Node.js solves the problem of Chinese garbled characters in client request data

Node.js solves the problem of Chinese garbled characters in client request data

Example code:

var http = require('http');
var server = http.createServer();
server.on('request',function(req,res){
    // res.end("hello world");
    res.end("Hello World");
});
server.listen(3000,function(){
    console.log("Server is running");
});

reason:

The data sent by default on the server is actually UFT8 encoded content

But the browser does not know that you are UFT8 encoded content

If the browser does not know the encoding of the server's response content, it will execute it according to the default encoding of the current operating system.

The default setting for Chinese operating systems is GBK

Solution: The correct way is to tell the browser what type of data I am sending you res.setHeader('Content-Type','text/plain;charset=utf-8'); , be careful not to make a mistake in the connector, and don't write utf-8 randomly. In the http protocol, content-Type is used to tell the other party what type of data I am sending to you, and then the type is written immediately afterwards.

var http = require('http');
var server = http.createServer();
server.on('request',function(req,res){
    // res.end("hello world");
    res.setHeader('Content-Type','text/plain;charset=utf-8');
    res.end("Hello World");
});
server.listen(3000,function(){
    console.log("Server is running");
});

Note that there are many types

Response content type Content-Type

var http = require('http');
var server = http.createServer();
server.on('request',function(req,res){
    if(req.url==='/plain'){
        res.setHeader('Content-Type','text/plain;charset=utf-8');
        res.end("Hello World");
    }else if(req.url==='/html'){
        res.setHeader('Content-Type','text/html;charset=utf-8');
        res.end("<h1>Hello World<br/> hello world</h1>");
    }
   
});
server.listen(3000,function(){
    console.log("Server is running");
});

Return different types of Content-Type formats according to different request paths

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