AWS 无服务器功能未响应图像

我正在尝试让 AWS API Gateway 使用图像进行响应。我的无服务器 Lambda 代码如下

const express = require('express');
const serverless = require('serverless-http');
const bodyParser = require('body-parser');
const request = require('request');
const fetch = require('node-fetch')
var Jimp = require('jimp');
const app = express()
app.use(bodyParser.json())
app.use(bodyParser.urlencoded({ extended: true }))

app.get('/image/:id', async(req, res) => {
    const id = req.params.id;

    var imgUrl = 'https://developer.salesforce.com/forums/profilephoto/729F00000005O41/T';
    let options = {};

    const image = await Jimp.read(imgUrl);
    image.getBuffer(Jimp.MIME_JPEG, (err, buffer) => {
        res.set('content-type', 'image/jpeg');
        res.send(buffer.toString('base64'));
    });
});
// wrap express app instance with serverless http function
module.exports.handler = serverless(app)

无服务器.yml

provider:
  name: aws
  runtime: nodejs8.10
  stage: dev
  region: us-east-1
  memorySize: 512

custom:
  apigwBinary:
    types:           #list of mime-types
      - 'image/jpg'
      - 'image/jpeg'
      - 'image/png'
functions:
  avatarFunc:
    handler: index.handler
    events:
      - http:
          path: image/{id}
          method: get
          contentHandling: CONVERT_TO_BINARY

plugins:
  - serverless-offline
  - serverless-apigw-binary

The image that is coming back is a black box.

好的。我刚刚经历过这个并想分享解决方案。该问题与 Serverless 和 AWS 之间的不匹配有关。所以我们要把它们放在同一页面上。

首先->无服务器配置

const binaryMimeTypes = {binary: [
  'image/*',
  'image/jpeg',
  'image/png',
  'image/svg+xml',
]};

module.exports.server = sls(app, binaryMimeTypes) 

这将 Serverless 配置为将关联的 Mime 类型作为 Base64 提供服务。

第二-> AWS 配置

在 AWS API 中，选择网关，然后选择设置。向下滚动并添加以下二进制类型：

就是这样！现在应该可以了！