方式一： 以文件流的方法上传图片
- (void)file { NSDictionary *params = @{ @"access_token":@"d5a05f9f-34a0-4c48-a7a2-90a5818ca9a2" }; NSString *url = [NSString stringWithFormat:@"%@1.0/user/photo",kRequestUrl]; AFHTTPSessionManager *manager = [AFHTTPSessionManager manager]; manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"application/json", @"text/html", @"image/jpeg", @"image/png", @"application/octet-stream", @"text/json", nil]; NSURLSessionDataTask *task = [manager POST:url parameters:params constructingBodyWithBlock:^(id<AFMultipartFormData> _Nonnull formData) { // image 需要设置成 nsdata NSData *imageData = [self.images TIFFRepresentation]; NSBitmapImageRep *imageRep = [NSBitmapImageRep imageRepWithData:imageData]; [imageRep setSize:[[_imageView image] size]]; NSData *imageDatas = [imageRep representationUsingType:NSPNGFileType properties:nil]; NSDateFormatter *formatter = [[NSDateFormatter alloc]init]; formatter.dateFormat = @"yyyyMMddHHmmss"; NSString *str = [formatter stringFromDate:[NSDate date]]; NSString *fileName = [NSString stringWithFormat:@"%@.jpg", str]; [formData appendPartWithFileData:imageDatas name:@"photo" fileName:fileName mimeType:@"image/png"]; } success:^(NSURLSessionDataTask * _Nonnull task, id _Nonnull responseObject) { NSLog(@"%@", responseObject); } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) { NSLog(@"%@", error); }]; }