/** * 用户名重复检查 * * @return * @throws IOException */ public void checkedUserName() throws IOException { member = new Member(); String userName = getRequest().getParameter("param"); member.setMemberName(userName); member = memberService.getByName(member); if (member != null && !member.getMemberName().equals("")) { map.put("info", "该用户名已存在!"); map.put("status", "n"); } else { map.put("status", "y"); } printJson(Object2Json(map)); }