geturlapp.java

主要是对于JAVA的编程的基本语言 希望能够帮得上你。

package ForTest;

import java.io.BufferedReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;

public class GetURLApp {
	static BufferedReader br;
	static FileWriter fw;
	
	public static void main(String[] args) {
		
		System.out.print("输入URL：");
		try {
			String strURL=new BufferedReader(
					new InputStreamReader(System.in)).readLine();		
			if(strURL.equals("")){
				System.err.print("你没有输入URL.");
				return;
			}else{
				URL url=new URL(strURL);			
				br=new BufferedReader
					(new InputStreamReader(url.openStream()));
				String line;
				fw=new FileWriter("ForTest/welcome.htm");				
				while((line=br.readLine())!=null){
					System.out.println(line);					
					fw.write(line);
				}	
				br.close();
				fw.close();	
			}
		} catch (MalformedURLException e) {			
			System.err.print(e.getMessage());
		} catch (IOException e) {			
			System.err.print(e.getMessage());
		}
	}
}