shiro(三)——springboot整合shiro

该整合项目完全参照狂神说java 的《springboot整合shiro框架》教学视频完成，如有不懂的地方可以查看该教学视频。

    <dependencies>

        <!--
        subject 用户
        securityManager 管理所有用户
        realm  连接数据
        -->

        <!--连接数据库的依赖-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.15</version>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.13</version>
        </dependency>

        <!--引入mybatis,这是mybatis官方提供的适配springboot的，而不是springboot自己的-->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.1.2</version>
        </dependency>

        <!--不想书写setter、getter方法，导入此依赖-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.16.22</version>
        </dependency>

        <!--shiro整合spring的包-->
        <dependency>
            <groupId>org.apache.shiro</groupId>
            <artifactId>shiro-spring</artifactId>
            <version>1.4.2</version>
        </dependency>


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

        <!--导入thymeleaf依赖-->
        <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>

        <!--shiro-thymeleaf整合-->
        <dependency>
            <groupId>com.github.theborakompanioni</groupId>
            <artifactId>thymeleaf-extras-shiro</artifactId>
            <version>2.0.0</version>
        </dependency>
    </dependencies>
    
    <repositories>
        <repository>
            <id>aliyun-repos</id>
            <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>
    <pluginRepositories>
        <pluginRepository>
            <id>aliyun-plugin</id>
            <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </pluginRepository>
    </pluginRepositories>

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

2. application.yml设置连接数据库的相关配置

spring:
  datasource:
    username: root
    password: 123456
    #?serverTimezone=UTC解决时区的报错
    url: jdbc:mysql://localhost:3306/mybatis?serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8
    driver-class-name: com.mysql.cj.jdbc.Driver
    type: com.alibaba.druid.pool.DruidDataSource

    #Spring Boot 默认是不注入这些属性值的，需要自己绑定
    #druid 数据源专有配置
    initialSize: 5
    minIdle: 5
    maxActive: 20
    maxWait: 60000
    timeBetweenEvictionRunsMillis: 60000
    minEvictableIdleTimeMillis: 300000
    validationQuery: SELECT 1 FROM DUAL
    testWhileIdle: true
    testOnBorrow: false
    testOnReturn: false
    poolPreparedStatements: true

    #配置监控统计拦截的filters，stat:监控统计、log4j：日志记录、wall：防御sql注入
    #如果允许时报错  java.lang.ClassNotFoundException: org.apache.log4j.Priority
    #则导入 log4j 依赖即可，Maven 地址：https://mvnrepository.com/artifact/log4j/log4j
    filters: stat,wall,log4j
    maxPoolPreparedStatementPerConnectionSize: 20
    useGlobalDataSourceStat: true
    connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500

3.index.html

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml?"
      xmlns:shiro="http://www.thymeleaf.org/thymeleaf-extras-shiro" >
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <h1>首页</h1>

    <div th:if="${session.loginUser==null}">
        <a th:href="@{/toLogin}">登录</a>
    </div>

    <p th:text="${msg}"></p>

    <hr>
    <div shiro:hasPermission="user:add">
        <a th:href="@{/user/add}">add</a>
    </div>
    <div shiro:hasPermission="user:update">
        <a th:href="@{/user/update}">update</a>
    </div>

    <a th:href="@{/logout}">注销</a>

</body>
</html>

4.add.html和update.html

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

-------------------------------------------------

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

5.login.html

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml?">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>登录</h1>
<hr>
<p th:text="${msg}" style="color:red;"></p>
<form th:action="@{/login}">
    用户名：<input type="text" name="username"><br>
    密码：<input type="password" name="password">
    <br>
    <input type="submit" name="提交">
</form>
</body>
</html>

6.MyController.java

@Controller
public class MyController {

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

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

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

    @RequestMapping("/toLogin")
    public String toLogin(){
        return "login";
    }

    @RequestMapping("/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，如果没有异常就说明ok了
            return "index";
        }catch (UnknownAccountException e){ //用户名不存在
            model.addAttribute("msg","用户名不存在！");
            return "login";
        }catch (IncorrectCredentialsException e){
            model.addAttribute("msg","密码错误！");
            return "login";
        }
    }

    @RequestMapping("/noauth")
    @ResponseBody
    public String unauthorized(){
        return "未授权无法访问此页面";
    }

    @RequestMapping("/logout")
    public String logout(){
        //获取当前用户
        Subject subject = SecurityUtils.getSubject();
        System.out.println(subject.getSession().getAttribute("loginUser"));
        subject.logout(); // session 会销毁，在SessionListener监听session销毁，清理权限缓存
        System.out.println(subject.getSession().getAttribute("loginUser"));
        System.out.println("执行了退出");
        return "login";
    }
}

7.ShiroConfig.java

@Configuration
public class ShiroConfig {

    //ShiroFilterFactoryBean （第三步:连接到前端）
    @Bean
    public ShiroFilterFactoryBean getShiroFilterBean(@Qualifier("securityManager") DefaultWebSecurityManager defaultWebSecurityManager){
        ShiroFilterFactoryBean bean = new ShiroFilterFactoryBean();
        //设置安全管理器
        bean.setSecurityManager(defaultWebSecurityManager);

        //添加shiro的内置过滤器
        /*
        anon: 无需认证即可访问
        authc: 必须认证才能用
        user: 必须拥有 “记住我” 功能才能用
        perms: 拥有对某个资源的权限才能用
        role: 拥有某个角色权限才能访问
        */

        Map<String,String> filterMap = new LinkedHashMap<>();
        //拦截
        filterMap.put("/user/add","authc");
        filterMap.put("/user/update","authc");
        //也可使用通配符*
        //filterMap.put("/user/*","authc");

        //授权，正常情况下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]");

        bean.setFilterChainDefinitionMap(filterMap);

        //若访问时用户未认证，则跳转至登录页面
        bean.setLoginUrl("/toLogin");
        //若访问时用户未被授权，则跳转至未授权页面
        bean.setUnauthorizedUrl("/noauth");

        return bean;
    }

    //DefaultWebSecurityManager （第二步：管理realm对象）
    @Bean(name="securityManager") //@Bean注解后便被spring托管,不加name属性，默认name值为方法名,这里就加一下吧
    public DefaultWebSecurityManager getDefaultWebSecurityManager(@Qualifier("userRealm") UserRealm userRealm){
        DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
        //关联UserRealm
        securityManager.setRealm(userRealm);
        return securityManager;

    }

    //创建realm对象，需要自定义类 (第一步:创建realm对象)
    @Bean(name="userRealm")  //@Bean注解后便被spring托管,不加name属性，默认name值为方法名,这里就加一下吧
    public UserRealm userRealm(){
        return new UserRealm();
    }

    //整合ShiroDialect:用来整合shiro thymeleaf
    @Bean
    public ShiroDialect getShiroDialect(){
        return new ShiroDialect();
    }
}

8.UserRealm.java

//自定义UserRealm extends AuthorizingRealm
public class UserRealm extends AuthorizingRealm {

    @Autowired
    UserService userService;


    //授权
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
        System.out.println("执行了授权");

        SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
        //info.addStringPermission("user:add");

        //拿到当前登录的对象
        Subject subject = SecurityUtils.getSubject();
        User currentUser = (User) subject.getPrincipal(); //拿到user对象

        info.addStringPermission(currentUser.getPerms());

        return info;
    }

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

        UsernamePasswordToken userToken = (UsernamePasswordToken) token;

        /*
        //用户名、密码  模拟从数据库中获取
        String name = "root";
        String password = "1111";

        if (!userToken.getUsername().equals(name)){
            return null; //抛出异常 UnknownAccountException
        }

        //密码认证，shiro做~
        return new SimpleAuthenticationInfo("",password,"");
        */

        //连接真实数据库
        User user = userService.queryUserByName(userToken.getUsername());
        if (user==null){ //没有这个人
            return null; //抛出异常 UnknownAccountException
        }
        Subject currentSubject = SecurityUtils.getSubject();
        Session session = currentSubject.getSession();
        session.setAttribute("loginUser",user);

        //可以加密： MD5加密   MD5盐值加密
        //密码认证，shiro做~
        return new SimpleAuthenticationInfo(user,user.getPwd(),"");

    }
}

9.UserMapper.java

@Repository
@Mapper
public interface UserMapper {

    public User queryUserByName(String name);

}

10.UserMapper.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.ztx.mapper.UserMapper">
    <select id="queryUserByName" parameterType="String" resultType="User">
        select * from mybatis.user where name=#{name}
    </select>
</mapper>

11.User.java

@Data
@AllArgsConstructor
@NoArgsConstructor
public class User {

    private int id;
    private String name;
    private String pwd;
    private String perms;
}

12.UserService.java和UserServiceImpl.java

public interface UserService {

    public User queryUserByName(String name);

}

-----------------------------------------------------

@Service
public class UserServiceImpl implements UserService{

    @Autowired
    UserMapper userMapper;

    @Override
    public User queryUserByName(String name) {
        return userMapper.queryUserByName(name);
    }
}

13.数据库中的user表

个人对该项目执行流程进行了梳理，如有错误，请指正：

　　1.ShiroConf.java中设置好拦截器，规定哪些页面需要用户具备何种要求才可访问，同时还设置当用户不满足要求时应该跳转至什么页面。对应本项目的代码：

　　2.用户在未认证下，会跳转到登陆页面login.html。输入用户名密码，提交执行controller中的login()方法，该方法内将用户信息封装成token对象，传入subject.login()方法内进行登录验证。对应项目代码：

　　3.执行登录验证时会跳转到UserRealm类，首先执行认证(doGetAuthenticationInfo)：连接数据库判断是否有此人，若没有则返回结果null，若有，则将数据库中的用户信息存储在subject的session中。接着进行密码验证，若验证失败，则将登录不通过返回失败认证信息，反之，返回成功的认证信息，并执行用户授权(doGetAuthorizationInfo)操作，返回授权信息。对应项目代码：

　　认证：