小编kyr*_*ten的帖子

我们正在尝试使用jQuery ajax和预先签名的URL将文件上传到S3.我们在服务器上生成预先指定的URL.目前我们正在尝试使用FormData上传文件.

          var uploadData = new FormData(),
            files = $(this.input).prop('files'),
            file = files[0];

          uploadData.append('file', file);

          $.ajax({
            url: '{presigned url string}',
            type: 'PUT',
            data: uploadData,
            cache: false,
            processData: false,
            contentType: false,
            success: function(response) {
              console.log('S3 upload success!');
            },
            error: function(response) {
              console.log('Error with S3 upload: ' + response.statusText);
            }
          });

这将从AWS返回SignatureDoesNotMatch错误:

<Error><Code>SignatureDoesNotMatch</Code><Message>The request signature we 
calculated does not match the signature you provided. Check your key and 
signing method.</Message><StringToSignBytes>50 55 54 0a 0a 6d 75 6c 74 69 70 …