nsurlsessionuploadtask多图片上传

NSURLSessionUploadTask多图片上传

使用NSURLSessionUploadTask实现多图片上传, 图片N张, 参数字典一个,代码如下:
typedef void (^SuccessBlock) (id responder);
typedef void (^ErrorBlock) (id errorCode);

#define Kboundary @”—-anycharisok”

#define kDictIsEmpty(dic) (dic == nil || [dic isKindOfClass:[NSNull class]] || dic.allKeys == 0)

• (void)CRPOSTUploadtWithRequestUrl:(NSString )urlStr
  withParameter:(NSDictionary )parameter
  withImageArray:(NSArray )imageArray
  WithReturnValueBlock:(SuccessBlock)successBlock
  errorCodeBlock:(ErrorBlock)errorBlock {
  NSURLSession session = [NSURLSession sessionWithConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration] delegate:nil delegateQueue:[NSOperationQueue mainQueue]];
  NSMutableURLRequest request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:urlStr]];
  NSString headerStr = [NSString stringWithFormat:@”multipart/form-data;boundary=%@”,Kboundary];
  [request setValue:headerStr forHTTPHeaderField:@”Content-Type”];
  [request setHTTPMethod:@”POST”];
  [request setCachePolicy:NSURLRequestReloadIgnoringCacheData];
  [request setTimeoutInterval:20];
  NSData data = [self getBodyDataWithParameter:parameter WithArray:imageArray];
  NSURLSessionUploadTask uploadTask = [session uploadTaskWithRequest:request fromData:data completionHandler:^(NSData data, NSURLResponse response, NSError error) {
  if (!error && response != nil) {
  NSDictionary dict = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:nil];
  if (!kDictIsEmpty(dict)) {
  dispatch_async(dispatch_get_main_queue(), ^{
  successBlock(dict);
  });
  }
  }else{
  dispatch_async(dispatch_get_main_queue(), ^{
  errorBlock(error);
  });
  }
  }];
  [uploadTask resume];
  }

• (NSData )getBodyDataWithParameter:(NSDictionary )parameter WithArray:(NSArray )imageArray {
  NSMutableData myData = [NSMutableData data];
  NSMutableString body=[[NSMutableString alloc]init];
  [body appendFormat:@”–%@rn”,Kboundary];
  [body appendFormat:@”Content-Disposition: form-data; name=%@rnrn”,@”inputStr”];
  NSData bodyData = [NSJSONSerialization dataWithJSONObject:parameter options:NSJSONWritingPrettyPrinted error:nil];
  NSString *cargos = [[NSString alloc] initWithData:bodyData encoding:NSUTF8StringEncoding];
  [body appendFormat:@”%@”,cargos];
  [body appendFormat:@”rn”];
  [myData appendData:[body dataUsingEncoding:NSUTF8StringEncoding]];

for (int i = 0; i < imageArray.count; i++) {
NSMutableString imgbody = [[NSMutableString alloc] init];
[imgbody appendFormat:@”–%@rn”,Kboundary];
[imgbody appendFormat:@”Content-Disposition: form-data; name=”file%d”; filename=”%@.png”rn”,i,[self uuidString]];
[imgbody appendFormat:@”Content-Type: image/png; charset=utf-8rnrn”];
[myData appendData:[imgbody dataUsingEncoding:NSUTF8StringEncoding]];
NSData data = [NSData data];
data = UIImageJPEGRepresentation(imageArray[i], 1.0f);
NSString base64Encoded = [data base64EncodedStringWithOptions:0];
NSData dataBase64String = [[NSData alloc] initWithBase64EncodedString:base64Encoded options:0];
[myData appendData:dataBase64String];
[myData appendData:[@”rn” dataUsingEncoding:NSUTF8StringEncoding]];
}
[myData appendData:[[NSString stringWithFormat:@”–%@–rn”,Kboundary] dataUsingEncoding:NSUTF8StringEncoding]];
return [myData copy];
}