Question

我有一个api控制器CustomerController，它返回客户数据：

using System.Collections.Generic;
using System.Linq;
using System.Web.Http;
using CustomerMngmt.Models;

namespace CustomerMngmt.Controllers
{
    public class CustomersController : ApiController
    {
        private readonly Customer[] _customer =
    {
        new Customer
        {
            Id = 1,
            firstName = "Florian",
            lastName = "Hofmeister",
            emailAddress = "florianhofmeister@test.de",
            company = "Germany",
            pictureURL = "......jpg"
        },
        new Customer
        {
            Id = 2,
            firstName = "Svenja",
            lastName = "Hofmeister",
            emailAddress = "svenjahofmeister@test.de",
            company = "Germany",
            pictureURL = "......jpg"
        },
        new Customer
        {
            Id = 3,
            firstName = "Marvin",
            lastName = "Hofmeister",
            emailAddress = "marvinhofmeister@test.de",
            company = "Germany",
            pictureURL = "......jpg"
        }
    };



        public IEnumerable<Customer> GetAllCustomers()
        {
            return _customer;
        }

        public Customer GetCustomerById(int id)
        {
            var customer = _customer.FirstOrDefault(c => c.Id == id);

            return customer;
        }
    }
}

然后我用javascript加载数据：

function loadCustomer() {

    jQuery.support.cors = true;
    $.ajax({
        url: 'http://localhost:54172/api/customers',
        type: 'GET',
        dataType: 'json',
        data:{},
        success: function (data) {

            for (var i = 0; i < data.length; i++) {
                var customer = new customer(
                    '1',
                    data[i].id,
                    data[i].firstName,
                    data[i].lastname,
                    data[i].companyName,
                    data[i].emailAddress,
                    data[i].pictureURL);

                self.customers.push(customer);
            }
        },
        error: function (x, y, z) {
            alert(x + '\n' + y + '\n' + z + "TEST");
            console.log(x + '\n' + y + '\n' + z + "TEST");
        }
    });
}

我的问题是该函数不从控制器加载元素。相反，我收到错误消息[object Object]errorTEST。

Answer 1

ajax中的url与任何控制器或操作都不匹配。如果脚本在cshtml文件中，您可以使用url helper来构建url。出于安全原因，如果您在此进行身份验证，我建议使用POST而不是GET。最后，您可以使用responseText查看实际的错误消息。

$.ajax({
    url: @Url.Action("Customers", "GetAllCustomers"), // or try 'http://localhost:54172/Customers/GetAllCustomers'
    type: 'POST',
    success: function (data) {
        for (var i = 0; i < data.length; i++) {
            var customer = new customer(
                '1',
                data[i].id,
                data[i].firstName,
                data[i].lastname,
                data[i].companyName,
                data[i].emailAddress,
                data[i].pictureURL);

            self.customers.push(customer);
        }
    },
    error: function (x, y, z) {
        alert(x.responseText + '\n' + y + '\n' + z + "TEST");
        console.log(x.responseText + '\n' + y + '\n' + z + "TEST");
    }
});

Answer 2

尝试将网址更改为此网址 - ＆gt; ControllerName /方法

Answer 3

在我看来你应该明显改变ajax（/ controller / action）中的url并从你的api控制器返回json。因此，我不会在您的代码中看到名为客户的操作。

Answer 4

API没有任何问题，我怀疑在尝试创建customer集合时，你的JavaScript正在爆炸。尝试将其添加到JavaScript：

function customer(id, firstname, lastname, companyname, email, pic) {
            this.Id = id;
            this.FirstName = firstname;
            this.LastName = lastname;
            this.Company = companyname;
            this.email = email;
            this.Pic = pic;
        }

并且更改您正在创建的变量，我已在示例中更改为cus ...

var cus = new customer(
                        '1',
                        data[i].id,
                        data[i].firstName,
                        data[i].lastname,
                        data[i].companyName,
                        data[i].emailAddress,
                        data[i].pictureURL);

                    self.customers.push(cus);

对ASP.NET MVC API的JQuery Ajax调用返回错误

4 个答案: