我已将Web服务配置为使用此博客中描述的Json:http://www.west-wind.com/weblog/posts/164419.aspx和其他各种博客,但我无法创建客户端来使用此服务。我尝试了各种各样的东西,但总是有无意义的例外。实现(我应该添加的WCF)客户端的正确方法是什么?
答案 0 :(得分:43)
似乎缺少关于如何为JSON REST服务编写WCF客户端的示例。每个人似乎都使用WCF来实现服务,但几乎没有用于编写客户端。所以这是一个相当完整的服务示例(实现GET和POST请求)和客户端。
服务界面
[ServiceContract]
public interface IService1
{
[OperationContract]
[WebGet(ResponseFormat = WebMessageFormat.Json,
BodyStyle = WebMessageBodyStyle.Bare,
UriTemplate = "/getcar/{id}")]
Car GetCar(string id);
[OperationContract]
[WebInvoke(RequestFormat = WebMessageFormat.Json,
ResponseFormat = WebMessageFormat.Json,
BodyStyle = WebMessageBodyStyle.Bare,
UriTemplate = "/updatecar/{id}")]
Car UpdateCar(string id, Car car);
}
服务数据结构
[DataContract]
public class Car
{
[DataMember]
public int ID { get; set; }
[DataMember]
public string Make { get; set; }
}
服务实施
public class Service1 : IService1
{
public Car GetCar(string id)
{
return new Car { ID = int.Parse(id), Make = "Porsche" };
}
public Car UpdateCar(string f, Car car)
{
return car;
}
}
服务标记
<%@ ServiceHost Language="C#" Service="JSONService.Service1"
CodeBehind="Service1.svc.cs"
Factory="System.ServiceModel.Activation.WebServiceHostFactory" %>
<强>的Web.config 强>
<?xml version="1.0"?>
<configuration>
<system.web>
<compilation debug="true" targetFramework="4.0" />
</system.web>
<system.serviceModel>
<behaviors>
<serviceBehaviors>
<behavior>
<serviceMetadata httpGetEnabled="true"/>
</behavior>
</serviceBehaviors>
</behaviors>
<serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
</system.serviceModel>
<system.webServer>
<modules runAllManagedModulesForAllRequests="true"/>
</system.webServer>
</configuration>
现在是客户。它重用了接口IService1
和类Car
。此外,还需要以下代码和配置。
<强>的App.config 强>
<?xml version="1.0"?>
<configuration>
<system.serviceModel>
<behaviors>
<endpointBehaviors>
<behavior name="webby">
<webHttp/>
</behavior>
</endpointBehaviors>
</behaviors>
<client>
<endpoint address="http://localhost:57211/Service1.svc" name="Service1" binding="webHttpBinding" contract="JSONService.IService1" behaviorConfiguration="webby"/>
</client>
</system.serviceModel>
</configuration>
<强> Program.cs的强>
public class Service1Client : ClientBase<IService1>, IService1
{
public Car GetCar(string id)
{
return base.Channel.GetCar(id);
}
public Car UpdateCar(string id, Car car)
{
return base.Channel.UpdateCar(id, car);
}
}
class Program
{
static void Main(string[] args)
{
Service1Client client = new Service1Client();
Car car = client.GetCar("1");
car.Make = "Ferrari";
car = client.UpdateCar("1", car);
}
}
玩得开心。
答案 1 :(得分:-1)
有什么例外?它们对你来说可能毫无意义,但是这里的某些人可能会发现它们对诊断你的问题很有帮助。我使用jQuery向WCF服务发出ajax请求,并且设置通常如下所示:
$(document).ready(function() {
$.ajaxSetup({
type: "POST",
processData: true,
contentType: "application/json",
timeout: 5000,
dataType: "json"
});
var data = { "value": 5 };
AjaxPost("GetData", data, OnEndGetData, OnError);
});
function OnEndGetData(result) {
alert(result.GetDataResult);
}
function OnError(msg) {
alert(msg);
}
function AjaxPost(method, data, callback, error) {
var stringData = JSON.stringify(data);
var url = "Service1.svc/" + method;
$.ajax({
url: url,
data: stringData,
success: function(msg) {
callback(msg);
},
error: error
});
}
JSON.stringify()可以在json.org脚本中找到:http://www.json.org/js.html,我的GetData方法的sig如下所示:
[OperationContract]
[WebInvoke(Method = "POST", BodyStyle = WebMessageBodyStyle.Wrapped, ResponseFormat = WebMessageFormat.Json)]
string GetData(int value);