Spring Boot学习之Shiro

文章目录

  • 零 全部源码地址
  • 一 Shiro简介
    • 1.1 Shiro功能
    • 1.2 Shiro架构(外部视角)
    • 1.3 Shiro架构(内部视角)
  • 二 Shiro快速入门
    • 2.1 演示代码&部分源码解读
  • 三 Spring Boot集成Shio
    • 3.0 准备操作
    • 3.1 整合Shiro
    • 3.2 页面拦截实现
    • 3.3 登录认证
    • 3.4 整合数据库
    • 3.5 用户授权操作
    • 3.6 Shiro授权
    • 3.7 整合thymeleaf
    • 3.8 效果展示


零 全部源码地址

  • 全部源码

一 Shiro简介

  • Apache Shiro 是一个Java 的安全(权限)框架。
  • Shiro可以完成,认证,授权,加密,会话管理,Web集成,缓存等。
  • Shiro官网

1.1 Shiro功能

Spring Boot学习之Shiro_第1张图片

功能 说明
Authentication 身份认证、登录,验证用户是不是拥有相应的身份;
Authorization 授权,即权限验证,验证某个已认证的用户是否拥有某个权限,即判断用户能否进行某些操作,如:验证某个用户是否拥有某个角色,或者细粒度的验证某个用户对某个资源是否具有某个权限
Session Manager 会话管理,即用户登录后就是第一次会话,在没有退出之前,它的所有信息都在会话中;会话可以是普通的JavaSE环境,也可以是Web环境;
Cryptography 加密,保护数据的安全性,如密码加密存储到数据库中,而不是明文存储;
Web Support Web支持,可以非常容易的集成到Web环境;
Caching 缓存,比如用户登录后,其用户信息,拥有的角色、权限不必每次去查,这样可以提高效率
Concurrency Shiro支持多线程应用的并发验证,即,如在一个线程中开启另一个线程,能把权限自动的传播过去
Testing 提供测试支持
Run As 允许一个用户假装为另一个用户(如果他们允许)的身份进行访问
Remember Me 记住登录功能,即一次登录后,下次再来的话不用登录

1.2 Shiro架构(外部视角)

  • 从应用程序角度来观察如何使用shiro完成工作
    Spring Boot学习之Shiro_第2张图片

  • subject:

    • 应用代码直接交互的对象是Subject【Shiro的对外API核心就是Subject】
    • 与当前应用交互的任何东西都是Subject,与Subject的所有交互都会委托给SecurityManager
    • Subject其实是一个门面,SecurityManageer 才是实际的执行者
  • SecurityManager

    • 安全管理器,即所有与安全有关的操作都会与SercurityManager交互,并且它管理着所有的Subject。
    • 它是Shiro的核心,它负责与Shiro的其他组件进行交互,它相当于SpringMVC的DispatcherServlet的角色
  • Realm

    • Shiro从Realm获取安全数据(如用户,角色,权限)
    • SecurityManager 要验证用户身份,需要从Realm 获取相应的用户进行比较,来确定用户的身份是否合法;也需要从Realm得到用户相应的角色、权限,进行验证用户的操作是否能够进行
    • 可以把Realm看成DataSource

1.3 Shiro架构(内部视角)

Spring Boot学习之Shiro_第3张图片

组件名称 说明
Subject 任何可以与应用交互的 ‘用户’
Security Manager Shiro的心脏,所有具体的交互都通过Security Manager进行控制,它管理者所有的Subject,且负责进行认证,授权,会话,及缓存的管理。
Authenticator 负责Subject认证,是一个扩展点,可以自定义实现;可以使用认证策略(Authentication Strategy)
Authorizer 授权器访问控制器】用来决定主体是否有权限进行相应的操作【即控制着用户能访问应用中的那些功能】
Realm 可以有一个或者多个的realm,可以认为是安全实体数据源【即用于获取安全实体的,可以用JDBC实现,也可以是内存实现等等,由用户提供;所以一般在应用中都需要实现自己的realm】
SessionManager 管理Session生命周期的组件,而Shiro并不仅仅可以用在Web环境,也可以用在普通的JavaSE环境中
CacheManager 缓存控制器,来管理如用户,角色,权限等缓存的;因为这些数据基本上很少改变,放到缓存中后可以提高访问的性能;
Cryptography 密码模块,Shiro 提供了一些常见的加密组件用于密码加密,解密

二 Shiro快速入门

2.1 演示代码&部分源码解读

  • 官方10分钟快速入门
  1. 创建一个maven工程删掉不必要的东西
    Spring Boot学习之Shiro_第4张图片

  2. 根据官方文档,我们来导入Shiro的依赖

    <dependencies>
        <dependency>
            <groupId>org.apache.shirogroupId>
            <artifactId>shiro-coreartifactId>
            <version>1.4.1version>
        dependency>
    
        
        <dependency>
            <groupId>org.slf4jgroupId>
            <artifactId>jcl-over-slf4jartifactId>
            <version>1.7.21version>
        dependency>
        <dependency>
            <groupId>org.slf4jgroupId>
            <artifactId>slf4j-log4j12artifactId>
            <version>1.7.21version>
        dependency>
        <dependency>
            <groupId>log4jgroupId>
            <artifactId>log4jartifactId>
            <version>1.2.17version>
        dependency>
    dependencies>
    
  3. 编写Shiro配置

    • log4j.properties
    log4j.rootLogger=INFO, stdout
    
    log4j.appender.stdout=org.apache.log4j.ConsoleAppender
    log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
    log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - %m %n
    
    # General Apache libraries
    log4j.logger.org.apache=WARN
    
    # Spring
    log4j.logger.org.springframework=WARN
    
    # Default Shiro logging
    log4j.logger.org.apache.shiro=INFO
    
    # Disable verbose logging
    log4j.logger.org.apache.shiro.util.ThreadContext=WARN
    log4j.logger.org.apache.shiro.cache.ehcache.EhCache=WARN
    
    • shiro.ini
    [users]
    # user 'root' with password 'secret' and the 'admin' role
    root = secret, admin
    # user 'guest' with the password 'guest' and the 'guest' role
    guest = guest, guest
    # user 'presidentskroob' with password '12345' ("That's the same combination on
    # my luggage!!!" ;)), and role 'president'
    presidentskroob = 12345, president
    # user 'darkhelmet' with password 'ludicrousspeed' and roles 'darklord' and 'schwartz'
    darkhelmet = ludicrousspeed, darklord, schwartz
    # user 'lonestarr' with password 'vespa' and roles 'goodguy' and 'schwartz'
    lonestarr = vespa, goodguy, schwartz
    
    # -----------------------------------------------------------------------------
    # Roles with assigned permissions
    #
    # Each line conforms to the format defined in the
    # org.apache.shiro.realm.text.TextConfigurationRealm#setRoleDefinitions JavaDoc
    # -----------------------------------------------------------------------------
    [roles]
    # 'admin' role has all permissions, indicated by the wildcard '*'
    admin = *
    # The 'schwartz' role can do anything (*) with any lightsaber:
    schwartz = lightsaber:*
    # The 'goodguy' role is allowed to 'drive' (action) the winnebago (type) with
    # license plate 'eagle5' (instance specific id)
    goodguy = winnebago:drive:eagle5
    
  4. 编写QuickStrat

    import org.apache.shiro.SecurityUtils;
    import org.apache.shiro.authc.*;
    import org.apache.shiro.config.IniSecurityManagerFactory;
    import org.apache.shiro.mgt.SecurityManager;
    import org.apache.shiro.session.Session;
    import org.apache.shiro.subject.Subject;
    import org.apache.shiro.util.Factory;
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    
    
    /**
     * Simple Quickstart application showing how to use Shiro's API.
     * @since 0.9 RC2
     */
    public class Quickstart {
    
        private static final transient Logger log = LoggerFactory.getLogger(Quickstart.class);	
        public static void main(String[] args) {
            Factory<SecurityManager> factory = new IniSecurityManagerFactory("classpath:shiro.ini");
            SecurityManager securityManager = factory.getInstance();
            //设置单例模式
            SecurityUtils.setSecurityManager(securityManager);
    
            /*
                以下是核心代码
             */
            // 获取当前的对象 subject
            Subject currentUser = SecurityUtils.getSubject();
    
            // 通过当前对象拿到 session
            Session session = currentUser.getSession();
            session.setAttribute("someKey", "aValue");
            String value = (String) session.getAttribute("someKey");
            if (value.equals("aValue")) {
                log.info("Retrieved the correct value! [" + value + "]");
            }
    
            // 判断当前的用户是否被认证
            if (!currentUser.isAuthenticated()) {
                //token令牌 没有获取,随机
                UsernamePasswordToken token = new UsernamePasswordToken("lonestarr", "vespa");
                token.setRememberMe(true);//设置记住功能
                try {
                    currentUser.login(token);//执行登录操作~
                } catch (UnknownAccountException uae) {//用户名不存在
                    log.info("There is no user with username of " + token.getPrincipal());
                } catch (IncorrectCredentialsException ice) {//密码错误
                    log.info("Password for account " + token.getPrincipal() + " was incorrect!");
                } catch (LockedAccountException lae) {//
                    log.info("The account for username " + token.getPrincipal() + " is locked.  " +
                            "Please contact your administrator to unlock it.");
                }
                // ... catch more exceptions here (maybe custom ones specific to your application?
                catch (AuthenticationException ae) {
                    //unexpected condition?  error?
                }
            }
    
            //say who they are:
            //print their identifying principal (in this case, a username):
            //获取当前用户的认证码——存取信息
            log.info("User [" + currentUser.getPrincipal() + "] logged in successfully.");
    
            //test a role:检测角色
            if (currentUser.hasRole("schwartz")) {
                log.info("May the Schwartz be with you!");
            } else {
                log.info("Hello, mere mortal.");
            }
            //粗粒度
            //test a typed permission (not instance-level):检测权限
            if (currentUser.isPermitted("lightsaber:wield")) {
                log.info("You may use a lightsaber ring.  Use it wisely.");
            } else {
                log.info("Sorry, lightsaber rings are for schwartz masters only.");
            }
            //细粒度
            //a (very powerful) Instance Level permission:是否拥有更高级的权限
            if (currentUser.isPermitted("winnebago:drive:eagle5")) {
                log.info("You are permitted to 'drive' the winnebago with license plate (id) 'eagle5'.  " +
                        "Here are the keys - have fun!");
            } else {
                log.info("Sorry, you aren't allowed to drive the 'eagle5' winnebago!");
            }
    
            //all done - log out!退出
            currentUser.logout();
            // 结束
            System.exit(0);
        }
    }
    
    
  5. 测试结果

    2023-01-27 17:35:00,334 INFO [org.apache.shiro.session.mgt.AbstractValidatingSessionManager] - Enabling session 				validation scheduler... 
    2023-01-27 17:35:00,712 INFO [Quickstart] - Retrieved the correct value! [aValue] 
    2023-01-27 17:35:00,713 INFO [Quickstart] - User [lonestarr] logged in successfully. 
    2023-01-27 17:35:00,713 INFO [Quickstart] - May the Schwartz be with you! 
    2023-01-27 17:35:00,713 INFO [Quickstart] - You may use a lightsaber ring.  Use it wisely. 
    2023-01-27 17:35:00,714 INFO [Quickstart] - You are permitted to 'drive' the winnebago with license plate (id) 	'eagle5'.  Here are the keys - have fun! 
    进程已结束,退出代码0
    

三 Spring Boot集成Shio

3.0 准备操作

  1. 搭建一个SpringBoot项目、选中web模块 Spring Boot学习之Shiro_第5张图片

  2. 导入Maven依赖 thymeleaf

    
    <dependency>
         <groupId>org.thymeleafgroupId>
         <artifactId>thymeleaf-spring5artifactId>
     dependency>
     <dependency>
         <groupId>org.thymeleaf.extrasgroupId>
         <artifactId>thymeleaf-extras-java8timeartifactId>
     dependency>
    
  3. 编写一个页面 index.html
    Spring Boot学习之Shiro_第6张图片

    DOCTYPE html>
    <html lang="en"xmlns:th="http://www.thymeleaf.org">
    <head>
    	<meta charset="UTF-8">
    	<title>Titletitle>
    head>
    <body>
    	<h1>首页h1>
    	<p th:text="${msg}">p>
    body>
    html>
    
  4. 编写controller进行访问测试

    import org.springframework.stereotype.Controller;
    import org.springframework.ui.Model;
    import org.springframework.web.bind.annotation.RequestMapping;
    @Controller
    public class MyController {
    	@RequestMapping({"/","/index"})
    	public String toIndex(Model model){
    	model.addAttribute("msg","hello,Shiro");
    		return "index";
    	}
    }
    

3.1 整合Shiro

  1. 导入Shiro 和 spring整合的依赖

    
     
     
     <dependency>
         <groupId>org.apache.shirogroupId>
         <artifactId>shiro-springartifactId>
         <version>1.9.1version>
     dependency>
    
  2. 编写Shiro 配置类 【config包下】

    import org.springframework.context.annotation.Configuration;
    //声明为配置类
    @Configuration
    public class ShiroConfig {
    	//创建 ShiroFilterFactoryBean
    	
    	//创建 DefaultWebSecurityManager
    	
    	//创建 realm 对象
    }
    
  3. 先创建一个 realm 对象

    • 需要自定义一个 realm 的类,用来编写一些查询的方法,或者认证与授权的逻辑
    import org.apache.shiro.authc.AuthenticationException;
    import org.apache.shiro.authc.AuthenticationInfo;
    import org.apache.shiro.authc.AuthenticationToken;
    import org.apache.shiro.authz.AuthorizationInfo;
    import org.apache.shiro.realm.AuthorizingRealm;
    import org.apache.shiro.subject.PrincipalCollection;
    //自定义Realm
    public class UserRealm extends AuthorizingRealm {
    	//执行授权逻辑
    	@Override
    	protected AuthorizationInfo
    	doGetAuthorizationInfo(PrincipalCollection principals) {
    		System.out.println("执行了=>授权逻辑PrincipalCollection");
    		return null;
    	}
    	//执行认证逻辑
    	@Override
    	protected AuthenticationInfo
    	doGetAuthenticationInfo(AuthenticationToken token) throws
    	AuthenticationException {
    		System.out.println("执行了=>认证逻辑AuthenticationToken");
    		return null;
    	}
    }
    
  4. 将这个类注册到Bean中【ShiroConfig中】

    @Configuration
    public class ShiroConfig {
    	//创建 ShiroFilterFactoryBean
    	//创建 DefaultWebSecurityManager
    	//创建 realm 对象
    	@Bean
    	public UserRealm userRealm(){
    		return new UserRealm();
    	}
    }
    
  5. 创建 DefaultWebSecurityManager

    //创建 ShiroFilterFactoryBean
    @Bean
    public ShiroFilterFactoryBean
    getShiroFilterFactoryBean(@Qualifier("securityManager")DefaultWebSecurityManager securityManager){
    	ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();
    	//设置安全管理器
    	shiroFilterFactoryBean.setSecurityManager(securityManager);
    	return shiroFilterFactoryBean;
    }
    
  6. ShiroConfig全部代码

    //声明为配置类
    @Configuration
    public class ShiroConfig {
    	//创建 ShiroFilterFactoryBean
    	@Bean
    	public ShiroFilterFactoryBean
    	getShiroFilterFactoryBean(@Qualifier("securityManager")DefaultWebSecurityManager securityManager){
    		ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();
    		//设置安全管理器
    		shiroFilterFactoryBean.setSecurityManager(securityManager);
    		return shiroFilterFactoryBean;
    	}
    	//创建 DefaultWebSecurityManager
    	@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 对象
    	@Bean
    	public UserRealm userRealm(){
    		return new UserRealm();
    	}
    }
    

3.2 页面拦截实现

  1. 编写两个页面、在templates目录下新建一个 user 目录 add.html update.html

    <body>
    	<h1>addh1>
    body>
    
    <body>
    	<h1>updateh1>
    body>
    
  2. 编写跳转到页面的controller

    @RequestMapping("/user/add")
    public String toAdd(){
    	return "user/add";
    }
    @RequestMapping("/user/update")
    public String toUpdate(){
    	return "user/update";
    }
    
  3. 在index页面上,增加跳转链接

    <a th:href="@{/user/add}">adda> 
    <hr/> 
    <a th:href="@{/user/update}">updatea>
    
  4. 添加Shiro的内置过滤器

    @Bean
    public ShiroFilterFactoryBean
    getShiroFilterFactoryBean(@Qualifier("securityManager")DefaultWebSecurityManager securityManager){
    	ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();
    	//设置安全管理器
    	shiroFilterFactoryBean.setSecurityManager(securityManager);
    	/*
    	添加Shiro内置过滤器,常用的有如下过滤器:
    	anon: 无需认证就可以访问
    	authc: 必须认证才可以访问
    	user: 如果使用了记住我功能就可以直接访问
    	perms: 拥有某个资源权限才可以访问
    	role: 拥有某个角色权限才可以访问
    	*/
    	Map<String,String> filterMap = new LinkedHashMap<String, String>();
    	filterMap.put("/user/add","authc");
    	filterMap.put("/user/update","authc");
    	shiroFilterFactoryBean.setFilterChainDefinitionMap(filterMap);
    	return shiroFilterFactoryBean;
    }
    
  5. 编写自定义Login页面

    DOCTYPE html>
    <html lang="en">
        <head>
            <meta charset="UTF-8">
            <title>logintitle>
        head>
        <body>
            <p th:text="${msg}" style="color: red">p>
            <form th:action="@{/login}">
                <p>用户名:<input type="text" name="username">p>
                <p>密码:<input type="text" name="password">p>
                <p>
                    <button type="submit">登录button>
                p>
            form>
        body>
    html>
    
  6. 编写跳转的controller

    @RequestMapping("/toLogin")
    public String toLogin(){
    	return "login";
    }
    
  7. 在shiro中配置

     //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:无需认证既可以访问
        author:必须认证了才能访问
        user:必须拥有 记住我 功能才能用
        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
    
        //filterMap.put("/user/add","authc");
        // filterMap.put("/user/update","authc");
         */
        filterMap.put("/user/*","authc");
        bean.setFilterChainDefinitionMap(filterMap);
        //设置登录的页面
        bean.setLoginUrl("/toLogin");
    
        return bean;
    }
    
    

3.3 登录认证

  1. 编写一个登录的controller

    //登录操作
    @RequestMapping("/login")
    public String login(String username,String password,Model model){
    	//使用shiro,编写认证操作
    	//1. 获取Subject
    	Subject subject = SecurityUtils.getSubject();
    	//2. 封装用户的数据
    	UsernamePasswordToken token = new UsernamePasswordToken(username,password);
    	//3. 执行登录的方法,只要没有异常就代表登录成功!
    	try {
    		subject.login(token); //登录成功!返回首页
    		return "index";
    	} catch (UnknownAccountException e) { //用户名不存在
    		model.addAttribute("msg","用户名不存在");
    		return "login";
    	} catch (IncorrectCredentialsException e) { //密码错误
    		model.addAttribute("msg","密码错误");
    		return "login";
    	}
    }
    
  2. 在前端修改对应的信息输出或者请求

    • 登录页面增加一个 msg
    <p style="color:red;" th:text="${msg}">p>
    
    • 给表单增加一个提交地址
    <form th:action="@{/login}">
    	<p>用户名: <input type="text" name="username">p>
    	<p>密码: <input type="text" name="password">p>
    	<p> <input type="submit"> p>
    form>
    
  3. 在 UserRealm 中编写用户认证的判断逻辑

    //执行认证逻辑
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationTokentoken) throws AuthenticationException {
    	System.out.println("执行了=>认证逻辑AuthenticationToken");
    	//假设数据库的用户名和密码
    	String name = "root";
    	String password = "123456";
    	//1.判断用户名
    	UsernamePasswordToken userToken = (UsernamePasswordToken)token;
    	if (!userToken.getUsername().equals(name)){
    		//用户名不存在
    		return null; //shiro底层就会抛出 UnknownAccountException
    	}
    	//2. 验证密码,我们可以使用一个AuthenticationInfo实现类
    	SimpleAuthenticationInfo
    	// shiro会自动帮我们验证!重点是第二个参数就是要验证的密码!
    	return new SimpleAuthenticationInfo("", password, "");
    }
    

3.4 整合数据库

  1. 导入Mybatis相关依赖

    
    <dependency>
        <groupId>mysqlgroupId>
        <artifactId>mysql-connector-javaartifactId>
    dependency>
    
    <dependency>
        <groupId>log4jgroupId>
        <artifactId>log4jartifactId>
        <version>1.2.17version>
    dependency>
    
    
    <dependency>
        <groupId>com.alibabagroupId>
        <artifactId>druidartifactId>
        <version>1.2.13-SNSAPSHOTversion>
    dependency>
    
  2. 编写配置文件-连接配置 application.yml

    spring:
      datasource:
        username: root
        password: xxxx
        url: jdbc:mysql://localhost:3306/mybatis?useSSL=true&useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC
        driver-class-name: com.mysql.cj.jdbc.Driver
        type: com.alibaba.druid.pool.DruidDataSource
    
    
        #Spring Boot 默认是不注入这些属性值的,需要自己绑定
        #druid 数据源专有配置
        initialSize: 5
        minIdle: 5
        maxActive: 20
        maxWait: 60000
        timeBetweenEvictionRunsMillis: 60000
        minEvictableIdleTimeMillis: 300000
        validationQuery: SELECT 1 FROM DUAL
        testWhileIdle: true
        testOnBorrow: false
        testOnReturn: false
        poolPreparedStatements: true
    
        #配置监控统计拦截的filters,stat:监控统计、log4j:日志记录、wall:防御sql注入
        #如果允许时报错 java.lang.ClassNotFoundException:org.apache.log4j.Priority
        #则导入 log4j 依赖即可,Maven 地址:https://mvnrepository.com/artifact/log4j/log4j
        filters: stat,wall,log4j
        maxPoolPreparedStatementPerConnectionSize: 20
        useGlobalDataSourceStat: true
        connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500
    
  3. 编写mybatis的配置

    #别名配置
    mybatis.type-aliases-package=com.yang.pojo
    mybatis.mapper-locations=classpath:mapper/*.xml
    
  4. 编写实体类,引入Lombok

    <dependency>
        <groupId>org.projectlombokgroupId>
        <artifactId>lombokartifactId>
    dependency>
    
    import lombok.AllArgsConstructor;
    import lombok.Data;
    import lombok.NoArgsConstructor;
    import org.apache.ibatis.type.Alias;
    
    /**
     * @author 缘友一世
     * date 2022/9/17-9:43
     */
    @Data
    @NoArgsConstructor
    @AllArgsConstructor
    @Alias("User")
    public class User {
        private int id;
        private String name;
        private String pwd;
        private String perms;
    }
    
  5. 编写Mapper接口

    import com.yang.pojo.User;
    import org.apache.ibatis.annotations.Mapper;
    import org.springframework.stereotype.Repository;
    
    /**
     * @author 缘友一世
     * date 2022/9/17-9:44
     */
    @Repository
    @Mapper
    public interface UserMapper {
        public User queryUserByName(String name);
    }
    
    
  6. 编写Mapper配置文件

    
    DOCTYPE mapper
            PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
            "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
    <mapper namespace="com.yang.mapper.UserMapper">
        <select id="queryUserByName" parameterType="String"
                resultType="User">
            select * from user where name = #{name}
        select>
    mapper>
    
    
  7. 编写UserService 层

    import com.yang.pojo.User;
    
    /**
     * @author 缘友一世
     * date 2022/9/17-9:49
     */
    public interface UserService {
        public User queryUserByName(String name);
    }
    
    
    import com.yang.mapper.UserMapper;
    import com.yang.pojo.User;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Service;
    
    /**
     * @author 缘友一世
     * date 2022/9/17-9:51
     */
    @Service
    public class UserServiceImpl implements UserService{
    
        @Autowired
        UserMapper userMapper;
        @Override
        public User queryUserByName(String name) {
            return userMapper.queryUserByName(name);
        }
    }
    
    
  8. 测试

    import com.yang.service.UserService;
    import com.yang.service.UserServiceImpl;
    import org.junit.jupiter.api.Test;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.boot.test.context.SpringBootTest;
    
    @SpringBootTest
    class ShiroSpringbootApplicationTests {
        @Autowired
        UserServiceImpl userService;
    
        @Test
        void contextLoads() {
            System.out.println(userService.queryUserByName("小明"));
        }
    
    }
    

    Spring Boot学习之Shiro_第7张图片

  9. 改造UserRealm

    • 连接到数据库进行真实的操作
    import com.yang.pojo.User;
    import com.yang.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 缘友一世
     * date 2022/9/16-21:08
     */
    //自定义UserRealm
    public class UserRealm extends AuthorizingRealm {
        @Autowired UserService userService;
        //授权
        @Override
        protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
            System.out.println("执行了=>授权doGetAuthorizationInfo");
            //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");//硬编码
    
            //拿到当前登录的这个对象
            Subject subject = SecurityUtils.getSubject();
            User currentPrincipal = (User)subject.getPrincipal();//拿到user对象
            //设置当前用户的权限,从数据库中查询而来
            info.addStringPermission(currentPrincipal.getPerms());
            return info;
        }
        //认证
        @Override
        protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
            System.out.println("执行了=>认证doGetAuthorizationInfo");
            /*用户名 密码 数据获取
            String name="root";
            String password="123456";
            UsernamePasswordToken userToken=(UsernamePasswordToken) token;
    
            if(!userToken.getUsername().equals(name)) {
                return null;//抛出异常 UnknownAccountException
            }
            //密码认证,shiro做
            return new SimpleAuthenticationInfo("",password,"");
            */
    
            UsernamePasswordToken userToken=(UsernamePasswordToken) token;
            //连接真实数据库
            User user = userService.queryUserByName(userToken.getUsername());
            if(user==null) {
                return null;//抛出异常 UnknownAccountException
            }
            //为了完美,我们在用户登录后应该把信息放到Session中,我们完善下!在执行认证逻辑时候,加入session
            Subject currentSubject = SecurityUtils.getSubject();
            Session session = currentSubject.getSession();
            session.setAttribute("loginUser",user);
            //第一个参数类型principal 当事人;首要的;最主要的 将user对象传递给上面的授权操作
            return new SimpleAuthenticationInfo(user,user.getPwd(),"");
        }
    }
    
    

3.5 用户授权操作

  • 使用shiro的过滤器来拦截请求
  1. 在 ShiroFilterFactoryBean 中添加一个过滤器
    //授权过滤器
    filterMap.put("/user/add","perms[user:add]"); //大家记得注意顺序!
    
  • 当我们实现权限拦截后,shiro会自动跳转到未授权的页面
  1. 配置一个未授权的提示的页面,增加一个controller提示

    @RequestMapping("/noauth")
    @ResponseBody
    public String noAuth(){
    	return "未经授权不能访问此页面";
    }
    
  2. 在shiroFilterFactoryBean 中配置一个未授权的请求页面

    shiroFilterFactoryBean.setUnauthorizedUrl("/noauth");
    

3.6 Shiro授权

  • 在UserRealm 中添加授权的逻辑,增加授权的字符串
    //授权
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        System.out.println("执行了=>授权doGetAuthorizationInfo");
        //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");//硬编码
    
        //拿到当前登录的这个对象
        Subject subject = SecurityUtils.getSubject();
        User currentPrincipal = (User)subject.getPrincipal();//拿到user对象
        //设置当前用户的权限,从数据库中查询而来
        info.addStringPermission(currentPrincipal.getPerms());
        return info;
    }
    
  • 在过滤器中,将 update 请求也进行权限拦截下
    //拦截
    LinkedHashMap<String, String> filterMap = new LinkedHashMap<>();
    //授权 正常情况下,没有授权会跳转到未授权页面
    filterMap.put("/user/add","perms[user:add]");
    filterMap.put("/user/update","perms[user:update]");
    

3.7 整合thymeleaf

  1. 添加maven依赖
     
            <dependency>
                <groupId>com.github.theborakompanionigroupId>
                <artifactId>thymeleaf-extras-shiroartifactId>
                <version>2.1.0version>
            dependency>
    
  2. 配置一个shiro的Dialect ,在shiro的配置中增加一个Bean
     //配置ShiroDialect:方言,用于整合thymeleaf和shiro
        // 用于 thymeleaf 和 shiro 标签配合使用
        @Bean
        public ShiroDialect getShiroDialect(){
            return new ShiroDialect();
        }
    
  3. 修改前端的配置
    <div shiro:hasPermission="user:add">
    	<a th:href="@{/user/add}">adda>
    div>
    <div shiro:hasPermission="user:update">
    	<a th:href="@{/user/update}">updatea>
    div>
    
  4. 在执行认证逻辑时候,加入session
     //为了完美,在用户登录后应该把信息放到Session中,我们完善下!在执行认证逻辑时候,加入session
     Subject currentSubject = SecurityUtils.getSubject();
     Session session = currentSubject.getSession();
     session.setAttribute("loginUser",user);
    
  5. 前端从session中获取,然后用来判断是否显示登录
    <p th:if="${session.loginUser==null}">
    	<a th:href="@{/toLogin}">登录a>
    p>
    

3.8 效果展示

Spring Boot学习之Shiro_第8张图片
Spring Boot学习之Shiro_第9张图片

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