<parent>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-parent</artifactId>
	<version>2.0.2.RELEASE</version>
</parent>

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

<dependency>
	<groupId>org.apache.shiro</groupId>
	<artifactId>shiro-spring</artifactId>
	<version>1.4.0</version>
</dependency>
shiro 注解會用到 aop
<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-aop</artifactId>
</dependency>
數據庫相關包使用的是mybatisplus
<dependency>
	<groupId>com.alibaba</groupId>
	<artifactId>druid</artifactId>
	<version>1.1.12</version>
</dependency>
<dependency>
	<groupId>mysql</groupId>
	<artifactId>mysql-connector-java</artifactId>
</dependency>
<dependency>
	<groupId>com.baomidou</groupId>
	<artifactId>mybatis-plus-boot-starter</artifactId>
	<version>3.1.0</version>
</dependency>
<dependency>
	<groupId>com.baomidou</groupId>
	<artifactId>mybatis-plus-generator</artifactId>
	<version>3.1.0</version>
</dependency>
	<dependency>
	<groupId>org.apache.velocity</groupId>
	<artifactId>velocity-engine-core</artifactId>
	<version>2.0</version>
</dependency>

public class MyShiroRealm extends AuthorizingRealm {
	@Autowired
	private UserService userService;
	@Autowired
	private RoleService roleService;
	@Autowired
	private PermissionService permissionService;

	@Override
	protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {

		SimpleAuthorizationInfo authorizationInfo = new SimpleAuthorizationInfo();
		// HttpServletRequest request = (HttpServletRequest) ((WebSubject) SecurityUtils
		// .getSubject()).getServletRequest();//這個可以用來獲取在登錄的時候提交的其他額外的參數信息
		String username = (String) principals.getPrimaryPrincipal();
		// 受理權限
		// 角色
		Set<String> roles = new HashSet<String>();
		Role role = roleService.getRoleByUserName(username);
		System.out.println(role.getRoleName());
		roles.add(role.getRoleName());
		authorizationInfo.setRoles(roles);
		// 權限
		Set<String> permissions = new HashSet<String>();
		List<Permission> querypermissions = permissionService.getPermissionsByRoleId(role.getId());
		for (Permission permission : querypermissions) {
			permissions.add(permission.getPermissionName());
		}
		authorizationInfo.setStringPermissions(permissions);
		return authorizationInfo;
	}

	@Override
	protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authcToken)
			throws AuthenticationException {
		String loginName = (String) authcToken.getPrincipal();
		// 獲取用戶密碼
		User user = userService.getOne(new QueryWrapper<User>().eq("username", loginName));
		if (user == null) {
			// 沒找到帳號
			throw new UnknownAccountException();
		}
		String password = new String((char[]) authcToken.getCredentials());
		String inpass = (new Md5Hash(password, user.getUsername())).toString();
		if (!user.getPassword().equals(inpass)) {
			throw new IncorrectCredentialsException();
		}
		// 交給AuthenticatingRealm使用CredentialsMatcher進行密碼匹配
		SimpleAuthenticationInfo authenticationInfo = new SimpleAuthenticationInfo(loginName, user.getPassword(),
				ByteSource.Util.bytes(loginName), getName());

		return authenticationInfo;
	}

}

@Configuration
public class ShiroConfiguration {
	private static final Logger logger = LoggerFactory.getLogger(ShiroConfiguration.class);

	/**
	 * Shiro的Web過濾器Factory 命名:shiroFilter
	 */
	@Bean(name = "shiroFilter")
	public ShiroFilterFactoryBean shiroFilterFactoryBean(SecurityManager securityManager) {
		ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();
		// Shiro的核心安全接口,這個屬性是必須的
		shiroFilterFactoryBean.setSecurityManager(securityManager);
		//需要權限的請求，如果沒有登錄則會跳轉到這里設置的url
		shiroFilterFactoryBean.setLoginUrl("/login.html");
		//設置登錄成功跳轉url，一般在登錄成功后自己代碼設置跳轉url，此處基本沒用
		shiroFilterFactoryBean.setSuccessUrl("/main.html");
		//設置無權限跳轉界面,此處一般不生效,一般自定義異常
		shiroFilterFactoryBean.setUnauthorizedUrl("/error.html");
		Map<String, Filter> filterMap = new LinkedHashMap<>();
		// filterMap.put("authc", new AjaxPermissionsAuthorizationFilter());
		shiroFilterFactoryBean.setFilters(filterMap);
		/*
		 * 定義shiro過濾鏈 Map結構
		 * Map中key(xml中是指value值)的第一個'/'代表的路徑是相對于HttpServletRequest.getContextPath()的值來的
		 * anon：它對應的過濾器里面是空的,什么都沒做,這里.do和.jsp后面的*表示參數,比方說login.jsp?main這種
		 * authc：該過濾器下的頁面必須驗證后才能訪問,它是Shiro內置的一個攔截器org.apache.shiro.web.filter.authc.
		 * FormAuthenticationFilter
		 */
		Map<String, String> filterChainDefinitionMap = new LinkedHashMap<>();
		/*
		 * 過濾鏈定義，從上向下順序執行，一般將 /**放在最為下邊; authc:所有url都必須認證通過才可以訪問;
		 * anon:所有url都都可以匿名訪問
		 */
		filterChainDefinitionMap.put("/login.html", "authc");
		filterChainDefinitionMap.put("/login", "anon");
		filterChainDefinitionMap.put("/js/**", "anon");
		filterChainDefinitionMap.put("/css/**", "anon");
		filterChainDefinitionMap.put("/logout", "logout");
		filterChainDefinitionMap.put("/**", "authc");
		shiroFilterFactoryBean.setFilterChainDefinitionMap(filterChainDefinitionMap);
		return shiroFilterFactoryBean;
	}

	/**
	 * 權限管理
	 */
	@Bean
	public SecurityManager securityManager() {
		logger.info("=======================shiro=======================");
		DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
		securityManager.setRealm(MyShiroRealm());
		// securityManager.setRememberMeManager(rememberMeManager);
		return securityManager;
	}

	/**
	 * Shiro Realm 繼承自AuthorizingRealm的自定義Realm,即指定Shiro驗證用戶登錄的類為自定義的
	 */
	@Bean
	public MyShiroRealm MyShiroRealm() {
		MyShiroRealm userRealm = new MyShiroRealm();
		userRealm.setCredentialsMatcher(hashedCredentialsMatcher());
		return userRealm;
	}

	/**
	 * 憑證匹配器 密碼驗證
	 */
	@Bean(name = "credentialsMatcher")
	public HashedCredentialsMatcher hashedCredentialsMatcher() {
		HashedCredentialsMatcher hashedCredentialsMatcher = new HashedCredentialsMatcher();
		// 散列算法:這里使用MD5算法;
		hashedCredentialsMatcher.setHashAlgorithmName("md5");
		// 散列的次數，比如散列兩次，相當于 md5(md5(""));
		hashedCredentialsMatcher.setHashIterations(1);
		// storedCredentialsHexEncoded默認是true，此時用的是密碼加密用的是Hex編碼；false時用Base64編碼
		hashedCredentialsMatcher.setStoredCredentialsHexEncoded(true);
		return hashedCredentialsMatcher;
	}

	/**
	 * 開啟Shiro的注解(如@RequiresRoles,@RequiresPermissions),需借助SpringAOP掃描使用Shiro注解的類,并在必要時進行安全邏輯驗證
	 */
	@Bean
	public AuthorizationAttributeSourceAdvisor authorizationAttributeSourceAdvisor() {
		AuthorizationAttributeSourceAdvisor authorizationAttributeSourceAdvisor = new AuthorizationAttributeSourceAdvisor();
		authorizationAttributeSourceAdvisor.setSecurityManager(securityManager());
		return authorizationAttributeSourceAdvisor;
	}

}

@RestController
public class UserController {
	@PostMapping("login")
	public String name(String username, String password) {
		String result = "已登錄";
		Subject currentUser = SecurityUtils.getSubject();
		UsernamePasswordToken token = new UsernamePasswordToken(username, password);
		if (!currentUser.isAuthenticated()) {
			try {
				currentUser.login(token);// 會觸發com.shiro.config.MyShiroRealm的doGetAuthenticationInfo方法
				result = "登錄成功";
			} catch (UnknownAccountException e) {
				result = "用戶名錯誤";
			} catch (IncorrectCredentialsException e) {
				result = "密碼錯誤";
			}
		}
		return result;
	}

	@GetMapping("logout")
	public void logout() {
		Subject currentUser = SecurityUtils.getSubject();
		currentUser.logout();
	}

	@RequiresPermissions("role:update")
	@GetMapping("/role")
	public String name() {
		return "hello";
	}

	@RequiresPermissions("user:select")
	@GetMapping("/role2")
	public String permission() {
		return "hello sel";
	}

}

@ControllerAdvice
public class ShiroException {
	@ExceptionHandler(value = UnauthorizedException.class)
	@ResponseBody
	public String name() {
		return "沒有權限";
	}
}