在邮递员调用期间变量不为空

Question

设置一个Java Postman调用，为变量赋值，但它显示为NULL。

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

      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;
    }

邮递员请求

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

Answer 1

您的请求主体应该如下所示：

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

因为您将StudentRequest作为RequestBody获取，这意味着您应该在请求中发送StudentRequest内部属性，而不包含StudentRequestit self，第二个问题是您的RequestBody包含单个对象而不是数组。