Question

所有相关代码：

//JSON data
var dataType = 'application/json; charset=utf-8';
var data = {
    FirstName: 'Andrew',
    LastName: 'Lock',
    Age: 31
}

console.log('Submitting form...');
$.ajax({
    type: 'POST',
    url: '/Diary/Save',
    dataType: 'json',
    contentType: dataType,
    data: data,
    success: function (result) {
        console.log('Data received: ');
        console.log(result);
    }
});


[HttpPost]
public IActionResult Save([FromBody] Person person)
{
    return Json(person);
}



public class Person
{
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public int Age { get; set; }
}

＆＃34;人＆＃34;在Save方法中始终为null。这应该工作......感觉可能像设置问题？我需要在这里进行更改：

 services.AddMvc(options =>
        {
        });

Answer 1

您需要将要发送到服务器的数据进行字符串化，以将其转换为JSON，因为这是您指定的内容类型标题：

 dt <- setDT(structure(list(File.Name = c("file1.xlsx", "file2.xlsx", "file3.xlsx")
 , Split.ID = structure(c(1L, 1L, 1L)
 , .Label = c("1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11","12", "13", "14", "15", "16", "17", "18", "19", "20"), class = "factor"))
 , .Names = c("File.Name", "Split.ID")
 , class = c("data.table", "data.frame"), row.names = c(NA, -3L)))


 for(file in as.vector(dt[1:3,1])){
    print(file)
    }

  for(i in letters[1:4]){print(i)}

Answer 2

请尝试以下解决方案：
在Jquery文件中：

var data = {firstname : 'ali', lastname: 'alavi', age: 31};
var formData = new FormData();
formData.append('data',JSON.stringify(data));

$.ajax({
        type: "POST",        
        url: controllerUrl, //something like ~/[ControllerName]/[ActionName]
        data: formData,
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        processData: false,
        contentType: false,
        success: function (data) {
            if (data.success)
                // ...
            else
                // ...
        },
        error: function () {
            // log error ...
        }
    });

然后在您的控制器中尝试：

using Newtonsoft.Json;
.
.
.
 [HttpPost]
 public JsonResult CreateServicesPost(string data)
 {
     var personModel = new PersonModel();
     personModel = JsonConvert.DeserializeObject<PersonModel>(data);
      // ...
 }

您的Perso模型是：

public class CreateServicePostModel
{
        public string Firstname{ get; set; }
        public string Lastname { get; set; }
        public int Age { get; set; }
}

在ASP.Net Core中发布json时，MVC模型为null

2 个答案: