自定义shiro的验证方式

在认证、授权内部实现机制中，最终处理都将交给Real进行处理。因为在Shiro中，最终是通过Realm来获取应用程序中的用户、角色及权限信息的。

在应用程序中要做的是自定义一个Realm类，继承AuthorizingRealm抽象类，重载doGetAuthenticationInfo ()，重写获取用户信息的方法。而授权实现则与认证实现非常相似，在我们自定义的Realm中，重载doGetAuthorizationInfo()方法，重写获取用户权限的方法。

public class ShiroDbRealm extends AuthorizingRealm {

    /**
     * 登录认证/获取用户信息
     */
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authcToken)
            throws AuthenticationException {
        IShiro shiroFactory = ShiroFactroy.me();
        UsernamePasswordToken token = (UsernamePasswordToken) authcToken;
        //根据前端传的用户，查找数据库用户的记录封装在user里
        User user = shiroFactory.user(token.getUsername());
        ShiroUser shiroUser = shiroFactory.shiroUser(user);
        SimpleAuthenticationInfo info = shiroFactory.info(shiroUser, user, super.getName());
        return info;
    }

    /**
     * 权限认证/获取用户权限
     */
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
        IShiro shiroFactory = ShiroFactroy.me();
        ShiroUser shiroUser = (ShiroUser) principals.getPrimaryPrincipal();
        List<Integer> roleList = shiroUser.getRoleList();

        Set<String> permissionSet = new HashSet<>();
        Set<String> roleNameSet = new HashSet<>();

        for (Integer roleId : roleList) {
            List<String> permissions = shiroFactory.findPermissionsByRoleId(roleId);
            if (permissions != null) {
                for (String permission : permissions) {
                    if (ToolUtil.isNotEmpty(permission)) {
                        permissionSet.add(permission);
                    }
                }
            }
            String roleName = shiroFactory.findRoleNameByRoleId(roleId);
            roleNameSet.add(roleName);
        }

        SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
        info.addStringPermissions(permissionSet);
        info.addRoles(roleNameSet);
        return info;
    }

    /**
     * 设置认证加密方式
     */
    @Override
    public void setCredentialsMatcher(CredentialsMatcher credentialsMatcher) {
        super.setCredentialsMatcher(new CustomCredentialsMatcher());
    }
}

自定义密码认证方式

自定义实现类继承SimpleCredentialsMatcher，重载doCredentialsMatch方法，自定义验证方式

public class CustomCredentialsMatcher extends SimpleCredentialsMatcher {
    @Override
    public boolean doCredentialsMatch(AuthenticationToken authcToken, AuthenticationInfo info) {

        UsernamePasswordToken token = (UsernamePasswordToken) authcToken;
        Object tokenCredentials = encrypt(String.valueOf(token.getPassword()));
        //System.err.println("encryptionPw:"+encrypt(String.valueOf(token.getPassword())));
        Object accountCredentials = getCredentials(info);
        //将密码加密与系统加密后的密码校验，内容一致就返回true,不一致就返回false
        return equals(tokenCredentials, accountCredentials);
    }

    //密码加密方法
    private String encrypt(String data) {
        String encryptionPw = ShiroKit.md5(data);
        return encryptionPw;
    }
}

最后在自定义的Realm类中设置。

/**
     * 设置认证加密方式
     */
    @Override
    public void setCredentialsMatcher(CredentialsMatcher credentialsMatcher) {
        super.setCredentialsMatcher(new CustomCredentialsMatcher());
    }