WebPageReader.java
package sdkongkong;
import java.net.URL;
import java.net.MalformedURLException;
import java.net.URLConnection;
import java.io.IOException;
import java.io.BufferedReader;
import java.io.InputStreamReader;
public class WebPageReader {
private static URLConnection connection;
private static void connect( String urlString ) {
try {
URL url = new URL(urlString);
connection = url.openConnection();
System.out.println(connection.getClass());
} catch (MalformedURLException e){
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
private static void readContents() {
BufferedReader in = null;
try {
in = new BufferedReader(
new InputStreamReader(
connection.getInputStream()));
String inputLine;
while (
(inputLine = in.readLine()) != null) {
System.out.println(inputLine);
}
} catch (IOException e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
if (args.length != 1) {
System.err.println("usage: java WebPageReader " + "<url>");
System.exit(0);
}
connect(args[0]);
readContents();
}
}
使用方法,java WebPageReader + url(http://www.sina.com)
