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const express = require('express'); | |
const fetch = require('node-fetch'); | |
const sharp = require('sharp'); | |
const app = express(); | |
app.get('/resize', async (req, res) => { | |
const imageUrl = req.query.q; | |
if (!imageUrl) { | |
console.error('没有提供图像 URL'); | |
return res.status(400).send('没有提供图像 URL'); | |
} | |
try { | |
const response = await fetch(imageUrl); | |
if (!response.ok) { | |
throw new Error(`获取图像失败: ${response.statusText}`); | |
} | |
const imageBuffer = await response.buffer(); | |
console.log('原始图像大小:', imageBuffer.byteLength); | |
// 使用 sharp 库来调整图像大小 | |
const resizedImageBuffer = await sharp(imageBuffer).resize(100).toBuffer(); | |
console.log('压缩后的图像大小:', resizedImageBuffer.byteLength); | |
// 将压缩后的图像转换为 Base64 编码的数据 | |
const base64Image = resizedImageBuffer.toString('base64'); | |
res.setHeader('Content-Type', 'text/plain'); | |
res.setHeader('Access-Control-Allow-Origin', '*'); | |
res.setHeader('Access-Control-Allow-Methods', 'GET, POST, OPTIONS'); | |
res.setHeader('Access-Control-Allow-Headers', 'Content-Type'); | |
res.setHeader('Access-Control-Max-Age', '86400'); | |
res.send(base64Image); | |
} catch (error) { | |
console.error('压缩图像时出错:', error); | |
res.status(500).send('压缩图像时出错'); | |
} | |
}); | |
const PORT = process.env.PORT || 7860; | |
app.listen(PORT, () => { | |
console.log(`Server is running on port ${PORT}`); | |
}); | |