1 跨域问题
如果步骤都正确还一直报跨域问题
原因可能由于未加如下配置导致:
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   | <ExposeHeader>x-amz-server-side-encryption</ExposeHeader> 		<ExposeHeader>x-amz-request-id</ExposeHeader> 		<ExposeHeader>x-amz-id-2</ExposeHeader> 		<ExposeHeader>ETag</ExposeHeader>
   | 
则尝试如下设置:
AWS S3 CROS设置如下:
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   | <?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> 		<MaxAgeSeconds>3000</MaxAgeSeconds> 		<ExposeHeader>x-amz-server-side-encryption</ExposeHeader> 		<ExposeHeader>x-amz-request-id</ExposeHeader> 		<ExposeHeader>x-amz-id-2</ExposeHeader> 			<ExposeHeader>ETag</ExposeHeader> 		<AllowedHeader>*</AllowedHeader> 	</CORSRule> </CORSConfiguration>
   | 
参考跨源资源共享
http://docs.aws.amazon.com/zh_cn/AmazonS3/latest/dev/cors.html
http://docs.aws.amazon.com/zh_cn/sdk-for-javascript/v2/developer-guide/s3-example-photo-album.html