2.02 开发注册功能

注册功能的开发步骤

• 访问注册页面
• 提交注册数据到服务端
  • 服务端验证账号是否已存在、邮箱是否已注册过
  • 服务端发送激活邮件
• 用户登录邮箱，点击链接激活注册账号（账号必须激活后才能登陆）

注册用户代码实现

dao

@Mapper
public interface UserMapper {

    int insertUser(User user);

}

　　

<sql id="insertFields">
   username, password, salt, email, type, status, activation_code, header_url, create_time
</sql> 

<insert id="insertUser" parameterType="User" keyProperty="id">
   insert into user (<include refid="insertFields"></include>)
   values(#{username}, #{password}, #{salt}, #{email}, #{type}, #{status}, #{activationCode}, #{headerUrl}, #{createTime})
</insert>

service

    public Map<String, Object> register(User user) {
        Map<String, Object> map = new HashMap<>();

        // 空值处理
        if (user == null) {
            throw new IllegalArgumentException("参数不能为空!");
        }
        if (StringUtils.isBlank(user.getUsername())) {
            map.put("usernameMsg", "账号不能为空!");
            return map;
        }
        if (StringUtils.isBlank(user.getPassword())) {
            map.put("passwordMsg", "密码不能为空!");
            return map;
        }
        if (StringUtils.isBlank(user.getEmail())) {
            map.put("emailMsg", "邮箱不能为空!");
            return map;
        }

        // 验证账号
        User u = userMapper.selectByName(user.getUsername());
        if (u != null) {
            map.put("usernameMsg", "该账号已存在!");
            return map;
        }

        // 验证邮箱
        u = userMapper.selectByEmail(user.getEmail());
        if (u != null) {
            map.put("emailMsg", "该邮箱已被注册!");
            return map;
        }

        // 注册用户
        user.setSalt(CommunityUtil.generateUUID().substring(0, 5));
        user.setPassword(CommunityUtil.md5(user.getPassword() + user.getSalt()));
        user.setType(0);
        user.setStatus(0);
        user.setActivationCode(CommunityUtil.generateUUID());
        user.setHeaderUrl(String.format("http://images.nowcoder.com/head/%dt.png", new Random().nextInt(1000)));
        user.setCreateTime(new Date());
        userMapper.insertUser(user);

        // 激活邮件
        Context context = new Context();
        context.setVariable("email", user.getEmail());
        // http://localhost:8080/community/activation/101/code
        String url = domain + contextPath + "/activation/" + user.getId() + "/" + user.getActivationCode();
        context.setVariable("url", url);
        String content = templateEngine.process("/mail/activation", context);
        mailClient.sendMail(user.getEmail(), "激活账号", content);

        return map;
    }

　　

controller

    @RequestMapping(path = "/register", method = RequestMethod.POST)
    public String register(Model model, User user) {
        Map<String, Object> map = userService.register(user);
        if (map == null || map.isEmpty()) {
            model.addAttribute("msg", "注册成功,我们已经向您的邮箱发送了一封激活邮件,请尽快激活!");
            model.addAttribute("target", "/index");
            return "/site/operate-result";
        } else {
            model.addAttribute("usernameMsg", map.get("usernameMsg"));
            model.addAttribute("passwordMsg", map.get("passwordMsg"));
            model.addAttribute("emailMsg", map.get("emailMsg"));
            return "/site/register";
        }
    }