javascript - 通过 REST API 响应 native /Spring Boot，值为 0 或 null

Question

我正在尝试将一些数据从我的前端(react native)发送到我的中间件(spring boot)，并且由于某种原因，这些值变为 0 和 null。通过 postman 发送完全相同的对象效果很好。我尝试过用 "像 "quizId":2 一样将参数名称括起来，但它也不起作用。我之前使用过下面的确切方法，取得了巨大成功。我一无所知至于这是如何发生的。非常感谢任何帮助。

端点:

void recordScore(@RequestBody Score score){
    System.out.println(score);
    serv.recordScore(score);
}

从 React Native 发送时上面 sysout 的控制台输出:

Score(quizId=0, staffId=0, totalScore=0.0, userQuizRecords=null, timeTaken=0, correctAns=0, takenDate=null)

使用 postman 时的控制台输出:

Score(quizId=3, staffId=405986, totalScore=30.0, userQuizRecords=[UserQuizRecord(id=0, staffId=405986, quizId=2, questionId=5, score=4, correctAns=true, takenDate=null), UserQuizRecord(id=0, staffId=405986, quizId=2, questionId=6, score=1, correctAns=false, takenDate=null), UserQuizRecord(id=0, staffId=405986, quizId=2, questionId=7, score=4, correctAns=true, takenDate=null), UserQuizRecord(id=0, staffId=405986, quizId=2, questionId=8, score=3, correctAns=false, takenDate=null)], timeTaken=400, correctAns=4, takenDate=null)

js:

let score = {
      quizId: 2,
      staffId: 405986,
      totalScore: 30,
      userQuizRecords: [{
              staffId: 405986,
              quizId: 2,
              questionId: 5,
              score: 4,
              correctAns: true
          },
          {
              staffId: 405986,
              quizId: 2,
              questionId: 6,
              score: 1,
              correctAns: false
          },
          {
              staffId: 405986,
              quizId: 2,
              questionId: 7,
              score: 4,
              correctAns: true
          },
          {
              staffId: 405986,
              quizId: 2,
             questionId: 8,
              score: 3,
              correctAns:false
          }
      ],
      timeTaken: 400,
      correctAns: 4
    }

获取:

return fetch(apis.recordScore, {
            method: 'POST',
            headers: {
                'Accept': 'application/json',
                'Content-Type': 'application/json',
            },
            body: JSON.stringify({
                score:score
            })

Answer 1

您可以尝试在不使用大括号的情况下对对象进行字符串化吗

body: JSON.stringify(score)