Ios多部分請求沒有獲取內容類型在服務器端

我正在做一個小型項目，我需要發送圖像文件到服務器，因爲我正在使用多部分請求。Ios多部分請求沒有獲取內容類型在服務器端

下面是我的代碼

UIImage *resizedImage1 = [img resizedImage:CGSizeMake(90.0f, 90.0f) interpolationQuality:kCGInterpolationHigh]; 


    NSData *imageData = [NSData dataWithData:UIImageJPEGRepresentation(resizedImage1,0.8)]; 

    NSString *urlString = @"myUrl/accounts/add_profile_image"; 
    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init]; 
    [request setURL:[NSURL URLWithString:urlString]]; 
    [request setHTTPMethod:@"POST"]; 

    NSString *boundary = @"---------------------------14737809831466499882746641449"; 
    NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",boundary]; 

     // NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; image/jpeg; boundary=%@",boundary]; 

     NSString *accessToken=[[NSUserDefaults standardUserDefaults]objectForKey:@"userAccesstoken"]; 

    NSLog(@"access token %@",accessToken); 
    [request addValue:contentType forHTTPHeaderField: @"Content-Type"]; 


    [request addValue:accessToken forHTTPHeaderField:@"auth"]; 

    NSLog(@"request has %@",request); 


    // NSLog(@"imagedata has %@",imageData); 

    NSMutableData *postbody = [NSMutableData data]; 


     [postbody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]]; 

     // parameter v=1000 
     [postbody appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
     [postbody appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"v\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; 
     [postbody appendData:[[NSString stringWithFormat:@"1000\r\n"]dataUsingEncoding:NSUTF8StringEncoding]]; 


     // mz_access_token sewt token parameter 
     [postbody appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
     [postbody appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"mz_access_token\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; 
     [postbody appendData:[[NSString stringWithFormat:@"%@\r\n",accessToken]dataUsingEncoding:NSUTF8StringEncoding]]; 


     // image data parameter 
     [postbody appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [postbody appendData:[[NSString stringWithString:[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"user_image\"; filename=\"image.jpg\"\r\n\r\n"]] dataUsingEncoding:NSUTF8StringEncoding]]; 

    //[postbody appendData:[@"Content-Type: application/octet-stream\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; 

    **[postbody appendData:[@"Content-Type: image/jpeg\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];** 
    [postbody appendData:[NSData dataWithData:imageData]]; 
    [postbody appendData:[@"\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; 

[postbody appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]]; 




    NSLog(@"body has %@",postbody); 
    [request setHTTPBody:postbody]; 

     // set the content-length 
     NSString *postLength = [NSString stringWithFormat:@"%d", [postbody length]]; 
     [request setValue:postLength forHTTPHeaderField:@"Content-Length"]; 

    NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil]; 
    NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding]; 

    NSLog(@"%@", returnString); 

    NSError *errorReturned = nil; 
    NSError *error = nil; 

    NSURLResponse *theResponse =[[NSURLResponse alloc]init]; 


    //check netwrok 

    NSData *data = [NSURLConnection sendSynchronousRequest:request 
             returningResponse:&theResponse 
                error:&errorReturned]; 

    if(data) 
    { 
     //parsing json 
     // again converting into ns dictionary object 

     NSDictionary *jsonArray = [NSJSONSerialization JSONObjectWithData: data options: NSJSONReadingMutableContainers error: &error]; 
     //NSLog(@"post data %@",postbody); 
     // NSLog(@"response of web ser %@ :\n %@",name,jsonArray); 

     NSLog(@"Response data %@",jsonArray); 

//  return jsonArray; 

    }else{ 
     NSLog(@"error %@",error); 
    } 
// return [[NSDictionary alloc]init]; 

    });

這是我的Web服務請求。我設置的內容類型像

[postbody appendData:[@"Content-Type: image/jpeg\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];

，但仍然在服務器端我得到@內容類型= nill * 在我們用ROR的webservice *

服務器端請幫我解決這個問題。在此先感謝..

來源

2013-12-12 Raj

您應該設置由頭參數的內容類型

[request setValue:@"image/jpeg" forHTTPHeaderField:@"Content-Type"];

請進行更改。

來源

2013-12-12 10:32:08 Midhere

試過了上面的答案，但它給了我相同的結果。它不能解決我的問題 – Raj

對於每個多部分/表單元素，您需要設置合適的Content-Type，例如，以下爲文本參數：

[postbody appendData:[[NSString stringWithFormat:@"Content-Type: text/plain;charset=utf-8"] dataUsingEncoding:NSUTF8StringEncoding]];

來源

2016-09-20 20:07:40

Ios多部分請求沒有獲取內容類型在服務器端

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