时间戳

首页 > 解决方案 > 在邮递员 chrome 中发布请求工作正常，但在本地邮递员中我不断收到 System.NullReferenceException

c# - 在邮递员 chrome 中发布请求工作正常，但在本地邮递员中我不断收到 System.NullReferenceException

问题描述

我很少有 C# API 调用 MSSQL 数据库的 Post 和 Get 方法。我使用第二个连接字符串创建了数据库的副本和那些 API 的副本 - 指的是新数据库。

在本机 postman 中，对旧 API 的调用工作正常，我得到结果 200，但对新 API 的调用不断返回状态 400 并且响应正文以：“System.NullReferenceException”在 chrome postman 中，所有 API（旧的和新的）工作正常。

有效载荷（body x-www-form-urlencoded）参数似乎没有转发到本机邮递员的输入类中。

请求头：[{"key":"Content-Type","value":"application/x-www-form-urlencoded","description":""}]

请求正文 x-www-form-urlencoded：

[{"key":"Entranceref","value":"25","description":""},{"key":"Primaryid","value":"1234","description":""} ,{"key":"Secondaryid","value":"1234","description":""},{"key":"Loginip","value":"1.1.1.1","description":" "},{"key":"Useragent","value":"dfgffd","description":""},{"key":"Registrar","value":"0","description":" "},{"key":"Cookieid","value":"rtyu","description":""},{"key":"Cookiecount","value":"1","description":""},{"key":"Languageid","value":"he","description":""}]

状态 - 400 错误请求

回复正文：

“ClassName”：“System.NullReferenceException”，“Message”：“对象引用未设置为对象的实例。”，“Data”：null，

这是 API 输入类

      public class MdCheckEvent
     {
      public string Entranceref { get; set; }
        public string Primaryid { get; set; }
        public string Secondaryid { get; set; }
        public string Loginip { get; set; }
        public string Useragent { get; set; }
        public int Registrar { get; set; }
        public string Cookieid { get; set; }
        public int Cookiecount { get; set; }
        public string Languageid { get; set; }
    }
    [HttpPost public HttpResponseMessage PostCheckEnterance([FromBody] MdCheckEvent Inputs)

标签： c#postpostman

解决方案

解决了问题：

从头开始编写参数 - 解决了它。它错过了每个参数的类型和启用定义。

奇怪的是它仅在本机版本中有效。

现在有效载荷看起来像这样：

[{"key":"Entranceref","value":"25","description":"","type":"text","enabled":true},{"key":"Primaryid"," value":"1234","description":"","type":"text","enabled":true},{"key":"Secondaryid","value":"1234","description": "","type":"text","enabled":true},{"key":"Loginip","value":"1.1.1.1","description":"","type":"text ","enabled":true},{"key":"Useragent","value":"1313sdasd","description":"","type":"text","enabled":true},{"key":"Registrar","value":"1","description":"","type":"text","enabled":true},{"key":"Cookieid" ,"value":"121ss","description":"","type":"text","enabled":true},{"key":"Cookiecount","value":"1","description ":"","type":"text","enabled":true},{"key":"Languageid","value":"he","description":"","type":"text ","启用":true}]{"key":"Cookieid","value":"121ss","description":"","type":"text","enabled":true},{"key":"Cookiecount","value ":"1","description":"","type":"text","enabled":true},{"key":"Languageid","value":"he","description":" ","type":"text","enabled":true}]{"key":"Cookieid","value":"121ss","description":"","type":"text","enabled":true},{"key":"Cookiecount","value ":"1","description":"","type":"text","enabled":true},{"key":"Languageid","value":"he","description":" ","type":"text","enabled":true}]key":"Languageid","value":"he","description":"","type":"text","enabled":true}]key":"Languageid","value":"he","description":"","type":"text","enabled":true}]

推荐阅读