Question

我在我的应用程序中使用WCF。来自应用程序I将列表传递给后端通过WCF进行处理。如果列表中的no Of行很大，那么该服务将抛出异常“远程服务器返回了意外响应：（400）Bad Request。”

下面是我的UI网络配置

<system.serviceModel>

<bindings>

  <basicHttpBinding>

    <binding name="BasicHttpBinding_IService1" closeTimeout="10:20:00"
      openTimeout="10:20:00" receiveTimeout="10:20:00" sendTimeout="10:20:00"
      allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard"
      maxBufferSize="2147483647" maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647"
      messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"
      useDefaultWebProxy="true">

      <readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647"
        maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" />
      <security mode="None">

        <transport clientCredentialType="Windows" proxyCredentialType="Windows"
          realm="" />
        <message clientCredentialType="UserName" algorithmSuite="Default" />

      </security>

    </binding>
    <binding name="BasicHttpBinding_IErrorService" closeTimeout="10:20:00"
      openTimeout="10:20:00" receiveTimeout="10:20:00" sendTimeout="10:20:00"
      allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard"
      maxBufferSize="2147483647" maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647"
      messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"
      useDefaultWebProxy="true">

      <readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647"
        maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" />

      <security mode="None">

        <transport clientCredentialType="None" proxyCredentialType="None"
          realm="" />
        <message clientCredentialType="UserName" algorithmSuite="Default" />

      </security>

    </binding>
    <binding name="BasicHttpBinding_IService11" closeTimeout="10:20:00"
      openTimeout="10:20:00" receiveTimeout="10:20:00" sendTimeout="10:20:00"
      allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard"
      maxBufferSize="2147483647" maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647"
      messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"
      useDefaultWebProxy="true">

      <readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647"
        maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" />

      <security mode="None">

        <transport clientCredentialType="Windows" proxyCredentialType="Windows"
          realm="" />
        <message clientCredentialType="UserName" algorithmSuite="Default" />

      </security>

    </binding>
    <binding name="BasicHttpBinding_ISecurityUserService" closeTimeout="10:20:00"
      openTimeout="10:20:00" receiveTimeout="10:20:00" sendTimeout="10:20:00"
      allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard"
      maxBufferSize="2147483647" maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647"
      messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"
      useDefaultWebProxy="true">

      <readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647"
        maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" />

      <security mode="None">

        <transport clientCredentialType="Windows" proxyCredentialType="Windows"
          realm="" />
        <message clientCredentialType="UserName" algorithmSuite="Default" />

      </security>

    </binding>

  </basicHttpBinding>
</bindings>

<client>

  <endpoint address="http://localhost:6789/Service1.svc" binding="basicHttpBinding"
    bindingConfiguration="BasicHttpBinding_IService1" contract="ServiceReference1.IService1"
    name="BasicHttpBinding_IService1" />
  <endpoint address="http://localhost:6789/ErrorService.svc" binding="basicHttpBinding"
    bindingConfiguration="BasicHttpBinding_IErrorService" contract="ErrorServiceReference.IErrorService"
    name="BasicHttpBinding_IErrorService" />
  <endpoint address="http://localhost:6789/SecurityUserService.svc"
    binding="basicHttpBinding" bindingConfiguration="BasicHttpBinding_ISecurityUserService"
    contract="SecurityUserServiceReference.ISecurityUserService"
    name="BasicHttpBinding_ISecurityUserService" />
  <endpoint address="http://localhost:6789/Service1.svc" binding="basicHttpBinding"
    bindingConfiguration="BasicHttpBinding_IService11" contract="ServiceReference.IService1"
    name="BasicHttpBinding_IService11" />

</client>

</system.serviceModel>

还将以下标记添加到WCF Web配置以及UI Web配置

<system.web>

      <httpRuntime maxRequestLength="512000" />

  </system.web>

我的服务配置如下

  <httpRuntime maxRequestLength="512000" />

ServiceModel：

<behaviors>
  <serviceBehaviors>
    <behavior>
      <serviceMetadata httpGetEnabled="true"/>
      <serviceDebug includeExceptionDetailInFaults="true"/>
    </behavior>
  </serviceBehaviors>
</behaviors>
<services>      
</services>
<serviceHostingEnvironment multipleSiteBindingsEnabled="true" />

<modules runAllManagedModulesForAllRequests="true"/>

我修改了服务Web配置。我仍然得到同样的问题。请帮帮我

<services>

  <service name="BasicHttpBinding_IService1" behaviorConfiguration="Behavior">
    <endpoint address=""
              binding="basicHttpBinding"
              bindingConfiguration="BasicHttpBinding_IService1"
              contract="ServiceReference1.IService1"/>        
  </service>
  <service name="BasicHttpBinding_IErrorService" behaviorConfiguration="Behavior">
    <endpoint address=""
              binding="basicHttpBinding"
              bindingConfiguration="BasicHttpBinding_IErrorService"
              contract="ErrorServiceReference.IErrorService"/>

  </service>
  <service name="BasicHttpBinding_ISecurityUserService" behaviorConfiguration="Behavior">
    <endpoint address=""
              binding="basicHttpBinding"
              bindingConfiguration="BasicHttpBinding_ISecurityUserService"
              contract="SecurityUserServiceReference.ISecurityUserService"/>

  </service>

</services>

and bindings

<bindings>

 <basicHttpBinding>
  <binding name="BasicHttpBinding_IService1" closeTimeout="10:20:00"
    openTimeout="10:20:00" receiveTimeout="10:20:00" sendTimeout="10:20:00"
    allowCookies="false" bypassProxyOnLocal="false"      hostNameComparisonMode="StrongWildcard"
    maxBufferSize="2147483647" maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647"
    messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"
    useDefaultWebProxy="true">
    <readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647"
      maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" />
    <security mode="None">
      <transport clientCredentialType="Windows" proxyCredentialType="Windows"
        realm="" />
      <message clientCredentialType="UserName" algorithmSuite="Default" />
    </security>
  </binding>
    <binding name="BasicHttpBinding_IErrorService" closeTimeout="10:20:00"
      openTimeout="10:20:00" receiveTimeout="10:20:00" sendTimeout="10:20:00"
      allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard"
      maxBufferSize="2147483647" maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647"
      messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"
      useDefaultWebProxy="true">
      <readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647"
        maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" />
      <security mode="None">
        <transport clientCredentialType="None" proxyCredentialType="None"
          realm="" />
        <message clientCredentialType="UserName" algorithmSuite="Default" />
      </security>
    </binding>
    <binding name="BasicHttpBinding_ISecurityUserService" closeTimeout="10:20:00"
      openTimeout="10:20:00" receiveTimeout="10:20:00" sendTimeout="10:20:00"
      allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard"
      maxBufferSize="2147483647" maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647"
      messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"
      useDefaultWebProxy="true">
      <readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647"
        maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" />
      <security mode="None">
        <transport clientCredentialType="Windows" proxyCredentialType="Windows"
          realm="" />
        <message clientCredentialType="UserName" algorithmSuite="Default" />
      </security>
    </binding>
  </basicHttpBinding>

</bindings>

Answer 1

您似乎没有在服务配置中定义任何端点或绑定，这意味着您将获得默认端点和绑定。由于您的服务使用默认绑定及其默认值，因此无法接收大消息。

您可以通过省略绑定元素中的name属性来覆盖默认绑定设置。但是，在您的情况下，您在三个已定义的绑定中有不同的设置（至少在安全部分中）。因此，您需要定义绑定并将它们分配给端点。

尝试这样的事情：

<bindings>
  <basicHttpBinding>
    <binding name="BasicHttpBinding_IService1" .....>
  </basicHttpBinding>
</bindings>

我省略了大部分绑定声明 - 您只需从客户端配置中复制它们即可。

然后在服务中，您在端点元素上为bindingConfig属性分配特定的绑定配置，如下所示：

<services>
  <service .... >
    <endpoint address="http://localhost:6789/Service1.svc"  
              binding="basicHttpBinding"
              bindingConfiguration="BasicHttpBinding_IService1" 
              contract="ServiceReference1.IService1" 
              name="BasicHttpBinding_IService1" />
  </service>
</services>

同样，为简单起见，我省略了大部分配置代码。

这里的关键点是服务需要具有一个绑定，该绑定被配置为接受比默认值更大的消息。增加运行时的maxRequestLength不会直接影响WCF服务（当然，除非您的请求大于HTTP运行时值）。

您可以在此处详细了解默认端点和绑定 - A Developer's Introduction to Windows Communication Foundation 4

WCF抛出异常当传递的列表大小很大时

1 个答案: