const express = require('express');
const sharp = require('sharp');
const app = express();
const port = 3000;
 
app.get('/thumbnail/:filename', async (req, res) => {
    const filename = req.params.filename;
    const imagePath = `/path/to/images/${filename}`;
    sharp(imagePath)
        .resize(100, 100) // 设置缩略图尺寸
        .toBuffer()
        .then(data => {
            res.type('jpeg'); // 根据需要设置正确的MIME类型
            res.send(data);
        })
        .catch(err => {
            console.error(err);
            res.status(500).send('Error generating thumbnail');
        });
});
 
app.listen(port, () => {
    console.log(`Thumbnail server running at http://localhost:${port}`);
});

location /thumbnail/ {
    proxy_pass http://localhost:3000/; # Node.js应用地址
    proxy_set_header Host $host; # 传递主机头信息到后端服务器
    proxy_set_header X-Real-IP $remote_addr; # 传递客户端IP地址到后端服务器
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; # 传递X
}