Shiro权限控制学习记录2-自定义Reaml

偏执的太偏执、 2024-04-19 13:25 25阅读 0赞

## Shiro自定义Realm ##

**1.创建一个Realm类并继承AuthorizingRealm，实现两个方法如图1：**

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDQ2NzI1MQ_size_16_color_FFFFFF_t_70]  
**2.判断用户名和密码**

protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
    
            String username = (String)token.getPrincipal();
            //模拟数据库取出的对象
            String name="my";
            String passwword = "1234";
            //先判断用户是否存在
            if(!name.equals(username)){
                return null;
            }
            //用户名存在时new 一个认证信息，将用户名和密码交个他认证
            SimpleAuthenticationInfo info = new SimpleAuthenticationInfo(username, passwword, this.getName());
            return info;
        }

**3、将自定义的Reaml添加使用–ini文件下**

myRealm=com.dongpo.MyRealm
    securityManager.realms=$myRealm

**测试方法如下**

public static void main(String []args){
            //1.加载securityManage配置信息，创建工厂
            IniSecurityManagerFactory securityManagerFactory = new IniSecurityManagerFactory("classpath:shiro.ini");
            //2.通过工厂来创建安全管理实例
            SecurityManager securityManager = securityManagerFactory.getInstance();
            //3.将安全实例到运行环境
            SecurityUtils.setSecurityManager(securityManager);
            //4.获取shubject主体
            Subject subject = SecurityUtils.getSubject();
            //5.获取token
            UsernamePasswordToken token = new UsernamePasswordToken("my", "1234");
            //6.登录
            try {
                subject.login(token);
    
            }catch (UnknownAccountException e){
                System.out.println("账户不正确");
                e.printStackTrace();
            }catch (IncorrectCredentialsException e1){
                System.out.println("密码不正确");
                e1.printStackTrace();
            }
            System.out.println("登录状态"+subject.isAuthenticated());
            //7.退出
            subject.logout();
            System.out.println("登录状态"+subject.isAuthenticated());
        }

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