Java Socket Response HTTProtocol
我們可以寫一小串程式，並且於瀏覽器上瀏覽lcoalhost:8080的網址，基本上就會看到Hello World!
public class HttpSocketServer extends Thread{
private static Logger logger = Logger.getLogger(HttpSocketServer.class);
private static final int SERVER_PORT = 8080;
private ServerSocket serverSocket;
private boolean isRunning = true;
public HttpSocketServer() {
logger.info("初始化Server中...");
try {
serverSocket = new ServerSocket(SERVER_PORT);
} catch (Exception e) {
logger.error("Server初始化失敗...", e);
}
}
public void startServer() {
logger.info("Server已經啟動...");
while (isRunning) {
try {
Socket clientSocket = serverSocket.accept();
logger.info("取得連線，InetAddress = " + clientSocket.getInetAddress());
String response = "<html><head></head><body><h1>Hello World!</h1></body></html>";
String today = new Date().toString();
PrintWriter out = new PrintWriter(clientSocket.getOutputStream());
out.print("HTTP/1.1 200 \r\n"); // 版本 HTTP/1.1 ; 狀態 200
out.print("Content-Type: text/html; charset=UTF-8\r\n"); //這應該不用解釋惹
out.print("Content-length: " + response.length() + "\r\n"); //這部分對於HTTP 1.1非常重要，若沒有回傳正確長度，網頁87%會出問題
out.print("Status: 200\r\n");
out.print("Date: " + today + "\r\n");
out.print("\r\n"); // 結束協定
out.print(response); //通常結束協定後面都會接上我們的資料。
out.flush(); //更新數據
} catch (Exception e) {
logger.error("Socket連線有問題...", e);
}
}
}
@Override
public void run() {
startServer();
}
public static void main(String args[]) {
(new HttpSocketServer()).start();
}
}
結果
這邊我們可以先看看瀏覽器送甚麼Request給我們，這是最基本的Header請求，在Request上面就是我們Response的東西。