无法绑定数据从数据库中获取的视图中使用angularJS视图、数据库中、绑定、数据

2023-09-14 00:18:22 作者:EXO、吥変De垨堠

我试图从数据库中提取数据,并使用AngularJS绑定在一个视图。对于我写了一个WEM方法如下:

  [的WebMethod]公共静态字符串的getName(){  提供SQLHelper SQL =新提供SQLHelper();  DataTable的DT = sql.ExecuteSelectCommand(选择客户cust_F_name);  字典<字符串对象>字典=新词典<字符串对象>();  [对象] ARR =新对象[dt.Rows.Count]  的for(int i = 0; I< = dt.Rows.Count  -  1;我++){    改编[I] = dt.Rows [I] .ItemArray;  }  dict.Add(dt.TableName,ARR);  JSON的JavaScriptSerializer =新的JavaScriptSerializer();  返回json.Serialize(字典);} 

和我叫它使用AngularJS:

  VAR DemoApp = angular.module('DemoApp',[]);DemoApp.factory('SimpleFactory',函数($ HTTP){  返回{    getCustomer:功能(){      返回$ http.post('Home.aspx /的getName',{名字:});    }  };});DemoApp.controller('SimpleController',函数($范围,SimpleFactory){  SimpleFactory.getCustomer()。然后(函数(客户){    $ scope.Customer = $ parseJSON(customer.d)。  },功能(错误){    //错误处理  });}); 

我绑定鉴于这样的:

 < HTML的xmlns =htt​​p://www.w3.org/1999/xhtml数据-NG-应用=DemoApp>  <头=服务器>    <标题>< /标题>  < /头>  <车身数据-NG-控制器=SimpleController>    <表ID =form1的=服务器>      < D​​IV>        名称<输入类型=文本数据-NG-模式=名/> {{名}}        < UL>          <李数据-NG-重复=客户名称在客户|过滤器:名称> {{客户名称}}< /李>        < / UL>      < / DIV>    < /表及GT;    &所述; SCRIPT SRC =htt​​ps://ajax.googleapis.com/ajax/libs/angularjs/1.2.7/angular.min.js>&下; /脚本>    &所述; SCRIPT SRC =HTTP://$c$c.jquery.com/jquery-1.10.1.min.js>&下; /脚本>    <脚本SRC =脚本/ Home.js类型=文/ JavaScript的>< / SCRIPT>  < /身体GT;< / HTML> 
asp.net mvc angularjs web api单页应用之CRUD操作

但它给了我这样的:

请告诉我如何从一个JSON对象得到的唯一名字。

解决方案

$ HTTP方法返回一个承诺。

在设计上,承诺调用回调仅一个参数

所以在使用时,。然后(功能(客户){,客户将实际引用一个承诺对象,而不是响应主体允诺对象有这些属性:

数据 - {字符串|对象} - 与变换函数变换的响应体。 状态 - {数} - HTTP响应状态code。 标题 - {功能([headerName])} - 头getter函数 配置 - {}对象 - 这是用来生成请求的配置对象

解决方案:

DemoApp.controller('SimpleController',函数($范围,SimpleFactory){  SimpleFactory.getCustomer()。然后(函数(对象){    $ scope.Customer = object.data.d;  },功能(错误){    //错误处理  });});

此外,您还可以使用成功错误,传递给这些函数的参数被解构再$ P $响应对象psentation传入则方法。

了解更多: $ HTTP文档

I am trying to take data from a database and bind it in a view using AngularJS. For that I wrote a WEM method as follows:

[WebMethod]
public static string getname() {
  SqlHelper sql = new SqlHelper();
  DataTable dt = sql.ExecuteSelectCommand("select cust_F_name from customer");
  Dictionary<string, object> dict = new Dictionary<string, object>();
  object[] arr = new object[dt.Rows.Count];
  for (int i = 0; i <= dt.Rows.Count - 1; i++) {
    arr[i] = dt.Rows[i].ItemArray;
  }
  dict.Add(dt.TableName, arr);
  JavaScriptSerializer json = new JavaScriptSerializer();
  return json.Serialize(dict);
}

And I call it using AngularJS:

var DemoApp = angular.module('DemoApp', []);
DemoApp.factory('SimpleFactory', function ($http) {
  return {
    getCustomer: function () {
      return $http.post('Home.aspx/getname', { name: "" });
    }
  };
});

DemoApp.controller('SimpleController', function ($scope, SimpleFactory) {
  SimpleFactory.getCustomer().then(function(customer){
    $scope.Customer =$.parseJSON( customer.d);
  }, function(error){
    // error handling
  });
});

I bind it in view like this:

<html xmlns="http://www.w3.org/1999/xhtml" data-ng-app="DemoApp">
  <head runat="server">
    <title></title>
  </head>
  <body data-ng-controller="SimpleController">
    <form id="form1" runat="server">
      <div>
        Name<input type="text" data-ng-model="Name" />{{ Name }}
        <ul>
          <li data-ng-repeat="customerName in Customer | filter:Name">{{ customerName }}</li>
        </ul>
      </div>
    </form>
    <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.7/angular.min.js"></script>
    <script src="http://code.jquery.com/jquery-1.10.1.min.js"></script>
    <script src="Script/Home.js" type="text/javascript"></script>
  </body>
</html>

But it gives me this:

Please tell me how to get the only the name from a JSON object.

解决方案

$http methods return a promise.

By design, promises invoke callbacks with only one argument.

so when using .then(function(customer) { , 'customer' will actually reference a promise object rather than the response body. A promise object has these properties:

data – {string|Object} – The response body transformed with the transform functions. status – {number} – HTTP status code of the response. headers – {function([headerName])} – Header getter function. config – {Object} – The configuration object that was used to generate the request.

Solution:

DemoApp.controller('SimpleController', function ($scope, SimpleFactory) {
  SimpleFactory.getCustomer().then(function(object){
    $scope.Customer = object.data.d;
  }, function(error){
    // error handling
  });
});

Also, You can use success and error, The arguments passed into these functions are destructured representation of the response object passed into the then method.

Read more: $http docs