Socket sends HTTP protocol

I. SendingGetRequest

import java.net.*;import java.io.*;public class URLSender {    /**     * @param args */ public static void main(String[] args) throws IOException {        try {            Socket socket = new Socket("www.nwu.edu.cn", 80);            boolean autoflush = true;           PrintWriter out = new PrintWriter(socket.getOutputStream(), autoflush);            BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));            //send an HTTP request to the web server           out.println("GET / HTTP/1.1");            out.println("Host: nwu.edu.cn");            out.println("Connection: Close");            out.println();            //read the response                   boolean loop = true;           StringBuffer sb = new StringBuffer(8096);            while (loop) {               if (in.ready()) {                int i = 0;                while (i != -1) {                    i = in.read();                    sb.append((char) i);                }                loop = false;             }            //Thread.currentThread().sleep(50);            }            //display the response to the out console            System.out.println(sb.toString());          socket.close();       } catch (UnknownHostException e) {            System.err.println("Don't know about host: Victest.");             System.exit(1);        } catch (IOException e) {            System.err.println("Couldn't get I/O for " + "the connection to: Victest.");             System.exit(1);        }   }}

2. UseSocketSend a POST request

Try {
// Construct data
String data = urlencoder. encode ("key1", "UTF-8") + "=" + urlencoder. encode ("value1", "UTF-8 ");
Data + = "&" + urlencoder. encode ("key2", "UTF-8") + "=" + urlencoder. encode ("value2", "UTF-8 ");

// CreateSocketToHost
String hostname = "hostname.com ";
Int Port = 80;
Inetaddress ADDR = inetaddress. getbyname (hostname );
Socket Socket= NewSocket(ADDR, Port );

// Send Header
String Path = "/servlet/someservlet ";
Bufferedwriter wR = new bufferedwriter (New outputstreamwriter (Socket. Getoutputstream (), "utf8 "));
Wr. Write ("Post" + path +"HTTP/1.0/R/N ");
Wr. Write ("Content-Length:" + data. Length () + "/R/N ");
Wr. Write ("Content-Type: Application/X-WWW-form-urlencoded/R/N ");
Wr. Write ("/R/N ");

// Send data
Wr. Write (data );
Wr. Flush ();

//GetResponse
Bufferedreader RD = new bufferedreader (New inputstreamreader (Socket. Getinputstream ()));
String line;
While (line = RD. Readline ())! = NULL ){
// Process line...
}
Wr. Close ();
Rd. Close ();
} Catch (exception e ){
}