以下实例演示了如何获取远程文件的大小:
Main.java 文件
import java.net.URL;import java.net.URLConnection; public class Main { public static void main(String[] args) throws Exception { int size; URL url = new URL("http://www.zhishitu.com/wp-content/themes/runoob/assets/img/newlogo.png"); URLConnection conn = url.openConnection(); size = conn.getContentLength(); if (size < 0) System.out.println("无法获取文件大小。"); else System.out.println("文件大小为:" + size + " bytes"); conn.getInputStream().close(); }}
以上代码运行输出结果为:
文件大小为:4261 bytes