解决@PathVariable对于特殊字符截断的问题

@ResponseBody
 @RequestMapping(value="/download/{fileName:[a-zA-Z0-9\\.\\-\\_]+}", method = RequestMethod.GET)
 public void downloadAmr( HttpServletRequest request, HttpServletResponse response, @PathVariable("fileName") String fileName) {
 response.setContentType("application/octet-stream");
 String dir = System.getProperty("catalina.home"); //获得tomcat所在的工作路径 
 System.out.println("tomcat路径=" + dir); 
 //获取到存储了文件存储位置的filedir.properties 文件路径 
 String dir2 = dir.substring(0, dir.length()) + File.separator +"webapps" + File.separator + "ROOT" + File.separator + fileName; 
 File file = new File(dir2);
 ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
 byte[] buffer = new byte[1024]; 
 int len; 
 try { 
 InputStream inputStream = new FileInputStream(file);
 while ((len = inputStream.read(buffer)) > -1 ) { 
 byteArrayOutputStream.write(buffer, 0, len); 
 } 
 byteArrayOutputStream.flush(); 
 response.getOutputStream().write(byteArrayOutputStream.toByteArray());
 } catch (FileNotFoundException e) {
 logger.error("读取文件异常", e);
 } catch (IOException e) { 
 logger.error(e.getMessage(), e); 
 } 
 logger.info("下载进入。。。。。。。。。。。。。。。。。");
 }

@RequestMapping(value = "/user/findPassword/{email}", method = RequestMethod.GET, produces="application/json")

@RequestMapping(value = "/user/findPassword/{email:.+}", method = RequestMethod.GET, produces="application/json")