Java 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.getContentLength();

/**代码未完, 请加载全部代码(NowJava.com).**/