ios - 使用 NSURL 发布图像文件和字符串文本参数

Question

我是 iOS 新手。我正在尝试使用 POST 方法发布一些数据，包括图像文件。 picture为最后一个参数

NSString *post = [[NSString alloc]initWithFormat:@"first_name=%@&last_name=%@&email=%@password=%@&picture",[_firstName text],[[_lastName text],[_email text],[_password text],[What to Add Here]];
    NSLog(@"%@",post);

    NSURL *url = [NSURL URLWithString:@"http://test.test.com/ws/customer/authenticate"];

//附加信息

   NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];

            NSMutableURLRequest *request = [[NSMutableURLRequest alloc]init];


            [request setURL:url];
            [request setHTTPMethod:@"POST"];
            //[request setValue:postLength forKey:@"Content-Length"];
            [request setValue:@"application/json" forHTTPHeaderField:@"Accept"];
            [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
            [request setHTTPBody:postData];

            NSError *error = [[NSError alloc] init];
            NSHTTPURLResponse *response = nil;
            NSData *urlData=[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];

            NSLog(@"Response code: %ld", (long)[response statusCode]);

我可以只使用像@"demo.jpg"这样的图片路径吗？

Answer 1

一种可能的解决方案是:

UIImage *image = [UIImage imageNamed: "demo.png"];
NSData *dataImage = UIImagePNGRepresentation(image);
// request
...
[request setHTTPBody: dataImage];

在您的情况下，您可以使用 base64:

UIImage *image = [UIImage imageNamed: "demo.png"];
NSData *dataImage = UIImagePNGRepresentation(image);
NSString *stringImage = [dataImage base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];
NSString *post = [[NSString alloc]initWithFormat:@"first_name=%@&last_name=%@&email=%@password=%@&picture",[_firstName text],[[_lastName text],[_email text],[_password text], stringImage];

希望对你有帮助