我正在开发一个文件上传项目，它的构建如下：
我有一个包含多个项目的解决方案，其中一些是：
WCF服务
＆＃34;业务逻辑＆＃34;
UI
当我尝试上传超过1MB的文件时，我收到此错误：
＆＃34;无法将数据写入传输连接：远程主机强行关闭现有连接。＆＃34;
以下是我上传文件的代码：
public string UploadFile(string serviceUrl,decimal maxFileSize, AttachmentFileParams fileParams, Stream file)
{
try
{
if (file.Length > (maxFileSize * 1024)) //maxFileSize is defined in KB and file.Length is in Bytes
return Serialization.ConvertToJson(new { IsError = true, ErrorMessage = Constants.Messages.MaxFileSizeExceeded + maxFileSize });
string requestUrl = string.Format("{0}/UploadFile", serviceUrl);
string jsonFile = Serialization.ConvertToJson(fileParams);
byte[] jsonFileBytes = Encoding.UTF8.GetBytes(jsonFile);
byte[] len = BitConverter.GetBytes(jsonFileBytes.Length);
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(requestUrl);
request.Method = "POST";
byte[] bufferRead = new byte[checked((uint)Math.Min(4096, (int)jsonFileBytes.Length + file.Length))];
int bytesReadCount;
request.ContentLength = (long)len.Length + (long)jsonFileBytes.Length + file.Length;
using (Stream requestStream = request.GetRequestStream())
{
requestStream.Write(len, 0, len.Length);
//*************************HERE IS WHERE THE ERROR IS THROWN*********************************//
requestStream.Write(jsonFileBytes, 0, jsonFileBytes.Length);
//*************************HERE IS WHERE THE ERROR IS THROWN*********************************//
while ((bytesReadCount = file.Read(bufferRead, 0, bufferRead.Length)) > 0)
{
requestStream.Write(bufferRead, 0, bytesReadCount);
}
requestStream.Close();
}
HttpWebResponse resposne = (HttpWebResponse)request.GetResponse();
string result = string.Empty;
using (StreamReader reader = new StreamReader(resposne.GetResponseStream()))
{
result = reader.ReadToEnd();
}
return result;
}
catch (Exception ex)
{
return Serialization.ConvertToJson(new { IsError = true, ErrorMessage = ex.Message });
}
}
我试过在wcf服务和ui app web.config文件中添加这些配置：
<system.web>
<httpRuntime maxRequestLength="1073741824" executionTimeout="3600" />
</system.web>
<system.webServer>
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength="1073741824" />
</requestFiltering>
</security>
</system.webServer>
//in the service config file there is also this:
<system.serviceModel>
<behaviors>
<serviceBehaviors>
<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="false"/>
</behavior>
</serviceBehaviors>
</behaviors>
<bindings>
<wsHttpBinding>
<binding name="WSHttpBinding_IBroadcast360" maxReceivedMessageSize="2147483647" maxBufferPoolSize="2147483647" receiveTimeout="00:01:00" sendTimeout="00:01:00"
textEncoding="utf-8" openTimeout="00:01:00" transactionFlow="True">
<readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647" maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647"/>
<security mode="None" />
</binding>
</wsHttpBinding>
</bindings>
<serviceHostingEnvironment multipleSiteBindingsEnabled="true" aspNetCompatibilityEnabled="true" />
</system.serviceModel>
我不认为这与服务器问题有关，因为即使我在本地计算机上使用VisualStudio运行它，我也会发生这种情况。
也许我在某个地方忘记了一些困惑，但我不知道在哪里......
答案 0 :(得分：0)
我解决了，这是解决方案的代码：
public class WCFClientProxy<IServiceContract> : ClientBase<IServiceContract> where IServiceContract : class
{
public IServiceContract Instance
{
get { return base.Channel; }
}
}
public string UploadFile(decimal maxFileSize, AttachmentFileParams fileParams, Stream file)
{
try
{
if (file.Length > (maxFileSize * 1024)) //maxFileSize is defined in KB and file.Length is in Bytes
return Serialization.ConvertToJson(new { IsError = true, ErrorMessage = Constants.Messages.MaxFileSizeExceeded + maxFileSize });
string jsonFile = Serialization.ConvertToJson(fileParams);
byte[] jsonFileBytes = Encoding.UTF8.GetBytes(jsonFile);
byte[] len = BitConverter.GetBytes(jsonFileBytes.Length);
byte[] bufferRead = new byte[checked((uint)Math.Min(4096, (int)jsonFileBytes.Length + file.Length))];
int bytesReadCount;
using (Stream stream = new MemoryStream())
{
stream.Write(len, 0, len.Length);
stream.Write(jsonFileBytes, 0, jsonFileBytes.Length);
while ((bytesReadCount = file.Read(bufferRead, 0, bufferRead.Length)) > 0)
{
stream.Write(bufferRead, 0, bytesReadCount);
}
stream.Position = 0;
WCFClientProxy<Attachment.Interfaces.IAttachmentService> proxy = new WCFClientProxy<Attachment.Interfaces.IAttachmentService>();
return proxy.Instance.UploadFile(stream);
}
}
catch (Exception ex)
{
return Serialization.ConvertToJson(new { IsError = true, ErrorMessage = ex.Message });
}
}
服务配置：
<system.web>
<compilation debug="true" targetFramework="4.0" />
<httpRuntime maxRequestLength="2147483647" executionTimeout="3600" />
</system.web>
<system.serviceModel>
<serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" />
<services>
<service name="XXX.Implementation.AttachmentService">
<endpoint binding="webHttpBinding"
behaviorConfiguration="webHttpBehavior"
bindingConfiguration="higherMessageSize"
contract="XXX.Interfaces.IAttachmentService" />
</service>
</services>
<bindings>
<webHttpBinding>
<binding name="higherMessageSize" transferMode="Streamed" closeTimeout="10:00:00" openTimeout="10:00:00" receiveTimeout="10:00:00" sendTimeout="10:00:00"
maxBufferSize="2147483647"
maxBufferPoolSize="2147483647"
maxReceivedMessageSize="2147483647">
<readerQuotas maxDepth="2147483647"
maxArrayLength="2147483647"
maxBytesPerRead="2147483647"
maxNameTableCharCount="2147483647"
maxStringContentLength="2147483647"/>
<security mode="None"/>
</binding>
</webHttpBinding>
</bindings>
<behaviors>
<serviceBehaviors>
<behavior>
<serviceMetadata httpGetEnabled="true" httpsGetEnabled="true" />
<serviceDebug includeExceptionDetailInFaults="false"/>
</behavior>
</serviceBehaviors>
<endpointBehaviors>
<behavior name="webHttpBehavior">
<webHttp/>
</behavior>
</endpointBehaviors>
</behaviors>
</system.serviceModel>
<system.webServer>
<modules runAllManagedModulesForAllRequests="true">
<remove name="WebDAVModule"/>
</modules>
<handlers>
<remove name ="WebDAV"/>
</handlers>
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength="2147483647" />
</requestFiltering>
</security>
</system.webServer>
客户端配置：
<system.web>
<compilation debug="true" targetFramework="4.0" />
<httpRuntime maxRequestLength="2147483647" />
</system.web>
<system.serviceModel>
<bindings>
<webHttpBinding>
<binding name="WebHttpBinding_IAttachmentService" closeTimeout="10:00:00" openTimeout="10:00:00" receiveTimeout="10:00:00" sendTimeout="10:00:00"
maxBufferSize="2147483647"
maxBufferPoolSize="2147483647"
maxReceivedMessageSize="2147483647">
<readerQuotas maxDepth="2147483647"
maxArrayLength="2147483647"
maxBytesPerRead="2147483647"
maxNameTableCharCount="2147483647"
maxStringContentLength="2147483647"/>
<security mode="None" />
</binding>
</webHttpBinding>
</bindings>
<client>
<endpoint address="http://localhost:54893/AttachmentService.svc"
binding="webHttpBinding"
bindingConfiguration="WebHttpBinding_IAttachmentService"
behaviorConfiguration="webHttpBehavior"
contract="XXX.Interfaces.IAttachmentService" />
</client>
<behaviors>
<endpointBehaviors>
<behavior name="webHttpBehavior">
<webHttp/>
</behavior>
</endpointBehaviors>
</behaviors>
</system.serviceModel>
<system.webServer>
<modules runAllManagedModulesForAllRequests="true"/>
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength="1073741824" />
</requestFiltering>
</security>
</system.webServer>