https Java客戶端

package com.wtf.demo.socket;

import javax.net.ssl.SSLSocket;
import javax.net.ssl.SSLSocketFactory;
import java.io.*;

/**
 * Created by wtf on 2015/12/28.
 */
public class HTTPSClient {

    public static void main(String[] args) {
        int port = 443;
        String host = "sp0.baidu.com";

        SSLSocketFactory factory = (SSLSocketFactory) SSLSocketFactory.getDefault();
        SSLSocket socket  = null;
        try {
            socket = (SSLSocket)factory.createSocket(host,port);

            //啓用密碼組
            String[] supportedCipherSuites = socket.getSupportedCipherSuites();
            socket.setEnabledCipherSuites(supportedCipherSuites);

            Writer out = new OutputStreamWriter(socket.getOutputStream(),"UTF-8");

            //https在get中須要徹底的URL
            out.write("GET https://" + host + "/ HTTP/1.1\r\n");
            out.write("Host:" + host + "\r\n");
            out.write("\r\n");
            out.flush();


            //讀取相應

            BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));

            //讀取首部
            String s;
            while(!(s=reader.readLine()).equals("")){
                System.out.println(s);
            }
            System.out.println();

            //讀取長度
            String contentLength = reader.readLine();
            int length = Integer.MAX_VALUE;
            try{
                length = Integer.parseInt(contentLength.trim(),16);
            }catch (NumberFormatException e){
               // e.printStackTrace();
                //這個服務器在響應題的第一行沒有發送content-length
            }

            int c ;
            int i =0 ;

            while ((c= reader.read())!=-1 && i++ <length){
                System.out.write(c);
            }

            System.out.println();

        } catch (IOException e) {
            e.printStackTrace();
        }finally {
            try{
                if(socket!=null){
                  socket.close();
                }
            }catch (Exception e){
                e.printStackTrace();
            }
        }
    }

}