通过 java.net.Socket 类访问一个Web页面,并且返回结果
import java.io.*; import java.net.*;
public class FirstSocket { public static void main(String args[]) {
//判断参数是否为两个,正确的用法为 FirstSocket 网站 页面 if(args.length!=2) { System.out.println("Usage : FirstSocket host page\r\nExample:FirstSocket www.google.com /"); System.exit(0); } String strServer=args[0]; //取得第一个参数 String strPage = args[1]; //取得第二个参数
try { String hostname = strServer; int port = 80; InetAddress addr = InetAddress.getByName(hostname); Socket socket = new Socket(addr, port); //建立一个Socket
//发送命令 BufferedWriter wr = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream(), "UTF8")); wr.write("GET " + strPage + " HTTP/1.0\r\n"); wr.write("HOST:" + strServer + "\r\n"); wr.write("\r\n"); wr.flush();
//接收返回的结果 BufferedReader rd = new BufferedReader(new InputStreamReader(socket.getInputStream())); String line; while ((line = rd.readLine()) != null) { System.out.println(line); } wr.close(); rd.close(); } catch (Exception e) { System.out.println(e.toString()); } } } |