Question

我正在尝试将Ruby On Rails用作后端，并使用ReactOnRails和Shrine之类的宝石，此外，我使用软件包Uppy将图像上传到AWS S3

到目前为止，一切正常，直到我尝试通过Uppy上传映像为止，该映像应该通过后端传输AWS凭证，因此我不会从前端公开我的秘密密钥。

React Component的代码段

.use(AwsS3, {
  limit: 5,
  // serverUrl: 'https://uppy-companion.my-app.com/',
  strings: {
    preparingUpload: 'Preparing upload...'
  },
  getUploadParameters(file) {
    return fetch('/presign?filename=' + file.name, {
      method: 'post',
      // Send and receive JSON.
      headers: {
        accept: 'application/json',
        'content-type': 'application/json'
      },
      body: JSON.stringify({
        filename: file.name,
        contentType: file.type
      })
    }).then((response) => {
      // Parse the JSON response.
      return response.json()
    }).then((data) => {
      // Return an object in the correct shape.
      return {
        method: data.method,
        url: data.url,
        fields: data.fields
      }
    }).catch((error) => console.log(error))
  }
});

我的路线是

mount Shrine.presign_endpoint(:cache) => '/presign'

最后是我的shrine.rb文件

require 'shrine'

if Rails.env.production?
  require 'shrine/storage/s3'

  s3_options = {
    access_key_id: Rails.application.credentials.aws[:s3_access_key_id],
    secret_access_key: Rails.application.credentials.aws[:s3_secret_access_key],
    region: Rails.application.credentials.aws[:s3_region],
    bucket: Rails.application.credentials.aws[:s3_bucket]
  }

  Shrine.storages = {
    cache: Shrine::Storage::S3.new(prefix: 'cache', **s3_options),
    store: Shrine::Storage::S3.new(prefix: "store", **s3_options)
  }
else
  require 'shrine/storage/file_system'

  Shrine.storages = {
    cache: Shrine::Storage::FileSystem.new('public', prefix: 'uploads/cache'),
    store: Shrine::Storage::FileSystem.new('public', prefix: 'uploads')
  }
end

Shrine.plugin :activerecord
Shrine.plugin :backgrounding
Shrine.plugin :logging
Shrine.plugin :determine_mime_type
Shrine.plugin :cached_attachment_data
Shrine.plugin :restore_cached_data
#TODO: docs
Shrine.plugin :presign_endpoint if Rails.env.production?
Shrine.plugin :upload_endpoint if !Rails.env.production?

Shrine::Attacher.promote { |data| PromoteJob.perform_async(data) }
Shrine::Attacher.delete { |data| DeleteJob.perform_async(data) }

我的AWS S3 Cros配置

<?xml version="1.0" encoding="UTF-8"?>
<CORSConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
<CORSRule>
    <AllowedOrigin>*</AllowedOrigin>
    <AllowedMethod>GET</AllowedMethod>
    <AllowedMethod>PUT</AllowedMethod>
    <AllowedMethod>POST</AllowedMethod>
    <AllowedMethod>HEAD</AllowedMethod>
    <MaxAgeSeconds>3000</MaxAgeSeconds>
    <AllowedHeader>Authorization</AllowedHeader>
    <AllowedHeader>x-amz-date</AllowedHeader>
    <AllowedHeader>x-amz-content-sha256</AllowedHeader>
    <AllowedHeader>content-type</AllowedHeader>
</CORSRule>
<CORSRule>
    <AllowedOrigin>*</AllowedOrigin>
    <AllowedMethod>GET</AllowedMethod>
    <MaxAgeSeconds>3000</MaxAgeSeconds>
</CORSRule>
</CORSConfiguration>

当我通过uppy.js上传文件时，我只是想不通如何解决此问题。

Answer 1

神社的预设端点响应GET而不是POST的请求，因此您需要这样做

getUploadParameters(file) {
  return fetch('/presign?filename=' + file.name, {
    method: 'get',
    ...

顺便说一句，如果将前缀端点安装在/s3/params上：

Rails.application.routes.draw do
  mount Shrine.presign_endpoint(:cache) => "/s3/params"
end

您不需要任何fetch()逻辑，只需将Uppy指向您的应用，它将自动使用/s3/params并为您完成所有提取工作：

.use(AwsS3, {
  serverUrl: '/',
  ...
})

使用Uppy槽神社返回图像上传405方法不允许

1 个答案: