判断远程资源是否可访问-JSP教程,Java技巧及代码

import java.net.*;
import java.io.*;
public class test
{
    public static void main(string[] args){
        url url = null;
        urlconnection urlcon;
        inputstream instream;//你只需判断这个变量值 .
        try{
            url = new url("http","www13.kaxiu.com",80,"modules/959908432/hua_cs.html");
            urlcon = url.openconnection();
            instream = urlcon.getinputstream();
        }
        catch(malformedurlexception e){}
        catch(java.io.ioexception e2){}
        string urlfilename = url.getfile();
    }
}