通过URL获取远程文件大小

//package com.nowjava;
//n o w    j a v a  . c o m 提 供

import java.net.HttpURLConnection;


import java.net.URL;


public class Main {

    public static void main(String[] argv) throws Exception {

        String url = "nowjava.com";

        System.out.println(getRemoteFileSize(url));

    }


    public static long getRemoteFileSize(String url) {

        long size = 0;

        try {

            HttpURLConnection conn = (HttpURLConnection) (new URL(url))

                    .openConnection();
                    /**
                     from
                    * n o w j a   v  a . c o m - 时  代  Java 
                    **/

            size = conn.getConten