Shiro教程之三自定义Realm认证和授权(结合数据库)

permission 菜单和权限表
role 角色表
role_permission 角色和权限的关系表
user 用户表
user_role用户和角色之间的关系表

<!-- Shiro filter start -->
    <filter>
        <filter-name>shiroFilter</filter-name>
        <filter-class>
            org.springframework.web.filter.DelegatingFilterProxy
        </filter-class>
        <init-param>
            <param-name>targetFilterLifecycle</param-name>
            <param-value>true</param-value>
        </init-param>
        <!-- 下面这个参数表示,applicationContext.xml(Shiro过滤器链)的名字,如果省略,配置器链名默认就是过滤器名字-->
        <init-param>
            <param-name>targetBeanName</param-name>
            <param-value>shiroFilter</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>shiroFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <!-- Shiro filter end -->

    <!-- 10. Shiro认证权限配置-->
    <!-- ================ Shiro start ================ -->

    <!-- (1).声明凭证匹配器(密码加密用)-->
    <bean id="credentialsMatcher" class="org.apache.shiro.authc.credential.HashedCredentialsMatcher">
        <!--注入算法-->
        <property name="hashAlgorithmName" value="md5"></property>
        <!--注入散列次数-->
        <property name="hashIterations" value="1"></property>
    </bean>

    <!-- (2).配置Realm-->
    <bean id="shiroReaml" class="com.cc8w.shiro.ShiroRealm">
        <!--注入凭证匹配器-->
        <property name="credentialsMatcher" ref="credentialsMatcher"></property>
    </bean>

    <!-- (3). 创建安全管理器-->
    <bean id="securityManager" class="org.apache.shiro.web.mgt.DefaultWebSecurityManager">
        <!--注入reaml-->
        <property name="realm" ref="shiroReaml"></property>
    </bean>

    <!-- (4). 配置过滤器链-->
    <!-- Shiro 的Web过滤器 id必须和web.xml里面的shiroFilter的 targetBeanName的值一样 -->
    <bean id="shiroFilter" class="org.apache.shiro.spring.web.ShiroFilterFactoryBean">
        <!--Shiro的核心安全接口,这个属性是必须的-->
        <property name="securityManager" ref="securityManager"></property>
        <!-- 要求登录时的链接(登录页面地址),非必须属性,属性会自动寻找web工程根目录下的"/login.jsp"页面-->
        <property name="loginUrl" value="/login.jsp"></property>
        <!-- Shiro 的Web过滤器 id必须和web.xml里面的shiroFilter的 targetBeanName的值一样 -->
        <!--property name="successUrl" value="success.do"></property-->
        <!-- 用户访问未对其授权的资源时，所显示的连接 -->
        <property name="unauthorizedUrl" value="unauthorized.jsp"></property>
        <!-- 过滤器链的定义,从上往下顺序执行,一般将/**放在最后-->
        <property name="filterChainDefinitions">
            <value>
                <!-- /**=authc 所有url都必须认证通过才可以访问 -->
                /index.jsp*=anon
                /login/toLogin*=anon
                /login/login*=anon
                <!-- 如果访问/login/logout就是用Shiro注销session-->
                /login/logout=logout
                <!-- /** = anon所有url都可以匿名访问 -->
                <!-- /** = authc -->
                <!-- /*/* = authc -->
                <!-- /** = authc所有url都不可以匿名访问 必须放到最后面 -->
                /** = authc
            </value>
        </property>
    </bean>
    <!-- ================ Shiro end ================ -->

package com.cc8w.shiro;


import com.cc8w.entity.UserActivePojo;
import com.cc8w.entity.UserPojo;
import com.cc8w.service.PermssionService;
import com.cc8w.service.RoleService;
import com.cc8w.service.UserService;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import java.util.List;


/**
 * Shiro默认使用自带的IniRealm，IniRealm从ini配置文件中读取用户的信息，大部分情况下需要从系统的数据库中读取用户信息，所以需要自定义realm。
 * 最基础的是Realm接口，CachingRealm负责缓存处理，AuthenticationRealm负责认证，AuthorizingRealm负责授权，通常自定义的realm继承AuthorizingRealm
 */
@Component
public class ShiroRealm extends AuthorizingRealm {

    @Autowired
    private UserService userService;
    @Autowired
    private RoleService roleService;
    @Autowired
    private PermssionService permssionService;
    @Override
    public String getName() {
        return this.getClass().getSimpleName();
    }



    /*
     * 登录信息和用户验证信息验证(non-Javadoc)
     * @see org.apache.shiro.realm.AuthenticatingRealm#doGetAuthenticationInfo(org.apache.shiro.authc.AuthenticationToken)
     */
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
        //1.从authenticationToken中获取身份信息,其实就是用户的登录名
        String username = authenticationToken.getPrincipal().toString();
        String password = authenticationToken.getCredentials().toString();

        //2.根据用户名查询用户是否存在
        UserPojo user=userService.queryUserByUserName(username);
        System.out.println(user);
        //返回null说明用户不存在
        if(null!=user) {
            //2.1根据用户名去查询用户拥有哪些角色
            List<String> roles= roleService.queryRolesByUserName(user.getUserName());
            System.out.println(roles);
            //2.2根据用户名查询用户拥有哪些权限
            List<String> permissions=permssionService.queryPermissionsByUserName(user.getUserName());

            UserActivePojo activeUser=new UserActivePojo(user, roles, permissions);

           //3.返回认证信息
            /**
             * 参数1  用户身份
             * 参数2 用户在数据库里面存放的密码
             * 参数3 当前类名
             */
            SimpleAuthenticationInfo info=new SimpleAuthenticationInfo(activeUser, user.getPassword(), this.getName());
            //SimpleAuthenticationInfo info=new SimpleAuthenticationInfo(principal, hashedCredentials, credentialsSalt, realmName)
            return info;

        }
        return null;
    }

    /*
     * 授权查询回调函数, 进行鉴权但缓存中无用户的授权信息时调用,负责在应用程序中决定用户的访问控制的方法(non-Javadoc)
     * @see org.apache.shiro.realm.AuthorizingRealm#doGetAuthorizationInfo(org.apache.shiro.subject.PrincipalCollection)
     */
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        //1.获得用户身份信息(PrincipalCollection有认证回调传来的第一个参数[activeUser])
        UserActivePojo activeUser = (UserActivePojo) principalCollection.getPrimaryPrincipal();
        System.out.println("doGetAuthorizationInfo");
        //2.根据身份信息获取权限数据
        SimpleAuthorizationInfo info=new SimpleAuthorizationInfo();

        //3.根据用户查询用户的角色 (其实认证方法一并查询出来了,保存在UserActivePojo)
        List<String> roles = activeUser.getRoles();
        if(null!=roles&&roles.size()>0) {
            info.addRoles(roles);//添加角色
        }
        //4.根据用户查询用户的权限
        List<String> permissions=activeUser.getPermissions();
        if(null!=permissions&&permissions.size()>0) {
            info.addStringPermissions(permissions);//添加权限
        }

        /**
         * 总结:本来授权->查角色和权限都在本方法写(但是前端每查询一次权限,就会回调本方法一次,
         * 所以直接查数据库,对数据库有压力),所以最后,
         * 1.把查角色和权限方法写在了认证,然后封装成activeUser传递过来,这样Controller每次查权限,就不用查数据库了,直接在activeUser获取即可.
         * 2.缓存应该也可以解决
         */


        return info;
    }


}

package com.cc8w.test;



import com.cc8w.shiro.ShiroRealm;
import org.apache.log4j.Logger;
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.IncorrectCredentialsException;
import org.apache.shiro.authc.UnknownAccountException;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.authz.AuthorizationException;
import org.apache.shiro.authz.UnauthenticatedException;
import org.apache.shiro.authz.UnauthorizedException;
import org.apache.shiro.config.IniSecurityManagerFactory;
import org.apache.shiro.mgt.DefaultSecurityManager;
import org.apache.shiro.subject.Subject;
import org.apache.shiro.util.Factory;
import org.apache.shiro.mgt.SecurityManager;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import java.util.Arrays;

/**
 *
 */
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"classpath:applicationContext.xml"})
public class TestShiro {
    private static Logger logger = Logger.getLogger(TestShiro.class);

    @Autowired
    private ShiroRealm shiroRealm;

    public static void main(String[] args) {
        TestShiro ts = new TestShiro();
        ts.testAuth();


    }


    //三,登录测试(自定义Realm)
    @Test
    public void testRealmLogin(){
        //1.创建一个安全管理器的工厂
        Factory<SecurityManager> factory = new IniSecurityManagerFactory();
        //2.在工厂中获取安全管理器
        DefaultSecurityManager securityManager = (DefaultSecurityManager) factory.getInstance();

        //2.1 创建自定义Realm注入到安全管理器
        //ShiroRealm shiroRealm = new ShiroRealm();//(SpringM在bean控制)
        securityManager.setRealm(shiroRealm);

        //3.将securityManager绑定到运行环境
        SecurityUtils.setSecurityManager(securityManager);
        //4.获取Subject对象(将要登录的用户)
        Subject subject = SecurityUtils.getSubject();
        //5.获取要登录用户的token,客户端传递过来的用户名和密码
        String username = "zhangsan",password="123456";
        UsernamePasswordToken token = new UsernamePasswordToken(username,password);

        try{
            //6.登陆(认证)
            subject.login(token);
            logger.info("登录了");

        }catch (IncorrectCredentialsException  e ){
            logger.info("密码不正确");
            logger.info(e);
        }catch (UnknownAccountException e) {
            System.out.println("没有这个帐号");
        }catch (AuthenticationException e) {
            e.printStackTrace();
        }

        //如果登录成功了,可以获取subject中各种状态了
        Boolean isAuth = subject.isAuthenticated();
        System.out.println("认证状态：" + isAuth);

        // 7.授权 分为:基于角色授权 基于资源的授权
        //7.1 基于角色授权
        boolean permited  = subject.hasRole("role1");
        System.out.println("这是授权单个:"+permited);
        boolean hasAllRoles = subject.hasAllRoles(Arrays.asList("role1","role2","role3"));
        System.out.println("这个授权多个"+hasAllRoles);

        // 使用check方法进行授权，如果授权不通过会抛出异常
        // subject.checkRole("role13");
        try {
            subject.checkRole("roles1");
        }catch (UnauthenticatedException e){
            logger.info("没有这个角色");
            //e.printStackTrace();
        }catch (UnauthorizedException e){
            logger.info("没有这个权限");
            //e.printStackTrace();
        }


        //7.2 基于资源的授权
        //isPermitted传入权限标识符
        boolean isPermitted = subject.isPermitted("user:query");
        System.out.println("单个权限判断:"+isPermitted);

        boolean isPermittedAll = subject.isPermittedAll("user:query","user:adb","user:add");
        System.out.println("多个权限判断"+isPermittedAll);

        // 使用check方法进行授权，如果授权不通过会抛出异常
        try {
            subject.checkPermission("user:adb");
        }catch (UnauthenticatedException e){
            logger.info("没有这个角色");
            //e.printStackTrace();
        }catch (UnauthorizedException e){
            logger.info("没有这个权限");
            //e.printStackTrace();
        }





    }

    //四,授权验证(自定义Realm)
    public void testRealmAuth(){
        //其实授权也需要登陆(上面方法第7条之后:就是授权的验证)

    }


}