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

2014年5月4日更新

此处保留旧答案:https://gist.github.com/stefek99/b10ed037d2a4a323d638


1) 安装express:npm安装express

应用程序.js

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

app.get('/endpoint', function(request, response) {
    var id = request.query.id;
    response.end("I have received the ID: " + id);
});

app.listen(3000);
console.log("node express app started at http://localhost:3000");

2) 运行app:node app.js

3) 在浏览器中访问:http://localhost:3000/endpoint?id=something

我收到了ID:某物


(自从我的回答以来,很多事情都发生了变化,我相信这是值得的,让事情保持最新)

其他回答

表达特定的简单获取方法

查询字符串(在?之后),例如https://...?user=abc&id=123var express=要求('express');var app=express();app.get('/',函数(req,res){res.send('id:'+req.query.id);});app.listen(3000);查询参数,如https://.../get/users/:idvar express=要求('express');var app=express();app.get('/get/users/:id',函数(req,res){res.send('id:'+req.params.id);});app.listen(3000);

考虑一下这个url->/api/endpoint/:id?名称=萨希尔这里id是param,其中as name是查询。您可以像这样在nodejs中获取此值

app.get('/api/endpoint/:id', (req, res) => {
  const name = req.query.name; // query
  const id = req.params.id //params
});

如果您想避免表达,请使用以下示例:

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

function func111(req, res) {
  res.writeHead(200, {'Content-Type': 'text/plain'});
  var q = url.parse(req.url, true);
  res.end("9999999>>> " + q.query['user_name']); 
}

http.createServer(func111).listen(3000); 

用法:

curl http://localhost:3000?user_name=user1

通过yl

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) => { ......

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);