Shiro--自定义Realm进行认证和授权

迈不过友情╰ 2021-08-24 12:52 722阅读 0赞

### 创建Maven项目，引入依赖 ###

<dependencies>
    
            <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <version>4.12</version>
                <scope>test</scope>
            </dependency>
    
            
            <dependency>
                <groupId>org.apache.shiro</groupId>
                <artifactId>shiro-core</artifactId>
                <version>1.4.1</version>
            </dependency>
    
            
            <dependency>
                <groupId>org.apache.logging.log4j</groupId>
                <artifactId>log4j-slf4j-impl</artifactId>
                <version>2.12.1</version>
                <scope>test</scope>
            </dependency>
    
            <dependency>
                <groupId>org.apache.shiro</groupId>
                <artifactId>shiro-ehcache</artifactId>
                <version>1.4.1</version>
            </dependency>
    
            <dependency>
                <groupId>org.ehcache</groupId>
                <artifactId>ehcache</artifactId>
                <version>3.8.0</version>
            </dependency>
    
            <dependency>
                <groupId>org.apache.shiro</groupId>
                <artifactId>shiro-spring</artifactId>
                <version>1.4.1</version>
            </dependency>
        </dependencies>

log4j2.xml:

<?xml version="1.0" encoding="UTF-8"?>
    <configuration>
        
        <appenders>
            
            <console name="Console" target="SYSTEM_OUT">
                
                
                <patternlayout pattern="[%p] %m %n"/>
            </console>
        </appenders>
    
        
        
        <loggers>
            <root level="DEBUG">
                
                <appender-ref ref="Console"/>
            </root>
            
        </loggers>
    </configuration>

### User.class ###

public class User { 
    
        private String username;
        private String password;
        private Integer status; // 用户状态 0: 正常 1：禁用 2：锁定
    
        public User(String username, String password,Integer status) { 
            this.username = username;
            this.password = password;
            this.status = status;
        }
    
        public String getUsername() { 
            return username;
        }
    
        public void setUsername(String username) { 
            this.username = username;
        }
    
        public String getPassword() { 
            return password;
        }
    
        public void setPassword(String password) { 
            this.password = password;
        }
    
        public Integer getStatus() { 
            return status;
        }
    
        public void setStatus(Integer status) { 
            this.status = status;
        }
    }

### ShiroUtil.class ###

public class ShiroUtil { 
    
        /** * 初始化shiro运行环境 */
        static { 
    
            //1.初始化shiro的安全管理器
            DefaultSecurityManager securityManager = new DefaultSecurityManager();
    
            //2.设置用户的权限信息到安全管理器
            //Realm realm = new IniRealm("classpath:shiro.ini");
            Realm realm = new ShiroRealm();
            securityManager.setRealm(realm);
    
            //3. 使用SecurityUtils将securityManager设置到运行环境中
            SecurityUtils.setSecurityManager(securityManager);
        }
    
        public static Subject login(String username,String password) { 
    
            //1. 创建一个Subject实例
            Subject subject = SecurityUtils.getSubject();
    
            //2. 创建用于认证的认证的token，记录用户认证的身份和凭证即账号和密码
            AuthenticationToken token =
                    new UsernamePasswordToken(username, password);
    
            //3.主体要进行登录，登录的时候进行认证检查
            subject.login(token);
            return subject;
        }
    }

### 自定义Realm继承AuthorizingRealm ###

public class ShiroRealm extends AuthorizingRealm { 
    
    
        /** * 登录认证 * * @param authenticationToken * @return * @throws AuthenticationException */
        @Override
        protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException { 
    
            UsernamePasswordToken token = (UsernamePasswordToken) authenticationToken;
    
            // 1.获取用户输入的用户名
            String username = token.getUsername();
            // 2.获取用户输入的密码
            String password = new String(token.getPassword());
    
            // 3.根据用户名去DB查询对应的用户信息
            User user = new User("admin", "123456", 0);
            if (!user.getUsername().equals(username)) { 
                throw new UnknownAccountException("用户名不存在");
            }
            if (!user.getPassword().equals(password)) { 
                throw new CredentialsException("密码错误");
            }
            if (user.getStatus() == 1) { 
                throw new DisabledAccountException("账号被禁用");
            }
            if (user.getStatus() == 2) { 
                throw new LockedAccountException("账号被锁定");
            }
    
            System.out.println("认证成功...");
    
            // 创建简单认证信息对象
            SimpleAuthenticationInfo info =
                    new SimpleAuthenticationInfo(token.getPrincipal(), token.getCredentials(), getName());
    
            return info;
        }
    
    
        /** * 授权 * 将认证通过的用户的角色和权限信息设置到对应用户主体上 * * @param principals * @return */
        @Override
        protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) { 
    
            String username = principals.getPrimaryPrincipal().toString();
    
    
            //模拟从数据库获取当前用户的角色 通过用户名查询该用户拥有的角色名称
            Set<String> roleNameSet = new HashSet<>();
            roleNameSet.add("系统管理员");
            //roleNameSet.add("系统运维");
    
            //模拟从数据库获取当前用户的权限 通过用户名查询该用户拥有的权限名称
            Set<String> permissionNameSet = new HashSet<>();
            permissionNameSet.add("sys:user:list"); // 查看列表
            permissionNameSet.add("sys:user:info"); // 查看用户详情
            permissionNameSet.add("sys:user:create");// 创建用户
            permissionNameSet.add("sys:user:update");// 修改用户
            permissionNameSet.add("sys:user:delete");// 删除用户
    
            // 简单授权信息对象，对象中包含用户的角色和权限信息
            SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
            info.addRoles(roleNameSet);
            info.addStringPermissions(permissionNameSet);
    
            System.out.println("授权完成....");
            return info;
        }
    
    
    }

### 测试 ###

@Test
        public void test02() { 
            // 登录认证
            Subject subject = ShiroUtil.login("admin", "123456");
            // 授权资源检查
    
            // 模拟当前用户点击了 <新增用户> 按钮，检查该用户时候拥有新增用户的权限
            System.out.println("检查该用户时候拥有新增用户的权限：" + subject.isPermitted("sys:user:create"));
            System.out.println("检查该用户时候拥有新增角色的权限：" + subject.isPermitted("sys:role:create"));
    
    
            System.out.println("检查该用户是否是系统管理员角色：" + subject.hasRole("系统管理员"));
            System.out.println("检查该用户是否是系统运维角色：" + subject.hasRole("系统运维"));
            // 退出系统
            subject.logout();
    
        }

控制台输出：

认证成功...
    [DEBUG] Looked up AuthenticationInfo [admin] from doGetAuthenticationInfo 
    [DEBUG] AuthenticationInfo caching is disabled for info [admin].  Submitted token: [org.apache.shiro.authc.UsernamePasswordToken - admin, rememberMe=false]. 
    [DEBUG] Performing credentials equality check for tokenCredentials of type [[C and accountCredentials of type [[C] 
    [DEBUG] Both credentials arguments can be easily converted to byte arrays.  Performing array equals comparison 
    [DEBUG] Authentication successful for token [org.apache.shiro.authc.UsernamePasswordToken - admin, rememberMe=false].  Returned account [admin] 
    [DEBUG] No sessionValidationScheduler set.  Attempting to create default instance. 
    [INFO] Enabling session validation scheduler... 
    [DEBUG] Creating new EIS record for new session instance [org.apache.shiro.session.mgt.SimpleSession,id=null] 
    [DEBUG] No authorizationCache instance set.  Checking for a cacheManager... 
    [DEBUG] No cache or cacheManager properties have been set.  Authorization cache cannot be obtained. 
    授权完成....
    检查该用户时候拥有新增用户的权限：true
    [DEBUG] No authorizationCache instance set.  Checking for a cacheManager... 
    [DEBUG] No cache or cacheManager properties have been set.  Authorization cache cannot be obtained. 
    授权完成....
    检查该用户时候拥有新增角色的权限：false
    [DEBUG] No authorizationCache instance set.  Checking for a cacheManager... 
    [DEBUG] No cache or cacheManager properties have been set.  Authorization cache cannot be obtained. 
    授权完成....
    检查该用户是否是系统管理员角色：true
    [DEBUG] No authorizationCache instance set.  Checking for a cacheManager... 
    [DEBUG] No cache or cacheManager properties have been set.  Authorization cache cannot be obtained. 
    授权完成....
    检查该用户是否是系统运维角色：false
    [DEBUG] Logging out subject with primary principal admin 
    [DEBUG] No authorizationCache instance set.  Checking for a cacheManager... 
    [DEBUG] No cache or cacheManager properties have been set.  Authorization cache cannot be obtained. 
    [DEBUG] Stopping session with id [fc5a25ba-fd10-482d-9262-f033f724df05]