java 下载远程图片

package test;import java.io.File;import java.net.URL;import org.apache.commons.io.FileUtils;public class UploadImg {/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stubString url="http://www.baidu.com/img/baidu_sylogo1.gif";downloadFromUrl(url,"D:/aa/");System.out.println("ok");}/** * 文件下载的方法 * @param String url * @param String dir * @return String fileName */public static String downloadFromUrl(String url, String dir) {String fileName="";try {URL httpurl = new URL(url);//fileName = getFileNameFromUrl(url);String[] us=url.split("/");fileName=us[us.length-1];System.out.println("fileName:"+fileName);File f = new File(dir + fileName);FileUtils.copyURLToFile(httpurl, f);} catch (Exception e) {e.printStackTrace();return "Fault!";}return fileName;}}