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test/server/controllers/Img.js

33 lines
960 B

const fs = require('fs');
const path = require('path');
const readFilePromise = (path) => {
return new Promise((resolve, reject) => {
fs.readFile(path, (err, data) => {
if (err) {
reject(err)
} else {
resolve(data)
}
})
})
};
//显示图片
exports.photo = async (req, res) => {
try {
let img = req.params[0];
let imgPath = path.join(__dirname, '../../', `/server/public/upload/imgs/${img}`);
let content = await readFilePromise(imgPath, "binary");
res.setHeader('Content-Type', 'image/png');
res.end(new Buffer(content, 'binary'));
} catch (e) {
let imgPath = path.join(__dirname, '../../', '/server/public/upload/imgs/404/404.png');
let content = await readFilePromise(imgPath, "binary");
res.setHeader('Content-Type', 'image/png');
res.end(new Buffer(content, 'binary'));
}
};