SpringBoot整合Shiro的环境搭建教程

<!-- https://mvnrepository.com/artifact/org.apache.shiro/shiro-spring -->
<dependency>
    <groupId>org.apache.shiro</groupId>
    <artifactId>shiro-spring</artifactId>
    <version>1.10.1</version>
</dependency>

@Configuration
public class ShiroConfig {
    
}

public class UserRealm extends AuthorizingRealm {
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        System.out.println("执行了授权方法");
        return null;
    }

    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
        System.out.println("执行了认证方法");
        return null;
    }
}

@Configuration
public class ShiroConfig {
    @Bean
    public UserRealm userRealm(){
        return new UserRealm();
    }
}

@Bean(name = "SecurityManager")
public DefaultWebSecurityManager getDefaultWebSecurity(@Qualifier("userRealm") UserRealm userRealm) {
    DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
    // 需要关联自定义的 Realm，通过参数把 Realm 对象传递过来
    securityManager.setRealm(userRealm);
    return securityManager;
}

@Bean
public ShiroFilterFactoryBean shiroFilterFactoryBean(@Qualifier("SecurityManager") DefaultWebSecurityManager defaultWebSecurityManager) {
    ShiroFilterFactoryBean subject = new ShiroFilterFactoryBean();
    // 设置安全管理器
    // 需要关联 securityManager ，通过参数把 securityManager 对象传递过来
    subject.setSecurityManager(defaultWebSecurityManager);
    return subject;
}

@Configuration
public class ShiroConfig {

    @Bean
    public ShiroFilterFactoryBean shiroFilterFactoryBean(@Qualifier("SecurityManager") DefaultWebSecurityManager defaultWebSecurityManager) {
        ShiroFilterFactoryBean subject = new ShiroFilterFactoryBean();
        // 设置安全管理器
        // 需要关联 securityManager ，通过参数把 securityManager 对象传递过来
        subject.setSecurityManager(defaultWebSecurityManager);
        return subject;
    }

    @Bean(name = "SecurityManager")
    public DefaultWebSecurityManager getDefaultWebSecurity(@Qualifier("userRealm") UserRealm userRealm) {
        DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
        // 需要关联自定义的 Realm，通过参数把 Realm 对象传递过来
        securityManager.setRealm(userRealm);
        return securityManager;
    }

    @Bean
    public UserRealm userRealm() {
        return new UserRealm();
    }
}

<a th:href="@{/user/add}" rel="external nofollow" >add</a>
<hr/>
<a th:href="@{/user/update}" rel="external nofollow" >update</a>

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

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