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Shiro 授权

Posted on 2017-10-18 17:54  耍流氓的兔兔  阅读(2107)  评论(0编辑  收藏  举报

 

Shiro 授权:

  参考链接:http://jinnianshilongnian.iteye.com/blog/2020017

  授权,也称访问控制,即在应用中控制用户可以访问哪些资源(访问页面/页面操作/编辑数据等)

  roles:角色,代表操作集合,可以理解为权限的集合(隐式角色)

  perms:权限(显示角色)

三种设置权限方式:

  1 编程式: 

    Subject subject = SecurityUtils.getSubject();  
    if(subject.hasRole(“admin”)) {  
        //有权限  
    } else {  
        //无权限  
    }    

  2 注解式:

    @RequestMapping("/list")
    @ResponseBody
    @RequiresPermissions({"sys:menu:list"})
    public DataGridResult getPage(@RequestParam Map<String, Object> params) {
        Query query = new Query(params);
        return sysMenuService.getPageList(query);
    }

  3 标签式:

            <shiro:hasPermission name="sys:user:create">
                <a href="form?add" class="btn btn-success " type="button">
                    <i class="fa fa-plus"></i>&nbsp;&nbsp;<span class="bold">新增</span>
                </a>
            </shiro:hasPermission>

两种授权方式:

  1.1 基于角色授权:

[users]
draco = 615, role1, role3
harry = 130, role2

  1.2 基于权限授权:

[users]
draco = 615, role1, role3
harry = 130, role2
[roles]
role1 = sys:user,sys:menu
role2 = sys:user:create,sys:user:update,sys:user:list
role3 = sys:config:list

  2 编程式授权

      //分配权限        
        SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
        
        //为用户分配角色:
        List<String> roles = Arrays.asList("admin", "user");    
        info.addRoles(roles);
        
        //为用户分配资源:
        List<String> perms = Arrays.asList("sys:role:list", "sys:role:info", "sys:user:save");
        info.addStringPermissions(perms);

验证权限:

        boolean authenticated = currentUser.isAuthenticated();
        log.debug("是否登陆成功:"+ authenticated);
        
        //授权
        if(authenticated){
            
            //授权:角色
            
            //单个角色的判断
            boolean isHasRole = currentUser.hasRole("role1");
            System.out.println(isHasRole);
            
            //多个角色判断:逐个判断
            boolean[] isHasRoles = currentUser.hasRoles(Arrays.asList("role1", "role2"));
            for(int i = 0; i< isHasRoles.length; i++){
                System.out.print(isHasRoles[i]+"\t");
            }
            
            //多个角色判断:总体判断
            System.out.println();
            boolean isHasAllRoles = currentUser.hasAllRoles(Arrays.asList("role1", "role2"));
            System.out.println(isHasAllRoles);
            
            //check方法:抛出异常
            try {
                currentUser.checkRole("role3");
            } catch (AuthorizationException e) {
                System.out.println("你没有被分配这个角色");
                e.printStackTrace();
            }
            
            //授权:权限
            
            //单个授权的判断
            boolean isPermitted = currentUser.isPermitted("sys:user");
            System.out.println(isPermitted);
            
            //多个权限判断
            boolean isPermittedAll = currentUser.isPermittedAll("sys:user", "sys:menu");
            System.out.println(isPermittedAll);
            
            //check方法
            try {
                currentUser.checkPermission("sys:config:list");
            } catch (AuthorizationException e) {
                System.out.println("你没有被分配这个权限");
                e.printStackTrace();
            }
            
        }

授权流程:

  1 调用subject.isPermitted()进行验证,自动委托给SecurityManager

  2 SecurityManger将身份验证委托给Authorizer

  3 Authorizer负责真正的授权者,是Shiro API中授权核心的入口点

  4 Authorizer在进行授权之前,会调用相应的Realm获取Subject相应的角色/权限用于匹配传入的角色/权限

  5 Authorizer会判断Realm的角色/权限是否和传入的匹配,如果有多个Realm,会委托给ModularRealmAuthorizer进行循环判断,如果匹配如isPermitted*/hasRole*会返回true,否则返回false表示授权失败