我有一个客户端控制台应用程序与WCF服务通信,我收到以下错误: “服务器没有提供有意义的回复;这可能是由于合同不匹配,过早的会话关闭或内部服务器错误造成的。”
我认为这是因为合同不匹配但我无法弄清楚原因。该服务本身运行良好,两个部分一起工作,直到我添加了模拟代码。
任何人都可以看到有什么问题吗?
这是客户端,全部用代码完成:
NetTcpBinding binding = new NetTcpBinding();
binding.Security.Mode = SecurityMode.Message;
binding.Security.Message.ClientCredentialType = MessageCredentialType.Windows;
EndpointAddress endPoint = new EndpointAddress(new Uri("net.tcp://serverName:9990/TestService1"));
ChannelFactory<IService1> channel = new ChannelFactory<IService1>(binding, endPoint);
channel.Credentials.Windows.AllowedImpersonationLevel = TokenImpersonationLevel.Impersonation;
IService1 service = channel.CreateChannel();
这是WCF服务的配置文件:
<configuration>
<system.serviceModel>
<bindings>
<netTcpBinding>
<binding name="MyBinding">
<security mode="Message">
<transport clientCredentialType="Windows"/>
<message clientCredentialType="Windows" />
</security>
</binding>
</netTcpBinding>
</bindings>
<behaviors>
<serviceBehaviors>
<behavior name="WCFTest.ConsoleHost2.Service1Behavior">
<serviceMetadata httpGetEnabled="true" />
<serviceDebug includeExceptionDetailInFaults="true" />
<serviceAuthorization impersonateCallerForAllOperations="true" />
</behavior>
</serviceBehaviors>
</behaviors>
<services>
<service behaviorConfiguration="WCFTest.ConsoleHost2.Service1Behavior"
name="WCFTest.ConsoleHost2.Service1">
<endpoint address="" binding="wsHttpBinding" contract="WCFTest.ConsoleHost2.IService1">
<identity>
<dns value="" />
</identity>
</endpoint>
<endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
<endpoint binding="netTcpBinding" bindingConfiguration="MyBinding"
contract="WCFTest.ConsoleHost2.IService1" />
<host>
<baseAddresses>
<add baseAddress="http://serverName:9999/TestService1/" />
<add baseAddress="net.tcp://serverName:9990/TestService1/" />
</baseAddresses>
</host>
</service>
</services>
</system.serviceModel>
</configuration>
答案 0 :(得分:32)
其他可能的原因:
[IgnoreDataMember]
属性应用于字段或属性。测试内容:
Configure WCF tracing至少存在重大错误或异常。如果启用任何进一步的跟踪,请注意观察文件大小。在许多情况下,这将提供一些非常有用的信息。
只需在<configuration>
ON THE SERVER 中的web.config
下添加此项。如果目录不存在,请创建log
目录。
<system.diagnostics>
<sources>
<source name="System.ServiceModel"
switchValue="Error, Critical"
propagateActivity="true">
<listeners>
<add name="traceListener"
type="System.Diagnostics.XmlWriterTraceListener"
initializeData= "c:\log\WCF_Errors.svclog" />
</listeners>
</source>
</sources>
</system.diagnostics>
ExceptionDetail,可能由。创建 IncludeExceptionDetailInFaults = TRUE, 其价值是: System.InvalidOperationException:在对a的调用中抛出异常 WSDL导出扩展: System.ServiceModel.Description.DataContractSerializerOperationBehavior 合同:http://tempuri.org/:IOrderPipelineService ----&GT; System.Runtime.Serialization.InvalidDataContractException: 的类型 'RR.MVCServices.PipelineStepResponse' 无法序列化。考虑标记 它与DataContractAttribute 属性,并标记其所有 你想用序列化的成员 DataMemberAttribute属性。
答案 1 :(得分:8)
对我来说,抛出此错误消息是因为我的web.config服务行为默认情况下具有较低的消息限制,因此当WCF返回说200000字节且我的限制为64000字节时,响应被截断,因此您得到了“......没有意义的答复”。它有意义,它被截断并且无法解析。
我将粘贴修复此问题的web.config更改:
<system.serviceModel>
<behaviors>
<serviceBehaviors>
<behavior name="YourNameSpace.DataServiceBehavior">
<serviceMetadata httpGetEnabled="true"/>
<serviceDebug includeExceptionDetailInFaults="false"/>
<dataContractSerializer maxItemsInObjectGraph="2147483647" />
<serviceTimeouts transactionTimeout="05:05:00" />
<serviceThrottling maxConcurrentCalls="500" maxConcurrentSessions="500"
maxConcurrentInstances="2147483647" />
</behavior>
</serviceBehaviors>
</behaviors>
maxItemsInObjectGraph值是最重要的!
我希望这对任何人都有帮助。
答案 2 :(得分:2)
我遇到了类似的问题。在花了2个小时思考并尝试在线找到答案之后,我决定使用System.Runtime.Serialization.DataContractSerializer按照方法对服务器端的返回值/对象进行seralize和反序列化,最后发现我错过了在其中一个枚举上添加EnumMember属性。
您可能面临类似的问题。
以下是帮助我解决问题的代码段:
var dataContractSerializer = new System.Runtime.Serialization.DataContractSerializer(typeof(MyObject));
byte[] serializedBytes;
using (System.IO.MemoryStream mem1 = new System.IO.MemoryStream())
{
dataContractSerializer.WriteObject(mem1, results);
serializedBytes = mem1.ToArray();
}
MyObject deserializedResult;
using (System.IO.MemoryStream mem2 = new System.IO.MemoryStream(serializedBytes))
{
deserializedResult = (MyObject)dataContractSerializer.ReadObject(mem2);
}
答案 3 :(得分:1)
好的,我刚刚更改了客户端,因此它使用的是配置文件而不是代码,我得到了同样的错误!
代码:
ServiceReference1.Service1Client client = new WCFTest.ConsoleClient.ServiceReference1.Service1Client("NetTcpBinding_IService1");
client.PrintMessage("Hello!");
这是客户端的配置文件,刚从服务中生成...这使我认为它可能不是合同不匹配错误
<configuration>
<system.serviceModel>
<bindings>
<netTcpBinding>
<binding name="NetTcpBinding_IService1" closeTimeout="00:01:00"
openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
transactionFlow="false" transferMode="Buffered" transactionProtocol="OleTransactions"
hostNameComparisonMode="StrongWildcard" listenBacklog="10"
maxBufferPoolSize="524288" maxBufferSize="65536" maxConnections="10"
maxReceivedMessageSize="65536">
<readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
maxBytesPerRead="4096" maxNameTableCharCount="16384" />
<reliableSession ordered="true" inactivityTimeout="00:10:00"
enabled="false" />
<security mode="Message">
<transport clientCredentialType="Windows" protectionLevel="EncryptAndSign" />
<message clientCredentialType="Windows" />
</security>
</binding>
</netTcpBinding>
<wsHttpBinding>
<binding name="WSHttpBinding_IService1" closeTimeout="00:01:00"
openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
bypassProxyOnLocal="false" transactionFlow="false" hostNameComparisonMode="StrongWildcard"
maxBufferPoolSize="524288" maxReceivedMessageSize="65536"
messageEncoding="Text" textEncoding="utf-8" useDefaultWebProxy="true"
allowCookies="false">
<readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
maxBytesPerRead="4096" maxNameTableCharCount="16384" />
<reliableSession ordered="true" inactivityTimeout="00:10:00"
enabled="false" />
<security mode="Message">
<transport clientCredentialType="Windows" proxyCredentialType="None"
realm="" />
<message clientCredentialType="Windows" negotiateServiceCredential="true"
algorithmSuite="Default" establishSecurityContext="true" />
</security>
</binding>
</wsHttpBinding>
</bindings>
<client>
<endpoint address="http://servername:9999/TestService1/" binding="wsHttpBinding"
bindingConfiguration="WSHttpBinding_IService1" contract="ServiceReference1.IService1"
name="WSHttpBinding_IService1">
<identity>
<dns value="
 " />
</identity>
</endpoint>
<endpoint address="net.tcp://serverName:9990/TestService1/" binding="netTcpBinding"
bindingConfiguration="NetTcpBinding_IService1" contract="ServiceReference1.IService1"
name="NetTcpBinding_IService1">
<identity>
<userPrincipalName value="MyUserPrincipalName " />
</identity>
</endpoint>
</client>
</system.serviceModel>
</configuration>
答案 4 :(得分:0)
如果WCF中有两个具有相同名称和参数的方法,则会抛出此错误