Question

您好我正在制作这个接收POST请求的小型本地服务器，并返回所有大写的请求。它还会保存请求的本地副本以进行测试。我认为这行代码不是问题的根源，因为我尝试删除它并且问题仍然存在。问题是，当我尝试测试它时，它总是使用“错误：写完后”崩溃服务器。任何人都可以帮助为什么会这样吗？谢谢！

var map = require('through2-map');
var http = require('http');
var fs = require('fs');

var server = http.createServer(function (req, res) {

    if (req.method !== 'POST') {
        return res.end('Please send POST\n');
    }
    else {
        req.pipe(fs.createWriteStream('post.txt'));
        req.pipe(map(function (currValue) {
            return currValue.toString().toUpperCase()
        })).pipe(res);
        res.end();
    }       
})

server.listen(8000);

这是完整的错误：

events.js:160
      throw er; // Unhandled 'error' event
      ^

Error: write after end
    at ServerResponse.OutgoingMessage.write (_http_outgoing.js:441:15)
    at Through2.ondata (C:\Users\ger\Documents\Javascript\nodeJS\node_modules\readable-stream\lib\_stream_readable.js:619:20)
    at emitOne (events.js:96:13)
    at Through2.emit (events.js:188:7)
    at addChunk (C:\Users\ger\Documents\Javascript\nodeJS\node_modules\readable-stream\lib\_stream_readable.js:291:12)
    at readableAddChunk (C:\Users\ger\Documents\Javascript\nodeJS\node_modules\readable-stream\lib\_stream_readable.js:278:11)
    at Through2.Readable.push (C:\Users\ger\Documents\Javascript\nodeJS\node_modules\readable-stream\lib\_stream_readable.js:245:10)
    at Through2.Transform.push (C:\Users\ger\Documents\Javascript\nodeJS\node_modules\readable-stream\lib\_stream_transform.js:148:32)
    at Through2._transform (C:\Users\ger\Documents\Javascript\nodeJS\node_modules\through2-map\index.js:20:12)
    at Through2.Transform._read (C:\Users\ger\Documents\Javascript\nodeJS\node_modules\readable-stream\lib\_stream_transform.js:184:10)

Answer 1

您将在完成之前结束响应。删除res.end()。

使用nodejs在服务器中“写完后”错误

1 个答案: