如何在Node.js/Strapi中保存文件实例
如何在Node.js/Strapi中保存文件实例
提问于 2022-04-20 07:23:10
我需要保存从前台/邮递员收到的文件。例如，.txt文件：
在此之后，在后端，我得到这样的文件：
const { body, files } = ctx.request;"ctx“它是对象，指的是Strapi API。这个文件看起来像
console.log(files.client)它是File的实例：
File {
_events: [Object: null prototype] {},
_eventsCount: 0,
_maxListeners: undefined,
size: 7,
path: 'C:\\Users\\vvv\\AppData\\Local\\Temp\\upload_552c6e1cb7710c6c490533566b7be1d1',
name: '111.txt',
type: 'text/plain',
hash: null,
lastModifiedDate: 2022-04-20T06:41:53.462Z,
_writeStream: WriteStream {
fd: null,
path: 'C:\\Users\\vvv\\AppData\\Local\\Temp\\upload_552c6e1cb7710c6c490533566b7be1d1',
flags: 'w',
mode: 438,
start: undefined,
pos: undefined,
bytesWritten: 7,
closed: true,
_writableState: WritableState {
objectMode: false,
highWaterMark: 16384,
finalCalled: false,
needDrain: false,
ending: true,
ended: true,
finished: true,
destroyed: true,
decodeStrings: true,
defaultEncoding: 'utf8',
length: 0,
writing: false,
corked: 0,
sync: false,
bufferProcessing: false,
onwrite: [Function: bound onwrite],
writecb: null,
writelen: 0,
afterWriteTickInfo: null,
buffered: [],
bufferedIndex: 0,
allBuffers: true,
allNoop: true,
pendingcb: 0,
constructed: true,
prefinished: true,
errorEmitted: false,
emitClose: true,
autoDestroy: true,
errored: null,
closed: true,
closeEmitted: true,
[Symbol(kOnFinished)]: []
},
_events: [Object: null prototype] {},
_eventsCount: 0,
_maxListeners: undefined,
[Symbol(kFs)]: {
appendFile: [Function: appendFile],
appendFileSync: [Function: appendFileSync],
access: [Function: access],
accessSync: [Function: accessSync],
chown: [Function: chown],
chownSync: [Function: chownSync],
chmod: [Function: chmod],
chmodSync: [Function: chmodSync],
close: [Function: close],
closeSync: [Function: closeSync],
copyFile: [Function: copyFile],
copyFileSync: [Function: copyFileSync],
cp: [Function: cp],
cpSync: [Function: cpSync],
createReadStream: [Function: createReadStream],
createWriteStream: [Function: createWriteStream],
exists: [Function: exists],
existsSync: [Function: existsSync],
fchown: [Function: fchown],
fchownSync: [Function: fchownSync],
fchmod: [Function: fchmod],
fchmodSync: [Function: fchmodSync],
fdatasync: [Function: fdatasync],
fdatasyncSync: [Function: fdatasyncSync],
fstat: [Function: fstat],
fstatSync: [Function: fstatSync],
fsync: [Function: fsync],
fsyncSync: [Function: fsyncSync],
ftruncate: [Function: ftruncate],
ftruncateSync: [Function: ftruncateSync],
futimes: [Function: futimes],
futimesSync: [Function: futimesSync],
lchown: [Function: lchown],
lchownSync: [Function: lchownSync],
lchmod: undefined,
lchmodSync: undefined,
link: [Function: link],
linkSync: [Function: linkSync],
lstat: [Function: lstat],
lstatSync: [Function: lstatSync],
lutimes: [Function: lutimes],
lutimesSync: [Function: lutimesSync],
mkdir: [Function: mkdir],
mkdirSync: [Function: mkdirSync],
mkdtemp: [Function: mkdtemp],
mkdtempSync: [Function: mkdtempSync],
open: [Function: open],
openSync: [Function: openSync],
opendir: [Function: opendir],
opendirSync: [Function: opendirSync],
readdir: [Function: readdir],
readdirSync: [Function: readdirSync],
read: [Function: read],
readSync: [Function: readSync],
readv: [Function: readv],
readvSync: [Function: readvSync],
readFile: [Function: readFile],
readFileSync: [Function: readFileSync],
readlink: [Function: readlink],
readlinkSync: [Function: readlinkSync],
realpath: [Function],
realpathSync: [Function],
rename: [Function: rename],
renameSync: [Function: renameSync],
rm: [Function: rm],
rmSync: [Function: rmSync],
rmdir: [Function: rmdir],
rmdirSync: [Function: rmdirSync],
stat: [Function: stat],
statSync: [Function: statSync],
symlink: [Function: symlink],
symlinkSync: [Function: symlinkSync],
truncate: [Function: truncate],
truncateSync: [Function: truncateSync],
unwatchFile: [Function: unwatchFile],
unlink: [Function: unlink],
unlinkSync: [Function: unlinkSync],
utimes: [Function: utimes],
utimesSync: [Function: utimesSync],
watch: [Function: watch],
watchFile: [Function: watchFile],
writeFile: [Function: writeFile],
writeFileSync: [Function: writeFileSync],
write: [Function: write],
writeSync: [Function: writeSync],
writev: [Function: writev],
writevSync: [Function: writevSync],
Dir: [class Dir],
Dirent: [class Dirent],
Stats: [Function: Stats],
ReadStream: [Getter/Setter],
WriteStream: [Getter/Setter],
FileReadStream: [Getter/Setter],
FileWriteStream: [Getter/Setter],
_toUnixTimestamp: [Function: toUnixTimestamp],
F_OK: 0,
R_OK: 4,
W_OK: 2,
X_OK: 1,
constants: [Object: null prototype],
promises: [Getter]
},
[Symbol(kIsPerformingIO)]: false,
[Symbol(kCapture)]: false
},
[Symbol(kCapture)]: false
}如何将其保存在服务器上？我正试图通过fs.writeFile和fs.createWriteStream做这件事
fs.writeFile(filePath, files.client, function(err) {
if(err) {
return console.log(err);
}
console.log("The file was saved!");
});或
let writeableStream = fs.createWriteStream(filePath);
writeableStream.write(files.client);但每次我出差错：
TypeError [ERR_INVALID_ARG_TYPE]: The "data" argument must be of type string or an instance of Buffer, TypedArray, or DataView. Received an instance of FileTypeError [ERR_INVALID_ARG_TYPE]: The "chunk" argument must be of type string or an instance of Buffer or Uint8Array. Received an instance of FileStack Overflow用户
回答已采纳
发布于 2022-04-20 09:08:42
我自己找到了解决办法。文件已经被下载在服务器上，我们只需要将它从一个文件夹移到另一个文件夹。文件对象中包含临时文件夹的路径。也许它会对某些人有用：
const fs = require('fs')
const oldPath = 'C:\\Users\\vvv\\AppData\\Local\\Temp\\upload_552c6e1cb7710c6c490533566b7be1d1'
const newPath = 'new/path/file.txt'
fs.rename(oldPath, newPath, function (err) {
if (err) throw err
console.log('Successfully renamed - AKA moved!')
})页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/71935667
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