18.2云笔记项目.docxVIP

登录(续)显示错误消息原理:重构控制器增加异常处理方法 UserController@ExceptionHandler( UserNotFoundException.class) @ResponseBody public JsonResult handleUserNotFound( UserNotFoundExceptione){ e.printStackTrace(); return newJsonResult(2,e); } @ExceptionHandler(PasswordException.class) @ResponseBody public JsonResult handlePassword( PasswordException e){ e.printStackTrace(); return new JsonResult(3,e); } 重构JsonResult 添加 构造器public JsonResult(int state, Throwable e) { this.state = state; this.message = e.getMessage(); } 重构 login.js 的loginAction方法, 显示错误信息var msg = result.message; if(result.state==2){ $(#count).next().html(msg); }else if(result.state==3){ $(#password).next().html(msg); }else{ alert(msg); } 测试注册功能原理:1. 持久层声明持久层方法: UserDaoint addUser(User user); 声明SQL UserMappeer.xmlinsert id=addUser parameterType=cn.tedu.note.entity.User insert into cn_user ( cn_user_id, cn_user_name, cn_user_password, cn_user_token, cn_user_nick ) values ( #{id}, #{name}, #{password}, #{token}, #{nick} ) /insert 测试 UserDaoTest:UserDao dao; @Before public void initDao(){ dao = ctx.getBean( userDao, UserDao.class); } @Test public void testAddUser(){ String id=UUID.randomUUID().toString(); String name = Tom; String salt = 今天你吃了吗?; String password = DigestUtils.md5Hex(salt+123456); String token = ; String nick = ; User user = new User( id, name, password, token, nick); int n = dao.addUser(user); System.out.println(n); } 2. 业务层声明业务层方法 UserService/** * UserService 中添加注册功能 * @param name * @param nick * @param password * @param confirm * @return 注册成功的用户信息 * @throws UserNameException 用户名异常 * @throws PasswordException 密码异常 */ User regist(String name, String nick, String password, String confirm) throws UserNameException, PasswordException; 声明业务层异常 UserNameExceptionpublic class UserNameException extends RuntimeException { private static final long serialVersionUID = 6435296194529486206L; public UserNameException() { } public UserNameException(String message) { super(message); } public UserNameException(Throwable cause) { su