Im trying to send JSON data to the Api controller where HttpPost can add that data to file.

JSON File:

{
"students": 
 [
  {
  "Id": 1,
  "Name": "Ravi",
  "Department": "IT"
},
{
  "Id": 2,
  "Name": "Raj",
  "Department": "hr"
},
{
  "Id": 3,
  "Name": "avi",
  "Department": "it"
},
{
  "Id": 0,
  "Name": "string",
  "Department": "string"
},
{
  "Id": 8,
  "Name": "tanmay",
  "Department": "SDE"
},
{
  "Id": 10,
  "Name": "test",
  "Department": "Dev"
},
{
  "Id": 78,
  "Name": "abhi",
  "Department": "IT"
},
{
  "Id": 42,
  "Name": "grgr",
  "Department": "grgsrgs"
},
{
  "Id": 32,
  "Name": "wer",
  "Department": "new"
},
{
  "Id": 450,
  "Name": "tan",
  "Department": "ted"
}
]}

CLass: public class Student { public int Id { get; set; } public string Name { get; set; }

    public string Department { get; set; }
}
  public class Students
{
    public List<Student> students { get; set; }
}   

API controller

  [Route("api/[controller]")]
[ApiController]
public class StudentsController : ControllerBase
{
    public List<Student> students { get; set; }

 [HttpPost]
    public IActionResult AddUser(Students _Student)
    {

        var filePath = @"C:/Users/tanmay_pawar/source/repos/CRUDAPI/CRUDAPI/output.json";
        var json = System.IO.File.ReadAllText(filePath);

        Students students = JsonConvert.DeserializeObject<Students>(json);

        students.students.AddRange(_Student.students);

        json = JsonConvert.SerializeObject(students);
        System.IO.File.WriteAllText(filePath, json);

        return Ok();
    }
    }

jQuery:

     oStudent =
{
    "students": [   
    {
        Id: $("#st-Id").val(),
        Name: $("#st-Name").val(),
        Department: $("#st-Department").val()
        }
    ]
 }   


var postApiUrl = "https://localhost:7018/api/Students"

$.ajax({
    url: postApiUrl,
    type: 'POST',
    data: JSON.stringify(oStudent.students),
    contentType: 'application/json',
    dataType: 'json',
    success: function (msg) {
    alert(msg);
}
 });

I want send data from view to my api controller so that api can add that data to my file.

my api is working fine but there is some issue with ajax because it is not sending data to my api.

CodePudding user response：

I am not sure what is your HTML structure, but you may just try this to check if your AJAX post call is sending data correctly.

Initialize JSON data variable like this:

var data = [{ "Id": "1", "Name": "Student name 1","Department":"Dept 1"},
              { "Id": "2", "Name": "Student name 2","Department":"Dept 2"}
];

Call make AJAX call:

var postApiUrl = "/api/Students";

$.ajax({
    url: postApiUrl,
    type: 'POST',
    data: JSON.stringify(data),
    contentType: 'application/json',
    dataType: 'json',
    success: function (msg) {
    alert(msg);
}
 });

In your javascript you are also missing ";" semi-colon on the line where you are providng URL.

CodePudding user response：

Missing action name in post api URL.