Question

以下是我的代码：

const http = require('http');
var server1 = http.createServer(function(req, res) {
    res.writeHead(200, {'Content-Type': 'text/plain'});
    res.write('request successfully proxied!' + '\n' + JSON.stringify(req.headers, true, 2) + '\n' + req.url);
    res.end();
    throw new Error("Error!!!");
});
server1.on("error", err=>console.log(err));
server1.listen(5060);

为什么server1.on（“error”，...）不处理回调引发的异常并且进程停止了？如果通过监听“错误”事件无法处理此类异常，我怎么能处理这样的异常，以便http服务器从那时起仍能正常运行？

Answer 1

使用emit代替throw：

const http = require('http');
var server1 = http.createServer(function(req, res) {
    res.writeHead(200, {'Content-Type': 'text/plain'});
    res.write('request successfully proxied!' + '\n' + JSON.stringify(req.headers, true, 2) + '\n' + req.url);
    res.end();
    // throw new Error("Error!!!");
    this.emit('error', new Error("Error!!!"));
});
server1.on("error", err=>console.log(err));
server1.listen(5060);

node js http服务器错误处理

1 个答案: