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Springboot之Shiro权限管理

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文章目录

Springboot之Shiro权限管理

1.shiro有三哥核心api(接口)

Subject:用户主体(就是把操作权交给 SecurityManager)

SecurityManage:安全管理器(关联Realm)

Realm:Shiro 链接数据的桥梁

2.如何使用:

第一步导入shiro与springboot整合依赖

<!-- shiro与spring整合依赖 -->
		<dependency>
			<groupId>org.apache.shiro</groupId>
			<artifactId>shiro-spring</artifactId>
			<version>1.4.0</version>
		</dependency>

第二步配置shiro类

package com.itheima.shiro;

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

import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import at.pollux.thymeleaf.shiro.dialect.ShiroDialect;

/**
 * Shiro的配置类
 * @author lenovo
 *
 */
@Configuration
public class ShiroConfig {

	/**
	 * 创建ShiroFilterFactoryBean
	 */
	@Bean
	public ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier("securityManager")DefaultWebSecurityManager securityManager){

		ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();第一步创建过滤器对象
		
		//设置安全管理器放入核心api(securityManager)
		shiroFilterFactoryBean.setSecurityManager(securityManager);
		
		//添加Shiro内置过滤器
		/**
		 * Shiro内置过滤器,可以实现权限相关的拦截器
		 *    常用的过滤器:
		 *       anon: 无需认证(登录)可以访问
		 *       authc: 必须认证才可以访问
		 *       user: 如果使用rememberMe的功能可以直接访问
		 *       perms: 该资源必须得到资源权限才可以访问
		 *       role: 该资源必须得到角色权限才可以访问
		 */
		Map<String,String> filterMap = new LinkedHashMap<String,String>();
		/*filterMap.put("/add", "authc");
		filterMap.put("/update", "authc");*/
		
		filterMap.put("/testThymeleaf", "anon");
		//放行login.html页面
		filterMap.put("/login", "anon");
		
		//授权过滤器
		//注意:当前授权拦截后,shiro会自动跳转到未授权页面
		filterMap.put("/add", "perms[user:add]");
		filterMap.put("/update", "perms[user:update]");
		
		filterMap.put("/*", "authc");
		
		//修改调整的登录页面
		shiroFilterFactoryBean.setLoginUrl("/toLogin");
		//设置未授权提示页面
		shiroFilterFactoryBean.setUnauthorizedUrl("/noAuth");
		
		shiroFilterFactoryBean.setFilterChainDefinitionMap(filterMap);
		
		
		return shiroFilterFactoryBean;
	}
	
	/**
	 * 创建DefaultWebSecurityManager
	 * 安全处理器SecurityManage:安全管理器(关联Realm)
	 */
	@Bean(name="securityManager")
	public DefaultWebSecurityManager getDefaultWebSecurityManager(@Qualifier("userRealm")UserRealm userRealm){
		DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
		//关联realm
		securityManager.setRealm(userRealm);
		return securityManager;
	}
	
	/**
	 * 创建Realm
	 */
	@Bean(name="userRealm")
	public UserRealm getRealm(){
		return new UserRealm();
	}
	
	/**
	 * 配置ShiroDialect,用于thymeleaf和shiro标签配合使用
	 */
	@Bean
	public ShiroDialect getShiroDialect(){
		return new ShiroDialect();
	}
}

第三步自定义一个Realm类(授权和认证的作用)

授权:根据不同角色的方式进行授予不同的权利

认证:验证账户名等是否正确

package com.itheima.shiro;

import org.apache.shiro.SecurityUtils;
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.authc.UsernamePasswordToken;
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.apache.shiro.subject.Subject;
import org.springframework.beans.factory.annotation.Autowired;

import com.itheima.domain.User;
import com.itheima.service.UserService;

/**
 * 自定义Realm
 * @author lenovo
 *
 */
public class UserRealm extends AuthorizingRealm{

	/**
	 * 执行授权逻辑
	 */
	@Override
	protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection arg0) {
		System.out.println("执行授权逻辑");
		
		//给资源进行授权
		SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
		
		//添加资源的授权字符串
		//info.addStringPermission("user:add");
		
		//到数据库查询当前登录用户的授权字符串
		//获取当前登录用户
		Subject subject = SecurityUtils.getSubject();
		User user = (User)subject.getPrincipal();
		User dbUser = userSerivce.findById(user.getId());
		
		info.addStringPermission(dbUser.getPerms());
		
		return info;
	}
	
	@Autowired
	private UserService userSerivce;

	/**
	 * 执行认证逻辑
	 */
	@Override
	protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken arg0) throws AuthenticationException {
		System.out.println("执行认证逻辑");
		
		//编写shiro判断逻辑,判断用户名和密码
		//1.判断用户名
		UsernamePasswordToken token = (UsernamePasswordToken)arg0;
		
		User user = userSerivce.findByName(token.getUsername());
		
		if(user==null){
			//用户名不存在
			return null;//shiro底层会抛出UnKnowAccountException
		}
		
		//2.判断密码
		return new SimpleAuthenticationInfo(user,user.getPassword(),"");
	}

}


标签:Springboot,authc,shiro,org,apache,import,权限,Shiro,user
来源: https://blog.csdn.net/huiguo_/article/details/114482176