java - 将图像文件从 Android 发送到 WCF REST 服务

Question

我已经引用了很多解决方案，但没有运气。

我正在尝试使用 WCF REST 服务将图像文件从 Android 发送到服务器。但我只能发送 10KB 的图像文件，除此之外我无法发送。

早期我尝试发送 Base64 字符串，但无法使用此方法发送。更改了 WCF 配置文件中的多个配置，但接收大文件时仍然存在问题。

下面是我异步执行的 Android 代码

使用 WCF REST 服务向服务器发送图像文件的 Android 客户端代码

public void myGoal()
{

       Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.courserequest);
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    bitmap.compress(CompressFormat.JPEG, 50, bos);
    byte[] data = bos.toByteArray();
    StringBuilder s;


    // Making HTTP request
    try {
        // defaultHttpClient
        DefaultHttpClient httpClient = new DefaultHttpClient();

        final String URL1 = "http://localhost:8889/PhotoService/WcfAndroidImageService.svc/GetStream";
        HttpPost httpPost = new HttpPost(URL1);

        ContentBody bin = null;

        httpPost.setEntity(new ByteArrayEntity(data));  



        HttpResponse response = httpClient.execute(httpPost);
        BufferedReader reader = new BufferedReader(new InputStreamReader(
                response.getEntity().getContent(), "UTF-8"));
        String sResponse;
         s = new StringBuilder();

        while ((sResponse = reader.readLine()) != null) {
            s = s.append(sResponse);
        }
        System.out.println("Response: " + s);
    } catch (Exception e) {
        Log.e(e.getClass().getName(), e.getMessage());
    }

}

WCF REST 服务中的 Web.Config 文件，用于添加配置功能

<?xml version="1.0"?>
<configuration>

  <system.web>
    <compilation debug="true" targetFramework="4.0" />
    <httpRuntime maxRequestLength="2097151" useFullyQualifiedRedirectUrl="true"
      executionTimeout="14400"   />
  </system.web>
  <system.serviceModel>


    <services>
      <service name="WcfAndroidPhotoServis.WcfAndroidImageService" behaviorConfiguration="BehConfig">
        <endpoint address=""
              binding="webHttpBinding"
                 behaviorConfiguration="web"
              contract="WcfAndroidPhotoServis.IWcfAndroidImageService"/>
        <host>
          <baseAddresses>
            <add baseAddress="http://localhost:8889/PhotoService/WcfAndroidImageService.svc"/>
          </baseAddresses>
        </host>
      </service>
    </services>


    <bindings>
      <webHttpBinding>
        <binding name="WebBinding"
          bypassProxyOnLocal="true"
                 useDefaultWebProxy="false"
                 hostNameComparisonMode="WeakWildcard"
                 sendTimeout="10:15:00"
                 openTimeout="10:15:00"
                 receiveTimeout="10:15:00"
                 maxReceivedMessageSize="2147483647"

                 maxBufferSize="2147483647"
                 maxBufferPoolSize="2147483647"
                        transferMode="Streamed"

                 >

          <readerQuotas maxDepth="128"
          maxStringContentLength="2147483647" maxArrayLength="2147483647"
          maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" />

        </binding>
      </webHttpBinding>
    </bindings>




    <behaviors>
      <serviceBehaviors>
        <behavior name="BehConfig" >
          <!-- To avoid disclosing metadata information, set the value below to false 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 automaticFormatSelectionEnabled="true"  helpEnabled="true"  defaultOutgoingResponseFormat="Json" />


          <dataContractSerializer maxItemsInObjectGraph="2147483647"  />
        </behavior>
      </endpointBehaviors>
    </behaviors>
    <serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
  </system.serviceModel>
  <system.webServer>
    <modules runAllManagedModulesForAllRequests="true"/>
    <!--
        To browse web app root directory during debugging, set the value below to true.
        Set to false before deployment to avoid disclosing web app folder information.
      -->
    <directoryBrowse enabled="true"/>
  </system.webServer>

</configuration>

WCF中的图像服务接口(interface)方法

IWcfAndroidImageService.cs

  [OperationContract]
        [WebInvoke(Method = "POST",
                RequestFormat = WebMessageFormat.Json,
                ResponseFormat = WebMessageFormat.Json,
              //BodyStyle = WebMessageBodyStyle.Bare,
                UriTemplate = "GetStream")]
        void GetStream(Stream imageData);

从 Android 等客户端接收字节流数据的图像服务方法 (WcfAndroidImageService.svc.cs)

   public void GetStream(Stream imageData)
        {
            try
            {
                byte[] buffer = new byte[10000];
                imageData.Read(buffer, 0, 10000);
                FileStream f = new FileStream("D:\\FileUpload\\SubjectFront.JPG", FileMode.OpenOrCreate);
                f.Write(buffer, 0, buffer.Length);
                f.Close();
                imageData.Close();
            }
            catch (Exception ex)
            {
            }
        }

Answer 1

 imageData.Read(buffer, 0, 10000);
 f.Write(buffer, 0, buffer.Length);

您只这样做一次。所以你只能得到 10000 字节。其余的都丢失了。

创建一个循环，继续阅读直到流结束。

Int nread = imageData.Read(buffer, 0, 10000);
f.Write(buffer, 0, nread);