cloudinary上传文件找不到文件

Question

我想使用cloudinary上传一个文件，但它不起作用。文件字符串参数应该是什么？

@Injectable()
export class CloudinaryService {
async uploadImage(
file: Express.Multer.File,
id: string,
): Promise<UploadApiResponse | UploadApiErrorResponse> {
return new Promise((resolve, reject) => {
v2.uploader.upload(
file.filename,
{ public_id: id, folder: 'business', resource_type: 'auto' },
(error, result) => {
if (error) return reject(error);
resolve(result);
},
);
});
}
}

这是文件对象

{
fieldname: 'DirectorsDetails',
originalname: 'Eddy - Information about directors.xlsx',
encoding: '7bit',
mimetype: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
buffer: <Buffer 50 4b 03 04 14 00 08 08 08 00 14 2a be 52 00 00 00 00 00 00 00 00 00 00 00 00 18 00 00 00 78 6c 2f 64 72 61 77 69 6e 67 73 2f 64 72 61 77 69 6e 67 31 ... 5072 more bytes>,
size: 5122
}

Answer 1

试试这个，看看它是否有帮助：

调整多路复用器以使用内存存储在后期获取缓冲区

// app.module.ts
import { MulterModule } from '@nestjs/platform-express';
import { memoryStorage } from 'multer';
@Module({
imports: [
...
MulterModule.register({
storage: memoryStorage(), // use memory storage for having the buffer
}),
],
controllers: [AppController],
providers: [AppService],
})
export class AppModule {}

将缓冲区转换为流并引导其上传

import { Injectable } from '@nestjs/common';
import { UploadApiErrorResponse, UploadApiResponse, v2 } from 'cloudinary';
import { Readable } from 'stream';
@Injectable()
export class CloudinaryService {
async uploadImage(
file: Express.Multer.File,
): Promise<UploadApiResponse | UploadApiErrorResponse> {
return new Promise((resolve, reject) => {
const upload = v2.uploader.upload_stream((error, result) => {
if (error) return reject(error);
resolve(result);
});
Readable.from(file.buffer).pipe(upload); // covert buffer to readable stream and pass to upload
});
}
}

---

如果你想先把它保存到本地目录，你可以这样做，但你需要通过fs.createReadStream从路径中读取文件，形成一个流，并上传到cloudinary。

---

如果你不能让它工作，我可以上传一个例子到github让你交叉检查。

Answer 2

file.filename只有在磁盘上存储多个文件时才会填充。也许file.originalname就是你要找的房产。

Answer 3

尝试使用upload_stream函数。

import { FileUpload } from 'graphql-upload';
export class CloudinaryService {
async uploadImage(
file: FileUpload,
): Promise<UploadApiResponse | UploadApiErrorResponse> {
return new Promise((resolve, reject) => {
const upload = v2.uploader.upload_stream((error, result) => {
if (error) return reject(error);
resolve(result);
});
file.createReadStream().pipe(upload);
});
}
}