getting StudentRequest as RequestBody and it means you should send StudentRequest internal properties not containing StudentRequest it self in request , second problem is that your RequestBody contains singular object not array .

CodePudding user response：

request body should be {"user":"admin","duration":19336}

CodePudding user response：

According to what you've given us your request should actually be

{
   "user": "admin",
   "duration": 19336
}

If you want to provide multiple student requests at once (within an array), then you're StudenRequest class should look somewhat like this:

public class StudentRequest {
  List<StudentR>;

  // Getter and Setter or not in case you use lombok

  class StudenR {
     String user;
     Long duration ;
  }
}