我们可以在Node.js中获取查询字符串中的变量吗,就像在PHP中获取$_get中的变量一样?

我知道在Node.js中,我们可以获取请求中的URL。是否有获取查询字符串参数的方法?


当前回答

你应该可以这样做:

var http = require('http');
var url  = require('url');

http.createServer(function(req,res){
    var url_parts = url.parse(req.url, true);
    var query = url_parts.query;

    console.log(query); //{Object}

    res.end("End")
})

其他回答

可以使用url.parse使用url模块收集参数

var url = require('url');
var url_data = url.parse(request.url, true);
var query = url_data.query;

在expressjs中,

var id = req.query.id;

Eg:

var express = require('express');
var app = express();

app.get('/login', function (req, res, next) {
    console.log(req.query);
    console.log(req.query.id); //Give parameter id
});

白夸克反应很好。但在Node.js和Express.js的当前版本中,它还需要一行代码。确保添加“require-http”(第二行)。我在这里发布了一个更完整的示例,展示了此呼叫的工作原理。运行后,键入http://localhost:8080/?name=abel&fruit=apple在浏览器中,您将根据代码得到一个很酷的响应。

var express = require('express');
var http = require('http');
var app = express();

app.configure(function(){
    app.set('port', 8080);
});

app.get('/', function(req, res){
  res.writeHead(200, {'content-type': 'text/plain'});
  res.write('name: ' + req.query.name + '\n');
  res.write('fruit: ' + req.query.fruit + '\n');
  res.write('query: ' + req.query + '\n');
  queryStuff = JSON.stringify(req.query);
  res.end('That\'s all folks'  + '\n' + queryStuff);
});

http.createServer(app).listen(app.get('port'), function(){
    console.log("Express server listening on port " + app.get('port'));
})

既然您在标签中提到了Express.js,这里有一个Express特有的答案:使用req.query。

var express = require('express');
var app = express();

app.get('/', function(req, res){
  res.send('id: ' + req.query.id);
});

app.listen(3000);

像我一样

npm  query-string
import queryString from "query-string";

export interface QueryUrl {
  limit?: number;
  range?: string;
  page?: number;
  filed?: string;
  embody?: string;
  q?: string | object;
  order?: number;
  sort?: string;

}

 let parseUri: QueryUrl = queryString.parse(uri.query);

如果您需要向IP和域发送GET请求(其他答案没有提到您可以指定端口变量),您可以使用此函数:

function getCode(host, port, path, queryString) {
    console.log("(" + host + ":" + port + path + ")" + "Running httpHelper.getCode()")

    // Construct url and query string
    const requestUrl = url.parse(url.format({
        protocol: 'http',
        hostname: host,
        pathname: path,
        port: port,
        query: queryString
    }));

    console.log("(" + host + path + ")" + "Sending GET request")
    // Send request
    console.log(url.format(requestUrl))
    http.get(url.format(requestUrl), (resp) => {
        let data = '';

        // A chunk of data has been received.
        resp.on('data', (chunk) => {
            console.log("GET chunk: " + chunk);
            data += chunk;
        });

        // The whole response has been received. Print out the result.
        resp.on('end', () => {
            console.log("GET end of response: " + data);
        });

    }).on("error", (err) => {
        console.log("GET Error: " + err);
    });
}

不要错过文件顶部的所需模块:

http = require("http");
url = require('url')

还要记住,您可以使用https模块通过安全域和ssl进行通信。因此这两条线将改变:

https = require("https");
...
https.get(url.format(requestUrl), (resp) => { ......