Question

hiii，我正在为我的应用程序使用wcf SOAP服务，并发送如下所示的请求。

postStr = [NSString stringWithFormat:@"<?xml version=\"1.0\"?>\n"
           "<s:Envelope xmlns:s=\"http://schemas.xmlsoap.org/soap/envelope/\">\n"
           "<s:Body>\n"
           "<InsUpdDelActivityInfo xmlns=\"http://tempuri.org/\">\n"
           "<objEventsContent xmlns:d4p1=\"http://schemas.datacontract.org/2004/07/iCampuslite.Model.ActivityStream\" xmlns:i=\"http://www.w3.org/2001/XMLSchema-instance\">\n"
           "<d4p1:ActCommentId i:nil=\"true\" />\n"
           "<d4p1:ActSubTypeCd i:nil=\"true\" />\n"
           "<d4p1:ActType>Status</d4p1:ActType>\n"
           "<d4p1:ActTypeCd>1</d4p1:ActTypeCd>\n"
           "<d4p1:ActivityAnswersList />\n"
           "<d4p1:ActivityComments />\n"
           "<d4p1:ActivityId i:nil=\"true\" />\n"
           "<d4p1:ActivityLike />\n"
           "<d4p1:ActivityName>%@</d4p1:ActivityName>\n"
           "<d4p1:ActivityStreamImagesBytes>%@</d4p1:ActivityStreamImagesBytes>\n"
           "<d4p1:AnswerDesc i:nil=\"true\" />\n"
           "<d4p1:AnswerId>0</d4p1:AnswerId>\n"
           "<d4p1:CommentDesc i:nil=\"true\" />\n"
           "<d4p1:CommentId i:nil=\"true\" />\n"
           "<d4p1:CreatedUserId>%@</d4p1:CreatedUserId>\n"
           "<d4p1:CreatedUserName i:nil=\"true\" />\n"
           "<d4p1:FileOrLinkName i:nil=\"true\" />\n"
           "<d4p1:IsLiked>0</d4p1:IsLiked>\n"
           "<d4p1:IsTotalSchool i:nil=\"true\" />\n"
           "<d4p1:LikeCount>0</d4p1:LikeCount>\n"
           "<d4p1:LinkImage i:nil=\"true\" />\n"
           "<d4p1:ObjTypeCdId i:nil=\"true\" />\n"
           "<d4p1:ObjTypeId i:nil=\"true\" />\n"
           "<d4p1:OperationMode>I</d4p1:OperationMode>\n"
           "<d4p1:OperationType i:nil=\"true\" />\n"
           "<d4p1:OperationTypeId i:nil=\"true\" />\n"
           "<d4p1:OrganizationId>%@</d4p1:OrganizationId>\n"
           "<d4p1:OtherActivityId i:nil=\"true\" />\n"
           "%@\n"
           "</objEventsContent>\n"
           "<ismobile>true</ismobile>\n"
           "</InsUpdDelActivityInfo>\n"
           "</s:Body>\n"
           "</s:Envelope>", statusText, [appDelegateObj.loginUserInfoDict valueForKey:@"a:UserId"], [appDelegateObj.loginUserInfoDict valueForKey:@"a:OrgId"], workspaceStr];

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"%@iCampusliteMobileService/ActivityStreamSl.svc", appDelegateObj.baseURL]]];
NSString *messageLength = [NSString stringWithFormat:@"%lu", (unsigned long)[postStr length]];
[request addValue:@"text/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"];
[request addValue:@"http://tempuri.org/IActivityStreamSl/InsUpdDelActivityInfo" forHTTPHeaderField:@"SOAPAction"];
[request addValue:messageLength forHTTPHeaderField:@"Content-Length"];
[request setHTTPMethod:@"POST"];
[request setHTTPBody:[postStr dataUsingEncoding:NSUTF8StringEncoding]];
NSError *error = nil;
NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:&error];

在上面的请求中有一个元素ActivityStreamImagesBytes base64binary参数我必须传递图像。

我尝试过使用多种不同的格式。

这里是wcf服务截图 here

这是服务器端代码

public string byteArrayToImage(byte[] byteArrayIn,string fileName)
    {
        if (byteArrayIn != null)
        {
            ActivityStreamSl.LogMsg("Byte Array Count : "+byteArrayIn.Length.ToString(), "D:\\log.txt");
            var serverfile = "D:somepath\somepath\somefolder";
            var getfile = HelperClass.Filesavehelper(Constants.UploadPaths.ActivityStream, "testfilename.png", serverfile);

            FileStream file = new FileStream(getfile, FileMode.Create);
            file.Write(byteArrayIn, 0, byteArrayIn.Length);
            file.Close();
            file.Dispose();
            return getfile;
        }
        else
        {
            ActivityStreamSl.LogMsg("Byte array is null","D:\\log.txt");
        }
        return "";
    }

服务器期待一个字节数组，我不知道如何发送它？我不知道base64binary数据类型是什么？我是否必须发送base64编码的字符串或字节数组或仅发送来自NSData *data = UIImageJPEGRepresentation([UIImage imageNamed:@"popular.png"], 0.7);

的图像数据

任何帮助都很明显

Answer 1

WCF服务明确要求 base64binary ，因此您只需要在base64binary中发送它。

base64binary 只是 base64编码的二进制数据。

1）使用以下代码片段将图像转换为二进制文件

NSData *binaryImageData  = UIImageJPEGRepresentation([UIImage imageNamed:@"Photo.png"], 0.0);

2）将二进制编码为base64格式

这是我用来处理base64二进制和UIImage的类

 @interface base64BinaryandImagehandler:NSObject
   +(NSString *) base64BinaryStringFromBinaryData: (NSData *)data length: (int)length;
   +(UIImage*)Base64BinaryToImage:(NSString *)Base64;
 @end


 @implementation base64BinaryandImagehandler:NSObject
      static char base64EncodingTable[64] = {
    'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
    'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',
    'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
    'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/'
     };

 +(NSString *) base64BinaryStringFromBinaryData: (NSData *)data length: (int)length{          

 unsigned long ixtext, lentext;

    long ctremaining;

    unsigned char input[3], output[4];

    short i, charsonline = 0, ctcopy;

    const unsigned char *raw;

    NSMutableString *result;

    lentext = [data length];

    if (lentext < 1)
        return @"";

    result = [NSMutableString stringWithCapacity: lentext];

    raw = [data bytes];

    ixtext = 0;

    while (true) {

        ctremaining = lentext - ixtext;

        if (ctremaining <= 0)
            break;

        for (i = 0; i < 3; i++) {
            unsigned long ix = ixtext + i;
            if (ix < lentext)
                input[i] = raw[ix];
            else
                input[i] = 0;
        }

        output[0] = (input[0] & 0xFC) >> 2;

        output[1] = ((input[0] & 0x03) << 4) | ((input[1] & 0xF0) >> 4);

        output[2] = ((input[1] & 0x0F) << 2) | ((input[2] & 0xC0) >> 6);

        output[3] = input[2] & 0x3F;

        ctcopy = 4;

        switch (ctremaining) {
            case 1:
                ctcopy = 2;
                break;

            case 2:
                ctcopy = 3;
                break;
        }

        for (i = 0; i < ctcopy; i++)
            [result appendString: [NSString stringWithFormat: @"%c", base64EncodingTable[output[i]]]];

        for (i = ctcopy; i < 4; i++)
            [result appendString: @"="];

        ixtext += 3;

        charsonline += 4;

        if ((length > 0) && (charsonline >= length))
            charsonline = 0;
    }
    return result;
      }

  +(UIImage*)Base64BinaryToImage:(NSString *)Base64{      


        NSString* base64String=[[NSString alloc]initWithFormat:@"data:image/png;base64,%@",Base64];

       NSURL *base64url = [NSURL URLWithString:base64String];

       NSData *imageData = [NSData dataWithContentsOfURL:base64url];

       UIImage *img=[UIImage imageWithData:imageData];

      return img;
     }
 @end

以下是将二进制文件转换为base64binary

的方法

NSString *Base64Binary=[base64BinaryandImagehandler base64BinaryStringFromBinaryData:binaryImageData length:binaryImageData.length];

您还可以找到有关here的更多信息

这是C＃

中的base64编码和解码部分

public static string Base64Encode(string plainText) {
  var plainTextBytes = System.Text.Encoding.UTF8.GetBytes(plainText);
  return System.Convert.ToBase64String(plainTextBytes);
}

public static string Base64Decode(string base64EncodedData) {
  var base64EncodedBytes = System.Convert.FromBase64String(base64EncodedData);
  return System.Text.Encoding.UTF8.GetString(base64EncodedBytes);
}

无论如何你可以忽略C＃部分，因为你只是在iPhone部分。

您可以使用以下链接测试您的编码基础64是否正确。

base64toimage converter

更新1 以下代码将确认收到的字符串是否为base64格式

   private bool IsBase64String(string str){
    try{
    // If not exception is caught, then it is a base64 string
    MemoryStream stream = new MemoryStream(Convert.FromBase64String(str));
    return true;
    }
    catch{
    // If exception is caught, then I assumed it is a normal string
    return false;
    }
    }

Reference

以下代码将在 Images 文件夹下为您选择的 base64数据和文件名创建一个图像例如duraiamuthan.jpg 并返回图像的路径，以便您可以在数据库中更新它（它将检查到达的数据是否为base64或二进制[以防万一WCF框架将base64转换为二进制内部]）

  public string Getpath_CreateImageFromEncodedData(string Base64EncodedData, string fileName)
        {
        string fileHandle = "";
        try
        {
            if(IsBase64String(Base64EncodedData))
            byte[] imageBytes = Convert.FromBase64String(Base64EncodedData);
            else
            byte[] imageBytes= Base64EncodedData;

            MemoryStream ms = new MemoryStream(imageBytes, 0, imageBytes.Length);

            ms.Write(imageBytes, 0, imageBytes.Length);

            fileHandle = System.Web.HttpContext.Current.Server.MapPath("Images/" + fileName);

            FileStream fsObj = new FileStream(fileHandle, FileMode.Create, FileAccess.Write);

            ms.WriteTo(fsObj);

            fsObj.Close();

            ms.Close();

            return fileHandle;

        }
        catch (Exception ex)
        {
           return "";
        }

    }

更新2 （针对超时问题）

NSURLRequest和NSMutableURLRequest默认超时时间为60 秒取决于互联网连接，互联网流量网络服务器上的拥塞，ImageCreating时间和所有可能不是够。你可以使用以下设置值高于该值语法[urlReqObj setTimeoutInterval:180];超时间隔为仅在几秒钟内。
如果请求中的那么多请求队列失败，有时会增加IIS中的ConnectionTimeout默认值为120秒。增加ConnectionTimeOut会有所帮助。（此超时也适用于连接的空闲时间。）设置它在IIS高级设置中点击service in IIS Manager -> Advanced Settings -> Connection Limits，您可以在那里设置超时，或者您可以在web.config中简单地覆盖连接超时。
启用Keep-alive in IIS以便重复使用相同的连接，从而提高IIS的效率。点击service in IIS Manager -> Advanced Settings -> Connection Limits -> Enable HTTP Keep-Alives
如果您打算在DB中存储图像的二进制文件，您可以增加connectiontimeout中的数据库connectionstring，或者可以增加sqlcommandtimeout

希望这会有所帮助。如果您有任何疑问，请随时询问

Answer 2

HIII，我有我的问题

在服务器端，它期望一个字节数组，

所以，我发送我的请求如下。

将base64字符串转换为字节数组

postStr = [NSString stringWithFormat:@"<?xml version=\"1.0\"?>\n"
       "<s:Envelope xmlns:s=\"http://schemas.xmlsoap.org/soap/envelope/\">\n"
       "<s:Body>\n"
       "<InsUpdDelActivityInfo xmlns=\"http://tempuri.org/\">\n"
       "<objEventsContent xmlns:d4p1=\"http://schemas.datacontract.org/2004/07/iCampuslite.Model.ActivityStream\" xmlns:i=\"http://www.w3.org/2001/XMLSchema-instance\">\n"
       "<d4p1:ActCommentId i:nil=\"true\" />\n"
       "<d4p1:ActSubTypeCd i:nil=\"true\" />\n"
       "<d4p1:ActType>Status</d4p1:ActType>\n"
       "<d4p1:ActTypeCd>1</d4p1:ActTypeCd>\n"
       "<d4p1:ActivityAnswersList />\n"
       "<d4p1:ActivityComments />\n"
       "<d4p1:ActivityId i:nil=\"true\" />\n"
       "<d4p1:ActivityLike />\n"
       "<d4p1:ActivityName>%@</d4p1:ActivityName>\n"
       "<d4p1:ActivityStreamImagesBytes dt: dt:"Base64Binary"><dt:length>%d</dt:length><dt:byte>%@</dt:byte>......................................</d4p1:ActivityStreamImagesBytes>\n"
       "<d4p1:AnswerDesc i:nil=\"true\" />\n"
       "<d4p1:AnswerId>0</d4p1:AnswerId>\n"
       "<d4p1:CommentDesc i:nil=\"true\" />\n"
       "<d4p1:CommentId i:nil=\"true\" />\n"
       "<d4p1:CreatedUserId>%@</d4p1:CreatedUserId>\n"
       "<d4p1:CreatedUserName i:nil=\"true\" />\n"
       "<d4p1:FileOrLinkName i:nil=\"true\" />\n"
       "<d4p1:IsLiked>0</d4p1:IsLiked>\n"
       "<d4p1:IsTotalSchool i:nil=\"true\" />\n"
       "<d4p1:LikeCount>0</d4p1:LikeCount>\n"
       "<d4p1:LinkImage i:nil=\"true\" />\n"
       "<d4p1:ObjTypeCdId i:nil=\"true\" />\n"
       "<d4p1:ObjTypeId i:nil=\"true\" />\n"
       "<d4p1:OperationMode>I</d4p1:OperationMode>\n"
       "<d4p1:OperationType i:nil=\"true\" />\n"
       "<d4p1:OperationTypeId i:nil=\"true\" />\n"
       "<d4p1:OrganizationId>%@</d4p1:OrganizationId>\n"
       "<d4p1:OtherActivityId i:nil=\"true\" />\n"
       "%@\n"
       "</objEventsContent>\n"
       "<ismobile>true</ismobile>\n"
       "</InsUpdDelActivityInfo>\n"
       "</s:Body>\n"
       "</s:Envelope>", statusText, [byteArray length], byteArray[0], byteArray[1], .................................., [appDelegateObj.loginUserInfoDict valueForKey:@"a:UserId"], [appDelegateObj.loginUserInfoDict valueForKey:@"a:OrgId"], workspaceStr];

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"%@blah....blah....blah....", appDelegateObj.baseURL]]]; NSString *messageLength = [NSString stringWithFormat:@"%lu", (unsigned long)[postStr length]]; [request addValue:@"text/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"]; [request addValue:@"http://tempuri.org/blah......blah.....blah............" forHTTPHeaderField:@"SOAPAction"]; [request addValue:messageLength forHTTPHeaderField:@"Content-Length"]; [request setHTTPMethod:@"POST"]; [request setHTTPBody:[postStr dataUsingEncoding:NSUTF8StringEncoding]]; NSError *error = nil; NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:&error];

我已经托管了这些服务，并且我已经看到了请求的xml格式。无论如何，谢谢你@ Duraiamuthan.H

使用SOAP使用WCF服务将图像从iPhone上传到服务器

2 个答案: