远程服务器返回了意外响应 400 Bad Request。原因在于：传输的数据量过大。

解决方案：

首先在客户端（client）的配置文件里：

1.在节点<binding>修改传输数据的最大额度：

    <system.serviceModel>

    <bindings>

      <basicHttpBinding>

        <binding name="BasicHttpBinding_USService1" closeTimeout="00:03:00"

          openTimeout="00:03:00" receiveTimeout="00:10:00" sendTimeout="00:03:00"

          allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard"

          maxBufferSize="2147483647" maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647"

          messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"

          useDefaultWebProxy="true">

          <readerQuotas maxDepth="32" maxStringContentLength="2147483647"

            maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" />

          <security mode="None">

            <transport clientCredentialType="None" proxyCredentialType="None"

              realm="" />

            <message clientCredentialType="UserName" algorithmSuite="Default" />

          </security>

        </binding>

      </basicHttpBinding>

    </bindings>

    <client>

      <endpoint address="http://localhost:8001/usinfoservices" binding="basicHttpBinding"

        bindingConfiguration="BasicHttpBinding_USService1" contract="ServiceReference2.USService"

        name="BasicHttpBinding_USService1" />

    </client>

  </system.serviceModel>

然后在修改服务器端<Hosting>的配置文件：

1.在节点<binding>修改传输数据的最大额度：

 <system.serviceModel>

       <bindings>

         <basicHttpBinding>

           <binding name="newBinding" maxBufferPoolSize="21474835647" maxReceivedMessageSize="2147483647" messageEncoding="Text">

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

           </binding>

          </basicHttpBinding>

       </bindings>

        <behaviors>

          <serviceBehaviors>

            <behavior name="metadataBehavior">

                <serviceMetadata httpGetEnabled="true" />

                <serviceDebug includeExceptionDetailInFaults="true"/>

            </behavior>   

         </serviceBehaviors>  

        </behaviors>         

        <services>

          <service behaviorConfiguration="metadataBehavior" name="Genesysinfo.USServices.Services.USInfoServices">

             <endpoint address="" bindingConfiguration="newBinding" binding="basicHttpBinding" contract="Genesysinfo.USServices.Contracts.IUSInfoServices" />

             <endpoint address="" binding="netTcpBinding" contract="Genesysinfo.USServices.Contracts.IUSInfoServices" />

             <host>

                <baseAddresses>

                    <add baseAddress="http://localhost:8001/usinfoservices" />

                    <add baseAddress="net.tcp://localhost:8000/usinfoservices" />

                </baseAddresses>

             </host>

            <endpoint address="mex" binding="mexTcpBinding" contract="IMetadataExchange" />

          </service>        

        </services>  

     </system.serviceModel>

 

就OK了。