SpringBoot之Shiro学习笔记

妖狐艹你老母 2023-09-30 09:20 9阅读 0赞

本文基本是转载来的，只做了一点点自我的理解放在里面

狂神说[Shiro][] 视频链接：  
[B站教学视频][B]

**笔记.md文件见**https://github.com/lzh66666/SpringMVC-kuang-/tree/master

## 1、Shiro简介 ##

### 1.1、Shiro 是什么？ ###

*  [Apache][] Shiro 是 Java 的一个安全（权限）框架。
 *  Shiro 可以非常容易的开发出足够好的应用，其不仅可以用在 [JavaSE][] 环境，也可以用在 JavaEE 环境。
 *  Shiro 可以完成：认证、授权、[加密][Link 1]、会话管理、与Web 集成、缓存等。
 *  下载地址
    
     *  官网：http://shiro.apache.org/
     *  github：https://github.com/apache/shiro

### 1.2、有哪些功能？ ###

![image-20200729114647110][]

*  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；即判断用户是否能进行什么操作，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 Management:会话管理，即用户登录后就是一次会话，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JavaSE环境，也可以是Web 环境的
 *  Cryptography:加密，保护数据的安全性，如密码加密存储到数据库，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:记住我，这个是非常常见的功能，即一次登录后，下次再来的话不用登录了

### 1.3、Shiro架构(外部) ###

从外部来看Shiro，即从应用程序角度的来观察如何使用Shiro完成工作

![image-20200729114702566][]

*  Subject：应用代码直接交互的对象是Subject，也就是说Shiro的对外API 核心就是Subject。Subject 代表了当前“用户”，这个用户不一定是一个具体的人，与当前应用交互的任何东西都是Subject，如网络爬虫，机器人等；与Subject 的所有交互都会委托给SecurityManager；Subject 其实是一个门面，SecurityManager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SecurityManager交互；且其管理着所有Subject；可以看出它是Shiro的核心，它负责与Shiro的其他组件进行交互，它相当于SpringMVC中DispatcherServlet的角色
 *  Realm：Shiro从Realm 获取安全数据（如用户、角色、权限），就是说SecurityManager要验证用户身份，那么它需要从Realm 获取相应的用户进行比较以确定用户身份是否合法；也需要从Realm 得到用户相应的角色/权限进行验证用户是否能进行操作；可以把Realm 看成DataSource

### 1.4、Shiro架构(内部) ###

![image-20200729114720578][]

*  Subject：任何可以与应用交互的“用户”；
 *  SecurityManager：相当于SpringMVC中的DispatcherServlet；是Shiro的心脏；所有具体的交互都通过SecurityManager进行控制；它管理着所有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），即什么情况下算用户认证通过了；
 *  Authorizer：授权器、即访问控制器，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哪些功能；
 *  Realm：可以有1 个或多个Realm，可以认为是安全实体数据源，即用于获取安全实体的；可以是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，也可以用在如普通的JavaSE环境  
    CacheManager：缓存控制器，来管理如用户、角色、权限等的缓存的；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提高了一些常见的加密组件用于如密码加密/解密。

## 2、Hello World ##

### 2.1、快速实践 ###

*  查看官方文档：http://shiro.apache.org/tutorial.html
 *  官方的quickstart : https://[github][].com/apache/shiro/tree/master/samples/quickstart/
    
    ![image-20200729115148574][]

1.  创建一个maven父工程，用来学习Shiro,删掉不必要的部分
2.  创建一个普通的Maven子工程：hell-shiro
    
    ![image-20200729120114648][]
3.  根据[官方文档][Link 2]，我们导入Shiro的依赖
    
    ![image-20200729120207730][]
    
    [版本号点击这里][Link 3]
    
        <dependencies>
            <dependency>
                <groupId>org.apache.shiro</groupId>
                <artifactId>shiro-core</artifactId>
                <version>1.5.3</version>
            </dependency>
        
            
            <dependency>
                <groupId>org.slf4j</groupId>
                <artifactId>jcl-over-slf4j</artifactId>
                <version>1.7.26</version>
            </dependency>
            <dependency>
                <groupId>org.slf4j</groupId>
                <artifactId>slf4j-log4j12</artifactId>
                <version>1.7.26</version>
            </dependency>
            <dependency>
                <groupId>log4j</groupId>
                <artifactId>log4j</artifactId>
                <version>1.2.17</version>
            </dependency>
        </dependencies>
4.  相关配置文件
    
     *  log4j.properties——[官网][Link 4]
        
            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
            123456789101112131415161718
     *  shiro.ini——[官网][Link 5]
        
            [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
     *  启动类 Quickstart——[官网][Link 6]
        
            /*
             * Licensed to the Apache Software Foundation (ASF) under one
             * or more contributor license agreements.  See the NOTICE file
             * distributed with this work for additional information
             * regarding copyright ownership.  The ASF licenses this file
             * to you under the Apache License, Version 2.0 (the
             * "License"); you may not use this file except in compliance
             * with the License.  You may obtain a copy of the License at
             *
             *     http://www.apache.org/licenses/LICENSE-2.0
             *
             * Unless required by applicable law or agreed to in writing,
             * software distributed under the License is distributed on an
             * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
             * KIND, either express or implied.  See the License for the
             * specific language governing permissions and limitations
             * under the License.
             */
            
            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.
             * 简单入门Shiro使用API
             *
             * @since 0.9 RC2
             */
            public class Quickstart {
                    
            
                private static final transient Logger log = LoggerFactory.getLogger(Quickstart.class);
            
            
                public static void main(String[] args) {
                    
            
                    // The easiest way to create a Shiro SecurityManager with configured
                    // realms, users, roles and permissions is to use the simple INI config.
                    // We'll do that by using a factory that can ingest a .ini file and
                    // return a SecurityManager instance:
            
                    // Use the shiro.ini file at the root of the classpath
                    // (file: and url: prefixes load from files and urls respectively):
                    // 读取配置文件:
                    Factory<SecurityManager> factory = new IniSecurityManagerFactory("classpath:shiro.ini");
                    SecurityManager securityManager = factory.getInstance();
            
                    // for this simple example quickstart, make the SecurityManager
                    // accessible as a JVM singleton.  Most applications wouldn't do this
                    // and instead rely on their container configuration or web.xml for
                    // webapps.  That is outside the scope of this simple quickstart, so
                    // we'll just do the bare minimum so you can continue to get a feel
                    // for things.
                    SecurityUtils.setSecurityManager(securityManager);
            
                    // Now that a simple Shiro environment is set up, let's see what you can do:
            
                    // get the currently executing user:
                    // 获取当前的用户对象 Subject
                    Subject currentUser = SecurityUtils.getSubject();
            
                    // Do some stuff with a Session (no need for a web or EJB container!!!)
                    //通过当前用户拿到Shiro的Session 可以脱离web存值取值
                    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 + "]");
                    }
            
                    // let's login the current user so we can check against roles and permissions:
                    //判断当前的用户是否被认证
                    if (!currentUser.isAuthenticated()) {
                    
                        //Token 令牌
                        UsernamePasswordToken token = new UsernamePasswordToken("lonestarr", "vespa");
                        //设置记住我
                        token.setRememberMe(true);
                        try {
                    
                            //执行登录操作
                            currentUser.login(token);
                        } catch (UnknownAccountException uae) {
                    
                            log.info("There is no user with username of " + token.getPrincipal());
                        } catch (IncorrectCredentialsException ice) {
                    
                            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):
                    log.info("User [" + currentUser.getPrincipal() + "] logged in successfully.");
            
                    //test a role:
                    // 检查角色
                    if (currentUser.hasRole("schwartz")) {
                    
                        log.info("May the Schwartz be with you!");
                    } else {
                    
                        log.info("Hello, mere mortal.");
                    }
            
                    //test a typed permission (not instance-level)
                    //粗粒度
                    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.");
                    }
            
                    //a (very powerful) Instance Level permission:
                    //细粒度
                    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!
                    //注销
                    currentUser.logout();
            
                    //结束
                    System.exit(0);
                }
            }
        
        ![image-20200729130649625][]
     *  Spring Secutrry都有~（只是换了个名字）
        
            // 获取当前的用户对象 Subject
            Subject currentUser = SecurityUtils.getSubject();
            Session session = currentUser.getSession();
            currentUser.isAuthenticated()
                currentUser.getPrincipal()
                currentUser.hasRole("schwartz")
                currentUser.isPermitted("lightsaber:wield")
                currentUser.logout();
            12345678

## 3、SpringBoot集成 ##

### 3.1、SpringBoot整合Shiro环境搭建 ###

1.  新建一个项目或模块，勾选依赖
    
    ![image-20200729174715011][]
    
    pom.xml
    
        <dependencies>
            
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-thymeleaf</artifactId>
            </dependency>
        
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
        
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
                <exclusions>
                    <exclusion>
                        <groupId>org.junit.vintage</groupId>
                        <artifactId>junit-vintage-engine</artifactId>
                    </exclusion>
                </exclusions>
            </dependency>
        </dependencies>
2.  测试环境是否正常
    
     *  新建一个controller页面
        
            @Controller
            public class MyController {
                    
            
                @RequestMapping({
                    "/","/index"})
                public String toIndex(Model model) {
                    
                    model.addAttribute("msg","hello,Shiro");
                    return "index";
                }
                
                @RequestMapping("/user/add")
                public String add() {
                    
                    return "user/add";
                }
            
                @RequestMapping("/user/update")
                public String update() {
                    
                    return "user/update";
            	}
            }
            12345678910111213141516171819
     *  新建一个index.html页面
        
            <!DOCTYPE html>
            <html lang="en" xmlns:th="http://www.thymeleaf.org">
            <head>
                <meta charset="UTF-8">
                <title>首页</title>
            </head>
            <body>
            <div>
                <h1>首页</h1>
                <p th:text="${msg}"></p>
            
                <hr>
                <a th:href="@{/user/add}">add</a>   | <a th:href="@{/user/update}">update</a>
            </div>
            </body>
            </html>
     *  新建一个add.html页面
        
            <!DOCTYPE html>
            <html lang="en">
            <head>
                <meta charset="UTF-8">
                <title>Title</title>
            </head>
            <body>
                <h1>add</h1>
            </body>
            </html>
            12345678910
     *  新建一个update.html页面
        
            <!DOCTYPE html>
            <html lang="en">
            <head>
                <meta charset="UTF-8">
                <title>Title</title>
            </head>
            <body>
                <h1>update</h1>
            </body>
            </html>
     *  项目结构
        
        ![image-20200729190325307][]
     *  运行截图
        
        ![image-20200729190548307][]
3.  导入shiro整合spring的包——[官网][Link 7],查看最新版本
    
        
        
        
        <dependency>
            <groupId>org.apache.shiro</groupId>
            <artifactId>shiro-spring</artifactId>
            <version>1.5.3</version>
        </dependency>
4.  编写导入配置类
    
     *  编写一个自定义类UserRealm
        
            //自定义的UserRealm
            public class UserRealm extends AuthorizingRealm {
                    
                //授权
                @Override
                protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
                    
                    System.out.println("执行了=>授权doGetAuthorizationInfo");
                    return null;
                }
            
                //认证
                @Override
                protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
                    
                    System.out.println("执行了=>认证doGetAuthorizationInfo");
                    return null;
                }
            }
     *  编写配置ShiroConfig
        
         *  创建realm对象，需要自定义类
         *  DefaultWebSecurityManager
         *  ShiroFilterFactoryBean
        
            @Configuration
            public class ShiroConfig {
                    
            
                //3. shiroFilterFactoryBean
            
                @Bean
                public ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier("getDefaultWebSecurityManager") DefaultWebSecurityManager defaultWebSecurityManager) {
                    
                    ShiroFilterFactoryBean bean = new ShiroFilterFactoryBean();
                    // 设置安全管理器
                    bean.setSecurityManager(defaultWebSecurityManager);
            
                    return bean;
                }
            
                //2. DefaultWebSecurityManager
            
                @Bean
                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，需要自定义类
            
                @Bean
                public UserRealm userRealm() {
                    
                    return new UserRealm();
                }
            }

### 3.2、Shiro实现登录拦截 ###

*  在`ShiroConfig`中的`getShiroFilterFactoryBean`方法中添加如下配置
    
     *  anon： 无需认证就可以访问
     *  authc： 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
    
        Map<String, String> filterMap = new LinkedHashMap<>();
        filterMap.put("/user/add","authc");
        filterMap.put("/user/update","authc");
        bean.setFilterChainDefinitionMap(filterMap);
 *  点击首页的add或者update之后
    
    ![image-20200729191619576][]
 *  添加拦截成功页面
    
     *  登录页面login.html
        
            <!DOCTYPE html>
            <html lang="en">
            <head>
                <meta charset="UTF-8">
                <title>登录页面</title>
            </head>
            <body>
            <h1>登录</h1>
            <hr>
            
            <form action="">
                <p>用户名：<input type="text" name="username"></p>
                <p>密码：<input type="text" name="password"></p>
                <p>密码：<input type="submit"></p>
            </form>
            </body>
            </html>
     *  在MyConfig中添加
        
            @RequestMapping("/toLogin")
            public String toLogin() {
                    
                return "login";
            }
     *  在`ShiroConfig`中的`getShiroFilterFactoryBean`方法中添加如下配置
        
            //设置登录的请求
            bean.setLoginUrl("/toLogin");
 *  拦截成功页面
    
    ![image-20200729192409085][]

### 3.3、Shiro实现用户认证 ###

1.  在`MyController`中编写用户提交表单之后处理
    
        @RequestMapping("/login")
        public String login(String username, String password, Model model) {
              
            //获取一个用户
            Subject subject = SecurityUtils.getSubject();
            // 封装用户的登录数据
            UsernamePasswordToken token = new UsernamePasswordToken(username, password);
        
            try {
              
                subject.login(token);//执行登录的方法，如果没有异常就说明ok了
                return "index";
            } catch (UnknownAccountException e) {
              //用户名不存在
                model.addAttribute("msg","用户名错误");
                return "login";
            } catch (IncorrectCredentialsException e) {
              //密码不存在
                model.addAttribute("msg","密码错误");
                return "login";
            }
        
        }
2.  login.html的修改
    
        <!DOCTYPE html>
        <html lang="en" xmlns:th="http://www.thymeleaf.org">
        <head>
            <meta charset="UTF-8">
            <title>登录页面</title>
        </head>
        <body>
        <h1>登录</h1>
        <hr>
        
        <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>密码：<input type="submit"></p>
        </form>
        </body>
        </html>
3.  用户输入登录信息
    
     *  页面
        
        ![image-20200729220647520][]
     *  控制台
        
        ![image-20200729220926500][]
4.  用户认证编写`UserRealm`中的认证（doGetAuthenticationInfo）
    
        //认证
        @Override
        protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
              
            System.out.println("执行了=>认证doGetAuthorizationInfo");
            // 用户名、密码， 数据中取
            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,"");
        }

### 3.4、Shiro整合Mybatis ###

1.  导入依赖
    
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
        
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.23</version>
        </dependency>
        
        
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
         <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.1.3</version>
        </dependency>
2.  配置文件application.yml的编写
    
        spring:
          datasource:
            username: root
            password: admin
            #?serverTimezone=UTC解决时区的报错
            url: jdbc:mysql://localhost:3306/mybatis?serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8
            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
            
        mybatis:
          type-aliases-package: nuc.ss.pojo
          mapper-locations: classpath:mapper/*.xml
3.  User类的编写
    
        @Data
        @AllArgsConstructor
        @NoArgsConstructor
        public class User {
              
            private int id;
            private String name;
            private String pwd;
        }
4.  UserMapper.xml映射
    
        <?xml version="1.0" encoding="UTF-8" ?>
        <!DOCTYPE mapper
             PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
                "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
        
        <mapper namespace="nuc.ss.mapper.UserMapper">
            
            <select id="queryUserList" resultType="User">
                select * from mybatis.user;
            </select>
        
            <select id="queryUserById" resultType="User">
                select * from mybatis.user where id = #{id};
            </select>
        
            <insert id="addUser" parameterType="User">
                insert into mybatis.user (id, name, pwd) values (#{id},#{name},#{pwd});
            </insert>
        
            <update id="updateUser" parameterType="User">
                update mybatis.user set name=#{name},pwd = #{pwd} where id = #{id};
            </update>
        
            <delete id="deleteUser" parameterType="int">
                delete from mybatis.user where id = #{id}
            </delete>
        </mapper>
5.  UserService接口实现
    
        public interface UserService {
              
        
            public User queryUserByName(String name);
        }
6.  UserServiceImpl业务逻辑
    
        @Service
        public class UserServiceImpl implements UserService {
              
        
            @Autowired
            UserMapper userMapper;
            @Override
            public User queryUserByName(String name) {
              
                return userMapper.queryUserByName(name);
            }
        }
7.  测试环境
    
        @SpringBootTest
        class ShiroSpringbootApplicationTests {
              
        
            @Autowired
            UserService userService;
            @Test
            void contextLoads() {
              
                System.out.println(userService.queryUserByName("狂神"));
            }
        
        }
    
    ![image-20200730121720922][]
8.  `UserRealm`连接真实数据库
    
        //认证
        @Override
        protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
              
            System.out.println("执行了=>认证doGetAuthorizationInfo");
        
            UsernamePasswordToken userToken = (UsernamePasswordToken) token;
            
            // 真实数据库 用户名、密码， 数据中取
            User user = userService.queryUserByName(userToken.getUsername());
        
            if (user == null) {
              //没有这个人
                return null;
            }
        
            // 密码认证，shiro做
            return new SimpleAuthenticationInfo("",user.getPwd(),"");
        }
    
    ![image-20200730180019861][]
9.  断点测试密码加密类型
    
     *  打断点Debug
        
        ![image-20200730182621912][]
     *  默认是`SimpleCredentialsMatcher`加密
        
        ![image-20200730181814293][]
     *  MD5加密——[测试][Link 8]
        
        123456——E10ADC3949BA59ABBE56E057F20F883E
     *  MD5盐值加密
     *  所有加密
        
        ![image-20200730181944253][]

### 3.5、Shiro实现用户授权 ###

1.  `ShiroConfig`中的`getShiroFilterFactoryBean`方法添加认证代码
    
        //授权，正常情况下，没有授权会跳转到为授权页面
        //perms为数据库中的字段名，如果其值为user:add则授权
        filterMap.put("/user/add","perms[user:add]");
        filterMap.put("/user/update","perms[user:update]");
2.  登录之后点击add按钮会弹出如下页面
    
    ![image-20200730195133631][]
3.  添加为授权页面
    
     *  MyController
        
            @RequestMapping("/noauto")
            @ResponseBody
            public String unauthorized() {
                    
                return "未经授权，无法访问此页面";
            }
     *  `ShiroConfig`中的`getShiroFilterFactoryBean`方法中添加
        
            //为授权页面
            bean.setUnauthorizedUrl("/noauto");
4.  再次测试
    
    ![image-20200730195807437][]
    
    ![image-20200730195946692][]
    
    所以需要在UserRealm中为用户进行真正授权
5.  UserRealm类的修改
    
        //自定义的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");
        
                SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
        
                //拿到当前登录的这个对象
                //user对象从认证方法中来的
                Subject subject = SecurityUtils.getSubject();
                User currentUser = (User)subject.getPrincipal();//拿到user对象
        
                //设置当前用户的权限
                //这里的currentUser.getPerms()为获取数据库中Perms字段的值
                info.addStringPermission(currentUser.getPerms());
        
                return info;
            }
        
            //认证
            @Override
            protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
              
                ......
                // 密码认证，shiro做
                return new SimpleAuthenticationInfo(user,user.getPwd(),"");
            }
        }
6.  再次测试
    
    ![image-20200730202810034][]

### 3.6、Shiro整合Thymeleaf ###

1.  shiro-thymeleaf整合包导入——[官网][Link 9]
    
        
        <dependency>
            <groupId>com.github.theborakompanioni</groupId>
            <artifactId>thymeleaf-extras-shiro</artifactId>
            <version>2.0.0</version>
        </dependency>
2.  在ShiroConfig中整合ShiroDialect
    
        // 整合ShiroDialect： 用来整合 Shiro thymeleaf
        @Bean
        public ShiroDialect getShiroDialect() {
              
            return new ShiroDialect();
        }
3.  index.html页面
    
        <!DOCTYPE html>
        <html lang="en" xmlns:th="http://www.thymeleaf.org"
              xmlns:shiro="http://www.thymeleaf.org/thymeleaf-extras-shiro">
        <head>
            <meta charset="UTF-8">
            <title>首页</title>
        </head>
        <body>
        
        <div>
            <h1>首页</h1>
            <p th:text="${msg}"></p>
        
            
            
        
            <div shiro:notAuthenticated>
                <a th:href="@{/toLogin}">登录</a>
            </div>
        
            <hr>
        
            <div shiro:hasPermission="user:add">
                <a th:href="@{/user/add}">add</a>
            </div>
        
            <div shiro:hasPermission="user:update">
                <a th:href="@{/user/update}">update</a>
            </div>
        
        </div>
        </body>
        </html>
4.  页面显示
    
    ![image-20200730205736153][]

### 3.7、所有代码 ###

*  ShiroConfig
    
        package nuc.ss.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;
        
        @Configuration
        public class ShiroConfig {
              
        
            //shiroFilterFactoryBean
        
            @Bean
            public ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier("getDefaultWebSecurityManager") 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： 无需认证就可以访问
                    authc： 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
                 */
        
                //拦截
                Map<String, String> filterMap = new LinkedHashMap<>();
                //filterMap.put("/user/add","authc");
                //filterMap.put("/user/update","authc");
        
        
                //授权，正常情况下，没有授权会跳转到为授权页面
                //perms为数据库中的字段名，如果其值为user:add则授权
                filterMap.put("/user/add","perms[user:add]");
                filterMap.put("/user/update","perms[user:update]");
        
                filterMap.put("/user/*","authc");
        
                bean.setFilterChainDefinitionMap(filterMap);
        
                //设置登录的请求
                bean.setLoginUrl("/toLogin");
        
                //为授权页面
                bean.setUnauthorizedUrl("/noauto");
        
              return bean;
            }
        
            //DefaultWebSecurityManager
        
            @Bean
            public DefaultWebSecurityManager getDefaultWebSecurityManager(@Qualifier("userRealm") UserRealm userRealm) {
              
                DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
        
                // 关联userRealm
                securityManager.setRealm(userRealm);
                return securityManager;
            }
            //创建realm对象，需要自定义类
        
            @Bean
            public UserRealm userRealm() {
              
                return new UserRealm();
            }
        
            // 整合ShiroDialect： 用来整合 Shiro thymeleaf
            @Bean
            public ShiroDialect getShiroDialect() {
              
                return new ShiroDialect();
            }
        }
 *  UserRealm
    
        package nuc.ss.config;
        
        import nuc.ss.pojo.User;
        import nuc.ss.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;
        
        //自定义的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");
        
                SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
        
                //info.addStringPermission("user:add");
        
                //拿到当前登录的这个对象
                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;
            }
        
            //认证
            @Override
            protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
              
                System.out.println("执行了=>认证doGetAuthorizationInfo");
        
                UsernamePasswordToken userToken = (UsernamePasswordToken) token;
        
                // 虚拟用户
                //String name = "root";
                //String password = "123456";
                //if (!userToken.getUsername().equals(name)) {
              
                //    return null;//抛出异常 UnknownAccountException
                //}
        
                // 真实数据库 用户名、密码， 数据中取
                User user = userService.queryUserByName(userToken.getUsername());
        
                if (user == null) {
              //没有这个人
                    return null;
                }
        
                //首页
                //Subject currentSubject = SecurityUtils.getSubject();
                //Session session = currentSubject.getSession();
                //session.setAttribute("loginUser",user);
        
        
                // 密码认证，shiro做
                return new SimpleAuthenticationInfo(user,user.getPwd(),"");
            }
        }
 *  MyController
    
        package nuc.ss.controller;
        
        import org.apache.shiro.SecurityUtils;
        import org.apache.shiro.authc.IncorrectCredentialsException;
        import org.apache.shiro.authc.UnknownAccountException;
        import org.apache.shiro.authc.UsernamePasswordToken;
        import org.apache.shiro.subject.Subject;
        import org.springframework.stereotype.Controller;
        import org.springframework.ui.Model;
        import org.springframework.web.bind.annotation.RequestMapping;
        import org.springframework.web.bind.annotation.ResponseBody;
        
        @Controller
        public class MyController {
              
        
            @RequestMapping({
              "/","/index"})
            public String toIndex(Model model) {
              
                model.addAttribute("msg","hello,Shiro");
                return "index";
            }
        
            @RequestMapping("/user/add")
            public String add() {
              
                return "user/add";
            }
        
            @RequestMapping("/user/update")
            public String update() {
              
                return "user/update";
            }
        
            @RequestMapping("/toLogin")
            public String toLogin() {
              
                return "login";
            }
        
            @RequestMapping("/login")
            public String login(String username, String password, Model model) {
              
                //获取一个用户
                Subject subject = SecurityUtils.getSubject();
                // 封装用户的登录数据
                UsernamePasswordToken token = new UsernamePasswordToken(username, password);
        
                try {
              
                    subject.login(token);//执行登录的方法，如果没有异常就说明ok了
                    return "index";
                } catch (UnknownAccountException e) {
              //用户名不存在
                    model.addAttribute("msg","用户名错误");
                    return "login";
                } catch (IncorrectCredentialsException e) {
              //密码不存在
                    model.addAttribute("msg","密码错误");
                    return "login";
                }
            }
        
            @RequestMapping("/noauto")
            @ResponseBody
            public String unauthorized() {
              
                return "未经授权，无法访问此页面";
            }
        }
 *  pom依赖
    
        <?xml version="1.0" encoding="UTF-8"?>
        <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
            <modelVersion>4.0.0</modelVersion>
            <groupId>nuc.ss</groupId>
            <artifactId>shiro-springboot</artifactId>
            <version>0.0.1-SNAPSHOT</version>
            <name>shiro-springboot</name>
            <description>Demo project for Spring Boot</description>
        
            <properties>
                <java.version>1.8</java.version>
                <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
                <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
                <spring-boot.version>2.3.0.RELEASE</spring-boot.version>
            </properties>
        
            <dependencies>
        
                
        
                
                
                <dependency>
                    <groupId>com.github.theborakompanioni</groupId>
                    <artifactId>thymeleaf-extras-shiro</artifactId>
                    <version>2.0.0</version>
                </dependency>
        
                <dependency>
                    <groupId>org.projectlombok</groupId>
                    <artifactId>lombok</artifactId>
                </dependency>
                <dependency>
                    <groupId>mysql</groupId>
                    <artifactId>mysql-connector-java</artifactId>
                </dependency>
        
                <dependency>
                    <groupId>log4j</groupId>
                    <artifactId>log4j</artifactId>
                    <version>1.2.17</version>
                </dependency>
        
                <dependency>
                    <groupId>com.alibaba</groupId>
                    <artifactId>druid</artifactId>
                    <version>1.1.23</version>
                </dependency>
        
                
                <dependency>
                    <groupId>org.mybatis.spring.boot</groupId>
                    <artifactId>mybatis-spring-boot-starter</artifactId>
                    <version>2.1.3</version>
                </dependency>
        
                
                <dependency>
                    <groupId>org.apache.shiro</groupId>
                    <artifactId>shiro-spring</artifactId>
                    <version>1.5.3</version>
                </dependency>
                
                <dependency>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-thymeleaf</artifactId>
                </dependency>
        
                <dependency>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-web</artifactId>
                </dependency>
        
                <dependency>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-test</artifactId>
                    <scope>test</scope>
                    <exclusions>
                        <exclusion>
                            <groupId>org.junit.vintage</groupId>
                            <artifactId>junit-vintage-engine</artifactId>
                        </exclusion>
                    </exclusions>
                </dependency>
            </dependencies>
        
            <dependencyManagement>
                <dependencies>
                    <dependency>
                        <groupId>org.springframework.boot</groupId>
                        <artifactId>spring-boot-dependencies</artifactId>
                        <version>${spring-boot.version}</version>
                        <type>pom</type>
                        <scope>import</scope>
                    </dependency>
                </dependencies>
            </dependencyManagement>
        
            <build>
                <plugins>
                    <plugin>
                        <groupId>org.apache.maven.plugins</groupId>
                        <artifactId>maven-compiler-plugin</artifactId>
                        <configuration>
                            <source>1.8</source>
                            <target>1.8</target>
                            <encoding>UTF-8</encoding>
                        </configuration>
                    </plugin>
                    <plugin>
                        <groupId>org.springframework.boot</groupId>
                        <artifactId>spring-boot-maven-plugin</artifactId>
                    </plugin>
                </plugins>
            </build>
        
        </project>

## 4、完美的解释 ##

[让 Apache Shiro 保护你的应用][Apache Shiro]

[Shiro]: https://so.csdn.net/so/search?q=Shiro&spm=1001.2101.3001.7020
[B]: https://www.bilibili.com/video/BV1aE41167Tu
[Apache]: https://so.csdn.net/so/search?q=Apache&spm=1001.2101.3001.7020
[JavaSE]: https://so.csdn.net/so/search?q=JavaSE&spm=1001.2101.3001.7020
[Link 1]: https://so.csdn.net/so/search?q=%E5%8A%A0%E5%AF%86&spm=1001.2101.3001.7020
[image-20200729114647110]: https://img-blog.csdnimg.cn/img_convert/3ce49d962f2eacdac704a50aca0c89b6.png
[image-20200729114702566]: https://img-blog.csdnimg.cn/img_convert/f787b563b9e96f3ed1ad85f1b83e79e1.png
[image-20200729114720578]: https://imgconvert.csdnimg.cn/aHR0cHM6Ly9naXRlZS5jb20vbHpoX2dpdGVlL3NwcmluZ2Jvb3RfaW1hZ2UvcmF3L21hc3Rlci9pbWcvaW1hZ2UtMjAyMDA3MjkxMTQ3MjA1NzgucG5n?x-oss-process=image/format,png
[github]: https://so.csdn.net/so/search?q=github&spm=1001.2101.3001.7020
[image-20200729115148574]: https://img-blog.csdnimg.cn/img_convert/97a4ee2f1d82c89ace108174abeee6aa.png
[image-20200729120114648]: https://imgconvert.csdnimg.cn/aHR0cHM6Ly9naXRlZS5jb20vbHpoX2dpdGVlL3NwcmluZ2Jvb3RfaW1hZ2UvcmF3L21hc3Rlci9pbWcvaW1hZ2UtMjAyMDA3MjkxMjAxMTQ2NDgucG5n?x-oss-process=image/format,png
[Link 2]: https://github.com/apache/shiro/blob/master/samples/quickstart/pom.xml
[image-20200729120207730]: https://imgconvert.csdnimg.cn/aHR0cHM6Ly9naXRlZS5jb20vbHpoX2dpdGVlL3NwcmluZ2Jvb3RfaW1hZ2UvcmF3L21hc3Rlci9pbWcvaW1hZ2UtMjAyMDA3MjkxMjAyMDc3MzAucG5n?x-oss-process=image/format,png
[Link 3]: https://mvnrepository.com/artifact/org.apache.shiro/shiro-core
[Link 4]: https://github.com/apache/shiro/blob/master/samples/quickstart/src/main/resources/log4j.properties
[Link 5]: https://github.com/apache/shiro/blob/master/samples/quickstart/src/main/resources/shiro.ini
[Link 6]: https://github.com/apache/shiro/blob/master/samples/quickstart/src/main/java/Quickstart.java
[image-20200729130649625]: https://imgconvert.csdnimg.cn/aHR0cHM6Ly9naXRlZS5jb20vbHpoX2dpdGVlL3NwcmluZ2Jvb3RfaW1hZ2UvcmF3L21hc3Rlci9pbWcvaW1hZ2UtMjAyMDA3MjkxMzA2NDk2MjUucG5n?x-oss-process=image/format,png
[image-20200729174715011]: https://imgconvert.csdnimg.cn/aHR0cHM6Ly9naXRlZS5jb20vbHpoX2dpdGVlL3NwcmluZ2Jvb3RfaW1hZ2UvcmF3L21hc3Rlci9pbWcvaW1hZ2UtMjAyMDA3MjkxNzQ3MTUwMTEucG5n?x-oss-process=image/format,png
[image-20200729190325307]: https://img-blog.csdnimg.cn/img_convert/713ed044e8ac5806dfc3e848200570c1.png
[image-20200729190548307]: https://imgconvert.csdnimg.cn/aHR0cHM6Ly9naXRlZS5jb20vbHpoX2dpdGVlL3NwcmluZ2Jvb3RfaW1hZ2UvcmF3L21hc3Rlci9pbWcvaW1hZ2UtMjAyMDA3MjkxOTA1NDgzMDcucG5n?x-oss-process=image/format,png
[Link 7]: https://mvnrepository.com/artifact/org.apache.shiro/shiro-spring
[image-20200729191619576]: https://imgconvert.csdnimg.cn/aHR0cHM6Ly9naXRlZS5jb20vbHpoX2dpdGVlL3NwcmluZ2Jvb3RfaW1hZ2UvcmF3L21hc3Rlci9pbWcvaW1hZ2UtMjAyMDA3MjkxOTE2MTk1NzYucG5n?x-oss-process=image/format,png
[image-20200729192409085]: https://img-blog.csdnimg.cn/img_convert/52e7595d9d915f79f03d856eeaddbf4b.png
[image-20200729220647520]: https://img-blog.csdnimg.cn/img_convert/1f82aac59a7467ba71183c6e278642d2.png
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[Link 8]: http://tool.chinaz.com/tools/md5.aspx
[image-20200730181944253]: https://imgconvert.csdnimg.cn/aHR0cHM6Ly9naXRlZS5jb20vbHpoX2dpdGVlL3NwcmluZ2Jvb3RfaW1hZ2UvcmF3L21hc3Rlci9pbWcvaW1hZ2UtMjAyMDA3MzAxODE5NDQyNTMucG5n?x-oss-process=image/format,png
[image-20200730195133631]: https://img-blog.csdnimg.cn/img_convert/64d5989c4d462352c56181fae866dbfc.png
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[image-20200730202810034]: https://img-blog.csdnimg.cn/img_convert/9a262dbd69c78df1fb017e519864210b.png
[Link 9]: https://mvnrepository.com/artifact/com.github.theborakompanioni/thymeleaf-extras-shiro
[image-20200730205736153]: https://img-blog.csdnimg.cn/img_convert/5ca2f563fcb9bc51c1cb30acc4e26fba.png
[Apache Shiro]: https://www.infoq.cn/article/apache-shiro/?itm_source=infoq_en&itm_medium=link_on_en_item&itm_campaign=item_in_other_langs