前端 - 使用AWS S3下载，报错怎么解决？

Question

咨询大佬们一个问题，如题，下载时报错，但是我的项目中没有这个process.hrtime，这需要怎么解决呢，拜谢！

          let url = 's3://Z2xhbmNl:f558398d7462dc84cc9bbbf5b403c2c2@13.1.2.30:9500/iaas-image/e613f030-a2de-492b-a14e-c6a3d3de8dc5';          let regex = 's3://(.*):(.*)@(.*)/(.*)/(.*)';          let arr = url.match(regex);          let bucketName = arr[4];          let key = arr[5];          let endpoint = arr[3];          let accessKeyId = arr[1];          let secretAccessKey = arr[2];          // 创建下载链接          console.log(bucketName, key, endpoint, accessKeyId, secretAccessKey);          const params = {            Bucket: bucketName,            Key: key,            // Expires: process.hrtime(),            // ResponseContentDisposition: 'attachment; filename = a.txt'          };          const s3 = new AWS.S3({            endpoint: endpoint,            accessKeyId: accessKeyId,            secretAccessKey: secretAccessKey,            s3ForcePathStyle: true,            signatureVersion: 'v4'          });          s3.getSignedUrl('getObject', params, (err, url) => {            if (err) {              console.error('无法生成镜像文件：', err);            } else {              // 使用生成的URL下载图片              window.open(url);            }          });

使用这种AWS S3的方法下载，为是哪里写错了吗，控制台报错 TypeError: process.hrtime is not a function

Answer 1

获取的是纳秒时间,没必要,用Date.now() 也行,不使用process.hrtime这个方法来获取时间也没问题,不过一般前端不放secretAccessKey这种敏感信息,由后端来处理这些秘钥生成。防止密钥泄露,你可以看这个参考一下

import { S3 } from 'aws-sdk';import fs from 'fs';export default class S3Service {    s3: S3;    constructor() {        this.s3 = new S3({            apiVersion: *****,            region: ********        });    }        //Download File    async download(bucketName: string, keyName: string, localDest?: string): Promise<any> {        if (typeof localDest == 'undefined') {            localDest = keyName;        }        const params = {            Bucket: bucketName,            Key: keyName        };        console.log("params: ", params);        let writeStream = fs.createWriteStream(localDest);        return new Promise<any>((resolve, reject) => {            const readStream = this.s3.getObject(params).createReadStream();            // Error handling in read stream            readStream.on("error", (e) => {                console.error(e);                reject(e);            });            // Resolve only if we are done writing            writeStream.once('finish', () => {                resolve(keyName);            });            // pipe will automatically finish the write stream once done            readStream.pipe(writeStream);        });     }  }

Answer 2

if(!val.properties.locations.length){

            this.$warn('文件不存在');            return false;          }          let url = val.properties.locations[0].url;          let regex = 's3://(.*):(.*)@(.*)/(.*)/(.*)';          let arr = url.match(regex);          let bucketName = arr[4];          let key = arr[5];          let endpoint = arr[3];          let accessKeyId = arr[1];          let secretAccessKey = arr[2];          // 创建下载链接          const params = {            Bucket: bucketName,            Key: key,            Expires: 100,            ResponseContentDisposition: `attachment; filename = ${val.name}.${val.disk_format}`          };          const s3 = new AWS.S3({            endpoint: 'http://' + endpoint,            accessKeyId: accessKeyId,            secretAccessKey: secretAccessKey,            s3ForcePathStyle: true,            signatureVersion: 'v4'          });          s3.getSignedUrl('getObject', params, (err, url) => {            if (err) {              console.error('无法生成文件：', err);            } else {              // 使用生成的URL下载图片              window.open(url);            }          });

如果出现process.hrtime is not a function可能是jsconfig.json中的"target": "ES6"问题，需要注释掉，要么就是更改依赖文件中的process.hrtime为Date.now，这个第二种我没有试在打包部署之后会不会有什么问题