Shiro限制登录尝试次数

/**
* 认证信息.(身份验证) : Authentication 是用来验证用户身份
 * 
 * @param token
 * @return
 * @throws AuthenticationException
 */
@Override
protected AuthenticationInfo doGetAuthenticationInfo(
        AuthenticationToken authcToken) throws AuthenticationException {


    System.out.println("身份认证方法：MyShiroRealm.doGetAuthenticationInfo()");

    UsernamePasswordToken token = (UsernamePasswordToken) authcToken;
    String name = token.getUsername();
    String password = String.valueOf(token.getPassword());
    //访问一次，计数一次
    ValueOperations<String, String> opsForValue = stringRedisTemplate.opsForValue();
    opsForValue.increment(SHIRO_LOGIN_COUNT+name, 1);
    //计数大于5时，设置用户被锁定一小时
    if(Integer.parseInt(opsForValue.get(SHIRO_LOGIN_COUNT+name))>=5){
        opsForValue.set(SHIRO_IS_LOCK+name, "LOCK");
        stringRedisTemplate.expire(SHIRO_IS_LOCK+name, 1, TimeUnit.HOURS);
    }
    if ("LOCK".equals(opsForValue.get(SHIRO_IS_LOCK+name))){
        throw new DisabledAccountException("由于密码输入错误次数大于5次，帐号已经禁止登录！");
    }
    Map<String, Object> map = new HashMap<String, Object>();
    map.put("nickname", name);
    //密码进行加密处理  明文为  password+name
    String paw = password+name;
    String pawDES = MyDES.encryptBasedDes(paw);
    map.put("pswd", pawDES);
    SysUser user = null;
    // 从数据库获取对应用户名密码的用户
    List<SysUser> userList = sysUserService.selectByMap(map);
    if(userList.size()!=0){
        user = userList.get(0);
    } 
    if (null == user) {
        throw new AccountException("帐号或密码不正确！");
    }else if(user.getStatus()==0){
        /**
         * 如果用户的status为禁用。那么就抛出<code>DisabledAccountException</code>
         */
        throw new DisabledAccountException("此帐号已经设置为禁止登录！");
    }else{
        //登录成功
        //更新登录时间 last login time
        user.setLastLoginTime(new Date());
        sysUserService.updateById(user);
        //清空登录计数
        opsForValue.set(SHIRO_LOGIN_COUNT+name, "0");
    }
    return new SimpleAuthenticationInfo(user, password, getName());
}

原文：https://blog.csdn.net/qq_20954959/article/details/61927119