Shiro

1、导入依赖

<dependency>
    <groupId>org.apache.shiro</groupId>
    <artifactId>shiro-spring</artifactId>
    <version>1.4.1</version>
</dependency>

2、Config配置

UserRealm：

package com.sw.config;

import com.sw.pojo.User;
import com.sw.service.UserService;
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.*;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.session.Session;
import org.apache.shiro.subject.PrincipalCollection;
import org.apache.shiro.subject.Subject;
import org.springframework.beans.factory.annotation.Autowired;

/**
 * @Author suaxi
 * @Date 2020/12/24 16:56
 */

//自定义UserRealm
public class UserRealm extends AuthorizingRealm {

    @Autowired
    private UserService userService;

    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        System.out.println("执行了===》授权doGetAuthorizationInfo");
        SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
        info.addStringPermission("user:add");
        //获得当前登录的对象
        Subject subject = SecurityUtils.getSubject();
        User currentUser = (User) subject.getPrincipal(); //拿到user对象
        //设置当前用户的权限
        info.addStringPermission(currentUser.getPerms());
        return info;
    }

    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
        System.out.println("执行了===》认证doGetAuthorizationInfo");

        UsernamePasswordToken userToken = (UsernamePasswordToken) token;
        //从数据库查询用户信息
        User user = userService.findUserByName(userToken.getUsername());
        if (user==null){ //用户为空
            return null; //抛出 UnknownAccountException 异常
        }

        //设置session
        Subject subject = SecurityUtils.getSubject();
        Session session = subject.getSession();
        session.setAttribute("loginUser",user);

        //密码认证由shiro做
        return new SimpleAuthenticationInfo(user,user.getPassword(),"");
    }
}

ShiroConfig:

package com.sw.config;

import at.pollux.thymeleaf.shiro.dialect.ShiroDialect;
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 java.util.LinkedHashMap;
import java.util.Map;

/**
 * @Author suaxi
 * @Date 2020/12/24 16:54
 */

@Configuration
public class ShiroConfig {

    //3、ShiroFilterFactoryBean
    @Bean
    public ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier("securityManager")DefaultWebSecurityManager defaultWebSecurityManager){
        ShiroFilterFactoryBean bean = new ShiroFilterFactoryBean();
        //设置安全管理器
        bean.setSecurityManager(defaultWebSecurityManager);

        //添加shiro的内置过滤器
        /*
        anon：无需认证
        authc：必须认证
        user：必须有 “记住我” 功能才可以访问
        perms：拥有对某个资源的权限才能访问
        role：拥有某个角色权限才能访问
         */
        Map<String, String> filterMap = new LinkedHashMap<>();
        filterMap.put("/user/update","perms[user:update]");
        filterMap.put("/user/add","perms[user:add]");
        filterMap.put("/logout","logout"); //注销
        filterMap.put("/user/*","authc");
        bean.setFilterChainDefinitionMap(filterMap);

        //设置登录请求
        bean.setLoginUrl("/toLogin");
        //未授权页面
        bean.setUnauthorizedUrl("/noauth");
        return bean;
    }

    //2、DefaultWebSecurityManager
    @Bean(name = "securityManager")
    public DefaultWebSecurityManager getDefaultWebSecurityManager(@Qualifier("userRealm")UserRealm userRealm){
        DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
        //关联UserRealm
        securityManager.setRealm(userRealm);
        return securityManager;
    }

    //1、创建Realm对象
    @Bean
    public UserRealm userRealm(){
        return new UserRealm();
    }

    //整合ShiroDialect shiro-thymeleaf
    @Bean
    public ShiroDialect getShiroDialect(){
        return new ShiroDialect();
    }
}