为什么我不能在nodejs HTTP响应中写汉字? [英] Why can't I write Chinese characters in nodejs HTTP response?

问题描述

这是我的小代码:

var http = require('http');
var port = 9002;
var host_ip = '<my_ip>';
http.createServer(function (req, res) {
    var content = new Buffer("Hello 世界", "utf-8")
    console.log('request arrived');
    res.writeHead(200, {
        'Content-Encoding':'utf-8',
        'charset' : 'utf-8',
        'Content-Length': content.length,
        'Content-Type': 'text/plain'});
    res.end(content.toString('utf-8'),'utf-8');
}).listen(port, host_ip);
console.log('server running at http://' + host_ip + ':' + port);

以前，我只是让res.end发送"hello world"，并且效果很好.然后我想稍作调整，将世界"更改为中文等效的世界"，然后将标头中的字符集"，内容类型"更改为"utf-8".但是在Chrome和Firefox中，我看到了这一点:

Previously I just let res.end to send "hello world" and it worked well. Then I wanted to adjust a little bit and changed the 'world' into the Chinese equivalent '世界', and so changed the 'charset' 'content-type' in the header to 'utf-8'. But in Chrome and Firefox I see this:

hello 涓栫晫

但是，令人惊讶的是Opera(11.61)确实显示了正确的结果hello 世界.我想知道我是否错过了代码中的某些内容，以及为什么会发生这种情况.谢谢你们.

However, amazingly opera(11.61) does show the correct result hello 世界. I want to know whether I have missed something in the code, and why this is happening. Thank you guys.

我认为此帖子与我的情况类似，但不完全相同.

I think this post is similiar with my situation but not exactly.

推荐答案

问题在于字符集规范.对我来说，它适用于此更改:

Problem is with the character set specification. For me it works with this change:

'Content-Type': 'text/plain;charset=utf-8'

经过Chrome，Firefox和Safari的测试.

Tested with Chrome, Firefox and Safari.

您还可以查看node.js包"express"，该包允许这样重写代码:

You could also look into the node.js package "express" which allows rewriting your code like this:

var express=require('express');

var app=express.createServer();

app.get('/',function(req, res) {
    var content = "Hello 世界";

    res.charset = 'utf-8';
    res.contentType('text');
    res.send(content);
});

app.listen(9002);

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