对我来说，不加区域

Const s3 = new aws。S3({apiVersion: '2006-03-01'，区域:'us-west-2'});

这是一种简单的工作方法。

我知道这是一个老问题，但仍然很难找到解决办法。

首先，我用Rails 4、Paperclip 4、CamanJS、Heroku和AWS S3构建了一个项目。

你必须使用crossorigin: "anonymous"参数请求你的图像。

    <img href="your-remote-image.jpg" crossorigin="anonymous"> 

Add your site URL to CORS in AWS S3. Here is a refference from Amazon about that. Pretty much, just go to your bucket, and then select "Properties" from the tabs on the right, open "Permissions tab and then, click on "Edit CORS Configuration". Originally, I had < AllowedOrigin> set to *. Just change that asterisk to your URL, be sure to include options like http:// and https:// in separate lines. I was expecting that the asterisk accepts "All", but apparently we have to be more specific than that.

对我来说是这样的。

我尝试了上面所有的答案，没有一个工作。实际上，我们需要从上述答案中总结出3个步骤来实现它:

As suggested by Flavio; add CORS configuration on your bucket: <CORSConfiguration> <CORSRule> <AllowedOrigin>*</AllowedOrigin> <AllowedMethod>GET</AllowedMethod> </CORSRule> </CORSConfiguration> On the image; mention crossorigin: <img href="abc.jpg" crossorigin="anonymous"> Are you using a CDN? If everything works fine connecting to origin server but NOT via CDN; it means you need some setting on your CDN like accept CORS headers. Exact setting depends on which CDN you are using.

我把它写如下:

<?xml version="1.0" encoding="UTF-8"?>
<CORSConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
<CORSRule>
    <AllowedOrigin>*</AllowedOrigin>
    <AllowedMethod>GET</AllowedMethod>
    <MaxAgeSeconds>3000</MaxAgeSeconds>
    <AllowedHeader>*</AllowedHeader>
</CORSRule>
</CORSConfiguration>

为什么<AllowedHeader>*</AllowedHeader> is working and <AllowedHeader>Authorization</AllowedHeader> not?

见以上答案。(但我也有一个chrome bug)

不要在CHROME中加载和显示图片。(如果稍后要创建一个新实例)

在我的例子中，我加载图像并在页面上显示它们。当它们被点击时，我创建了它们的一个新实例:

// there is already an html <img /> on the page, I'm creating a new one now
img = $('<img crossorigin />')[0]
img.onload = function(){
  context.drawImage(img, 0, 0)
  context.getImageData(0,0,w,h)
}
img.src = 'http://s3.amazonaws.com/my/image.png'; // I added arbitrary ?crossorigin to change the URL of this to fix it

Chrome已经缓存了另一个版本，从来没有试图重新获取交叉来源版本(即使我在显示的图像上使用交叉来源)。

为了解决这个问题，我添加了?crossorigin到图像url的末尾(但你可以添加?blah，这只是随意改变缓存状态)，当我为画布加载它。让我知道，如果你找到一个更好的修复CHROME

这个配置为我解决了问题:

<?xml version="1.0" encoding="UTF-8"?>
<CORSConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
<CORSRule>
    <AllowedOrigin>*</AllowedOrigin>
    <AllowedMethod>GET</AllowedMethod>
    <AllowedMethod>PUT</AllowedMethod>
    <AllowedMethod>POST</AllowedMethod>
    <AllowedMethod>DELETE</AllowedMethod>
    <AllowedMethod>HEAD</AllowedMethod>
    <MaxAgeSeconds>3000</MaxAgeSeconds>
    <ExposeHeader>ETag</ExposeHeader>
    <AllowedHeader>*</AllowedHeader>
</CORSRule>
</CORSConfiguration>