shiro系列定义Realm
Posted keepruning
tags:
篇首语:本文由小常识网(cha138.com)小编为大家整理,主要介绍了shiro系列定义Realm相关的知识,希望对你有一定的参考价值。
自定义realm;
/** * 认证和授权 */ @Component public class UserRealm extends AuthorizingRealm { @Autowired private UserService userService; @Autowired private AuthService authService; /** * 授权(验证权限时调用) */ @Override protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) { User user = (User)principals.getPrimaryPrincipal(); Integer userId = user.getUserId(); List<String> permsList = null; //系统管理员,拥有最高权限 if(userId == 1){ List<Auth> menuList = authService.queryList(new HashMap<String, Object>()); permsList = new ArrayList<String>(menuList.size()); for(Auth menu : menuList){ permsList.add(menu.getPerms()); } }else{ permsList = userService.queryAllPerms(userId); } //用户权限列表 Set<String> permsSet = new HashSet<String>(); for(String perms : permsList){ if(StringUtils.isBlank(perms)){ continue; } permsSet.addAll(Arrays.asList(perms.trim().split(","))); } SimpleAuthorizationInfo info = new SimpleAuthorizationInfo(); info.setStringPermissions(permsSet); return info; } /** * 认证(登录时调用) */ @Override protected AuthenticationInfo doGetAuthenticationInfo( AuthenticationToken authcToken) throws AuthenticationException { UsernamePasswordToken token = (UsernamePasswordToken)authcToken; //查询用户信息 User user = userService.queryByUserName(token.getUsername()); //账号不存在 if(user == null) { throw new UnknownAccountException("账号不存在"); } SimpleAuthenticationInfo info =null; info = new SimpleAuthenticationInfo(user, user.getPassword(), ByteSource.Util.bytes(user.getSalt()),getName()); return info; } @Override public void setCredentialsMatcher(CredentialsMatcher credentialsMatcher) { HashedCredentialsMatcher shaCredentialsMatcher = new CustomUserMatche(); shaCredentialsMatcher.setHashAlgorithmName(ShiroUtils.hashAlgorithmName); shaCredentialsMatcher.setHashIterations(ShiroUtils.hashIterations); super.setCredentialsMatcher(shaCredentialsMatcher); } }
1、UserRealm父类AuthorizingRealm将获取Subject相关信息分成两步:获取身份验证信息(doGetAuthenticationInfo)及授权信息(doGetAuthorizationInfo);
2、doGetAuthenticationInfo获取身份验证相关信息:首先根据传入的用户名获取User信息;然后如果user为空,那么抛出没找到帐号异常UnknownAccountException;如果user找到但锁定了抛出锁定异常LockedAccountException;最后生成AuthenticationInfo信息,交给间接父类AuthenticatingRealm使用CredentialsMatcher进行判断密码是否匹配,如果不匹配将抛出密码错误异常IncorrectCredentialsException;另外如果密码重试此处太多将抛出超出重试次数异常ExcessiveAttemptsException;在组装SimpleAuthenticationInfo信息时,需要传入:身份信息(用户名)、凭据(密文密码)、盐(username+salt),CredentialsMatcher使用盐加密传入的明文密码和此处的密文密码进行匹配。
3、doGetAuthorizationInfo获取授权信息:PrincipalCollection是一个身份集合,因为我们现在就一个Realm,所以直接调用getPrimaryPrincipal得到之前传入的用户名即可;然后根据用户名调用UserService接口获取角色及权限信息。
以上是关于shiro系列定义Realm的主要内容,如果未能解决你的问题,请参考以下文章
全栈编程系列SpringBoot整合Shiro(含KickoutSessionControlFilter并发在线人数控制以及不生效问题配置启动异常No SecurityManager...)(代码片段