如何反序列化 JSON 对象？

debugcn 发表于 Dev

哈斯纳特·阿迪尔

我正在使用 Angular 7 开发前端的网站。我正在将一个 json 格式的 angular 数组发送到 c# asp.net 核心。我正在获取以下格式的数据

`First = {"model": [{
   "_organization_Name": "erw",
   "_designation": "dfs",
   "_p_Start_Date": "2019-02-28T19:00:00Z",
   "_p_End_Date": "2019-03-27T19:00:00Z"
 },
 {
   "_organization_Name": "erwfg",
   "_designation": "dfsfgfg",
   "_p_Start_Date": "2019-02-28T19:00:00Z",
   "_p_End_Date": "2019-03-27T19:00:00Z"
 }
]
}`

我在下面的asp.net核心中的方法

[HttpPost("[action]")]
    public IActionResult SaveProfessional([FromBody]JObject prof)
    {

        var obj = new Candidate_Professional_Info_Table(_context);
        obj.Identity_Number = 112131.ToString();
        obj = 
JsonConvert.DeserializeObject<Candidate_Educational_Info_Table>(prof);

        var result = obj.SaveProfessional(prof);
        return Ok(new { suces = "result" });
    }

我的代码没有反序列化 json 对象请提供任何解决方案，因为现在我在这个问题上花了一个星期。下面给出了我的 c# 模型

 public int ID { get; set; }
    public string Identity_Number { get; set; }
    [Required]
    [RegularExpression("^[a-zA-Z0-9]+$", ErrorMessage = "Organization Name Not Valid")]
    public string Organization_Name { get; set; }

    [Required]
    [RegularExpression("^/d{1, 2}///d{1,2}///d{4}$")]
    public DateTime? p_Start_Date { get; set; }

    [RegularExpression("^/d{1, 2}///d{1,2}///d{4}$")]
    public DateTime? p_End_Date { get; set; }
    [Required]
    [RegularExpression("^[a-zA-Z0-9]+$", ErrorMessage = "Designation Name Not Valid")]
    public string Designation { get; set; }

    public  bool InProgress { get; set; }
    [NotMapped]
    public List<Candidate_Professional_Info_Table> listprof { get; set; }
    [NotMapped]
    private readonly RegConnString _Context;
    public Candidate_Professional_Info_Table(RegConnString connString)
    {
        _Context = connString;
    }

米哈尔扬

您的属性前有下划线，这就是 JsonConvert 无法正确映射的原因。

您可以使用 [JsonProperty("")] 属性映射到正确的属性

你的属性看起来像那时

[Required]
[RegularExpression("^[a-zA-Z0-9]+$", ErrorMessage = "Organization Name Not Valid")]
[JsonProperty("_organization_Name")]
public string Organization_Name { get; set; }

[Required]
[RegularExpression("^/d{1, 2}///d{1,2}///d{4}$")]
[JsonProperty("_p_Start_Date")]
public DateTime? p_Start_Date { get; set; }

[RegularExpression("^/d{1, 2}///d{1,2}///d{4}$")]
[JsonProperty("_p_End_Date")]
public DateTime? p_End_Date { get; set; }

[Required]
[RegularExpression("^[a-zA-Z0-9]+$", ErrorMessage = "Designation Name Not Valid")]     
[JsonProperty("_designation")]
public string Designation { get; set; }

剩下的来处理。您有一个名为模型的根对象。但我们想要的只是List<Candidate_Educational_Info_Table>

public IActionResult SaveProfessional([FromBody]JObject prof)
{
   //select the model itself. Also do some nullchecking to prevent errors if empty
   var fooModel = prof.First;
   //select the content of the model(your actual array). Also do some nullchecking to prevent errors if empty
   var fooObjectArray= fooModel.First;
   var theDeserializedList = fooObjectArray.ToObject<List<Candidate_Educational_Info_Table>>();

   foreach (var item in theDeserializedList)
   {
      //handle the rest of what you want to do. 
      //As i see you inject the context into the objects on create but this will not be possible if you use the deserialze. 
      //Its better to pass the context on the method SaveProfessional
   }

    return Ok(new { suces = "result" });
}

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