C# 转换中的 HttpURLConnection REST API

Question

我刚得到一些 Java 代码，我需要将其转换为 C# 并将文件上传到 Documentum 服务器。我转换成C#，需要一些查询。

边界是什么（在 Java 中使用一些常量唯一值）在 C# 中声明什么，我希望添加标题“a_content_type”和“object_name”。 C#中的SetTimeOut、ReadTimeOut、UseCatches、DoInput和DoOutput是什么？

Java 代码：

private HttpURLConnection getHttpURLConnection( String fileName, String  fileExt, URL urlOne ) throws IOException            
    HttpURLConnection connection;
    connection = ( HttpURLConnection ) urlOne.openConnection();
    connection.setRequestMethod( "POST" );
    connection.setRequestProperty( CONTENT_TYPE, "multipart/form- 
    data;boundary="+ BOUNDARY );
    connection.setRequestProperty( ACCEPT, "application/vnd.emc.documentum+json" );
    connection.setRequestProperty( AUTHORIZATION,BASIC+ 
    Base64.encodeBase64String( ( username + ":" + password ) .getBytes() ) );
    connection.setUseCaches( false );
    connection.setRequestProperty( "Object_Name", "test_pdffile");
    connection.setRequestProperty( A_CONTENT_TYPE, "pdf" );
    connection.setDoInput( true );
    connection.setDoOutput( true );    
    connection.setConnectTimeout(TIMEOUT * THOUSAND);
    connection.setReadTimeout(TIMEOUT * THOUSAND);
    return connection;
}

C#代码：

try 
{
     System.Net.HttpWebRequest request = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(url);
     request.Method = "GET";
     request.ContentType = "multipart/form-data;boundary="+ BOUNDARY;
     request.PreAuthenticate = true;         
     String encoded = System.Convert.ToBase64String(System.Text.Encoding.GetEncoding("ISO-8859-1").GetBytes(username + ":" + password));
     request.Headers.Add("Authorization", "Basic " + encoded);
     request.Accept = "application/vnd.emc.documentum+json";
     request.Headers["Object_Name"] = "test_pdffile";
     request.Headers["a_content_type"] = "pdf";
}

Answer 1

这是我使用的代码。它正在工作。

D2Document newDocument = new D2Document();
newDocument.SetPropertyValue("object_name", fileName);
newDocument.SetPropertyValue("a_content_type", contenType);
String documentURL = ConfigurationManager.AppSettings["DOCUMENTUM_URL"] + "objects/"+ documentId + "/content-media?format=" + contenType + "&modifier=&page=0";
JSON_GENERIC_MEDIA_TYPE = new MediaTypeWithQualityHeaderValue("application/json");
JSON_VND_MEDIA_TYPE = new MediaTypeWithQualityHeaderValue("application/vnd.emc.documentum+json");
try
    {
        using (var multiPartStream = new MultipartFormDataContent())
            {
                MemoryStream stream = new MemoryStream();
                JsonSerializer.WriteObject(stream, newDocument);
                ByteArrayContent firstPart = new ByteArrayContent(stream.ToArray());
                firstPart.Headers.ContentType = JSON_VND_MEDIA_TYPE;               
               multiPartStream.Add(firstPart);
               stream.Dispose();
               HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Post, documentURL);
               request.Content = multiPartStream;
               String encoded = System.Convert.ToBase64String(System.Text.Encoding.GetEncoding("ISO-8859-1").GetBytes(username + ":" + password));
               request.Headers.Add("Authorization", "Basic " + encoded);                      
               using (HttpResponseMessage response = _httpClient.GetAsync(documentURL).Result)
                  {
                     if (response != null)
                        {
                           var responsestream = response.Content;
                         }}}}

Answer 2

对于边界 - 看here

“a_content_type”和“object_name”确实是标题
SetTimeOut 是：request.Timeout
ReadTimeOut 是 request.ReadWriteTimeout

UseCatches、DoInput 和 DoOutput 用于 Java 特定用途，据我所知，它们在 C# 中没有任何等价物。