S3预设url的GET请求返回二进制格式，而不是下载文档

Question

我正在通过预先指定的URL PUT上传文件到AWS S3。

当我尝试通过预先指定的URL GET下载文件时，而不是文件下载，我得到:

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

在邮差中看起来像:

----------------------------878825365203444616093993

附加项:格式;name ="file";文件名="cat.jpg"内容类型:图像/jpeg

<无法上传到堆栈溢出>---------------------------- 878825365203444616093993——

下面是PUT请求:

var url = document.currentScript.getAttribute('presignedurl');
function doupload() {
var formData = new FormData();
var data = document.getElementById("file").files[0];
formData.append('file', data);

fetch(url,
{
method: 'PUT',
headers: {
"x-amz-acl": "bucket-owner-full-control"
},
body: formData, 
}
).then(function(response) {console.log("Response:", response);})
.then(function(result) {console.log("Success:", result);})
.catch(function(error) {console.log("Error:", error)});
};

下面是GET请求:

function download() {       
fetch(url,
{ 
method: 'GET',
headers: {
"x-amz-acl": "bucket-owner-full-control"
},
}
).then(function(response) {
console.log("Response:", response);
response.blob().then(blob => {
return {
contentType: response.headers.get("Content-Type"),
raw: blob
}
})
})
.then(function(data) { 
return imageHandler(data.contentType, data.raw);
})
.then(function(result) { console.log("Success:", result); })
.catch(function(error) { console.log("Error:", error) });
};

我怎么做才能让文档下载?

非常感谢你的帮助!

Answer 1

文件可能被压缩过。

在你的get请求中添加一个accept-encoding http头，比如gzip。

accept-encoding可能的值:https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Accept-Encoding