将图片从URL抓取到S3
将图片从URL抓取到S3
提问于 2019-10-24 03:57:54
其目标是让AWS lambda每天将特定的jpg从URL复制到S3存储桶中。这看起来像是一个超级简单的lambda函数，但它就是不起作用。我将此设置作为本地NPM项目，然后在AWS lambda控制台中上传压缩文件。下面的代码运行时没有错误，但没有复制镜像。任何帮助都将不胜感激。
"use strict";
const AWS = require("aws-sdk");
const Jimp = require("jimp");
const s3 = new AWS.S3();
const imageType = "image/jpeg";
const bucket = 'mybucket';
exports.handler = (event, context, callback) => {
let objectKey = 'myimage.jpg';
Jimp.read('sampleURL.com/image.jpg')
.then(image => {
s3.putObject({
Bucket: bucket,
Key: objectKey,
Body: image,
ContentType: imageType
})
})
.catch(err => {
// Handle an exception.
});
};aws cloudwatch日志
2019-10-24T12:48:23.105Z bac7d80e-5544-4ea5-ae12-478281338389 INFO { Error: Could not find MIME for Buffer <null>
at Jimp.parseBitmap (/var/task/node_modules/@jimp/core/dist/utils/image-bitmap.js:120:15)
at Jimp.parseBitmap (/var/task/node_modules/@jimp/core/dist/index.js:506:32)
at /var/task/node_modules/@jimp/core/dist/index.js:448:15
at /var/task/node_modules/@jimp/core/dist/index.js:176:14
at /var/task/node_modules/@jimp/core/dist/request.js:66:9
at IncomingMessage.<anonymous> (/var/task/node_modules/phin/lib/phin.compiled.js:1:2100)
at IncomingMessage.emit (events.js:203:15)
at IncomingMessage.EventEmitter.emit (domain.js:448:20)
at endReadableNT (_stream_readable.js:1145:12)
at process._tickCallback (internal/process/next_tick.js:63:19) methodName: 'constructor' }
END RequestId: bac7d80e-5544-4ea5-ae12-478281338389
REPORT RequestId: bac7d80e-5544-4ea5-ae12-478281338389 Duration: 612.63 ms Billed Duration: 700 ms Memory Size: 128 MB Max Memory Used: 97 MB Init Duration: 557.69 ms Stack Overflow用户
发布于 2019-10-26 00:04:56
如果这对其他任何人都有帮助，则需要将图像写入缓冲区。下面这行代码修复了这个问题：
const buffer = await image.getBufferAsync(imageType);然后将缓冲区用于S3主体参数。所以完整的脚本是：
"use strict";
const AWS = require("aws-sdk");
const Jimp = require("jimp");
const s3 = new AWS.S3();
const imageType = "image/jpeg";
const bucket = 'bucketxzy';
exports.handler = async (event, context) => {
let objectKey = 'sampleimage.jpeg';
const image = await Jimp.read('https://www.sampleurl.com/sampleimage.jpg/');
const buffer = await image.getBufferAsync(imageType);
return s3.putObject({
Bucket: bucket,
Key: objectKey,
Body: buffer,
ContentType: imageType
}).promise();
};页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/58530146
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