Java实现将图片上传到webapp路径下 路径获取方式

将图片上传到webapp路径下 路径获取方式

此方法获取到工程webapp文件夹下

String contexPath= request.getSession().getServletContext().getRealPath("/")；

获取IP地址端口号以及项目名称

<％
   String path = request.getContextPath();
   String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
％>

spring java 获取webapp下文件路径

  @RequestMapping("/act/worldcup_schedule_time/imgdownload")
   @ResponseBody
   public String scheduleDownload(HttpServletRequest request, HttpServletResponse response, HttpSession session) {
       response.setCharacterEncoding("UTF-8");
       String downLoadName = "worldcup.jpg";
       InputStream input = null;
       try {
           request.setCharacterEncoding("UTF-8");
           //获取文件的路径
//            String url = session.getServletContext().getRealPath("/") + "resources\\images\\act\\worldcup_merge\\worldcup720.png";
           String url = session.getServletContext().getRealPath("/") + "resources/images/act/worldcup_merge/worldcup720.png";
           System.out.println(url);
           File file = new File(url);

input = FileUtils.openInputStream(file);
           byte[] data = IOUtils.toByteArray(input);

//System.out.println("文件名:"+downLoadName);
           response.reset();
           //设置响应的报头信息(中文问题解决办法)
           response.setHeader("content-disposition", "attachment;fileName=" + URLEncoder.encode(downLoadName, "UTF-8"));
           response.addHeader("Content-Length", "" + data.length);
           response.setContentType("image/png; charset=UTF-8");

IOUtils.write(data, response.getOutputStream());
       } catch (Exception e) {
           logger.error("下载图片出错");
           if (input != null) {
               IOUtils.closeQuietly(input);
           }
       }
       return null;
   }

来源：https://blog.csdn.net/Architect_CSDN/article/details/89222872