JAVA应用程序中怎么样通过一个URL来获取所对应的HTML文件

Question

希望能给出代码!!多谢!

Answer 1

 URL url=new URL(tagetURL);
 InputStream is=url.openStream();或socket方式
  以类似的方式构造出HTTP  header----------------------------------------------------------------
  String header = "GET " + httpreq + " HTTP/1.1\r\n";
        header += "Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-powerpoint, application/vnd.ms-excel, application/msword, application/x-shockwave-flash, application/x-icq, */*\r\n";
        header += "Accept-Language: zh-cn\r\n";
        header += "Accept-Encoding: gzip, deflate\r\n";
        header += "User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; Maxthon; .NET CLR 1.0.3705)\r\n";
        header += "Host: " + host + "\r\n";
        header += "Connection: Keep-Alive\r\n";
--------------------------------------------------------------------------------然后：        InetAddress addr = InetAddress.getByName(host);
        Socket socket = new Socket(addr);
        InputStream is = socket.getInputStream();
        OutputStream os = socket.getOutputStream();
        os.write(sb.toString().getBytes());
        os.flush();

Answer 2

import java.net.*;
import java.io.*;public class URLReader {
    public static void main(String[] args) throws Exception {
URL yahoo = new URL("http://www.yahoo.com/");
BufferedReader in = new BufferedReader(
new InputStreamReader(
yahoo.openStream())); String inputLine; while ((inputLine = in.readLine()) != null)
    System.out.println(inputLine); in.close();
    }
}

Answer 3

直接使用Apache的http-client common就是了

Answer 4

import java.net.*;
import java.io.*;public class URLReader {
    public static void main(String[] args) throws Exception {
if (args.length == 0) {
System.out.println("usage: java URLReader <a URL>");
System.exit(0);
} URL yahoo = new URL(args[0]);
BufferedReader in = new BufferedReader(
new InputStreamReader(
yahoo.openStream())); String inputLine; while ((inputLine = in.readLine()) != null)
System.out.println(inputLine); in.close();
    }
}