基于自托管WCF服务的CORS
我正在尝试在我的WCF服务中实现CORS suppor 我从你那里得到一些密码 错误：类只能从其他类继承 如何继承IDispatchMessageInspector基于自托管WCF服务的CORS,wcf,self,hosted,idispatchmessageinspector,Wcf,Self,Hosted,Idispatchmessageinspector,我正在尝试在我的WCF服务中实现CORS suppor 我从你那里得到一些密码 错误：类只能从其他类继承 如何继承IDispatchMessageInspector 谢谢我做了一个演示，希望对你有用。 参考。 using System; using System.Collections.Generic; using System.ServiceModel; using System.ServiceModel.Channels; using System.ServiceModel.Configu
谢谢我做了一个演示，希望对你有用。
参考。
using System;
using System.Collections.Generic;
using System.ServiceModel;
using System.ServiceModel.Channels;
using System.ServiceModel.Configuration;
using System.ServiceModel.Description;
using System.ServiceModel.Dispatcher;
using System.ServiceModel.Web;
class Program
{
static void Main(string[] args)
{
using (ServiceHost sh = new ServiceHost(typeof(MyService)))
{
sh.Open();
Console.WriteLine("service is ready...");
Console.ReadLine();
sh.Close();
}
}
}
[ServiceContract(Namespace = "mydomain")]
public interface IService
{
[OperationContract]
[WebGet(ResponseFormat =WebMessageFormat.Json)]
string SayHello();
}
public class MyService : IService
{
public string SayHello()
{
return $"Hello, busy World,{DateTime.Now.ToShortTimeString()}";
}
}
public class CustomHeaderMessageInspector : IDispatchMessageInspector
{
Dictionary<string, string> requiredHeaders;
public CustomHeaderMessageInspector(Dictionary<string, string> headers)
{
requiredHeaders = headers ?? new Dictionary<string, string>();
}
public object AfterReceiveRequest(ref Message request, IClientChannel channel, InstanceContext instanceContext)
{
string displayText = $"Server has received the following message:\n{request}\n";
Console.WriteLine(displayText);
return null;
}
public void BeforeSendReply(ref Message reply, object correlationState)
{
var httpHeader = reply.Properties["httpResponse"] as HttpResponseMessageProperty;
foreach (var item in requiredHeaders)
{
httpHeader.Headers.Add(item.Key, item.Value);
}
string displayText = $"Server has replied the following message:\n{reply}\n";
Console.WriteLine(displayText);
}
}
public class CustomContractBehaviorAttribute : BehaviorExtensionElement, IEndpointBehavior
{
public override Type BehaviorType => typeof(CustomContractBehaviorAttribute);
public void AddBindingParameters(ServiceEndpoint endpoint, BindingParameterCollection bindingParameters)
{
}
public void ApplyClientBehavior(ServiceEndpoint endpoint, ClientRuntime clientRuntime)
{
}
public void ApplyDispatchBehavior(ServiceEndpoint endpoint, EndpointDispatcher endpointDispatcher)
{
var requiredHeaders = new Dictionary<string, string>();
requiredHeaders.Add("Access-Control-Allow-Origin", "*");
requiredHeaders.Add("Access-Control-Request-Method", "POST,GET,PUT,DELETE,OPTIONS");
requiredHeaders.Add("Access-Control-Allow-Headers", "X-Requested-With,Content-Type");
endpointDispatcher.DispatchRuntime.MessageInspectors.Add(new CustomHeaderMessageInspector(requiredHeaders));
}
public void Validate(ServiceEndpoint endpoint)
{
}
protected override object CreateBehavior()
{
return new CustomContractBehaviorAttribute();
}
}
<script>
$(function(){
$.ajax({
method:"Get",
url: "http://10.157.13.69:5638/sayhello",
dataType:"json",
success: function(data){
$("#main").html(data);
}
})
})
</script>
using System;
using System.Collections.Generic;
using System.ServiceModel;
using System.ServiceModel.Channels;
using System.ServiceModel.Configuration;
using System.ServiceModel.Description;
using System.ServiceModel.Dispatcher;
using System.ServiceModel.Web;
class Program
{
static void Main(string[] args)
{
using (ServiceHost sh = new ServiceHost(typeof(MyService)))
{
sh.Open();
Console.WriteLine("service is ready...");
Console.ReadLine();
sh.Close();
}
}
}
[ServiceContract(Namespace = "mydomain")]
public interface IService
{
[OperationContract]
[WebGet(ResponseFormat =WebMessageFormat.Json)]
string SayHello();
}
public class MyService : IService
{
public string SayHello()
{
return $"Hello, busy World,{DateTime.Now.ToShortTimeString()}";
}
}
public class CustomHeaderMessageInspector : IDispatchMessageInspector
{
Dictionary<string, string> requiredHeaders;
public CustomHeaderMessageInspector(Dictionary<string, string> headers)
{
requiredHeaders = headers ?? new Dictionary<string, string>();
}
public object AfterReceiveRequest(ref Message request, IClientChannel channel, InstanceContext instanceContext)
{
string displayText = $"Server has received the following message:\n{request}\n";
Console.WriteLine(displayText);
return null;
}
public void BeforeSendReply(ref Message reply, object correlationState)
{
var httpHeader = reply.Properties["httpResponse"] as HttpResponseMessageProperty;
foreach (var item in requiredHeaders)
{
httpHeader.Headers.Add(item.Key, item.Value);
}
string displayText = $"Server has replied the following message:\n{reply}\n";
Console.WriteLine(displayText);
}
}
public class CustomContractBehaviorAttribute : BehaviorExtensionElement, IEndpointBehavior
{
public override Type BehaviorType => typeof(CustomContractBehaviorAttribute);
public void AddBindingParameters(ServiceEndpoint endpoint, BindingParameterCollection bindingParameters)
{
}
public void ApplyClientBehavior(ServiceEndpoint endpoint, ClientRuntime clientRuntime)
{
}
public void ApplyDispatchBehavior(ServiceEndpoint endpoint, EndpointDispatcher endpointDispatcher)
{
var requiredHeaders = new Dictionary<string, string>();
requiredHeaders.Add("Access-Control-Allow-Origin", "*");
requiredHeaders.Add("Access-Control-Request-Method", "POST,GET,PUT,DELETE,OPTIONS");
requiredHeaders.Add("Access-Control-Allow-Headers", "X-Requested-With,Content-Type");
endpointDispatcher.DispatchRuntime.MessageInspectors.Add(new CustomHeaderMessageInspector(requiredHeaders));
}
public void Validate(ServiceEndpoint endpoint)
{
}
protected override object CreateBehavior()
{
return new CustomContractBehaviorAttribute();
}
}
<script>
$(function(){
$.ajax({
method:"Get",
url: "http://10.157.13.69:5638/sayhello",
dataType:"json",
success: function(data){
$("#main").html(data);
}
})
})
</script>
类程序
{
静态void Main（字符串[]参数）
{
使用（ServiceHost sh=新ServiceHost（typeof（MyService）））
{
sh.Open（）；
Console.WriteLine（“服务准备就绪…”）；
Console.ReadLine（）；
sh.Close（）；
}
}
}
[ServiceContract（Namespace=“mydomain”）]
公共接口设备
{
[经营合同]
[WebGet（ResponseFormat=WebMessageFormat.Json）]
字符串SayHello（）；
}
公共类MyService:IService
{
公共字符串SayHello（）
{
return$“你好，忙碌的世界，{DateTime.Now.ToShortTimeString（）}”；
}
}
公共类CustomHeaderMessageInspector:IDispatchMessageInspector
{
词典要求的标题；
public CustomerHeaderMessageInspector（字典标题）
{
requiredHeaders=标题？？新字典（）；
}
接收请求后的公共对象（ref消息请求、IClientChannel通道、InstanceContext InstanceContext）
{
string displayText=$“服务器已收到以下消息：\n{request}\n”；
Console.WriteLine（显示文本）；
返回null；
}
SendReply之前的公共无效（参考消息回复，对象关联状态）
{
var httpHeader=reply.Properties[“httpResponse”]作为HttpResponseMessageProperty；
foreach（RequiredHeader中的var项）
{
httpHeader.Headers.Add（item.Key，item.Value）；
}
string displayText=$“服务器已回复以下消息：\n{reply}\n”；
Console.WriteLine（显示文本）；
}
}
公共类CustomContractBehaviorAttribute:BehaviorExtensionElement，IEndpointBehavior
{
公共重写类型BehaviorType=>typeof（CustomContractBehaviorAttribute）；
public void AddBindingParameters（ServiceEndpoint端点、BindingParameterCollection bindingParameters）
{
}
public void ApplyClientBehavior（ServiceEndpoint端点、ClientRuntime ClientRuntime）
{
}
公共无效ApplyDispatchBehavior（ServiceEndpoint端点、EndpointDispatcher端点Dispatcher）
{
var requiredHeaders=新字典（）；
requiredHeaders.Add（“访问控制允许来源”、“*”）；
添加（“访问控制请求方法”、“POST、GET、PUT、DELETE、OPTIONS”）；
requiredHeaders.Add（“访问控制允许头”，“X请求的，内容类型”）；
endpointDispatcher.DispatcheRuntime.MessageInspectors.Add（新的CustomHeaderMessageInspector（requiredHeaders））；
}
公共void验证（ServiceEndpoint）
{
}
受保护的重写对象CreateBehavior（）
{
返回新的CustomContractBehaviorAttribute（）；
}
}
<system.serviceModel>
<services>
<service name="Server3.MyService" behaviorConfiguration="mybahavior">
<endpoint address="" binding="webHttpBinding" contract="Server3.IService" behaviorConfiguration="rest"></endpoint>
<endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"></endpoint>
<host>
<baseAddresses>
<add baseAddress="http://localhost:5638"/>
</baseAddresses>
</host>
</service>
</services>
<behaviors>
<serviceBehaviors>
<behavior name="mybahavior">
<serviceMetadata httpGetEnabled="true" httpsGetEnabled="true"/>
<serviceDebug includeExceptionDetailInFaults="true"/>
</behavior>
</serviceBehaviors>
<endpointBehaviors>
<behavior name="rest">
<webHttp />
<CorsBehavior />
</behavior>
</endpointBehaviors>
</behaviors>
<extensions>
<behaviorExtensions>
<add name="CorsBehavior" type="Server3.CustomContractBehaviorAttribute, Server3" />
</behaviorExtensions>
</extensions>
</system.serviceModel>
如果有什么我可以帮忙的，请随时告诉我。您应该补充
Dim method = httpRequest.Method
If method.ToLower() = "options" Then httpResponse.StatusCode = System.Net.HttpStatusCode.NoContent
在BeforeSendReply结尾处的示例中，否则至少POST请求将不起作用。是否包含对System.ServiceModel.Dispatcheries的引用。包括System.ServiceModel.Dispatcher我唯一能从@mahlatse获得错误信息的参考信息，谢谢。但我对网页上提供的解决方案一无所知