iOS通过Http 上传图片

- (NSMutableURLRequest *)PostImageRequest:(NSString *)URLString                                    UIImage:(UIImage*)image                                 parameters:(NSDictionary *)parameters                                    success:(void (^)(id))success                                    failure:(void (^)(NSError *))failure  {      _success = [success copy];      _failure = [failure copy];      //分界线的标识符      NSString *TWITTERFON_FORM_BOUNDARY = @"AaB03x";      //根据url初始化request      _request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:URLString]                                                             cachePolicy:NSURLRequestReloadIgnoringLocalCacheData                                                         timeoutInterval:10];      //分界线 --AaB03x      NSString *MPboundary=[[NSString alloc]initWithFormat:@"--%@",TWITTERFON_FORM_BOUNDARY];      //结束符 AaB03x--      NSString *endMPboundary=[[NSString alloc]initWithFormat:@"%@--",MPboundary];      //得到图片的data      NSData* data = UIImageJPEGRepresentation(image, 1);      //http body的字符串      NSMutableString *body=[[NSMutableString alloc]init];      //参数的集合的所有key的集合      NSArray *keys= [parameters allKeys];         //遍历keys      for(int i=0;i<[keys count];i++)      {          //得到当前key          NSString *key=[keys objectAtIndex:i];          //如果key不是pic，说明value是字符类型，比如name：Boris          if(![key isEqualToString:@"pic"])          {              //添加分界线，换行              [body appendFormat:@"%@\r\n",MPboundary];              //添加字段名称，换2行              [body appendFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n",key];              //添加字段的值              [body appendFormat:@"%@\r\n",[parameters objectForKey:key]];          }      }         ////添加分界线，换行      [body appendFormat:@"%@\r\n",MPboundary];      //声明pic字段，文件名为boris.png      [body appendFormat:@"Content-Disposition: form-data; name=\"ImageField\"; filename=\"x1234.png\"\r\n"];      //声明上传文件的格式      [body appendFormat:@"Content-Type: image/jpeg\r\n\r\n"];         //声明结束符：--AaB03x--      NSString *end=[[NSString alloc]initWithFormat:@"\r\n%@",endMPboundary];      //声明myRequestData，用来放入http body      NSMutableData *myRequestData=[NSMutableData data];      //将body字符串转化为UTF8格式的二进制      [myRequestData appendData:[body dataUsingEncoding:NSUTF8StringEncoding]];      //将image的data加入      [myRequestData appendData:data];      //加入结束符--AaB03x--      [myRequestData appendData:[end dataUsingEncoding:NSUTF8StringEncoding]];         //设置HTTPHeader中Content-Type的值      NSString *content=[[NSString alloc] initWithFormat:@"multipart/form-data; boundary=%@",TWITTERFON_FORM_BOUNDARY];      //设置HTTPHeader      [_request setValue:content forHTTPHeaderField:@"Content-Type"];      //设置Content-Length      [_request setValue:[NSString stringWithFormat:@"%d", [myRequestData length]] forHTTPHeaderField:@"Content-Length"];      //设置http body      [_request setHTTPBody:myRequestData];      //http method      [_request setHTTPMethod:@"POST"];             return _request;  }
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iOS通过Http 上传图片
