1、保存至服務器
根據路徑保存至項目所在服務器上。
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try { // 構造URL URL url = new URL(imgUrl); // 打開連接 URLConnection con = url.openConnection(); // 輸入流 InputStream is = con.getInputStream(); // 1K的數據緩沖 byte [] bs = new byte [ 1024 ]; // 讀取到的數據長度 int len; // 輸出的文件流 OutputStream os = new FileOutputStream( "c:\\image.jpg" ); //保存路徑 // 開始讀取 while ((len = is.read(bs)) != - 1 ) { os.write(bs, 0 , len); } // 完畢,關閉所有鏈接 os.close(); is.close(); } catch (MalformedURLException e) { e.printStackTrace(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } |
2、保存至本地
以瀏覽器下載的方式保存至本地。
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String imgUrl= "" ; //URL地址 String fileName = imgUrl.substring(imgUrl.lastIndexOf( '/' ) + 1 ); BufferedInputStream is = null ; BufferedOutputStream os = null ; try { URL url = new URL(imgUrl); this .getServletResponse().setContentType( "application/x-msdownload;" ); this .getServletResponse().setHeader( "Content-disposition" , "attachment; filename=" + new String(fileName.getBytes( "utf-8" ), "ISO8859-1" )); this .getServletResponse().setHeader( "Content-Length" , String.valueOf(url.openConnection().getContentLength())); is = new BufferedInputStream(url.openStream()); os = new BufferedOutputStream( this .getServletResponse().getOutputStream()); byte [] buff = new byte [ 2048 ]; int bytesRead; while (- 1 != (bytesRead = is.read(buff, 0 , buff.length))) { os.write(buff, 0 , bytesRead); } if (is != null ) is.close(); if (os != null ) os.close(); } catch (MalformedURLException e) { e.printStackTrace(); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } |
以上這篇根據URL下載圖片至客戶端、服務器的簡單實例就是小編分享給大家的全部內容了,希望能給大家一個參考,也希望大家多多支持服務器之家。