本文實例為大家分享了Java服務器中下載圖片的方法，供大家參考，具體內容如下
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import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.net.URL; import java.net.URLConnection; import org.apache.commons.io.IOUtils; /** * 從服務器中下載圖片 * * @param fileName 圖片地址 * @param response * @return */ @RequestMapping(value = "/download") public void downloadMedia(HttpServletResponse response, HttpServletRequest request) { InputStream inputStream = null; OutputStream outputStream = null; try { //處理中文亂碼 request.setCharacterEncoding("UTF-8"); String fileName = request.getParameter("fileName"); fileName = new String(fileName.getBytes("iso8859-1"),"UTF-8"); //處理瀏覽器兼容 response.setContentType("application/msexcel;charset=utf-8");//定義輸出類型 Enumeration enumeration = request.getHeaders("User-Agent"); String browserName = (String) enumeration.nextElement(); boolean isMSIE = browserName.contains("MSIE"); if (isMSIE) { response.addHeader("Content-Disposition", "attachment;fileName=" + URLEncoder.encode(fileName, "UTF8")); } else { response.addHeader("Content-Disposition", "attachment;fileName=" + new String(fileName.getBytes("gb2312"), "ISO8859-1")); } //url地址如果存在空格，會導致報錯！ 解決方法為：用+或者%20代替url參數中的空格。 fileName = fileName.replace(" ", "%20"); //圖片下載 URL url = new URL(fileName); URLConnection conn = url.openConnection(); outputStream = response.getOutputStream(); inputStream = conn.getInputStream(); IOUtils.copy(inputStream, outputStream); } catch (IOException e) { System.err.println(e); }finally { IOUtils.closeQuietly(inputStream); IOUtils.closeQuietly(outputStream); } } |
以上就是本文的全部內容，希望對大家的學習有所幫助。
