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

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
});

如果您正在使用ES6和Express,请尝试以下销毁方法:

const {id, since, fields, anotherField} = request.query;

在上下文中:

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

app.get('/', function(req, res){
   const {id, since, fields, anotherField} = req.query;
});

app.listen(3000);

也可以在析构函数中使用默认值:

//测试样品请求常量要求={查询:{id:'123',字段:[a','b','c']}}常量{身份证件,since=new Date().toString(),字段=['x'],anotherField='默认'}=请求查询;console.log(id,since,fields,anotherField)

我使用的是MEANJS 0.6.0express@4.16,很好

客户:

控制器:

var input = { keyword: vm.keyword };
ProductAPi.getOrder(input)

服务:

this.getOrder = function (input) {return $http.get('/api/order', { params: input });};

服务器

路线

app.route('/api/order').get(products.order);

控制器

exports.order = function (req, res) {
  var keyword = req.query.keyword
  ...

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);