Ajax - 无法加载资源:服务器响应状态为500(内部服务器错误) [英] Ajax - Failed to load resource: the server responded with a status of 500 (Internal Server Error)
问题描述
我有一个名为CustomersInfoAPIController的控制器。我正在使用Knock out,webapi2,asp.net mvc5来构建一个应用程序。我使用knout JS绑定数据。当我运行应用程序并调试淘汰脚本时,我没有看到任何错误。当我尝试使用AJAX插入数据时,我看到错误无法加载资源:服务器响应状态为500(内部服务器错误)
ajax代码是:
I have a controller named CustomersInfoAPIController. I'm using Knock out, webapi2, asp.net mvc5 to build an application. I'm binding the data using knout JS. When I run the application and debug the knockout script, I don't see any error .When I try to insert data using AJAX I see error `"Failed to load resource: the server responded with a status of 500 (Internal Server Error)"
the ajax code is:
@{
ViewBag.Title = "Index";
Layout = "~/Views/Shared/_Layout.cshtml";
}
<h2>Index</h2>
@{
ViewBag.Title = " Add Customer";
}
<script src="~/Scripts/knockout-3.3.0.js"></script>
<script src="~/Scripts/jquery-1.10.2.min.js"></script>
<script src="~/Scripts/knockout.validation.js"></script>
<script type="text/javascript">
var addCustomerViewModel;
// use as register student views view model
function Customer(Id, CustomerName, ContactName, Address, City, PostalCode,Country) {
var self = this;
// observable are update elements upon changes, also update on element data changes [two way binding]
self.Id = ko.observable(Id);
self.CustomerName = ko.observable(CustomerName);
self.ContactName = ko.observable(ContactName);
self.Address = ko.observable(Address);
self.City = ko.observable(City);
self.PostalCode = ko.observable(PostalCode);
self.Country = ko.observable(Country)
self.addCustomer = function () {
var dataObject = ko.toJSON(this);
$.ajax({
url: '/api/CustomersInfo/Post',
type: 'post',
data: dataObject,
contentType: 'application/json',
success: function (data) {
addCustomerViewModel.customerListViewModel.customers.push(new Customer(data.Id,data.CustomerName, data.ContactName, data.Address, data.City, data.PostalCode, data.Country));
self.Id(null);
self.CustomerName('');
self.ContactName('');
self.Address('');
self.City('');
self.PostalCode(0);
self.Country('');
}
});
};
}
// use as customer list view's view model
function CustomersList() {
var self = this;
// observable arrays are update binding elements upon array changes
self.customers = ko.observableArray([]);
self.getCustomers = function () {
// retrieve customers list from server side and push each object to model's students list
self.customers.removeAll();
$.getJSON('/api/CustomersInfo/Get', function (data) {
$.each(data, function (key, value) {
self.customers.push(new Customer(value.Id,value.CustomerName, value.ContactName, value.Address, value.City, value.PostalCode, value.Country));
});
});
};
// remove customer. current data context object is passed to function automatically.
//self.removeCustomer = function (customer) {
// $.ajax({
// url: '/api/CustomersInfo/' + customer.Id(),
// type: 'delete',
// contentType: 'application/json',
// success: function () {
// self.customers.remove(customer);
// }
// });
//};
}
// create index view model which contain two models for partial views
customerRegisterViewModel = { addCustomerViewModel: new Customer(), customerListViewModel: new CustomersList() };
// on document ready
$(document).ready(function () {
// bind view model to referring view
ko.applyBindings(customerRegisterViewModel);
// load student data
customerRegisterViewModel.customerListViewModel.getCustomers();
});
</script>
<div class="page-header">
<h2 class="text-center">Customer Registration</h2>
</div>
<div class="row">
<div class="col-md-4">
<div class="panel panel-info">
<div class="panel-heading">
<h2 class="panel-title">Register new Customer</h2>
</div>
<div class="panel-body" data-bind="with: addCustomerViewModel">
@Html.Partial("_InsertCustomer")
</div>
</div>
</div>
<div class="col-md-8">
<div class="panel panel-primary">
<div class="panel-heading">
<h2 class="panel-title">Registerd Customers</h2>
</div>
<div class="panel-body" data-bind="with: customerListViewModel">
@Html.Partial("_DisplayCustomers")
</div>
</div>
</div>
</div>
我的控制器操作是:
My Controller action is :
public class CustomersInfoController : ApiController
{
// GET api/student
public IEnumerable<Customer> Get()
{
return CustomersRepository.GetCustomers();
}
// GET api/student/5
public Customer Get(int Id)
{
return CustomersRepository.GetCustomers().FirstOrDefault(s=>s.ID == Id);
}
// POST api/student
public HttpResponseMessage Post(Customer customer)
{
CustomersRepository.InsertCustomer(customer);
var response = Request.CreateResponse(HttpStatusCode.Created, customer);
string url = Url.Link("DefaultApi", new { customer.ID });
response.Headers.Location = new Uri(url);
return response;
}
// DELETE api/student/5
public HttpResponseMessage Delete(int id)
{
CustomersRepository.DeleteCustomer(id);
var response = Request.CreateResponse(HttpStatusCode.OK, id);
return response;
}
}
如何避免此错误,以便我可以存储数据
How to avoid this error so that I can store the data
推荐答案
.ajax({
url:' / api / CustomersInfo / Post' ,
类型:' post',
data:dataObject ,
contentType:' application / json',
成功: function (data){
addCustomerViewModel.customerListViewModel.customers.push( new Customer(data.Id,data) .CustomerName,data.ContactName,data.Address,data.City,data.PostalCode,data.Country));
self.Id( null );
self.CustomerName(' ' 跨度>);
self.ContactName(' ');
self.Address(' ');
self.City(' ');
self.PostalCode( 0 );
self.Country(' ');
}
});
};
}
// 用作客户列表视图的视图模型
function CustomersList(){
var self = 此跨度>;
// 可观察数组是数组更改时的更新绑定元素
self.customers = ko.observableArray([]);
self.getCustomers = function (){
// 从服务器端检索客户列表并将每个对象推送到模型的学生列表
self.customers.removeAll();
.ajax({ url: '/api/CustomersInfo/Post', type: 'post', data: dataObject, contentType: 'application/json', success: function (data) { addCustomerViewModel.customerListViewModel.customers.push(new Customer(data.Id,data.CustomerName, data.ContactName, data.Address, data.City, data.PostalCode, data.Country)); self.Id(null); self.CustomerName(''); self.ContactName(''); self.Address(''); self.City(''); self.PostalCode(0); self.Country(''); } }); }; } // use as customer list view's view model function CustomersList() { var self = this; // observable arrays are update binding elements upon array changes self.customers = ko.observableArray([]); self.getCustomers = function () { // retrieve customers list from server side and push each object to model's students list self.customers.removeAll();
.getJSON(' / api / CustomersInfo / Get', function (data){
.getJSON('/api/CustomersInfo/Get', function (data) {
.each(data, function (key,value){
self.customers.push( new Customer(value.Id,value.CustomerName,value.ContactName,value.Address,value.City,value.PostalCode,value。国家));
});
});
};
// 删除客户。当前数据上下文对象自动传递给函数。
// self.removeCustomer = function(客户){
//
.each(data, function (key, value) { self.customers.push(new Customer(value.Id,value.CustomerName, value.ContactName, value.Address, value.City, value.PostalCode, value.Country)); }); }); }; // remove customer. current data context object is passed to function automatically. //self.removeCustomer = function (customer) { //
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