问题描述
我在 React 中使用 GooglePicker,得到的结果是一个对象数组...
[
{
"id": "1...m","serviceId": "docs","mimeType": "image/jpeg","name": "name.jpg","description": "","type": "photo","lastEditedUtc": 1575388407136,"iconUrl": "https://drive-thirdparty.googleusercontent.com/16/type/image/jpeg","url": "https://drive.google.com/file/d/1...m/view?usp=drive_web","embedUrl": "https://drive.google.com/file/d/1...m/preview?usp=drive_web","sizeBytes": 111364,"rotation": 0,"rotationDegree": 0,"parentId": "0...A"
}]
所以我尝试使用
通过https://www.googleapis.com/drive/v3/files
和直接通过file.url
访问
const fetchOptions = { headers: { Authorization: `Bearer ${accesstoken}` } };
docs.forEach((file) => {
...
fetch(file.url,fetchOptions).then((res) => {
const blob = res.blob();
uploadFile(blob);
});
});
但我得到 403
或 CORS
;我尝试在选择器中设置 relayUrl
,但这破坏了选择器。
注意事项:
- 我的 auth2 中有这 3 个范围:
['https://www.googleapis.com/auth/drive.file','https://www.googleapis.com/auth/drive','https://www.googleapis.com/auth/drive.readonly']```
- 我将计算机的 url 端口和协议设置为 Authorized JavaScript origins 和 Authorized redirect URIs
有什么想法吗?
编辑 1:
我也尝试过像这样使用 Google Api:
const FILE_URL = 'https://www.googleapis.com/drive/v3/files';
const url = isDoc
? `${FILE_URL}/${file.id}/export?mimeType=${mimeType}`
: `${FILE_URL}/${file.id}?alt=media`;
fetch(url,fetchOptions).then((res) => {
const blob = res.blob();
uploadFile(blob);
});
解决方法
您需要 Drive API
从您的问题来看,您似乎正在尝试使用 Google Picker 完成所有工作。但是,选择器只会为您提供有限的文件元数据,因此您可以使用您的帐户打开它们(即在另一个窗口中查看它们)或让您上传文件。如果要下载实际文件,则需要使用 Drive API。
Drive Quickstart for browser JavaScript
流程可能是:
- 让用户选择文件
- 获取元数据对象
- 从对象中提取文件 id
- 调用 Drive API(
get
和alt='media'
)
如果我误解了并且您已经在使用 Drive API,那么查看相关代码会很有帮助。
参考
编辑:
以下是使用 Picker API 通过 gapi
提供给 Drive API 的示例,使用相同的登录客户端。
HTML
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta charset="utf-8" />
<title>Google Picker Example</title>
</head>
<body>
<button id="authorize_button" style="display: none;">Authorize</button>
<button id="signout_button" style="display: none;">Sign Out</button>
<div id="result"></div>
<script type="text/javascript" src="script.js"></script>
<script async defer src="https://apis.google.com/js/api.js"
onload="this.onload=function(){};handleClientLoad()"
onreadystatechange="if (this.readyState === 'complete') this.onload()">
</script>
</body>
</html>
JS
const API_KEY = 'AI...';
const CLIENT_ID = '44...';
const appId = "44...";
const SCOPES = ["https://www.googleapis.com/auth/drive"];
const DISCOVERY_DOCS = [
"https://www.googleapis.com/discovery/v1/apis/drive/v3/rest",];
const authorizeButton = document.getElementById("authorize_button");
const signoutButton = document.getElementById("signout_button");
// Use the Google API Loader script to load the google.picker script.
function handleClientLoad() {
gapi.load("client:auth2:picker",initClient);
}
function initClient() {
gapi.client.init({
apiKey: API_KEY,clientId: CLIENT_ID,discoveryDocs: DISCOVERY_DOCS,scope: SCOPES[0]
})
.then(
function () {
// Listen for sign-in state changes.
gapi.auth2.getAuthInstance().isSignedIn.listen(handleSignIn);
// Handle the initial sign-in state.
handleSignIn(gapi.auth2.getAuthInstance().isSignedIn.get());
authorizeButton.onclick = handleAuthClick;
signoutButton.onclick = handleSignoutClick;
},function (error) {
appendPre(JSON.stringify(error,null,2));
}
);
}
function handleSignIn(isSignedIn) {
if (isSignedIn) {
authorizeButton.style.display = "none";
signoutButton.style.display = "block";
createPicker();
} else {
authorizeButton.style.display = "block";
signoutButton.style.display = "none";
}
}
function handleAuthClick(event) {
gapi.auth2.getAuthInstance().signIn();
}
function handleSignoutClick(event) {
gapi.auth2.getAuthInstance().signOut();
}
function createPicker() {
const token = gapi.client.getToken().access_token
if (token) {
let view = new google.picker.View(google.picker.ViewId.DOCS);
view.setMimeTypes("image/png,image/jpeg,image/jpg");
let picker = new google.picker.PickerBuilder()
.enableFeature(google.picker.Feature.NAV_HIDDEN)
.enableFeature(google.picker.Feature.MULTISELECT_ENABLED)
.setAppId(appId)
.setOAuthToken(token)
.addView(view)
.addView(new google.picker.DocsUploadView())
.setDeveloperKey(API_KEY)
.setCallback(getFile)
.build();
picker.setVisible(true);
}
}
function getFile(pickerResp) {
gapi.client.drive.files
.get({
fileId: pickerResp.docs[0].id,alt: 'media'
})
.then(resp => {
console.log("fetch response",resp.status)
let binary = resp.body
// EDIT - addition from Gabrielle vvvv
let l = binary.length
let array = new Uint8Array(l);
for (var i = 0; i<l; i++){
array[i] = binary,charCodeAt(i);
}
let blob = new Blob([array],{type: 'application/octet-stream'});
// EDIT - addition from Gabrielle ^^^^
}
此代码改编自 Drive Quickstart 和 Picker Quickstart。
注意 - 这确实会在控制台中出现错误,但它似乎完全一样。这似乎是 Picker 的错误 - https://issuetracker.google.com/177046274
来自 Gabrielle 的编辑
注意 - 使用带有 alt = media
的 get 是针对二进制文件的。要获取工作表/文档/幻灯片等,您需要使用 export
端点。