|
| |
| 19. 13. 5. 使用SocketChannel取网页 |
|
|
|
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.net.URL;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import java.nio.channels.SocketChannel;
public class MainClass {
public static void main(String[] args) throws IOException {
URL u = new URL("http://www.java2java.com");
String host = u.getHost();
int port = 80;
String file = "/";
SocketAddress remote = new InetSocketAddress(host, port);
SocketChannel channel = SocketChannel.open(remote);
FileOutputStream out = new FileOutputStream("yourfile.htm");
FileChannel localFile = out.getChannel();
String request = "GET " + file + " HTTP/1.1\r\n" + "User-Agent: HTTPGrab\r\n"
+ "Accept: text/*\r\n" + "Connection: close\r\n" + "Host: " + host + "\r\n" + "\r\n";
ByteBuffer header = ByteBuffer.wrap(request.getBytes("US-ASCII"));
channel.write(header);
ByteBuffer buffer = ByteBuffer.allocate(8192);
while (channel.read(buffer) != -1) {
buffer.flip();
localFile.write(buffer);
buffer.clear();
}
localFile.close();
channel.close();
}
}
|
|
|