SpringBoot集成Shiro权限控制【亲测可用】

Shiro是一个强大的简单易用的Java安全框架，主要用来更便捷的认证，授权，加密，会话管理。Shiro首要的和最重要的目标就是容易使用并且容易理解。

Shiro基本概念

三个核心组件：Subject, SecurityManager 和 Realms.

• Subject：翻译为主角，当前参与应用安全部分的主角。可以是用户，可以试第三方服务，可以是cron 任务，或者任何东西。主要指一个正在与当前软件交互的东西。所有Subject都需要SecurityManager，当你与Subject进行交互，这些交互行为实际上被转换为与SecurityManager的交互

Subject代表了当前用户的安全操作，SecurityManager则管理所有用户的安全操作。

• SecurityManager：安全管理员，Shiro架构的核心，它就像Shiro内部所有原件的保护伞。然而一旦配置了SecurityManager，SecurityManager就用到的比较少，开发者大部分时间都花在Subject上面。
  请记得，当你与Subject进行交互的时候，实际上是SecurityManager在背后帮你举起Subject来做一些安全操作。

• Realms：Realms作为Shiro和你的应用的连接桥，当需要与安全数据交互的时候，像用户账户，或者访问控制，Shiro就从一个或多个Realms中查找。Shiro提供了一些可以直接使用的Realms，如果默认的Realms不能满足你的需求，你也可以定制自己的Realms。

项目集成Shiro

导入POM

<?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>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.4.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>springboot-shiro-project</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>springboot-shiro-project</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>


    <dependencies>
    	<!--thymeleaf整合Shiro-->
        <dependency>
            <groupId>com.github.theborakompanioni</groupId>
            <artifactId>thymeleaf-extras-shiro</artifactId>
            <version>2.0.0</version>
        </dependency>
		<!--整合lombok，让代码变得更简洁-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.8</version>
        </dependency>

        <!--整合MySQl和mybatis-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.18</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.1.1</version>
        </dependency>
        <!--整合数据库连接池-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.19</version>
        </dependency>
        <!--整合log4j日志-->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
        

		<!--整合Shiro-->
        <dependency>
            <groupId>org.apache.shiro</groupId>
            <artifactId>shiro-core</artifactId>
            <version>1.4.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.shiro</groupId>
            <artifactId>shiro-spring</artifactId>
            <version>1.4.1</version>
        </dependency>


        <!--整合swagger2-->
        <!-- https://mvnrepository.com/artifact/io.springfox/springfox-swagger2 -->
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>2.9.2</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/io.springfox/springfox-swagger-ui -->
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>2.9.2</version>
        </dependency>
        <!---->


        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.thymeleaf</groupId>
            <artifactId>thymeleaf-spring5</artifactId>
            <version>3.0.11.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.thymeleaf.extras</groupId>
            <artifactId>thymeleaf-extras-java8time</artifactId>
            <version>3.0.4.RELEASE</version>
        </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>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

创建配置类

package com.example.springbootshiroproject.config;

@Configuration
public class ShiroConfig {

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

        Map<String,String> filterMap = new LinkedHashMap<>();

        //授权,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]");

//        filterMap.put("/user/add","authc");
        filterMap.put("/user/*","authc");

        shiroFilterFactoryBean.setFilterChainDefinitionMap(filterMap);
        //设置登录的请求
        shiroFilterFactoryBean.setLoginUrl("/tologin");
        //未授权,跳转的页面
        shiroFilterFactoryBean.setUnauthorizedUrl("/noauth");
        return shiroFilterFactoryBean;
    }

	//核心的安全事务管理器 getdefaultWebSecurityManager
    @Bean(name = "securityManager")
    public DefaultWebSecurityManager getdefaultWebSecurityManager(@Qualifier("userRealm") UserRealm userRealm) {
        DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
        securityManager.setRealm(userRealm);
        return securityManager;
    }

	//UserRealm，这是个自定义的认证类，继承自AuthorizingRealm，负责用户的认证和权限的处理
    @Bean
    public UserRealm userRealm(){
        return new UserRealm();
    }

    //整合shiro和thyemleaf
    @Bean
    public ShiroDialect getShiroDialect(){
        return new ShiroDialect();
    }
}

package com.example.springbootshiroproject.config;
//UserRealm，这是个自定义的认证类，继承自AuthorizingRealm，负责用户的认证和权限的处理
public class UserRealm extends AuthorizingRealm {

    @Autowired
    private 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");
        //获取当前登录的对象
        Subject subject = SecurityUtils.getSubject();

        User currentUser = (User) subject.getPrincipal();
        info.addStringPermission(currentUser.getPerms());
        System.out.println(info);
        return info;
    }

    //认证
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
        System.out.println("执行了认证：doGetAuthenticationInfo");

        UsernamePasswordToken userToken = (UsernamePasswordToken) token;
        User user = userService.queryUserByName(userToken.getUsername());
        if(user==null){
            return null;
        }

        //密码认证   shiro  来做
        return new SimpleAuthenticationInfo(user,user.getPwd(),"");
    }
}

控制层代码

package com.example.springbootshiroproject.controller;

@Controller
public class HelloController {

    @GetMapping("/index")
    public String toIndex(Model model){
        model.addAttribute("msg","hello shiro");
        return "index";
    }

    @PostMapping("/user/add")
    public String add(){
        return "/user/add";
    }

    @PostMapping("/user/update")
    public String update(){
        return "/user/update";
    }

    @GetMapping("/tologin")
    public String login(){
        return "login";
    }

    @PostMapping("/login")
    public String login(String username,String password,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(username,password);

        try {
            subject.login(token);//执行登录的方法
            return "index";
        } catch (UnknownAccountException e) {
            model.addAttribute("msg","用户名错误");
            return "login";
        }catch (IncorrectCredentialsException e){
            model.addAttribute("msg","密码错误");
            return "login";
        }
    }

    @GetMapping("/noauth")
    @ResponseBody
    public String unauthorized(){
        return "未经授权，不能访问此页面";
    }
}

• 到这儿，与Shiro相关的代码已经结束了。所以代码不在列出。完成代码请查看github自行下载，代码都是自己写的，也都亲自跑过，可放心使用。
• github：https://github.com/carroll1118/Shiro-Spring-Security.git

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