正文
learning express step(十四)
提示：扫一扫查出行【扫一扫了解最新限行尾号】
复制提示
learning express error handle
code:
const express = require('express');
const app = express();
const fs = require('fs');app.get('/', function (req, res, next){
fs.readFile('file', function (err, data) {
if(err){
next(err)
}else{
res.send(data);
}
});
});app.listen();
result:
