/*** 修改header信息，key-value键值对儿加入到header中,如果存在，替换* @param request* @param key* @param value*/
public static void reflectRequestParam(HttpServletRequest request, String key, String value){Class<? extends HttpServletRequest> requestClass = request.getClass();try {Field request1 = requestClass.getDeclaredField("request");request1.setAccessible(true);Object o = request1.get(request);Field coyoteRequest = o.getClass().getDeclaredField("coyoteRequest");coyoteRequest.setAccessible(true);Object o1 = coyoteRequest.get(o);Field headers = o1.getClass().getDeclaredField("headers");headers.setAccessible(true);MimeHeaders o2 = (MimeHeaders)headers.get(o1);if(!StringUtils.isEmpty(request.getHeader(key))){o2.removeHeader(key);}o2.addValue(key).setString(value);} catch (Exception e) {e.printStackTrace();}
}