文章目录
- 演示GIF
 - 一、Shiro简介
 - 
- 1.什么是Shiro
 - 2.有哪些功能
 - 3.Shiro架构(外部)
 - 4.Shiro架构(内部)
 
 - 二、快速实践
 - 
- 项目搭建
 - 1.数据库
 - 2.实体类
 - 3.mapper接口
 - 4.mapper.xml
 - 5.Service接口
 - 6.ServiceImpl实现类
 - 7.controller
 - 8.config配置
 - 
- 1.ShiroConfig
 - 2.UserRealm
 
 
 - 三、前端
 - 
- 1.templates文件
 - 
- 1.index.html
 - 2.login.html
 - 3.user文件
 - 
- 1.add.html
 - 2.update.html
 
 
 
 - 四、pom文件
 
演示GIF

一、Shiro简介
1.什么是Shiro
- .ApacheShiro 是一个Java的安全(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,会话管理,Web集成,缓存等。
 - 下载地址: http://shiro.apache.org/

 
2.有哪些功能

- 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 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
 
3.Shiro架构(外部)
从外部来看Shiro,即从应用程序角度来观察如何使用shiro完成工作:
 
- subject: I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代表了当前的用户,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, 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,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的DispatcherServlet的角色
 - Realm: ShiroARealm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,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;
 
4.Shiro架构(内部)

- Subject:任何可以与应用交互的’用户’;
 - Security Manager:相当于SpringMVC中的DispatcherServlet;是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(AuthenticationStrategy) ,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提高了一些常见的加密组件用于密码加密,解密等
 
查看官网文档: http://shiro.apache.org/tutorial.html
官方的quickstart: https://github.com/apache/shiro/tree/master/samples/quickstart/
 1.创建一个maven父工程,用于学习Shiro,删掉不必要的东西
 2.创建一个普通的Maven子工程: shiro-01-helloworld
 3.根据官方文档,我们来导入Shiro的依赖
<dependencies>
        <dependency>
            <groupId>org.apache.shiro</groupId>
            <artifactId>shiro-core</artifactId>
            <version>1.9.1</version>
        </dependency>
        <!-- Shiro uses SLF4J for logging.  We'll use the 'simple' binding
             in this example app.  See http://www.slf4j.org for more info. -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-simple</artifactId>
            <version>1.7.21</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>jcl-over-slf4j</artifactId>
            <version>1.7.21</version>
            <scope>test</scope>
        </dependency>
    </dependencies>
二、快速实践
项目搭建

1.数据库
CREATE TABLE `t_user` (
  `id` varchar(100) COLLATE utf8mb4_unicode_ci NOT NULL,
  `usercode` varchar(20) COLLATE utf8mb4_unicode_ci DEFAULT NULL,
  `userpwd` varchar(30) COLLATE utf8mb4_unicode_ci DEFAULT NULL,
  `nikename` varchar(10) COLLATE utf8mb4_unicode_ci DEFAULT NULL,
  `perms` varchar(100) COLLATE utf8mb4_unicode_ci DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci
2.实体类
package com.syj.springbootshiro.pojo;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@NoArgsConstructor
@AllArgsConstructor
public class User {
    private String id;
    private String usercode;
    private String userpwd;
    private String perms;
}
3.mapper接口
package com.syj.springbootshiro.mapper;
import com.syj.springbootshiro.pojo.User;
import org.apache.ibatis.annotations.Mapper;
import org.springframework.stereotype.Repository;
@Repository
@Mapper
public interface UserMapper {
    public User queryUserByName(String usercode);
}
4.mapper.xml
<?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="com.syj.springbootshiro.mapper.UserMapper">
    <select id="queryUserByName" parameterType="String" resultType="User">
        select * from t_user where usercode = #{usercode}
    </select>
</mapper>
5.Service接口
package com.syj.springbootshiro.service;
import com.syj.springbootshiro.pojo.User;
public interface UserService {
    public User queryUserByName(String usercode);
}
6.ServiceImpl实现类
package com.syj.springbootshiro.service.impl;
import com.syj.springbootshiro.mapper.UserMapper;
import com.syj.springbootshiro.pojo.User;
import com.syj.springbootshiro.service.UserService;
import lombok.AllArgsConstructor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service
public class UserServiceImpl implements UserService {
    @Autowired
    UserMapper userMapper;
    @Override
    public User queryUserByName(String usercode) {
        return userMapper.queryUserByName(usercode);
    }
}
7.controller
package com.syj.springbootshiro.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.session.Session;
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 usercode,String userpwd,Model model) {
        //获取当前用户
        Subject subject = SecurityUtils.getSubject();
        //封装用户的登录数据
        UsernamePasswordToken token = new UsernamePasswordToken(usercode, userpwd);
        try {
            subject.login(token);//执行登录方法,如果没有异常就登录ok
            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("/noauth")
    @ResponseBody
    public String Unauthorized(){
        return "未经授权无法访问此页面";
    }
}
8.config配置
1.ShiroConfig
package com.syj.springbootshiro.config;
import at.pollux.thymeleaf.shiro.dialect.ShiroDialect;
import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.apache.shiro.web.servlet.ShiroFilter;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;
@Configuration
public class ShiroConfig {
    //ShiroFilterFactoryBean:3
    @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内置过滤器
       /*
       * onon: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
       * peram: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
       * */
        //登录拦截
        Map<String, String> filterMap = new LinkedHashMap<>();
        //授权
        filterMap.put("/user/add","perms[user:add]");
        filterMap.put("/user/update","perms[user:update]");
        //方式一
        //filterMap.put("/user/add","authc");
        //filterMap.put("/user/update","authc");
        //方式二 通配符
        filterMap.put("/user/*","authc");
        bean.setFilterChainDefinitionMap(filterMap);
        //设置登录的请求
        bean.setLoginUrl("/toLogin");
        //未授权页面
        bean.setUnauthorizedUrl("/noauth");
        return bean;
    }
//    DefaultWebSecurityManager:2
    @Bean(name = "securityManager")
    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:1
    @Bean
    public UserRealm userRealm(){
        return new UserRealm();
    }
    //整合ShiroDialect 用来整合Shiro thymeleaf
    @Bean
    public ShiroDialect getShiroDialect(){
        return new ShiroDialect();
    }
}
2.UserRealm
package com.syj.springbootshiro.config;
import com.syj.springbootshiro.pojo.User;
import com.syj.springbootshiro.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;
public class UserRealm extends AuthorizingRealm {
    @Autowired
    private UserService userService;
    //授权
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        System.out.println("=====》执行授权AuthorizationInfo");
        SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
        info.addStringPermission("user:add");
        //拿到这个登录的对象
        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;
    }
    //认证
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
        System.out.println("=====》执行认证AuthenticationInfo");
        // 模拟测试数据
        //用户名,密码 数据中取
        //String name = "root";
        //String password = "123456";
//        if(!userToken.getUsername().equals(name)){
//            return null;//抛出异常 UnknownAccountException
//        }
        UsernamePasswordToken userToken = (UsernamePasswordToken) token;
        //链接真实数据库
        User user = userService.queryUserByName(userToken.getUsername());
        if(user == null){//没有这个人
            return null;
        }
        Subject currentSubject =  SecurityUtils.getSubject();
        Session session = currentSubject.getSession();
        session.setAttribute("loginUser",user);
        //MD5颜值加密
        //密码认证,shiro做
        return new SimpleAuthenticationInfo(user,user.getUserpwd(),"");
    }
}
三、前端
1.templates文件
1.index.html
<!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>Title</title>
</head>
<body>
    <h1>首页</h1>
    <div th:if="${session.loginUser==null}">
        <a th:href="@{/toLogin}">登录</a>
    </div>
    <p th:text="${msg}"></p>
    <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>
</body>
</html>
2.login.html
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</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="usercode"></p>
        <p>密码:<input type="text" name="userpwd"></p>
        <p>用户名<input type="submit"></p>
    </form>
</body>
</html>
3.user文件
1.add.html
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <h1>add</h1>
</body>
</html>
2.update.html
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <h1>update</h1>
</body>
</html>
四、pom文件
<?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>com.syj</groupId>
    <artifactId>springboot-shiro</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>springboot-shiro</name>
    <description>springboot-shiro</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>2.3.7.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>
            <version>1.18.24</version>
        </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>1.1.12</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.1.0</version>
        </dependency>
        <dependency>
            <groupId>org.apache.shiro</groupId>
            <artifactId>shiro-spring</artifactId>
            <version>1.4.1</version>
        </dependency>
        <dependency>
            <groupId>org.thymeleaf.extras</groupId>
            <artifactId>thymeleaf-extras-java8time</artifactId>
        </dependency>
        <dependency>
            <groupId>org.thymeleaf</groupId>
            <artifactId>thymeleaf-spring5</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>
                <version>3.8.1</version>
                <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>
                <version>2.3.7.RELEASE</version>
                <configuration>
                    <mainClass>com.syj.springbootshiro.SpringbootShiroApplication</mainClass>
                </configuration>
                <executions>
                    <execution>
                        <id>repackage</id>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>
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