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mp-upload-oss-helper

v1.1.0

Published

小程序上传至oss, 后端计算参数的工具

Downloads

3

Readme

mp-upload-oss-helper

mp-upload-oss-helper 是一个用于辅助微信小程序, 上传文件至 OSS 的后端辅助工具. 虽然 OSS 并未提供小程序的 sdk, 但是提供了通用的 API 接口, 而微信小程序的上传方法, 本质上是一个 POST 请求. 经过查阅 OSS微信小程序的文档, 采用后端计算参数传递给小程序的方式来实现上传

后端使用

const MpUploadOssHelper = require('mp-upload-oss-helper');
const mpHelper = new MpUploadOssHelper({
    accessKeyId: CONFIG.OSS_MP_UPLOAD.AccessKeyId,
    accessKeySecret: CONFIG.OSS_MP_UPLOAD.AccessKeySecret,
    timeout: 1,     // 限制参数的有效时间(单位: 小时)
    maxSize: 10     // 限制上传文件大小(单位: Mb)
});
// 生成的参数
const params = mpHelper.createUploadParams();

小程序使用

// 对接后台返回的 oss 参数
const params = {}; 
wx.uploadFile({
  url: OSS_UPLOAD_HOST,
  filePath: filePath,
  name: 'file',
  formData: {
    'key': params.key,
    'policy': params.policy,
    'OSSAccessKeyId': params.OSSAccessKeyId,
    'Signature': params.signature,
  },
  success: function (res) {
    resolve(OSS_UPLOAD_HOST + params.key);
  },
  fail: function (err) {
    reject(err);
  },
})