如何使用 node.js 为上传到 Google 云存储的文件设置内容类型
How to set the Content-Type for a file being uploaded to Google Cloud Storage using node.js
我正在编写代码,使用 gcloud-node 将使用 node-fetch 获取的文件上传到 Google Cloud Storage 中的存储桶。
到目前为止一切正常,但我无法找到如何为 GCloud 上的文件设置 Content-Type
,否则文件将下载为 application/octet-stream
。
这是我目前的代码:
function saveImage(response, destFile) {
return new Promise((resolve, reject) => {
if (response.status !== 200) {
reject(new Error('Bad Response'));
}
// How do I set this on the file uploaded to the bucket?
const contentType = response.headers.get('Content-Type');
try {
const file = bucket.file(destFile);
const writeStream = file.createWriteStream();
writeStream.on('error', err => {
reject(err);
});
writeStream.on('finish', () => {
resolve(getPublicUrl(destFile));
});
response.body.pipe(writeStream);
} catch (e) {
reject(e);
}
});
}
事实证明文件上有一个 setMetadata 方法,您可以调用该方法并将 Content-Type 作为参数传递。工作代码如下所示:
function saveImage(response, destFile) {
return new Promise((resolve, reject) => {
if (response.status !== 200) {
reject(new Error('Bad Response'));
}
const contentType = response.headers.get('Content-Type');
try {
const file = bucket.file(destFile);
const writeStream = file.createWriteStream({
metadata:{
contentType: contentType
}
});
writeStream.on('error', err => {
reject(err);
});
writeStream.on('finish', () => {
resolve(getPublicUrl(destFile));
});
response.body.pipe(writeStream);
} catch (e) {
reject(e);
}
});
}
我正在编写代码,使用 gcloud-node 将使用 node-fetch 获取的文件上传到 Google Cloud Storage 中的存储桶。
到目前为止一切正常,但我无法找到如何为 GCloud 上的文件设置 Content-Type
,否则文件将下载为 application/octet-stream
。
这是我目前的代码:
function saveImage(response, destFile) {
return new Promise((resolve, reject) => {
if (response.status !== 200) {
reject(new Error('Bad Response'));
}
// How do I set this on the file uploaded to the bucket?
const contentType = response.headers.get('Content-Type');
try {
const file = bucket.file(destFile);
const writeStream = file.createWriteStream();
writeStream.on('error', err => {
reject(err);
});
writeStream.on('finish', () => {
resolve(getPublicUrl(destFile));
});
response.body.pipe(writeStream);
} catch (e) {
reject(e);
}
});
}
事实证明文件上有一个 setMetadata 方法,您可以调用该方法并将 Content-Type 作为参数传递。工作代码如下所示:
function saveImage(response, destFile) {
return new Promise((resolve, reject) => {
if (response.status !== 200) {
reject(new Error('Bad Response'));
}
const contentType = response.headers.get('Content-Type');
try {
const file = bucket.file(destFile);
const writeStream = file.createWriteStream({
metadata:{
contentType: contentType
}
});
writeStream.on('error', err => {
reject(err);
});
writeStream.on('finish', () => {
resolve(getPublicUrl(destFile));
});
response.body.pipe(writeStream);
} catch (e) {
reject(e);
}
});
}