如何使用AWS的iOS SDK上传来自设备的图像，并设置为公开 [英] How to use AWS iOS SDK to upload image from device and set to public

问题描述

由于我们似乎仅限于桶的数目，我想弄清楚如何完成以下任务：

Since it seems we are limited to the number of buckets, I'm trying to figure out how to accomplish the following:

• 在我有一个iOS应用程序，用户可以上传个人资料图片。
• 资料图片任何人都可以看到（我想它公开）。
• 在理想情况下，我可以上传到一个桶（例如：myprofilepics.s3.amazonaws.com）
• 在理想的情况下，每个用户可以上传自己的子文件夹（例如：myprofilepics.s3.amazonaws.com/images/userXXX /
• 在理想情况下，我上传的图片，并将其设置为公共访问直接从应用程序，以便其他用户可以立即查看个人资料图片。

我缺少的东西在文档中？我AP preciate在这个问题上的任何反馈。

Am I missing something in the documentation? I appreciate any feedback on this issue.

推荐答案

要解决这个问题，我开始与亚马逊的样品code在他们的iOS SDK中发现的此处。在SDK的压缩，感兴趣的示例项目可以在样本中找到/ S3_Uploader 。

To solve this problem, I started with Amazon's sample code in their iOS SDK, found here. In the SDK zip, the sample project of interest can be found at samples/S3_Uploader.

要从示例项目得到在其中上传的图片是公共，你只需要添加在正确的地方一条线：

To get from that sample project to one in which the uploaded image is public, you simply need to add one line in the right place:

por.cannedACL   = [S3CannedACL publicRead];

其中， POR 是 S3PutObjectRequest 用来上传的图像。

where por is the S3PutObjectRequest used to upload the image.

我的项目的code上传看起来像这样（看起来几乎相同，Amazon的样品code）：

My project's code for uploading looks like this (looks almost identical to Amazon's sample code):

NSString *uuid = @""; // Generate a UUID however you like, or use something else to name your image.
UIImage *image; // This is the UIImage you'd like to upload.

// This URL is not used in the example, but it points to the file
// to be uploaded.
NSString *url = [NSString pathWithComponents:@[ @"https://s3.amazonaws.com/", AWS_PICTURE_BUCKET, uuid ]];

// Convert the image to JPEG data. Use UIImagePNGRepresentation for pngs
NSData *imageData = UIImageJPEGRepresentation(image, 1.0);

// Create the S3 Client.
AmazonS3Client *s3 = [[AmazonS3Client alloc] initWithAccessKey:AWS_ACCESS_KEY_ID withSecretKey:AWS_SECRET_KEY];

@try {
    // Create the picture bucket.
    [s3 createBucket:[[S3CreateBucketRequest alloc] initWithName:AWS_PICTURE_BUCKET]];

    // Upload image data.  Remember to set the content type.
    S3PutObjectRequest *por = [[S3PutObjectRequest alloc] initWithKey:uuid inBucket:AWS_PICTURE_BUCKET];
    por.contentType = @"image/jpeg"; // use "image/png" here if you are uploading a png
    por.cannedACL   = [S3CannedACL publicRead];
    por.data        = imageData;
    por.delegate    = self; // Don't need this line if you don't care about hearing a response.

    // Put the image data into the specified s3 bucket and object.
    [s3 putObject:por];
}
@catch (AmazonClientException *exception) {
    NSLog(@"exception");
}

AWS_ACCESS_KEY_ID 和 AWS_SECRET_KEY ，当然，您的AWS凭据， AWS_PICTURE_BUCKET 是你的照片桶。

AWS_ACCESS_KEY_ID and AWS_SECRET_KEY are, of course, your AWS credentials, and AWS_PICTURE_BUCKET is your picture bucket.

这篇关于如何使用AWS的iOS SDK上传来自设备的图像，并设置为公开的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！