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Examples to explain how to use the http module and url module in node
- 藏色散人forward
- 2022-08-08 16:05:041804browse
1. http module
const http = require('http')
http.createServer(function(req,res) {
console.log(req.url) //获取url里面携带的参数
res.writeHead(200,{'Content-type':"text/html;charset='utf-8'"}) //设置响应头
res.write("<head><meta charset='UTF-8'></head>") //设置编码，不设置的话就会出现中文乱码
res.write('this is node js中国加油') //给页面响应信息
res.end() //响应结束}).listen(8081) //端口号
<span style="font-size: 18px">当我把url改为http://127.0.0.1:8081/aaa时候<br>console.log(req.url)输出的内容</span>
## [Related recommendations: node.js video tutorial】
The most critical thing is the req.url attribute, which represents the user’s request URL address. All routing designs are implemented through req.url. What we are more concerned about is not getting the URL, but identifying the URL.
To identify the URL, the following url module is used
2. url module
##url .parse() Parse URLconst url = require('url')var api = 'http://www.baidu.com?name=zhangsan&age=18'console.log(url.parse(api))
## When url.parse When the second parameter is true, look at the printed result
console.log(url.parse(api,true))
At this time the parameter is output in the format of an object
All we can get the parameters passed in the url through this method
const url = require('url')var api = 'http://www.baidu.com?name=zhangsan&age=18'// console.log(url.parse(api,true))let urlObj = url.parse(api,true).query
console.log(urlObj)
Now we Let’s see how to get the parameters in the url when making a request
Based on the previous code, let’s see what parameters this req has
const http = require('http')
http.createServer(function(req,res) {
console.log(req.url) //获取url里面携带的参数
res.writeHead(200,{'Content-type':"text/html;charset='utf-8'"}) //设置响应头 console.log(req)
res.end() //响应结束}).listen(8081) //端口号
The printed req found that it had a lot of information. We searched for the url and found that it had two
The last one is to request the browser icon. To get the parameters in the url, you need to exclude the last request
const url = require('url')
const http = require('http')
http.createServer(function(req,res) {
console.log(req.url) //获取url里面携带的参数 /?name=zhangsan&age=19
res.writeHead(200,{'Content-type':"text/html;charset='utf-8'"}) //设置响应头
// console.log(req)
if(req.url !== '/favicon.ico'){ var userinfo = url.parse(req.url,true).query
console.log(userinfo) //{ name: 'zhangsan', age: '19' }
console.log('姓名:'+userinfo.name, '年龄:'+ userinfo.age )
}
res.end() //响应结束}).listen(8081) //端口号
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