Question

我正在尝试在Angular JS Application中检索单个列记录。我正在输入正确的文本到输入字段但问题是数据读取器对象总是返回false。

这是界面。

[OperationContract的]

[WebInvoke(Method = "GET",
RequestFormat = WebMessageFormat.Json,
ResponseFormat = WebMessageFormat.Json,
UriTemplate = "/GetCustomers/{Account_Holder_Last_Name}")]
string GetCustomers(string Account_Holder_Last_Name);

这是实施。

 public string GetCustomers(string Account_Holder_Last_Name)
        {

            List<object> customers = new List<object>();
            string sql = "SELECT * FROM Current_Account_Holder_Details WHERE Account_Holder_Last_Name =@Account_Holder_Last_Name";
            using (SqlConnection conn = new SqlConnection())
            {
                conn.ConnectionString = ConfigurationManager.ConnectionStrings["DBCS"].ConnectionString;
                using (SqlCommand cmd = new SqlCommand(sql))
                {
                    cmd.Parameters.AddWithValue("@Account_Holder_Last_Name", Account_Holder_Last_Name);
                    cmd.Connection = conn;
                    conn.Open();
                    using (SqlDataReader sdr = cmd.ExecuteReader())
                    {
                        if (sdr.HasRows)**//Always returns false on this line**
                        {
                            while (sdr.Read())
                            {

                                customers.Add(new
                                {
                                    Tittle = sdr["Tittle"],
                                    Account_Holder_First_Name = sdr["Account_Holder_First_Name"],
                                    Account_Holder_Last_Name = sdr["Account_Holder_Last_Name"],
                                    Account_Holder_DOB = sdr["Account_Holder_DOB"],
                                    Account_Holder_House_No = sdr["Account_Holder_House_No"],
                                    Account_Holder_Street_Name = sdr["Account_Holder_Street_Name"],
                                    Account_Holder_Post_Code = sdr["Account_Holder_Post_Code"],

                                    Account_Holder_Occupation = sdr["Account_Holder_Occupation"],
                                    Account_Number = sdr["Account_Number"]



                                });
                            }

                        }

                    }
                    conn.Close();
                }

                return (new JavaScriptSerializer().Serialize(customers));
            }

        }

这是Angular js Code ..

@{
    Layout = null;
}

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title></title>
</head>
<body>
    <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.9/angular.min.js"></script>
    <script type="text/javascript">
        var app = angular.module('MyApp', [])
        app.controller('MyController', function ($scope, $http, $window) {
            $scope.IsVisible = false;
            $scope.Search = function () {
                var post = $http({
                    method: "GET",
                    url: "http://localhost:52098/HalifaxIISService.svc/GetCustomers/{Account_Holder_Last_Name}",
                    dataType: 'json',
                    data: { Account_Holder_Last_Name: $scope.Account_Holder_Last_Name },

                    headers: {
                        'Accept': 'application/json, text/javascript, */*; q=0.01',
                        'Content-Type': 'application/json; charset=utf-8'
                    }
                });

                post.success(function (data, status) {
                    $scope.Customers = eval(data.d);
                    $scope.IsVisible = true;
                });

                post.error(function (data, status) {
                    $window.alert(data.Message);
                });
            }
        });
    </script>
    <div ng-app="MyApp" ng-controller="MyController">
        Name:
        <input type="text" ng-model="Account_Holder_Last_Name" />
        <input type="button" value="Submit" ng-click="Search(Account_Holder_Last_Name)" />
        <hr />
        <table cellpadding="0" cellspacing="0" ng-show="IsVisible">
            <tr style="height: 30px; background-color: skyblue; color: maroon;">
                <th> Tittle</th>
                <th>First Name</th>
                <th> Last Name</th>
                <th>  DOB </th>
                <th> House No</th>
                <th> Street Name</th>
                <th>Post Code</th>
                <th> Occupation</th>
                <th>Account Number</th>


            </tr>
            <tbody ng-repeat="m in Customers">
                <tr>
                    <td>{{m.Tittle}}</td>
                    <td>{{m.Account_Holder_First_Name}}</td>
                    <td>{{m.Account_Holder_Last_Name}}</td>

                    <td>{{m.Account_Holder_DOB}}</td>
                    <td>{{m.Account_Holder_House_No}}</td>
                    <td>{{m.Account_Holder_Street_Name}}</td>
                    <td>{{m.Account_Holder_Post_Code}}</td>

                    <td>{{m.Account_Holder_Occupation}}</td>
                    <td>{{m.Account_Number}}</td>
                </tr>
            </tbody>
        </table>
    </div>
</body>
</html>

这是Sql脚本。

CREATE TABLE [dbo].[Current_Account_Holder_Details](
    [Account_Holder_Id] [int] IDENTITY(1,1) NOT NULL,
    [Tittle] [nvarchar](50) NOT NULL,
    [Account_Holder_First_Name] [nvarchar](50) NOT NULL,
    [Account_Holder_Last_Name] [nvarchar](50) NOT NULL,
    [Account_Holder_DOB] [nvarchar](50) NULL,
    [Account_Holder_House_No] [nvarchar](50) NOT NULL,
    [Account_Holder_Street_Name] [nvarchar](50) NOT NULL,
    [Account_Holder_Post_Code] [nvarchar](50) NOT NULL,
    [Account_Holder_Occupation] [nvarchar](50) NOT NULL,
    [Account_Number] [int] NULL,
)

这是数据库记录。

这是VS2015中的屏幕截图。这是我运行应用程序时的结果。

Answer 1

url: "http://localhost:52098/HalifaxIISService.svc/GetCustomers/{Account_Holder_Last_Name}",
dataType: 'json',
data: { Account_Holder_Last_Name: $scope.Account_Holder_Last_Name },

也许应该是：

url: "http://localhost:52098/HalifaxIISService.svc/GetCustomers/" + encodeURIComponent($scope.Account_Holder_Last_Name),
dataType: 'json'

这将确保Account_Holder_Last_Name在服务器端正确设置。

ADO.NET Reader始终使用Wcf服务返回False

1 个答案: