如何在Web Api中的Json / Xml请求中检测发布，过度发布和错误请求 [英] How Do I Detect Under Posting, Over Posting And Bad Request In Json/Xml Request In Web Api Asp.Net

问题描述

我在xml或json中有一个请求。如何检查请求是否包含缺失的正文或无效的正文项。

i have a request in xml or json. How can i check whether the request contain a missing body or invalid body item.

content-type:application/json;
Method:Post;
{"UserName":"tom12","Password":"XXXXXXXXX","FirstName":"tom","LastName":"jack", "MiddleName":"dick"}

他们可能在输入中缺少MiddleName，即输入可能是格式

their may be MiddleName missing int the input, i.e input may be in the form

{"UserName":"tom12","Password":"XXXXXXXXX","FirstName":"tom","LastName":"jack" }

这里我想检测输入错误并显示消息错误的请求格式 - 有些东西丢失了



或者，



2）有时他们可能会输入中的一些额外字段

Here i want to detect the error on input and display the message "Bad Request Format -- Something is Missing"

Or,

2) sometime their may be some extra field in the input

{"UserName":"Jeff Henry", "Password":"XXXXXXXXX","FirstName":"Jeff","LastName":"Henry","MiddleName":"ok","Email":"[e-mail]" }

Here i want to detect the error on input and display the message "Bad Request Format"

3) the FirstName and LastName are Required Field in the model, but they are empty i.e

{"UserName":"Jeff Henry", "Password":"XXXXXXXXX","FirstName":"","LastName":"","MiddleName":"ok"}

这里我想检测错误并显示消息RequiredFieldMissing





我的控制器：

here i want to detect the error and display message "RequiredFieldMissing"


My Controller:

 public HttpResponseMessage Post(User user, HttpRequestMessage request)
{


    if (ModelState.IsValid)
    {
       // insrt.Insert(user);

    }
    else
    {
        //Request.CreateResponse(HttpStatusCode.BadRequest, "Invalid model.");
    }

    return new HttpResponseMessage(HttpStatusCode.OK);
}

型号：

Models:

Public class User
  {
      public string UserName { get; set; }
      public string Password { get; set; }
      public string FirstName { get; set; }
      public string LastName { get; set; }
      public string MiddleName { get; set; }
  }

推荐答案

如果您对字段进行了必需的验证，那么它将不会发布&安培;除非您填写其中的值。所以，这可以消除你的问题。

如果你没有指定任何验证，你可以这样做：

If you have Required Validation on fields, then it won't be posted until & unless you fill values in it. So, that eliminates your issue.
And if you haven't specify any validation, you can do this:

string errorMessage = string.empty;
public HttpResponseMessage Post(User user, HttpRequestMessage request)
{
    if (ModelState.IsValid)
    {
       // insrt.Insert(user);

        if(string.IsEmptyOrNull(user.MiddleName))
        {
            errorMessage = "Middle Name is missing"
        }
        else if(string.IsEmptyOrNull(user.Email))
        {
            errorMessage = "Email is missing"
        }
        else if(condition for another property){
            // set the errorMessage....
        }
    }
    else
    {
        //Request.CreateResponse(HttpStatusCode.BadRequest, "Invalid model.");
    }
 
    return new HttpResponseMessage(HttpStatusCode.OK);
}

希望这就是你想要的。



-KR

Hope this is what you want.

-KR

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