SubOptimal/HttpClient11.java

## README.md

      
    Raw
  

              README.md
            
          
    A simple demo for the usage of Java 11 HttpClient.
server

Start the simple Python HTTP server.
$ ./dummy-http-server.py

It listen on http://localhost:8080 and respond to a GET with a permanent redirect HTTP 308 to http://example.com.
client

To compile and run the Java client you need Java >= 11
compile:
$ javac HttpClient11.java

execute:
$ java HttpClient11

response:
<!doctype html>
<html>
<head>
    <title>Example Domain</title>
...

curl

Using curl instead of the Java client.
$ curl -L http://localhost:8080

response is the same as above with the Java client

  
## dummy-http-server.py
#!/usr/bin/env python

import sys

if sys.version_info.major == 2:
	# Python 2.x
	from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer
elif sys.version_info.major == 3:
	# Python 3.x
	from http.server import BaseHTTPRequestHandler,HTTPServer
else:
	print('ERROR: don\'t know how to handle your python version\n' + sys.version)
	sys.exit(1)

class Handler(BaseHTTPRequestHandler):

    def do_GET(self):
        self.send_response(308)
        self.send_header('Location', 'http://example.com')
        self.end_headers()
        self.wfile.write("<html><body><h1>Hello Duke.</h1></body></html>")

def run(server=HTTPServer, handler=Handler, port=8080):
    address = ('', port)
    httpd = server(address, handler)
    print('Starting server on: ' + str(port))
    httpd.serve_forever()

if __name__ == "__main__":
    run()

## HttpClient11.java
/**
  demo of Java 11 HttpClient
*/
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpClient.Redirect;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.net.http.HttpResponse.BodyHandlers;

class HttpClient11 {
    public static void main(String[] args) throws Exception {
        HttpClient client = HttpClient.newBuilder()
            .followRedirects(Redirect.ALWAYS)
            .build();

        HttpRequest request = HttpRequest.newBuilder()
            .uri(URI.create("http://localhost:8080"))
            .build();

        client.sendAsync(request, BodyHandlers.ofString())
            .thenApply(HttpResponse::body)
            .thenAccept(System.out::println)
            .join();
    }
}
	#!/usr/bin/env python

	import sys

	if sys.version_info.major == 2:
	# Python 2.x
	from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer
	elif sys.version_info.major == 3:
	# Python 3.x
	from http.server import BaseHTTPRequestHandler,HTTPServer
	else:
	print('ERROR: don\'t know how to handle your python version\n' + sys.version)
	sys.exit(1)

	class Handler(BaseHTTPRequestHandler):

	def do_GET(self):
	self.send_response(308)
	self.send_header('Location', 'http://example.com')
	self.end_headers()
	self.wfile.write("<html><body><h1>Hello Duke.</h1></body></html>")

	def run(server=HTTPServer, handler=Handler, port=8080):
	address = ('', port)
	httpd = server(address, handler)
	print('Starting server on: ' + str(port))
	httpd.serve_forever()

	if __name__ == "__main__":
	run()
	/**
	demo of Java 11 HttpClient
	*/
	import java.net.URI;
	import java.net.http.HttpClient;
	import java.net.http.HttpClient.Redirect;
	import java.net.http.HttpRequest;
	import java.net.http.HttpResponse;
	import java.net.http.HttpResponse.BodyHandlers;

	class HttpClient11 {
	public static void main(String[] args) throws Exception {
	HttpClient client = HttpClient.newBuilder()
	.followRedirects(Redirect.ALWAYS)
	.build();

	HttpRequest request = HttpRequest.newBuilder()
	.uri(URI.create("http://localhost:8080"))
	.build();

	client.sendAsync(request, BodyHandlers.ofString())
	.thenApply(HttpResponse::body)
	.thenAccept(System.out::println)
	.join();
	}
	}