shiro动态刷新权限

1. 代码

话不多说,直接上代码:

import java.util.LinkedHashMap;
import java.util.Map;

import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.filter.mgt.DefaultFilterChainManager;
import org.apache.shiro.web.filter.mgt.PathMatchingFilterChainResolver;
import org.apache.shiro.web.servlet.AbstractShiroFilter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import com.qfx.demo.cache.MenuRoleCache;
import com.qfx.demo.cache.MenuRoleCache2;
import com.qfx.demo.vo.SysMenuRole;

@Component
public class ShiroPermissionSer {

    @Autowired
    ShiroFilterFactoryBean shiroFilterFactoryBean;

    private int count = 1;

    /**
     * <h5>功能:动态更新shiro权限(无需重启)</h5>
     * 
     * @return 
     */
    public boolean updatePermission() {
        boolean flag = false;
        synchronized (shiroFilterFactoryBean) {
            AbstractShiroFilter shiroFilter = null;
            try {
                shiroFilter = (AbstractShiroFilter) shiroFilterFactoryBean.getObject();
                PathMatchingFilterChainResolver filterChainResolver = (PathMatchingFilterChainResolver) shiroFilter.getFilterChainResolver();
                DefaultFilterChainManager manager = (DefaultFilterChainManager) filterChainResolver.getFilterChainManager();
                // 1. 清空老的权限控制
                manager.getFilterChains().clear();
                shiroFilterFactoryBean.getFilterChainDefinitionMap().clear();

                // ========== 2. 动态加载权限核心部分开始 ==========
                // 后面这个可以直接从数据库里面获取
                Map<String, String> filterChainDefinitionMap = new LinkedHashMap<String, String>();
                // 对静态资源设置匿名访问,从resoutces/static后面开始写
                filterChainDefinitionMap.put("/css/**", "anon");
                // 可匿名访问的地址
                filterChainDefinitionMap.put("/", "anon");
                filterChainDefinitionMap.put("/index.jsp", "anon");
                filterChainDefinitionMap.put("/login/loginPage", "anon");
                filterChainDefinitionMap.put("/login/register", "anon");
                filterChainDefinitionMap.put("/login/login", "anon");
                // 请求 logout.do地址,shiro去清除session
                filterChainDefinitionMap.put("/logout", "logout");

                //循环url,逐个添加到section中。section就是filterChainDefinitionMap,
                //里面的键就是链接URL,值就是存在什么条件才能访问该链接(正式环境从数据库获取,这里模拟数据权限切换)
                if (count == 1) {
                    Map<String, SysMenuRole> menuRoleMap = MenuRoleCache2.menuRoleCacheMap;
                    for (String key : menuRoleMap.keySet()) {
                        filterChainDefinitionMap.put(key, "roles["+menuRoleMap.get(key).getRoleNames()+"]");
                    }
                    count = 0;
                } else {
                    Map<String, SysMenuRole> menuRoleMap = MenuRoleCache.menuRoleCacheMap;
                    for (String key : menuRoleMap.keySet()) {
                        filterChainDefinitionMap.put(key, "roles["+menuRoleMap.get(key).getRoleNames()+"]");
                    }
                    count = 1;
                }

                //所有url都必须认证通过才可以访问，必须放在最后
                filterChainDefinitionMap.put("/**", "authc");

                shiroFilterFactoryBean.setFilterChainDefinitionMap(filterChainDefinitionMap);
                // ========== 2. 动态加载权限核心部分结束 ==========

                // 3. 重新构建生成
                Map<String, String> chains = shiroFilterFactoryBean.getFilterChainDefinitionMap();
                for (Map.Entry<String, String> entry : chains.entrySet()) {
                    String url = entry.getKey();
                    String chainDefinition = entry.getValue().trim().replace(" ", "");
                    manager.createChain(url, chainDefinition);
                }
                flag = true;
                System.out.println("更新权限成功");
            } catch (Exception e) {
                throw new RuntimeException("更新shiro权限出现错误!");
            }
        }
        return flag;
    }
}

2. 源码

源码请移步至码云qfxSpringbootShiroDemo下载

来源：51CTO

作者：pannijingling

链接：https://blog.51cto.com/1197822/2476729