Web App for node. JS GET, POST

a simple HTTP server, route processing, Get and Post, Get instance, Post Instance

1. Simple HTTP Server

　　

Create an HTTP server, get and output the request URL, method, header, and make different output according to the requested resource.

　　　　

　　　

Console command: Node app.js

　　

Browser input: 127.0.0.1:8080 returns 404, output can not find source

　　　　　　　　

　　　　　　　　

　　　　　　　　127.0.0.1:8080/index

　　　　　　　　

　　　　　　　　

　　　　　　　　127.0.0.1:8080/img

　　　　　　　　

　　　　　　　　

　　　　　　　　

2. Route handling

3. Get Instances

The HTTP client send to get request parameter data in node. js is stored in the URL property of the Request object.

such as: http://127.0.0.1:8080/login?name=zhang&pwd=123

Where the URL path is named login

Use the GET method to expose data name=zhang&pwd=123 to the address bar.

The parse method in the node. JS Native URL module Gets the get parameters for HTTP.

Url.parse (Req.url). Pathname.

The code obtains the request path in the URL based on the Req object, such as login,

Req.url to login?name=zhang&pwd=123

var str=url.parse (req.url). Query

Get name=zhang&pwd=123

　　

var param = querystring.parse ('name=zhang&pwd=123')

Get the JSON object {name: ' Zhang ', pwd: ' 123 '}

Get name and PWD can use Param.name or param[' name ']

　　

Example: Use the HTTP module to create a server that receives arbitrary URL requests and passes parameters using the Get method.

The server receives a client request URL, outputs a path name for each request, and a JSON object that requests parameters.

　　

　　

　　

4. Post instance

　　

　　

Http://127.0.0.1:8080/add

　　

　　

　　

Web App for node. JS GET, POST