用Java代码download网页

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只要能访问的网页，都能download。网页的JavaScript 不能阻止。

import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.io.OutputStreamWriter;import java.io.PrintWriter;import java.net.Socket;import java.net.UnknownHostException;public class Test {public static void main(String[] args) {try {Socket s = new Socket("www.qq.com", 80);PrintWriter pw = new PrintWriter(new OutputStreamWriter(s.getOutputStream()));pw.println("GET / HTTP/1.1");pw.println("Host:www.qq.com");pw.println("content-Type:text/html");pw.println();pw.flush();BufferedReader br = new BufferedReader(new InputStreamReader(s.getInputStream()));String str = "";while ((str = br.readLine()) != null) {System.out.println(str);}br.close();pw.close();s.close();} catch (UnknownHostException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}}

假设要访问的网站为http://www.baidu.com/example.jsp。

在Socket s = new Socket("www.qq.com", 80);和pw.println("Host:www.qq.com");中，将www.qq.com改为www.baidu.com。再在pw.println("GET/ HTTP/1.1");中的第一个斜杠后面添加example.jsp。