AWS S3 图像 URL 显示破解图像

Question

请原谅我，如果我问得很愚蠢。我是 AWS 和无服务器框架的新手，但我的问题是相同的代码（用 Express js 编写，不使用任何无服务器逻辑，并且对于此代码，有一个单独的 ELASTIC BEANSTALK 后端）能够将图像上传到 AWS s3 并生成图像url 在浏览器中显示图像，但是使用无服务器框架配置的相同代码（有用于此的 LAMDA 功能）也能够将图像上传到 aws s3（对于两种情况存储桶相同），但这次结果图像 url 仅显示裂纹图像（我的意思是每当图像无法打开时，默认图像就是这样的）。在这两种情况下，我在上传到 s3 后得到一个图像 url，并且该 url 包含其他文本数据，我存储在我的 aws rds mysql db 中

**我的 serverless.Yaml 文件 **

service: serverlessbackend
frameworkVersion: "3"

provider:
  name: aws
  runtime: nodejs18.x
  region: ap-south-1
  timeout: 10
  environment:
    DB_HOST: "something.rds.amazonaws.com"
    DB_USER: "user"
    DB_PASSWORD: "something"
    DB_NAME: "something"
    AWS_ACCESSKEY: "something"
    AWS_SECRETKEY: "something"
    MY_AWS_REGION: "ap-south-1"


functions:
  myLambdaFunction:
    handler: index.handler
    events:
      - http: ANY /
      - http: "ANY {proxy+}"

plugins:
  - serverless-offline

index.js 文件

const serverless = require("serverless-http");
const express = require("express");
const app = express();
const mysql = require("mysql2");
app.use(express.json());
let pool = require("./db/index");

let categoryRoutes = require("./routes/categoryRoutes");


app.use("/category", categoryRoutes);



module.exports.handler = serverless(app);

** Categoryroutes.js 文件 **

const express = require("express");
const { pool } = require("../db");
const { deleteFromAws, uploadToAws } = require("../utils/aws");
const multer = require("multer");
const { uniqueString } = require("../utils/unique");

const router = express.Router();


const storage = multer.memoryStorage();

const upload = multer({
  storage: storage,
});


router.post("/", upload.single("image"), async (req, res) => {

  console.log(req.file);
  if (!req.file) {
    return res.status(400).json({ error: "No file uploaded" });
  }

  try {
  
    let result = await uploadToAws(req.file);
  
    let { Location: imgUrl, Key } = result;

    console.log(result);
  

    if (imgUrl && Key) {
      const query = "INSERT INTO temp SET ?";

      const data = {
        category: req.body.category,
        category_id: uniqueString(),
        image_path: imgUrl,
        image_name: Key,
      };
      // The "?" in the query is a placeholder for the data object

      pool.query(query, data, (err, result) => {
        if (err) {
          console.log(err);
          return res.status(400).json({ message: err.message });
        }
        // console.log(result);
        return res.status(200).json({ message: "File uploaded successfully" });
      });
    } else {
      throw new Error("something wrong");
    }
  } catch (err) {
    console.log(err.message);
    res.send(err.message);
  }
});

这里上传到aws文件：

const AWS = require("aws-sdk");
const { generateUniqueImageName } = require("./unique");

// Configure AWS credentials
AWS.config.update({
  accessKeyId: process.env.AWS_ACCESSKEY,
  secretAccessKey: process.env.AWS_SECRETKEY,
  region: process.env.MY_AWS_REGION, // e.g., 'us-east-1'
});

// Create a new instance of the S3 service

const uploadToAws = async (file) => {
  // console.log(file);
  
  const s3 = new AWS.S3();

  const params = {
    Bucket: "something",
    Key: `uploads/IMG-${generateUniqueImageName(file.originalname)}`, // The file name to be used in the S3 bucket
    ContentType: file.mimetype,
    Body: file.buffer, // The file content as a buffer
  };

  return await s3.upload(params).promise();
};

我已经检查了我的访问密钥和秘密密钥，一切正常。