WCF for Json / Jquery获取状态列表.. [英] WCF for Json /Jquery to get a list of states..

问题描述

我正在尝试从WCF返回通用列表。但返回未知错误。任何人都可以帮我解决这个问题。


IService.cs中的


==============

[ServiceContract]

公共接口IServiceLP18

{

[OperationContract]

[WebInvoke（Method =POST） ，BodyStyle = WebMessageBodyStyle.Wrapped，ResponseFormat = WebMessageFormat.Json）]

List< lp18wcf.servicelp18.statecls> GetAllStates（）;

}


ServiceLP18中的


=========== ==

I am trying to return a generic list from a WCF. But return an "unknown" error. Can anyone help me out to solve this.

in IService.cs
==============
[ServiceContract]
public interface IServiceLP18
{
[OperationContract]
[WebInvoke(Method = "POST", BodyStyle = WebMessageBodyStyle.Wrapped, ResponseFormat = WebMessageFormat.Json)]
List<lp18wcf.servicelp18.statecls> GetAllStates();
}

in ServiceLP18
=============

public class ServiceLP18 : IServiceLP18
{
  public class StateCls
        {
            public string StateID;           
            public string StateName;
        }
        public List<StateCls> GetAllStates()
        {
            List<StateCls> StateList = new List<StateCls>();
            for (int i = 0; i < 10; i++)
            {
                StateCls tempRow = new StateCls();               
                tempRow.StateID = i.ToString();
                tempRow.StateName = "Sate " + i.ToString();
                StateList.Add(tempRow);
            }          
            return StateList;
        }
}

========================= ===========





在calling.html页面

== ==================

====================================


In calling.html page
====================

function CallGetStates() {
           $.ajax({
               Type : "POST",
               url: "http://localhost:50609/ServiceLP18.svc/GetAllStates", 
               data: "{}", 
               contentType: "application/json; charset=utf-8", 
               dataType: "jsonp", 
               processdata: true, 
               success: function (response) {
                   var statess = response.d;
                   $.each(statess, function (index, LpStates) {
                       alert(LpStates.StateName);
                   });                   
               },
               error: ServiceFailed// When Service call fails
           });
       }

推荐答案

.ajax（{
类型： POST，
url： http：// localhost：50609 / ServiceLP18.svc / GetAllStates，
data： {}，
contentType： application / json; charset = utf-8 ，
dataType： jsonp，
processdata： true ，
成功：功能（响应）{
var statess = response.d;

.ajax({ Type : "POST", url: "http://localhost:50609/ServiceLP18.svc/GetAllStates", data: "{}", contentType: "application/json; charset=utf-8", dataType: "jsonp", processdata: true, success: function (response) { var statess = response.d;

.each（statess， function （i ndex，LpStates）{
alert（LpStates.StateName）;
}）;
}，
错误：ServiceFailed // 服务调用失败时
}）;
}

.each(statess, function (index, LpStates) { alert(LpStates.StateName); }); }, error: ServiceFailed// When Service call fails }); }

JSON版本不起作用，因为它是一个跨源调用（参见：同源策略： http://en.wikipedia.org/wiki/Same_origin_policy [ ^ ]）。 Google URL缩短程序是否具有JSON-P API？它必须明确支持它。 （另外，JSON-P不能POST;本质上它是GET。）



更新：看起来他们不支持它但是，有一个开放的增强请求。

https： //code.google.com/p/yourls/issues/detail?id=744 [ ^ ]

The JSON version doesn''t work because it''s a cross-origin call (see: Same Origin Policy: http://en.wikipedia.org/wiki/Same_origin_policy[^]). Does the Google URL shortener have a JSON-P API? It has to explicitly support it. (Also, JSON-P can''t be POST; by its nature it''s a GET.)

Update: Looks like they don''t support it yet, but there''s an open enhancement request.
https://code.google.com/p/yourls/issues/detail?id=744[^]

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