springboot+shrio登录认证

借鉴开源项目ruoyi： http://doc.ruoyi.vip/#/

登录接口

@PostMapping("/login")
    @ResponseBody
    public AjaxResult ajaxLogin(String username, String password, Boolean rememberMe) {
        UsernamePasswordToken token = new UsernamePasswordToken(username, password, rememberMe);
        Subject subject = SecurityUtils.getSubject();
        try {
            subject.login(token);
            return success();
        } catch (AuthenticationException e) {
            String msg = "用户或密码错误";
            if (StringUtils.isNotEmpty(e.getMessage())) {
                msg = e.getMessage();
            }
            return error(msg);
        }
    }

这里登录直接交给shiro去做登录认证

realm中具体的登录实现（部分代码 具体看源码）

/**
     * 登录认证
     */
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
        UsernamePasswordToken upToken = (UsernamePasswordToken) token;
        String username = upToken.getUsername();
        String password = "";
        if (upToken.getPassword() != null) {
            password = new String(upToken.getPassword());
        }

        SysUser user = null;
        try {
            user = loginService.login(username, password);
        } catch (CaptchaException e) {
            throw new AuthenticationException(e.getMessage(), e);
        } catch (UserNotExistsException e) {
            throw new UnknownAccountException(e.getMessage(), e);
        } catch (UserPasswordNotMatchException e) {
            throw new IncorrectCredentialsException(e.getMessage(), e);
        } catch (UserPasswordRetryLimitExceedException e) {
            throw new ExcessiveAttemptsException(e.getMessage(), e);
        } catch (UserBlockedException e) {
            throw new LockedAccountException(e.getMessage(), e);
        } catch (RoleBlockedException e) {
            throw new LockedAccountException(e.getMessage(), e);
        } catch (Exception e) {
            log.info("对用户[" + username + "]进行登录验证..验证未通过{}", e.getMessage());
            throw new AuthenticationException(e.getMessage(), e);
        }
        SimpleAuthenticationInfo info = new SimpleAuthenticationInfo(user, password, getName());
        return info;
    }
/**
     * 登录
     */
    public SysUser login(String username, String password) {
        // 验证码校验
         if (!StringUtils.isEmpty(ServletUtils.getRequest().getAttribute(ShiroConstants.CURRENT_CAPTCHA))) {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("user.jcaptcha.error")));
            throw new CaptchaException();
        }
        // 用户名或密码为空 错误
        if (StringUtils.isEmpty(username) || StringUtils.isEmpty(password)) {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("not.null")));
            throw new UserNotExistsException();
        }
        // 密码如果不在指定范围内 错误
        if (password.length() < UserConstants.PASSWORD_MIN_LENGTH
                || password.length() > UserConstants.PASSWORD_MAX_LENGTH) {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("user.password.not.match")));
            throw new UserPasswordNotMatchException();
        }

        // 用户名不在指定范围内 错误
        if (username.length() < UserConstants.USERNAME_MIN_LENGTH
                || username.length() > UserConstants.USERNAME_MAX_LENGTH) {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("user.password.not.match")));
            throw new UserPasswordNotMatchException();
        }

        // 查询用户信息
        SysUser user = userService.selectUserByLoginName(username);

        if (user == null && maybeMobilePhoneNumber(username)) {
            user = userService.selectUserByPhoneNumber(username);
        }

        if (user == null && maybeEmail(username)) {
            user = userService.selectUserByEmail(username);
        }

        if (user == null) {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("user.not.exists")));
            throw new UserNotExistsException();
        }

        if (UserStatus.DELETED.getCode().equals(user.getDelFlag())) {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("user.password.delete")));
            throw new UserDeleteException();
        }

        if (UserStatus.DISABLE.getCode().equals(user.getStatus())) {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, MessageUtils.message("user.blocked", user.getRemark())));
            throw new UserBlockedException();
        }

        passwordService.validate(user, password);

        AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_SUCCESS, MessageUtils.message("user.login.success")));
        recordLoginInfo(user);
        return user;
    }




 public void validate(SysUser user, String password)
    {
        String loginName = user.getLoginName();

        AtomicInteger retryCount = loginRecordCache.get(loginName);

        if (retryCount == null)
        {
            retryCount = new AtomicInteger(0);
            loginRecordCache.put(loginName, retryCount);
        }
        if (retryCount.incrementAndGet() > Integer.valueOf(maxRetryCount).intValue())
        {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(loginName, Constants.LOGIN_FAIL, MessageUtils.message("user.password.retry.limit.exceed", maxRetryCount)));
            throw new UserPasswordRetryLimitExceedException(Integer.valueOf(maxRetryCount).intValue());
        }

        if (!matches(user, password))
        {
            AsyncManager.me().execute(AsyncFactory.recordLogininfor(loginName, Constants.LOGIN_FAIL, MessageUtils.message("user.password.retry.limit.count", retryCount)));
            loginRecordCache.put(loginName, retryCount);
            throw new UserPasswordNotMatchException();
        }
        else
        {
            clearLoginRecordCache(loginName);
        }
    }

说明：

• 在realm的登录认证中，通过自定义业务对用户名密码进行验证，并接入ehcache缓存，对登录的状态进行缓存