Apache shiro 权限框架

Apache shiro学习文档

作者：pinkhub

时间：2021/12/24

技术栈：springboot+mybatisPlus+shiro

未来，我们抱团取暖，结伴而行…

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第一章 Apache Shiro 概述

Apache Shiro 是一个强大而灵活的开源安全框架，可以干净地处理身份验证、授权、企业会话管理和加密。

身份验证：有时也被称为“登录”，这是一种证明用户真实身份的行为。

授权：访问控制的过程，即确定“谁”可以访问“什么”。

会话管理：管理特定于用户的会话，即使是在非 Web 或 EJB 应用程序中。

密码学：使用密码算法确保数据安全，同时仍然易于使用。

官方文档：https://shiro.apache.org/reference.html

第二章 Apache Shiro 架构

关键字：Subject、SecurityManager``和``Realms

第三章 Apache Shiro 配置

3.1 配置文件（ini）配置

基于INI配置使DefinitionRealm、definitionRealm生效

# =======================
# Shiro INI configuration
# =======================

[main]
# Objects and their properties are defined here,
# Such as the securityManager, Realms and anything
# else needed to build the SecurityManager
definitionRealm=edu.pinkhub.shrio_demo.realm.DefinitionRealm
securityManager.realms=$definitionRealm

[users]
# The 'users' section is for simple deployments
# when you only need a small number of statically-defined
# set of User accounts.
jay=1234

[roles]
# The 'roles' section is for simple deployments
# when you only need a small number of statically-defined
# roles.

[urls]
# The 'urls' section is used for url-based security
# in web applications.  We'll discuss this section in the
# Web documentation

3.2 配置类配置

@Configuration
public class ShiroConfig {
    
    
    /**
     * 创建realm、securityManagert组件交给spring容器管理   等价于shiro.ini配置文件
     * @return
     */
    @Bean("shiroRealm")
    public ShiroRealm shiroRealm(){
    
    
        return new ShiroRealm();
    }
    @Bean(name = "securityManager")
    public DefaultWebSecurityManager defaultWebSecurityManager(@Qualifier("shiroRealm") ShiroRealm shiroRealm) {
    
    
        DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
        securityManager.setRealm(shiroRealm);
        return securityManager;
    }
}

第四章 Apache Shiro 核心

前提

导入shiro依赖:可以选择shiro-spring-boot-starter、shiro-spring、shiro-core的一个。

<dependency>
			<groupId>org.apache.shiro</groupId>
			<artifactId>shiro-spring-boot-starter</artifactId>
			<version>1.8.0</version>
</dependency>

tips:

如果选择shiro-core依赖时，版本不要太高，否则IniSecurityManagerFactory方法过时

4.1 编码和解码算法

shiro提供base64和16进制字符串编码和解码的API支持。

工具类如下：

public class EncodesUtil {
    
    
    /**
     * 利用Hex字节转字符串
     * @param input 输入字节数组
     * @return 字符串
     */
    public static String encodeHex(byte[] input){
    
    
        return Hex.encodeToString(input);
    }
    /**
     * 利用Hex字符串转字节
     * @param input 输入字符串
     * @return 字节数组
     */
    public static byte[] decodeHex(String input){
    
    
        return Hex.decode(input);
    }
    /**
     * 利用Base64格式将字节转字符串
     * @param input
     * @return
     */
    public static String encodeBase64(byte[] input){
    
    
        return Base64.encodeToString(input);
    }
    /**
     * 利用Base64格式将字符串转字节
     * @param input
     * @return
     */
    public static byte[] decodeBase64(String input){
    
    
        return Base64.decode(input);
    }
}

4.2 散列算法

散列算法用于生成数据的摘要信息，不可逆算法，常用于存储密码，常见的散列算法有：MD5、SHA等，散列的对象：“密码+salt”，salt其实是干扰数据。

散列算法的5种实现类：

tips:其中6种加密实现类继承于SimpleHash类

关键字：salt→SecureRandomNumberGenerator

​ password→SimpleHash

摘要算法工具类：用于对密码加密

/*
*@param1:算法名称
*@param2:明文
*@param3:盐值
*@param4;加密次数
public SimpleHash(String algorithmName,Object source,@Nullable Object salt,int hashIterations)
*/ 
public class DigestsUtil {
    
    
    //算法类型
    public static final String SHA1="SHA-1";
    //加密次数
    public static final Integer ITERATION=512;
    /**sha1摘要算法
     * @param input 明文字符串
     * @param salt  干扰数据
     * @return
     */
    public static String sha1(String plaintext,String salt){
    
    
        return new SimpleHash(SHA1,plaintext,salt,ITERATION).toString();
    }
    /**
     * 随机生成salt
     * @return  salt(16进制)
     */
    public static String createSalt(){
    
    
        SecureRandomNumberGenerator secureRandomNumberGenerator = new SecureRandomNumberGenerator();
        return secureRandomNumberGenerator.nextBytes().toHex();
    }
    /**
     *生成密码和salt的密文
     * @param pwd
     * @return
     */
    public static Map<String,String> entryptPassword(String pwd){
    
    
        HashMap<String, String> map = new HashMap<>();
        String salt=createSalt();
        String password=sha1(pwd,salt);
        map.put("salt",salt);
        map.put("password",password);
        return map;
    }
}

测试类：

System.out.println(DigestsUtil.entryptPassword("123").toString());

运行结果：

{
    
    password=54eeefc1368c375feeac0f71e1e6c929d4d5d6f1, salt=ba18ca250fd8442eaccfa3a03c3a5530}

4.3 认证

认证流程

【第一步】：Shiro把用户的数据封装成标识token，token一般封装着用户名，密码等信息 UsernamePasswordToken

【第二步】：使用Subject门面获取到封装着用户的数据的标识token subject.login(usernamePasswordToken);

【第三步】：Subject把标识token交给SecurityManager，SecurityManager再把标识token委托给认证器Authenticator进行身份验证。

​ 认证器的作用一般是用来指定如何验证，它规定本次认证用到哪些Realm

【第四步】：认证器Authenticator将传入的标识token，与数据源Realm对比，验证token是否合法

关键字：

doGetAuthenticationInfo、SimpleAuthenticationInfo

案例一：登陆测试1

数据来自shiro.ini文件

第一步：导入依赖

<dependency>
			<groupId>org.apache.shiro</groupId>
			<artifactId>shiro-spring-boot-starter</artifactId>
			<version>1.8.0</version>
</dependency>

第二步：创建shiro.ini

#声明用户账号
[users]
jay=1234

第三步：测试代码

public void shiroLogin(){
    
    
		//1.导入ini配置创建工厂
		IniSecurityManagerFactory factory = new IniSecurityManagerFactory("classpath:shiro.ini");
		//2.通过工厂构建安全构建器
		SecurityManager securityManager = factory.getInstance();
		//3.通过工具类让安全构建器生效
		SecurityUtils.setSecurityManager(securityManager);
		//4.通过工具类获取subject主体
		Subject subject = SecurityUtils.getSubject();
		//5.构建账号和密码
		UsernamePasswordToken usernamePasswordToken = new UsernamePasswordToken("jay", "1234");
		//6.使用subject登录
		subject.login(usernamePasswordToken);
		//7.输出状态
		System.out.println("登陆状态:"+subject.isAuthenticated());
}

截图：

案例二：登陆测试2

数据来自数据库

【第一步】：自定义realm

public class DefinitionRealm extends AuthorizingRealm {
    
    
    /*
     * 认证方法
     */
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException     {
    
    
        String loginName = (String)authenticationToken.getPrincipal();
        //模拟数据库查询
        SecurityServiceImpl securityService = new SecurityServiceImpl();
        String password = securityService.findPasswordByUserName(loginName);
        if(password==""){
    
    
            throw new AuthenticationException("账号不存在");
        }
        return new SimpleAuthenticationInfo(loginName,password,getName());
    }
    /*
    *鉴权方法
    */
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
    
    
        return null;
    }
}

【第二步】：创建shiro.ini definitionRealm生效

[main]
definitionRealm=edu.pinkhub.shrio_demo.realm.DefinitionRealm
securityManager.realms=$definitionRealm

【第三步】：测试

@Test
	public void shiroLogin(){
    
    
		//1.导入ini配置创建工厂
		IniSecurityManagerFactory factory = new IniSecurityManagerFactory("classpath:shiro.ini");
		//2.工厂构建安全构建器
		SecurityManager securityManager = factory.getInstance();
		//3.通过工具类让安全构建器生效
		SecurityUtils.setSecurityManager(securityManager);
		//4.通过工具获取subject主体
		Subject subject = SecurityUtils.getSubject();
		//5.构建账号和密码
		UsernamePasswordToken usernamePasswordToken = new UsernamePasswordToken("jay", "1234");
		//6.使用subject登录
		subject.login(usernamePasswordToken);
		//7.输出状态
		System.out.println("登陆状态:"+subject.isAuthenticated());
	}

案例三：登录测试3

Realm使用散列算法模拟登录

【第一步】：创建shiro.ini，使自定义realm生效

[main]
definitionRealm=edu.pinkhub.shrio_demo.realm.DefinitionRealm
securityManager.realms=$definitionRealm

【第二步】：创建service接口

public interface SecurityService {
    
    
    Map<String,String> findPasswordByUserName(String userName);
}

【第三步】：创建service实现类，模拟根据用户名从数据库查询其加密密码、角色列表、权限列表

@Service
public class SecurityServiceImpl implements SecurityService {
    
    
    @Override
    public Map<String,String> findPasswordByUserName(String userName) {
    
    
        return DigestsUtil.entryptPassword("123456");
    }
}

【第四步】：创建realm

public class DefinitionRealm extends AuthorizingRealm {
    
    
    public DefinitionRealm(){
    
    
        //1.指定密码匹配方式
        HashedCredentialsMatcher hashedCredentialsMatcher = new HashedCredentialsMatcher(DigestsUtil.SHA1);
        //2.指定密码迭代次数
        hashedCredentialsMatcher.setHashIterations(DigestsUtil.ITERATION);
        //3.生效
        setCredentialsMatcher(hashedCredentialsMatcher);
    }
    /*
     * 认证方法
     * */
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
    
    
        String loginName = (String)authenticationToken.getPrincipal();
        SecurityServiceImpl securityService = new SecurityServiceImpl();
        Map<String, String> map = securityService.findPasswordByUserName(loginName);
        if(map.isEmpty()){
    
    
            throw new AuthenticationException("账号不存在");
        }
        String password=map.get("password");
        String salt = map.get("salt");
        return new SimpleAuthenticationInfo(loginName,password, ByteSource.Util.bytes(salt),getName());
    }
    /*
    鉴权方法
    */
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
    
    
       return null;
    }
}

【第五步】：编写测试类

    @Test
	public void shiroLogin(){
    
    
		//1.导入ini配置创建工厂
		IniSecurityManagerFactory factory = new IniSecurityManagerFactory("classpath:shiro.ini");
		//2.工厂构建安全构建器
		SecurityManager securityManager = factory.getInstance();
		//3.通过工具类让安全构建器生效
		SecurityUtils.setSecurityManager(securityManager);
		//4.通过工具获取subject主体
		Subject subject = SecurityUtils.getSubject();
		//5.构建账号和密码
		UsernamePasswordToken usernamePasswordToken = new UsernamePasswordToken("pinkhub", "123456");
		//6.使用subject登录
		subject.login(usernamePasswordToken);
		//7.输出状态
		System.out.println("登陆状态:"+subject.isAuthenticated());
	}

源码追踪：

将token、info密码匹配结果boolean值，返回subject.isAuthenticated()

4.4 授权

前提：用户必须通过认证；角色和权限存放在数据库中

基本流程

【第一步】：首先调用Subject.isPermitted*/hasRole*接口，然后委托给SecurityManager（安全管理器）

【第二步】：SecurityManager在委托给内部组件Authorizer（授权器）

【第三步】：Authorizer再将请求委托给Realm去做

【第四步】：Realm将用户请求的参数封装成权限对象，再从我们重写的doGetAuthorizationInfo方法中获取从数据库中查询到的权限集合

【第五步】：Realm将用户传入的权限对象，与从数据库查出的权限对象进行一一对比。如果用户传入的权限对象在数据库中查出来的权限对象中，则返回true，否则返回false

关键字：doGetAuthorizationInfo、SimpleAuthorizationInfo

ShiroConfig配置

配置内容：

（1）创建自定义ShiroDbRealm实现，用于权限认证、授权、加密方式的管理，同时从数据库中取得相关的角色、资源、用户的信息，然后交于DefaultWebSecurityManager权限管理器管理

（2）创建DefaultWebSecurityManager权限管理器用于管理DefaultWebSessionManager会话管理器、ShiroDbRealm

（3）创建ShiroFilterFactoryBean的shiro过滤器指定权限管理器、同时启动连接链及登录URL、未登录的URL的跳转

（4）创建SimpleCookie，访问项目时，会在客户端中cookie中存放ShiroSession

（5）创建DefaultWebSessionManager会话管理器定义cookie机制、定时刷新、全局会话超时时间然后交于DefaultWebSecurityManager权限管理器管理

@Configuration
public class ShiroConfig {
    
    
    /**
     * 创建ShiroDBRealm交给spring容器
     * @return
     */
    @Bean("shiroDBRealm")
    public ShiroDBRealm shiroDBRealm() {
    
    
        return new ShiroDBRealm();
    }
    /**
     * 安全管理器
     * @param userRealm
     * @return
     */
    @Bean(name = "securityManager")
    public DefaultWebSecurityManager defaultWebSecurityManager(@Qualifier("shiroDBRealm") ShiroDBRealm userRealm) {
    
    
        DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
        securityManager.setRealm(userRealm);
        return securityManager;
    }
    /**
     * 拦截器--拦截请求
     * 常用的过滤器：
     * anno:无需认证即可访问
     * authc:必须认证才能访问
     * perms: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
     * @param securityManager
     * @return
     */
    @Bean
    public ShiroFilterFactoryBean shiroFilterFactoryBean(@Qualifier("securityManager") DefaultWebSecurityManager securityManager) {
    
    
        ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();
        //拦截
        HashMap<String, String> filterMap = new HashMap<>();
        //filterMap.put("/user/login", "anon");
        filterMap.put("/user/add", "perms[add]");
        filterMap.put("/user/edit", "perms[update]");
        shiroFilterFactoryBean.setFilterChainDefinitionMap(filterMap);
        //没通过验证，触发登录拦截请求，跳转登陆页面
        shiroFilterFactoryBean.setLoginUrl("/user/toLogin");
        //触发未认证请求，跳转未授权页面
        shiroFilterFactoryBean.setUnauthorizedUrl("/user/noAuth");
        shiroFilterFactoryBean.setSecurityManager(securityManager);
        return shiroFilterFactoryBean;
    }
}

案例一：用户权限校验

/*前提：认证成功
（1）通过doGetAuthorizationInfo方法实现鉴权
（2）使用Subject类来实现权限的校验
*/
/**************************************************运行结果********************************************************************/
登陆状态:true
当前用户是否拥有管理员角色true
当前用户是否拥有查看订单的权限true
当前用户没有coder角色

【1】模拟从数据库查出的角色和权限列表

@Override
public Map<String,String> findPasswordByUserName(String userName) {
    
    
    return DigestsUtil.entryptPassword("123456");
}
@Override
public List<String> findRoleByUserName(String userName) {
    
    
     List<String> roleList = new ArrayList();
     roleList.add("admin");
     roleList.add("dev");
     roleList.add("student");
     return roleList;
}
@Override
public List<String> findPermissionByUserName(String UserName) {
    
    
    List<String> list=new ArrayList();
    list.add("order:add");
    list.add("order:del");
    list.add("order:update");
    list.add("order:query");
    return list;
}

【2】编写doGetAuthorizationInfo

public class DefinitionRealm extends AuthorizingRealm {
    
    
    public DefinitionRealm(){
    
    
        //1.指定密码匹配方式
        HashedCredentialsMatcher hashedCredentialsMatcher = new HashedCredentialsMatcher(DigestsUtil.SHA1);
        //2.指定密码迭代次数
        hashedCredentialsMatcher.setHashIterations(DigestsUtil.ITERATION);
        //3.生效
        setCredentialsMatcher(hashedCredentialsMatcher);
     }
    /*
     * 认证方法
     * */
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException     {
    
    
        String loginName = (String)authenticationToken.getPrincipal();
        System.out.println(loginName);
        SecurityServiceImpl securityService = new SecurityServiceImpl();
        Map<String, String> map = securityService.findPasswordByUserName(loginName);
        if(map.isEmpty()){
    
    
            throw new AuthenticationException("账号不存在");
        }
        System.out.println(getName());
        String password=map.get("password");
        String salt = map.get("salt");
        return new SimpleAuthenticationInfo(loginName,password, ByteSource.Util.bytes(salt),getName());
    }
    /*
    鉴权方法
    *principal：用户认证凭证信息,就是认证doGetAuthenticationInfo（）方法的返回值的第一个参数
    */
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principal) {
    
    
        //用户凭证信息,当前账户名
        String primaryPrincipal = (String)principal.getPrimaryPrincipal();
        //从数据库中查询用户的角色和权限
        SecurityServiceImpl securityService = new SecurityServiceImpl();
        List<String> roles = securityService.findRoleByUserName(primaryPrincipal);
        List<String> permissions = securityService.findPermissionByUserName(primaryPrincipal);
        //构建资源校验对象
        SimpleAuthorizationInfo authorizationInfo = new SimpleAuthorizationInfo();
        authorizationInfo.addRoles(roles);
        authorizationInfo.addStringPermissions(permissions);
        return authorizationInfo;
    }
}

【3】编写测试代码

    @Test
	public Subject login(){
    
    
		//1.导入ini配置创建工厂
		IniSecurityManagerFactory factory = new IniSecurityManagerFactory("classpath:shiro.ini");
		//2.工厂构建安全构建器
		SecurityManager securityManager = factory.getInstance();
		//3.通过工具类让安全构建器生效
		SecurityUtils.setSecurityManager(securityManager);
		//4.通过工具获取subject主体
		Subject subject = SecurityUtils.getSubject();
		System.out.println(subject);
		//5.构建账号和密码
		UsernamePasswordToken usernamePasswordToken = new UsernamePasswordToken("pinkhub", "123456");
		//6.使用subject登录
		subject.login(usernamePasswordToken);
		return subject;
	}
@Test
public void testRole(){
    
    
		Subject subject = login();
		System.out.println("登陆状态:"+subject.isAuthenticated());
		System.out.println("当前用户是否拥有管理员角色"+subject.hasRole("admin"));
		System.out.println("当前用户是否拥有查看订单的权限"+subject.isPermitted("order:query"));
		try{
    
    
			subject.checkRole("coder");
		}catch(Exception e){
    
    
			System.out.println("当前用户没有coder角色");
		}
}

【4】运行截图

第五章 项目实战

登录、注册、用户权限管理

前提：准备user表；导入shiro依赖；导入DigestsUtil.java 、 Result.java 、 ResultCode.java工具类

框架：sprintboot+mybatisPlus+shiro+thymeleaf

项目结构图：

【第0步】准备工作

（1）添加依赖

        <dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
        <!--lombok-->
		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
			<optional>true</optional>
		</dependency>
		<!--mysql-->
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>5.1.49</version>
		</dependency>
		<!--mybatisPlus-->
		<dependency>
			<groupId>com.baomidou</groupId>
			<artifactId>mybatis-plus-boot-starter</artifactId>
			<version>3.4.3.3</version>
		</dependency>
        <!--druid,也可以使用shiro-spring1.4.0-->
		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>druid-spring-boot-starter</artifactId>
			<version>1.2.8</version>
		</dependency>
        <!--shiro-->
		<dependency>
			<groupId>org.apache.shiro</groupId>
			<artifactId>shiro-spring-boot-starter</artifactId>
			<version>1.8.0</version>
		</dependency>
        <!--thymeleaf-->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-thymeleaf</artifactId>
			<version>2.6.1</version>
		</dependency>
       <!--thymeleaf-extras-shiro-->
		<dependency>
			<groupId>com.github.theborakompanioni</groupId>
			<artifactId>thymeleaf-extras-shiro</artifactId>
			<version>2.1.0</version>
		</dependency>

（2）编写配置文件yml

server:
  port: 8847

spring:
  datasource:
    druid:
      username: root
      password: 123456
      url: jdbc:mysql://localhost:3306/books
      #url: jdbc:mysql://localhost:3306/books?useUnicode=true&&characterEncoding=utf-8&&useSSL=false&serverTimezone=GMT%2b8

mybatis-plus:
  configuration:
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl

【第一步】编写User实体类

@Data
@ToString
@NoArgsConstructor
@AllArgsConstructor
@TableName("tb_user")
public class User implements Serializable {
    
    
    @TableId(value = "id",type = IdType.AUTO)
    public Integer id;
    
    @TableField("account")
    public String account;
    @TableField("real_name")
    public String realName;
    @TableField("password")
    public String password;
    @TableField("salt")
    public String salt;
    @TableField("title")
    public String title;
    @TableField("status")
    public Integer status;
    @TableField("user_id")
    public String userId;
    @TableField("perms")
    public String perms;
}

【第二步】编写mapper层

@Mapper
public interface UserMapper extends BaseMapper<User> {
    
    }

【第三步】编写service层

---------------------------------------UserService.java-------------------------------------------------------------------------
public interface UserService extends IService<User> {
    
    }

---------------------------------------UserServiceImpl.java---------------------------------------------------------------------
@Service
public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements UserService {
    
    }

【第四步】编写controller

Application.java

@Controller
public class AppplicationController {
    
    
    @RequestMapping({
    
    "/","/index"})
    public String index(Model model){
    
    
        model.addAttribute("msg","hello,shiro");
        return "login";
    }
}

UserController.java

@RequestMapping("/user/")
@Controller
public class UserControlller {
    
    
    @Autowired
    public UserService userService;
    @RequestMapping("toRegister")
    public String toRegister(){
    
    
        return "register";
    }
    @PostMapping("register")
    public String register(HttpServletRequest request, Model model){
    
    
        String account = request.getParameter("account");
        String _password = request.getParameter("password");
        Map<String, String> info = DigestsUtil.entryptPassword(_password);
        String password = info.get("password");
        String salt = info.get("salt");
        QueryWrapper<User> wrapper = new QueryWrapper<>();
        wrapper.eq("account",account);
        User userDB = userService.getOne(wrapper);
        if(userDB!=null){
    
    
            model.addAttribute("msg","账号已存在");
            return "register";
        }else{
    
    
            User user = new User();
            user.setAccount(account);
            user.setPassword(password);
            user.setSalt(salt);
            user.setRealName("pinkhub");
            user.setStatus(1);
            Random random = new Random();
            user.setUserId(Integer.toString(random.nextInt(1000)));
            user.setTitle("普通用户");
            user.setPerms("query,update");
            userService.save(user);
            return "login";
        }
    }
    @PostMapping("login")
    public String login(String account,String password, Model model){
    
    
        UsernamePasswordToken token = new UsernamePasswordToken(account, password);
        Subject subject = SecurityUtils.getSubject();
        try{
    
    
            subject.login(token);
            return "index";
        }catch(UnknownAccountException e){
    
    
            model.addAttribute("msg","账号不正确");
            return "login";
        }catch(IncorrectCredentialsException e){
    
    
            model.addAttribute("msg","密码错误");
            return "login";
        }
    }
    @RequestMapping("add")
    public String add(){
    
    
        return "/user/add";
    }
    @RequestMapping("edit")
    public String edit(){
    
    
        return "/user/edit";
    }
    @RequestMapping("noAuth")
    public String noAuth(){
    
    
        return "noAuth";
    }
    @RequestMapping("toLogin")
    public String toLogin(){
    
    
        return "login";
    }

【第五步】编写realm

ShiroDBRealm.java

public class ShiroDBRealm extends AuthorizingRealm {
    
    
   @Autowired
   public UserService userService;

   public ShiroDBRealm(){
    
    
      //指定密码匹配方式
      HashedCredentialsMatcher matcher = new HashedCredentialsMatcher(DigestsUtil.SHA1);
      //指定密码迭代次数
      matcher.setHashIterations(DigestsUtil.ITERATION);
      //匹配生效
      setCredentialsMatcher(matcher);
   }
   /**
    * 认证
    * @param token
    * @return
    * @throws AuthenticationException
    */
   @Override
   protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
    
    
      System.out.println("执行了doGetAuthenticationInfo（）方法");
      UsernamePasswordToken tk=(UsernamePasswordToken) token;
      QueryWrapper<User> wrapper = new QueryWrapper<User>();
      wrapper.eq("account",tk.getUsername());
      User user = userService.getOne(wrapper);
      if(user==null){
    
    
         return null;
      }
      Subject subject = SecurityUtils.getSubject();
      Session session = subject.getSession();
      session.setAttribute("loginUser",user);
      return new SimpleAuthenticationInfo(user,user.getPassword(), ByteSource.Util.bytes(user.getSalt()),getName());
   }
   /**
    * 授权
    * @param principal为认证返回的第一个参数，user
    * @return
    */
   @Override
   protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principal) {
    
    
      System.out.println("执行了doGetAuthorizationInfo()方法");
      SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
      Subject subject = SecurityUtils.getSubject();
      //认证成功后，返回信息的第一个参数
      User user = (User)subject.getPrincipal();
      System.out.println(user);
      List<String> permList = new ArrayList<>();
      String[] perms = user.getPerms().split(",");
      for(String perm:perms){
    
    
         permList.add(perm);
      }
      info.addStringPermissions(permList);
      return info;
   }
}

【第六步】编写config

ShiroConfig.java

@Configuration
public class ShiroConfig {
    
    
    /**
     * 创建ShiroDBRealm交给spring容器
     * @return
     */
    @Bean("shiroDBRealm")
    public ShiroDBRealm shiroDBRealm() {
    
    
        return new ShiroDBRealm();
    }
    /**
     * 安全管理器
     * @param userRealm
     * @return
     */
    @Bean(name = "securityManager")
    public DefaultWebSecurityManager defaultWebSecurityManager(@Qualifier("shiroDBRealm") ShiroDBRealm userRealm) {
    
    
        DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
        securityManager.setRealm(userRealm);
        return securityManager;
    }

    /**
     * 拦截器--拦截请求
     * 常用的过滤器：
     * anno:无需认证即可访问
     * authc:必须认证才能访问
     * perms: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
     * @param securityManager
     * @return
     */
    @Bean
    public ShiroFilterFactoryBean shiroFilterFactoryBean(@Qualifier("securityManager") DefaultWebSecurityManager securityManager) {
    
    
        ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();
        //拦截
        HashMap<String, String> filterMap = new HashMap<>();
        //filterMap.put("/user/login", "anon");
        filterMap.put("/user/add", "perms[add]");
        filterMap.put("/user/edit", "perms[update]");
        shiroFilterFactoryBean.setFilterChainDefinitionMap(filterMap);
        //没通过验证，触发登录拦截请求，跳转登陆页面
        shiroFilterFactoryBean.setLoginUrl("/user/toLogin");
        //触发未认证请求，跳转未授权页面
        shiroFilterFactoryBean.setUnauthorizedUrl("/user/noAuth");
        shiroFilterFactoryBean.setSecurityManager(securityManager);
        return shiroFilterFactoryBean;
    }
    //整合ShiroDialect:用于整合shiro thymeleaf
    @Bean
    public ShiroDialect getShiroDialect(){
    
    
        return new ShiroDialect();
    }
}

【第七步】编写前端页面

index.html

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml" xmlns:shiro="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>shiro</title>
    <style>
        #header{
      
      
            height: 75px;
        }
    </style>
</head>
<body>
<div id="header">
    <img th:src="@{../apache-shiro-logo.png}" style="height: 100%">
</div>
<h1>首页</h1>
<p th:text="${msg}" style="color: red"></p>
<hr>
<div th:if="${session.loginUser==null}">
    <a th:href="@{/user/toLogin}">登录</a>
</div>
<div shiro:hasPermission="add">
    <a th:href="@{/user/add}" style="text-decoration: none">添加用户</a>
    <span>|</span>
</div>
<div shiro:hasPermission="update">
    <a th:href="@{/user/edit}" style="text-decoration: none">修改用户</a>
</div>
</body>
</html>

login.html

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>shiro</title>
    <style>
        #login_form{
      
      
            display: block;
            position: absolute;
            transform: translate(-50%, -61.8%);
            /*左右方向的位置为50%, 上下方向的位置为黄金分割比例0.618*/
            left: 50%;
            top: 50%;
            width: 450px;
        }
        #header{
      
      
            height: 75px;
        }
    </style>
</head>
<body>
<div id="header">
    <img th:src="@{../apache-shiro-logo.png}" style="height: 100%">
</div>
<div id="login">
    <h1>登陆页面</h1>
    <div id="tips">
        <p th:text="${msg}" style="color: red"></p>
    </div>
    <hr>
    <div id="login_form">
        <form action="/user/login"  method="post">
            账号：<input type="text" name="account"/><br><br>
            密码：<input type="password" name="password"/><br><br>
            <a th:href="@{/user/toRegister}" style="text-decoration: none">无账号，去注册</a><br><br>
            <input type="submit" value="提交"/>
        </form>
    </div>
</div>
</body>
</html>

noAuth.html

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>shiro</title>
    <style>
        #header{
      
      
            height: 75px;
        }
    </style>
</head>
<body>
<div id="header">
    <img th:src="@{../apache-shiro-logo.png}" style="height: 100%">
</div>
<p>该用户无权限</p>
</body>
</html>

register.html

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>shiro</title>
    <style>
        #register_form{
      
      
            display: block;
            position: absolute;
            transform: translate(-50%, -61.8%);
            /*左右方向的位置为50%, 上下方向的位置为黄金分割比例0.618*/
            left: 50%;
            top: 50%;
            width: 450px;
        }
        #header{
      
      
            height: 75px;
        }
    </style>
</head>
<body>
<div id="header">
    <img th:src="@{../apache-shiro-logo.png}" style="height: 100%">
</div>
<div id="register">
    <h1>注册页面</h1>
    <div id="tips">
        <p th:text="${msg}" style="color: red"></p>
    </div>
    <hr>
    <div id="register_form">
        <form th:action="@{/user/register}" method="post">
            账号：<input type="text" name="account"/><br><br>
            密码：<input type="password" name="password"/><br><br>
            <input type="submit"/>
        </form>
    </div>
</div>
</body>
</html>

add.html

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>shiro</title>
    <style>
        #header{
      
      
            height: 75px;
        }
    </style>
</head>
<body>
<div id="header">
    <img th:src="@{../apache-shiro-logo.png}" style="height: 100%">
</div>
<h1>shiro权限控制</h1>
<a th:href="@{/user/toLogin}" style="text-decoration: none">退出</a>
<hr>
<p style="color: green">
    增加用户
</p>
</body>
</html>

edit.html

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>shiro</title>
    <style>
        #header{
      
      
            height: 75px;
        }
    </style>
</head>
<body>
<div id="header">
    <img th:src="@{../apache-shiro-logo.png}" style="height: 100%">
</div>
<h1>shiro权限控制</h1>
<a th:href="@{/user/toLogin}" style="text-decoration: none">退出</a>
<hr>
<p style="color: green">
    修改用户
</p>
</body>
</html>

项目截图

账号：00

密码：000000 权限：update

---

账号：qiang

密码：000000 权限：add

---

ending.....