本文介绍了如何在快捷节点js中获取url参数的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在面对从我的网址获取tagid价值的问题。localhost:8888 / p?tagid = 1234
帮助我更正我的控制器代码。我不能得到tagid值。
我的代码如下: -
app.js
var express = require('express')
,http = require('http')
,path = require('path');
var app = express();
var controller = require('./ controller')({app:app});
//所有环境
app.configure(function(){
app.set('port',process.env.PORT || 8888);
app.use(express.json());
app.use(express.urlencoded());
app.use(express.methodOverride());
应用程序.use(app.router);
app.use(express.static(path.join(__ dirname,'public')));
app.set('view engine','jade') ;
app.set('views',__dirname +'/ views');
app.use(app.router);
app.get('/',function(req, res){
res.render('index');
});
});
http.createServer(app).listen(app.get('port'),function(){
console.log('Express server listening on port'+ app.get('port') );
});
控制器/ index.js: -
函数控制器(params)
{
var app = params.app;
// var query_string = request.query.query_string;
app.get('/ p?tagId = /',function(request,response){
// userId是url请求中的一个参数
response.writeHead 200); // return 200 HTTP OK status
response.end('你正在寻找tagId'+ request.route.query.tagId);
});
}
module.exports = controller;
routes / index.js
require('./ controllers');
/ *
* GET主页。
* /
exports.index = function(req,res){
res.render('index',{title:'Express'});
};
解决方案
Express 4.x
要获取URL参数的值,请使用
app.get('/ p /:tagId',function(req,res){
res .send(tagId设置为+ req.params.tagId);
});
// GET / p / 5
// tagId设置为5
如果要获取查询参数?tagId = 5
,请使用
app.get('/ p',function(req,res ){
res.send(tagId设置为+ req.query.tagId);
});
// GET / p?tagId = 5
// tagId设置为5
Express 3.x
网址参数
app.get('/ p /:tagId',function(req,res){
res.send(tagId is设置为+ req.param(tagId));
});
// GET / p / 5
// tagId设置为5
查询参数
app.get('/ p',function(req,res){
res.send(tagId设置为+ req.query(tagId));
});
// GET / p?tagId = 5
// tagId设置为5
I am facing issue on getting value of tagid from my url.localhost:8888/p?tagid=1234
help me out to correct my controller code. I am not able to get the tagid value.
My code is as follows:-
app.js
var express = require('express')
, http = require('http')
, path = require('path');
var app = express();
var controller = require('./controller')({app: app});
// all environments
app.configure(function() {
app.set('port', process.env.PORT || 8888);
app.use(express.json());
app.use(express.urlencoded());
app.use(express.methodOverride());
app.use(app.router);
app.use(express.static(path.join(__dirname, 'public')));
app.set('view engine', 'jade');
app.set('views', __dirname + '/views');
app.use(app.router);
app.get('/', function( req, res) {
res.render('index');
});
});
http.createServer(app).listen(app.get('port'), function(){
console.log('Express server listening on port ' + app.get('port'));
});
Controller/index.js:-
function controller(params)
{
var app = params.app;
//var query_string = request.query.query_string;
app.get('/p?tagId=/', function(request, response) {
// userId is a parameter in the url request
response.writeHead(200); // return 200 HTTP OK status
response.end('You are looking for tagId' + request.route.query.tagId);
});
}
module.exports = controller;
routes/index.js
require('./controllers');
/*
* GET home page.
*/
exports.index = function(req, res){
res.render('index', { title: 'Express' });
};
解决方案
Express 4.x
To get a URL parameter's value, use req.params
app.get('/p/:tagId', function(req, res) {
res.send("tagId is set to " + req.params.tagId);
});
// GET /p/5
// tagId is set to 5
If you want to get a query parameter ?tagId=5
, then use req.query
app.get('/p', function(req, res) {
res.send("tagId is set to " + req.query.tagId);
});
// GET /p?tagId=5
// tagId is set to 5
Express 3.x
URL parameter
app.get('/p/:tagId', function(req, res) {
res.send("tagId is set to " + req.param("tagId"));
});
// GET /p/5
// tagId is set to 5
Query parameter
app.get('/p', function(req, res) {
res.send("tagId is set to " + req.query("tagId"));
});
// GET /p?tagId=5
// tagId is set to 5
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