Java-HttpServer

Create Server

HttpServer server = new HttpServer(80);

HttpServer server = new HttpServer(new InetSocketAddress(80), 0);

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Set Executor

• Single Thread

server.setExecutor(Executors.newSingleThreadExecutor());

• Fixed Threads

server.setExecutor(Executors.newFixedThreadPool(10));

• Multi Threads

This is the default executor.

server.setExecutor(Executors.newCachedThreadPool());

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Set Handler

• Handle GET requests

server.get("/home", (req, res) -> {

});

• Handle POST requests

server.post("/home", (req, res) -> {

});

• Handle any method

server.handle("*", "/home", (req, res) -> {

});

• Alternative

server.addHandler("/home", (req, res) -> {

});

---

Request

Headers

req.getRequestHeader("Connection");

URI

req.getRequestURI();

Method

req.getRequestMethod();

Remote Address

req.getRemoteAddress();

Cookies

Cookie[] cookies = req.getCookies();

Cookie cookie = req.getCookie("name");

Params

String param = req.getParam("name");

Body

String body = req.getRequestBody();

byte[] body = req.getRequestBodyBytes();

---

Response

Head

res.status(200)

res.writeHead(200, (head) -> {
    head.setHeader("Content-Type", "text/plain");
});

Body

res.send("Hello World!");

Or with status code

res.send(200, "Hello World!");

You can also use write. This will not end the response and you can send bytes

res.write("Hello World!");

End

Using send will already end the response.

res.end();

---

Start

server.start(); 

Or

server.start(()->{
    System.out.println("Server started!");
});