解析RESTAPI在Objective-C中上载二进制图像数据

我在尝试将图像数据发送到REST API时返回500错误

NSMutableURLRequest *parseRequest = [NSMutableURLRequest requestWithURL:url];

  [parseRequest setHTTPMethod:@"POST"];

  [parseRequest setValue:@“*****” forHTTPHeaderField:@"X-Parse-Application-Id:"];

  [parseRequest setValue:@“*****” forHTTPHeaderField:@"X-Parse-REST-API-Key:"];

  [parseRequest setValue:@"image/png" forHTTPHeaderField:@"Content-Type:"];



  NSLog(@"All Headers: %@",[parseRequest allHTTPHeaderFields]);



  NSData *imageData = [[NSData alloc]initWithData:[NSData dataFromBase64String:data]];

  [parseRequest setHTTPBody:imageData];



  NSURLResponse *theResponse = NULL;

  NSError *theError = NULL;

  NSError *theJSONError = NULL;



  NSData *theResponseData = [NSURLConnection sendSynchronousRequest:parseRequest returningResponse:&theResponse error:&theError];

  NSString *responseString = [[NSString alloc]initWithData:theResponseData encoding:NSUTF8StringEncoding];

  NSDictionary *dataDictionaryResponse = [NSJSONSerialization JSONObjectWithData:theResponseData options:NSJSONReadingAllowFragments error:&theJSONError];



  NSLog(@“Url to send request: %@“,url);

  NSLog(@“Response String: %@",responseString);

  NSLog(@"Response Error: %@",theError);

返回：

所有标题：

{

    "Content-Type:" = "image/png";

    "X-Parse-Application-Id:" = *****;

    "X-Parse-REST-API-Key:" = *****;


}

Url to send request: https://api.parse.com/1/files/pic2.png

Response String:  *HTML page with 500 error*

Response Error: (null)

我假设它不喜欢将二进制数据作为HTTPBody传递，但是由于我没有收到任何错误消息，所以很难判断发生了什么。用CURL发出同样的请求很好。

像这样试试

 NSMutableURLRequest *parseRequest = [NSMutableURLRequest requestWithURL:url];                                   
    [parseRequest setCachePolicy:NSURLRequestReloadIgnoringLocalCacheData];
    [parseRequest setHTTPShouldHandleCookies:NO];
    [parseRequest setTimeoutInterval:30];
    [parseRequest setHTTPMethod:@"POST"];

    // set Content-Type in HTTP header
    NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", boundary];
    [request setValue:contentType forHTTPHeaderField: @"Content-Type"];

    // post body
    NSMutableData *body = [NSMutableData data];

    // add params (all params are strings)

        [body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
        [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n", param] dataUsingEncoding:NSUTF8StringEncoding]];
        [body appendData:[[NSString stringWithFormat:@"%@\r\n", [_params objectForKey:param]] dataUsingEncoding:NSUTF8StringEncoding]];


    // add image data
    NSData *imageData = UIImageJPEGRepresentation(imageToPost, 1.0);
    if (imageData) {
        [body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
        [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"; filename=\"image.jpg\"\r\n", FileParamConstant] dataUsingEncoding:NSUTF8StringEncoding]];
        [body appendData:[[NSString stringWithString:@"Content-Type: image/jpeg\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
        [body appendData:imageData];
        [body appendData:[[NSString stringWithFormat:@"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
    }

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

    // setting the body of the post to the reqeust
    [parseRequest setHTTPBody:body];

    // set URL
    [parseRequest setURL:requestURL];

---

由于没有要添加的参数，尝试了此文件的精简版本，但运气不佳

[body appendData:[[NSString stringWithFormat:@“内容处置：表单数据；文件名=\”image.jpg\“\r\n”]dataUsingEncoding:NSUTF8StringEncoding]；[body appendData:[@“内容类型：图像/jpeg\r\n\r\n”数据使用编码：NSUTF8StringEncoding]；[正文数据：图像数据]；[body appendData:[[NSString stringWithFormat:@“\r\n”]dataUsingEncoding:NSUTF8StringEncoding]]；}[body appendData:[[NSString stringWithFormat:@”--%@--\r\n，边界]数据使用编码：NSUTF8StringEncoding]]