我有一个Web服务（LoginService）我从另一个Web服务（AndroidService）调用。我有一个简单的方法来测试连接，但它无法正常工作。
在LoginService中，我有一个名为getStuff的方法（字符串密码） - 它返回一个JSON字符串。当我通过浏览器直接访问它时，在http://localhost/LoginService/LoginService.svc/getStuff/foo它可以正常工作。当我通过其他Web服务尝试相同的操作时，它会因主题中的异常和InnerException“服务器返回404 Not Found”而失败。
这是LoginService定义：
[WebInvoke(Method = "GET",
ResponseFormat = WebMessageFormat.Json,
BodyStyle = WebMessageBodyStyle.Wrapped,
UriTemplate = "getStuff/{password}")]
string getStuff(string password);
以下是AndroidService的代码：
public string getStuff(string password)
{
string endpoint_address = "http://localhost/LoginService/LoginService.svc/";
BasicHttpBinding binding = new BasicHttpBinding();
EndpointAddress address = new EndpointAddress(endpoint_address);
client = new LoginServiceClient(binding, address);
return client.getStuff(password);
}
AndroidService定义：
[OperationContract]
[WebInvoke(Method = "GET",
ResponseFormat = WebMessageFormat.Json,
BodyStyle = WebMessageBodyStyle.Wrapped,
UriTemplate = "getStuff/{password}")]
string getStuff(string password);
以下是完整的例外情况：
Request Error
The server encountered an error processing the request. The exception message is 'There was no endpoint listening at http://localhost/LoginService/LoginService.svc that could accept the message. This is often caused by an incorrect address or SOAP action. See InnerException, if present, for more details.'. See server logs for more details. The exception stack trace is:
Server stack trace: at System.ServiceModel.Channels.HttpChannelUtilities.ProcessGetResponseWebException(WebException webException, HttpWebRequest request, HttpAbortReason abortReason) at System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.HttpChannelRequest.WaitForReply(TimeSpan timeout) at System.ServiceModel.Channels.RequestChannel.Request(Message message, TimeSpan timeout) at System.ServiceModel.Dispatcher.RequestChannelBinder.Request(Message message, TimeSpan timeout) at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout) at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation) at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message) Exception rethrown at [0]: at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg) at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type) at AndroidServiceSpace.LoginServiceReference.ILoginService.getStuff(String password) at AndroidServiceSpace.LoginServiceReference.LoginServiceClient.getStuff(String password) in C:\AndroidServiceUUS\trunk\services\AndroidService\AndroidService\Service References\LoginServiceReference\Reference.cs:line 264 at AndroidServiceSpace.AndroidService.getStuff(String password) in C:\AndroidServiceUUS\trunk\services\AndroidService\AndroidService\AndroidService.svc.cs:line 77 at SyncInvokegetStuff(Object , Object[] , Object[] ) at System.ServiceModel.Dispatcher.SyncMethodInvoker.Invoke(Object instance, Object[] inputs, Object[]& outputs) at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage41(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage4(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage31(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage3(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage2(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage11(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage1(MessageRpc& rpc) at System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean isOperationContextSet)
我的web.config：
<?xml version="1.0"?>
<configuration>
<configSections>
</configSections>
<system.web>
<compilation debug="true" targetFramework="4.0" />
</system.web>
<system.serviceModel>
<bindings >
<webHttpBinding>
<binding name="BasicHttpBinding_UserService" maxBufferSize="2147483647"
maxReceivedMessageSize="2147483647">
<security mode="None" />
</binding>
</webHttpBinding>
</bindings>
<client>
<endpoint address="http://localhost/LoginService/LoginService.svc" binding="webHttpBinding"
bindingConfiguration="BasicHttpBinding_UserService" contract="LoginServiceReference.ILoginService" />
</client>
<services>
<service behaviorConfiguration="AndroidBehaviour" name="AndroidServiceSpace.AndroidService">
<endpoint address="" behaviorConfiguration="web" binding="webHttpBinding"
contract="AndroidServiceSpace.IAndroidService" />
</service>
</services>
<behaviors>
<serviceBehaviors>
<behavior name="AndroidBehaviour">
<serviceMetadata httpGetEnabled="True" />
<serviceDebug includeExceptionDetailInFaults="true" />
</behavior>
<behavior>
<!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment -->
<serviceMetadata httpGetEnabled="true"/>
<!-- To receive exception details in faults for debugging purposes, set the value below to true. Set to false before deployment to avoid disclosing exception information -->
<serviceDebug includeExceptionDetailInFaults="true"/>
</behavior>
</serviceBehaviors>
<endpointBehaviors>
<behavior name="web">
<webHttp />
</behavior>
</endpointBehaviors>
</behaviors>
<serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
</system.serviceModel>
<system.webServer>
<modules runAllManagedModulesForAllRequests="true"/>
</system.webServer>
</configuration>
移动LoginService删除服务器以获取Fiddler请求：
# Result Protocol Host URL Body Caching Content-Type Process Comments Custom
4 502 HTTP 10.0.4.12:50271 /AndroidService.svc/getStuff/ggnore 512 text/html; charset=UTF-8 chrome:4132
5 502 HTTP 10.0.4.12:50271 /favicon.ico 512 text/html; charset=UTF-8 chrome:4132
6 400 HTTP localhost:50271 /AndroidService.svc/getStuff/ggnore 4 565 private text/html chrome:4132
7 404 HTTP localhost:50271 /favicon.ico 2 310 private text/html; charset=utf-8 chrome:4132
8 200 HTTP Tunnel to clients4.google.com:443 0 chrome:4132
9 404 HTTP maker.server /LoginService/LoginService.svc/$metadata 1 565 private text/html; charset=UTF-8 vwdexpress:5772
10 200 HTTP maker.server /LoginService/LoginService.svc 2 790 private text/html; charset=UTF-8 vwdexpress:5772
11 200 HTTP maker.server /LoginService/LoginService.svc/mex 10 195 private application/soap+xml; charset=utf-8 vwdexpress:5772
12 404 HTTP maker.server /LoginService/LoginService.svc 1 565 private text/html; charset=UTF-8 vwdexpress:5772
13 200 HTTP maker.server /LoginService/LoginService.svc?disco 289 private text/xml; charset=UTF-8 vwdexpress:5772
14 200 HTTP maker.server /LoginService/LoginService.svc?wsdl 3 902 private text/xml; charset=UTF-8 vwdexpress:5772
15 200 HTTP maker.server /LoginService/LoginService.svc?xsd=xsd0 1 969 private text/xml; charset=UTF-8 vwdexpress:5772
16 200 HTTP maker.server /LoginService/LoginService.svc?xsd=xsd2 1 521 private text/xml; charset=UTF-8 vwdexpress:5772
17 200 HTTP maker.server /LoginService/LoginService.svc?xsd=xsd1 2 273 private text/xml; charset=UTF-8 vwdexpress:5772
18 200 HTTP localhost:50271 / 2 756 text/html; charset=utf-8 chrome:4132
19 404 HTTP localhost:50271 /favicon.ico 2 310 private text/html; charset=utf-8 chrome:4132
20 400 HTTP localhost:50271 /AndroidService.svc/getStuff/ggnore 4 565 private text/html chrome:4132
21 404 HTTP localhost:50271 /favicon.ico 2 310 private text/html; charset=utf-8 chrome:4132
答案 0 :(得分：1)
与您的情景类似：
login服务：
[OperationContract]
[WebGet(ResponseFormat = WebMessageFormat.Json,UriTemplate = "getStuff/{password}")]
string getStuff(string password);
AndroidService：
[OperationContract]
[WebGet(ResponseFormat = WebMessageFormat.Json,UriTemplate = "getStuff/{password}")]
string getStuff(string password);
现在我的LoginService实现：
public string getStuff(string password)
{
if ( password == "test")
return "Success";
else
return "Failure";
}
现在我的AndroidService实现：
public string getStuff(string password)
{
// NOTE: Below 2 lines to acccess the login service via SOAP
// assuming that you have added a service reference to your project and added the needed config entries in you androidservice config file
LoginServiceClient client = new LoginServiceClient(binding, address);
return client.getStuff(password);
// NOTE: Below code to access it RESTfully
string responseMessage = null;
var request = WebRequest.Create("http://localhost/LoginService/LoginService.svc/getStuff/" + password) as HttpWebRequest;
if (request != null)
{
request.ContentType = "application/json";
request.Method = "GET";
var response = request.GetResponse() as HttpWebResponse;
if(response.StatusCode == HttpStatusCode.OK)
{
Stream responseStream = response.GetResponseStream();
if (responseStream != null)
{
var reader = new StreamReader(responseStream);
responseMessage = reader.ReadToEnd();
}
}
else
{
responseMessage = response.StatusDescription;
}
}
if (responseMessage == "Success")
{
return "Success";
}
else
{
return "Failure";
}
}
现在来自Fiddler，我执行以下请求（以Raw显示）
GET http://localhost:50271/AndroidService.svc/getStuff/ggnore HTTP/1.1
Host: localhost
Content-Type: application/json
Web.config如图所示：
<?xml version="1.0"?>
<configuration>
<configSections>
</configSections>
<system.web>
<compilation debug="true" targetFramework="4.0" />
</system.web>
<system.serviceModel>
<bindings >
<webHttpBinding>
<binding maxBufferSize="2147483647"
maxReceivedMessageSize="2147483647">
<security mode="None" />
</binding>
</webHttpBinding>
<basicHttpBinding>
<binding name="BasicHttpBinding_ILoginService" closeTimeout="00:01:00"
openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard"
maxBufferSize="65536" maxBufferPoolSize="524288" maxReceivedMessageSize="65536"
messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"
useDefaultWebProxy="true">
<readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
maxBytesPerRead="4096" maxNameTableCharCount="16384" />
<security mode="None">
<transport clientCredentialType="None" proxyCredentialType="None"
realm="" />
<message clientCredentialType="UserName" algorithmSuite="Default" />
</security>
</binding>
</basicHttpBinding>
</bindings>
<client>
<endpoint address="http://maker.server/LoginService/LoginService.svc"
binding="basicHttpBinding" bindingConfiguration="BasicHttpBinding_ILoginService"
contract="ILoginService" name="BasicHttpBinding_ILoginService" />
</client>
<services>
<service behaviorConfiguration="AndroidBehaviour" name="AndroidServiceSpace.AndroidService">
<endpoint address="" behaviorConfiguration="web" binding="webHttpBinding"
contract="AndroidServiceSpace.IAndroidService" />
</service>
</services>
<behaviors>
<serviceBehaviors>
<behavior name="AndroidBehaviour">
<serviceMetadata httpGetEnabled="True" />
<serviceDebug includeExceptionDetailInFaults="true" />
</behavior>
<behavior>
<!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment -->
<serviceMetadata httpGetEnabled="true"/>
<!-- To receive exception details in faults for debugging purposes, set the value below to true. Set to false before deployment to avoid disclosing exception information -->
<serviceDebug includeExceptionDetailInFaults="true"/>
</behavior>
</serviceBehaviors>
<endpointBehaviors>
<behavior name="web">
<webHttp />
</behavior>
</endpointBehaviors>
</behaviors>
<serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
</system.serviceModel>
<system.webServer>
<modules runAllManagedModulesForAllRequests="true"/>
</system.webServer>
</configuration>
注意：我假设您的LoginService作为单独的RESTful服务托管，因此使用WebRequestClass访问它。如果LoginService在同一个项目中，那么为LoginService定义一个类似于AndroidService的服务元素，这应该就足够了。