Shiro授权及注解式开发

目的：

　　shiro授权

　　shiro注解式开发

---

Shiro授权

　　首先设计shiro权限表:

　　从图中我们也清晰的看出五张表之间的关系

　　

ShiroUserMapper

    Set<String> getRolesByUserId(Integer uid);

    Set<String> getPersByUserId(Integer uid);

ShiroUserMapper.xml

  <select id="getRolesByUserId" resultType="java.lang.String" parameterType="java.lang.Integer">
  select r.roleid from t_shiro_user u,t_shiro_user_role ur,t_shiro_role r
    where u.userid = ur.userid and ur.roleid = r.roleid
    and u.userid = #{uid}
</select>
  <select id="getPersByUserId" resultType="java.lang.String" parameterType="java.lang.Integer">
  select p.permission from t_shiro_user u,t_shiro_user_role ur,t_shiro_role_permission rp,t_shiro_permission p
  where u.userid = ur.userid and ur.roleid = rp.roleid and rp.perid = p.perid
  and u.userid = #{uid}
</select>

Service层

ShiroUserService

    /**
     * 角色验证
     * @param uid
     * @return
     */
    Set<String> getRolesByUserId(Integer uid);

    /**
     * 权限判断
     * @param uid
     * @return
     */
    Set<String> getPersByUserId(Integer uid);

ShiroUserServiceIpml

@Service("shiroUserService")
public class ShiroUserServiceImpl implements ShiroUserService {
    @Autowired
    private ShiroUserMapper shiroUserMapper;
    @Override
    public ShiroUser queryByName(String userName) {
        return shiroUserMapper.queryByName(userName);
    }
    @Override
    public int insert(ShiroUser shiroUser) {
        return shiroUserMapper.insert(shiroUser);
    }

    @Override
    public Set<String> getRolesByUserId(Integer uid) {
        return shiroUserMapper.getRolesByUserId(uid);
    }

    @Override
    public Set<String> getPersByUserId(Integer uid) {
        return shiroUserMapper.getPersByUserId(uid);
    }
}

编写MyRealm中的授权方法去获取数据源

public class MyRealm extends AuthorizingRealm {
    private ShiroUserService shiroUserService;

    public ShiroUserService getShiroUserService() {
        return shiroUserService;
    }

    public void setShiroUserService(ShiroUserService shiroUserService) {
        this.shiroUserService = shiroUserService;
    }
    /**
     * 授权
     * @param principalCollection
     * @return
     */
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        ShiroUser shiroUser = this.shiroUserService.queryByName(principalCollection.getPrimaryPrincipal().toString());
        Set<String> roleids = this.shiroUserService.getRolesByUserId(shiroUser.getUserid());
        Set<String> perIds = this.shiroUserService.getPersByUserId(shiroUser.getUserid());
        SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
        info.setRoles(roleids);
        info.setStringPermissions(perIds);
        return info;
    }
}

---

Shiro注解式开发

常用注解介绍

@RequiresAuthenthentication:表示当前Subject已经通过login进行身份验证;即 Subject.isAuthenticated()返回 true
@RequiresUser:表示当前Subject已经身份验证或者通过记住我登录的
@RequiresGuest:表示当前Subject没有身份验证或者通过记住我登录过，即是游客身份
@RequiresRoles(value = {"admin","user"},logical = Logical.AND):表示当前Subject需要角色admin和user
@RequiresPermissions(value = {"user:delete","user:b"},logical = Logical.OR):表示当前Subject需要权限user:delete或者user:b

注意：  必须将Shiro注解的开启放置到spring-mvc.xml中（即放在springMVC容器中加载），不然Shiro注解开启无效！

　　所以我们要在Springmvc文件中配置他

Springmvc.xml

<bean class="org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator"
          depends-on="lifecycleBeanPostProcessor">
        <property name="proxyTargetClass" value="true"></property>
    </bean>
    <bean class="org.apache.shiro.spring.security.interceptor.AuthorizationAttributeSourceAdvisor">
        <property name="securityManager" ref="securityManager"/>
    </bean>

    <bean id="exceptionResolver" class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">
        <property name="exceptionMappings">
            <props>
                <prop key="org.apache.shiro.authz.UnauthorizedException">
                    unauthorized
                </prop>
            </props>
        </property>
        <property name="defaultErrorView" value="unauthorized"/>
    </bean>

再Controller中运用注解

/**
 * @author 黄大娘
 * @company dogsun
 * @oreata 2019-10-14 21:28
 */
@Controller
public class ShiroUserController {
    @Autowired
    private ShiroUserService shiroUserService;/**
     * 讲解身份认证的注释
     * @param req
     * @param resp
     * @return
     */
    @RequiresUser
    @RequestMapping("/passUser")
    public String passUser(HttpServletRequest req, HttpServletResponse resp){
        return "admin/addUser";
    }

    /**
     * 角色认证的注释
     * 此方法只有同时具备1.4两个角色id，才能访问
     * @param req
     * @param resp
     * @return
     */
    @RequiresRoles(value = {"1","4"},logical = Logical.AND)
    @RequestMapping("/passRole")
    public String passRole(HttpServletRequest req, HttpServletResponse resp){
        return "admin/listUser";
    }

    /**
     * 如果角色，身份，权限的认证失败后的处理方式
     * @param req
     * @param resp
     * @return
     */
    @RequestMapping("/unauthorized")
    public String ht(HttpServletRequest req, HttpServletResponse resp){
        System.out.print("处理错误的方式！！！");
        return "login";
    }
    /**
     * 权限认证的注释
     *
     * @param req
     * @param resp
     * @return
     */
    @RequiresPermissions(value = {"user:update","user:view"},logical = Logical.OR)
    @RequestMapping("/passPer")
    public String passPer(HttpServletRequest req, HttpServletResponse resp){
        return "admin/resetPwd";
    }
}

main.jsp测试

<ul>
    shiro注解
    <li>
        <a href="${pageContext.request.contextPath}/passUser">身份认证</a>
    </li>
    <li>
        <a href="${pageContext.request.contextPath}/passRole">角色认证</a>
    </li>
    <li>
        <a href="${pageContext.request.contextPath}/passPer">权限认证</a>
    </li>
</ul>

谢谢观看！