import java.io.ByteArrayOutputStream;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.net.HttpURLConnection;import java.net.URL;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;@Controller@RequestMapping("/")public class ali {	/**      * 从网络Url中下载文件      * @param urlStr      * @param fileName      * @param savePath      * @throws IOException      */      public static void  downLoadFromUrl(String urlStr,String fileName,String savePath) throws IOException{          URL url = new URL(urlStr);            HttpURLConnection conn = (HttpURLConnection)url.openConnection();                    //设置超时间为3秒          conn.setConnectTimeout(3*1000);          //防止屏蔽程序抓取而返回403错误          conn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");            //得到输入流          InputStream inputStream = conn.getInputStream();            //获取自己数组          byte[] getData = readInputStream(inputStream);                //文件保存位置          File saveDir = new File(savePath);          if(!saveDir.exists()){              saveDir.mkdir();          }          File file = new File(saveDir+File.separator+fileName);              FileOutputStream fos = new FileOutputStream(file);               fos.write(getData);           if(fos!=null){              fos.close();            }          if(inputStream!=null){              inputStream.close();          }              System.out.println("info:"+url+" download success");         }            /**      * 从输入流中获取字节数组      * @param inputStream      * @return      * @throws IOException      */      public static  byte[] readInputStream(InputStream inputStream) throws IOException {            byte[] buffer = new byte[1024];            int len = 0;            ByteArrayOutputStream bos = new ByteArrayOutputStream();            while((len = inputStream.read(buffer)) != -1) {                bos.write(buffer, 0, len);            }            bos.close();            return bos.toByteArray();        }          public static void main(String[] args) {          try{          	//设置下载链接，下载后重命名，存储位置            downLoadFromUrl("http://101.95.48.97:8005/res/upload/interface/apptutorials/manualstypeico/6f83ce8f-0da5-49b3-bac8-fd5fc67d2725.png",                      "百度.jpg","d:/resource/images/diaodiao/country/");          }catch (Exception e) {              // TODO: handle exception          }      }  }