@RequestMapping(value = "/joinus/authCheck", method = RequestMethod.POST) public String checkMail(@RequestBody HashMap data) { String email = (String) data.get("email"); String userAuthKey = (String) data.get("userAuthKey"); String result = mailService.checkAuthMail(email, userAuthKey); return result; } 백단 소스 $.ajax({ type : "POST", url : "authCheck", data : JSON.stringify({ "email" : email, "u..