<!-- Shiro核心框架 -->
        <dependency>
            <groupId>org.apache.shiro</groupId>
            <artifactId>shiro-core</artifactId>
            <version>1.9.0</version>
        </dependency>
        <!-- Shiro使用Spring框架 -->
        <dependency>
            <groupId>org.apache.shiro</groupId>
            <artifactId>shiro-spring</artifactId>
            <version>1.9.0</version>
        </dependency>
        <!-- Thymeleaf中使用Shiro標簽 -->
        <dependency>
            <groupId>com.github.theborakompanioni</groupId>
            <artifactId>thymeleaf-extras-shiro</artifactId>
            <version>2.1.0</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>

@Data
@Accessors(chain = true)
public class User {
    /**
     * 用戶id
     */
    private Long userId;
    /**
     * 用戶名
     */
    private String username;
    /**
     * 密碼
     */
    private String password;
    /**
     * 用戶別稱
     */
    private String name;
}

/**
 * 自定義登錄授權
 *
 * @author ding
 */
public class UserRealm extends AuthorizingRealm {
    /**
     * 授權
     * 此處權限授予
     */
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
        // 在這里為每一個用戶添加vip權限
        info.addStringPermission("vip");
        return info;
    }
    /**
     * 認證
     * 此處實現我們的登錄邏輯，如賬號密碼驗證
     */
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
        // 獲取到token
        UsernamePasswordToken token = (UsernamePasswordToken) authenticationToken;
        // 從token中獲取到用戶名和密碼
        String username = token.getUsername();
        String password = String.valueOf(token.getPassword());
        // 為了方便,這里模擬獲取用戶
        User user = this.getUser();
        if (!user.getUsername().equals(username)) {
            throw new UnknownAccountException("用戶不存在");
        } else if (!user.getPassword().equals(password)) {
            throw new IncorrectCredentialsException("密碼錯誤");
        }
        // 校驗完成后，此處我們把用戶信息返回，便于后面我們通過Subject獲取用戶的登錄信息
        return new SimpleAuthenticationInfo(user, password, getName());
    }
    /**
     * 此處模擬用戶數據
     * 實際開發(fā)中，換成數據庫查詢獲取即可
     */
    private User getUser() {
        return new User()
                .setName("admin")
                .setUserId(1L)
                .setUsername("admin")
                .setPassword("123456");
    }
}

/**
 * shiro核心管理器
 *
 * @author ding
 */
@Configuration
public class ShiroConfig {
    /**
     * 無需認證就可以訪問
     */
    private final static String ANON = "anon";
    /**
     * 必須認證了才能訪問
     */
    private final static String AUTHC = "authc";
    /**
     * 擁有對某個資源的權限才能訪問
     */
    private final static String PERMS = "perms";
    /**
     * 創(chuàng)建realm，這里返回我們上一把定義的UserRealm 
     */
    @Bean(name = "userRealm")
    public UserRealm userRealm() {
        return new UserRealm();
    }
    /**
     * 創(chuàng)建安全管理器
     */
    @Bean(name = "securityManager")
    public DefaultWebSecurityManager getDefaultWebSecurityManager(@Qualifier("userRealm") UserRealm userRealm) {
        DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
        //綁定realm對象
        securityManager.setRealm(userRealm);
        return securityManager;
    }
    /**
     * 授權過濾器
     */
    @Bean
    public ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier("securityManager") DefaultWebSecurityManager defaultWebSecurityManager) {
        ShiroFilterFactoryBean bean = new ShiroFilterFactoryBean();
        // 設置安全管理器
        bean.setSecurityManager(defaultWebSecurityManager);
        // 添加shiro的內置過濾器
        Map<String, String> filterMap = new LinkedHashMap<>();
        filterMap.put("/index", ANON);
        filterMap.put("/userInfo", PERMS + "[vip]");
        filterMap.put("/table2", AUTHC);
        filterMap.put("/table3", PERMS + "[vip2]");
        bean.setFilterChainDefinitionMap(filterMap);
        // 設置跳轉登陸頁
        bean.setLoginUrl("/login");
        // 無權限跳轉
        bean.setUnauthorizedUrl("/unAuth");
        return bean;
    }
    /**
     * Thymeleaf中使用Shiro標簽
     */
    @Bean
    public ShiroDialect shiroDialect() {
        return new ShiroDialect();
    }
}

/**
 * @author ding
 */
@Controller
public class IndexController {
    @RequestMapping({"/", "/index"})
    public String index(Model model) {
        model.addAttribute("msg", "hello,shiro");
        return "/index";
    }
    @RequestMapping("/userInfo")
    public String table1(Model model) {
        return "userInfo";
    }
    @RequestMapping("/table")
    public String table(Model model) {
        return "table";
    }
    @GetMapping("/login")
    public String login() {
        return "login";
    }
    @PostMapping(value = "/doLogin")
    public String doLogin(@RequestParam("username") String username, @RequestParam("password") String password, Model model) {
        //獲取當前的用戶
        Subject subject = SecurityUtils.getSubject();
        //用來存放錯誤信息
        String msg = "";
        //如果未認證
        if (!subject.isAuthenticated()) {
            //將用戶名和密碼封裝到shiro中
            UsernamePasswordToken token = new UsernamePasswordToken(username, password);
            try {
                // 執(zhí)行登陸方法
                subject.login(token);
            } catch (Exception e) {
                e.printStackTrace();
                msg = "賬號或密碼錯誤";
            }
            //如果msg為空，說明沒有異常，就返回到主頁
            if (msg.isEmpty()) {
                return "redirect:/index";
            } else {
                model.addAttribute("errorMsg", msg);
                return "login";
            }
        }
        return "/login";
    }
    @GetMapping("/logout")
    public String logout() {
        SecurityUtils.getSubject().logout();
        return "index";
    }
    @GetMapping("/unAuth")
    public String unAuth() {
        return "unAuth";
    }
}

<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<html xmlns:shiro="http://www.pollix.at/thymeleaf/shiro">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>首頁</h1>
<!-- 使用shiro標簽 -->
<shiro:authenticated>
    <p>用戶已登錄</p> <a th:href="@{/logout}" rel="external nofollow" >退出登錄</a>
</shiro:authenticated>
<shiro:notAuthenticated>
    <p>用戶未登錄</p>　　
</shiro:notAuthenticated>
<br/>
<a th:href="@{/userInfo}" rel="external nofollow" >用戶信息</a>
<a th:href="@{/table}" rel="external nofollow" >table</a>
</body>
</html>

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>登陸頁</title>
</head>
<body>
<div>
    <p th:text="${errorMsg}"></p>
    <form action="/doLogin" method="post">
        <h2>登陸頁</h2>
        <h6>賬號：admin,密碼：123456</h6>
        <input type="text" id="username"  name="username" placeholder="admin">
        <input type="password" id="password" name="password"  placeholder="123456">
        <button type="submit">登陸</button>
    </form>
</div>
</body>
</html>

<!DOCTYPE html>
<html lang="en" xmlns:shiro="http://www.pollix.at/thymeleaf/shiro">
<head>
    <meta charset="UTF-8">
    <title>table1</title>
</head>
<body>
<h1>用戶信息</h1>
<!-- 利用shiro獲取用戶信息 -->
用戶名：<shiro:principal property="username"/>
<br/>
用戶完整信息： <shiro:principal/>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>table</title>
</head>
<body>
<h1>table</h1>
</body>
</html>