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  • 7.2 Shiro

    一.Shiro简介

    1.什么是Shiro

    • Apache Shiro是一个Java安全(权限)框架

    • Shiro可以非常容易的开发出足够好的应用,其不仅可以用在JavaSE环境,也可以用在JavaEE环境。

    • Shiro可以完成认证、授权、加密、会话管理、Web集成以及缓存等

    • 下载地址:http://shiro.apache.org

    2.功能

    • Authentication:身份认证、登录、验证用户是不是拥有相应的身份

    • Authorization:授权,即权限验证,验证某个已认证用户是否拥有某个权限,判断用户能否进行什么操作,例如:验证某个用户是否拥有某个角色,或者细粒度的验证某个用户对某个资源是否具有某个权限

    • Session Manager:会话管理,即用户登录后就是第一次会话,在没有退出之前,它的所有信息都在绘画中;会话可以是普通的JavaSE环境,也可以是Web环境

    • Cryptography:加密,保护数据的安全性,如密码加密存储在数据库中,而不是明文存储

    • Web Support:Web支持,可以非常容易集成到Web环境

    • Caching:缓存,比如用户登录后,其用户信息,拥有的角色、权限不比每次去查,这样可以提高效率

    • Concurrency:Shiro支持多线程应用的并发验证,即在一个线程中开启另一个线程,能把权限自动的传播过去

    • Testing:提供测试支持

    • Run As:允许一个用户假装为另一个用户(如果他们允许)的身份进行访问

    • Remember Me:记住我,即一次登录后下次就不用再登录了

    3.Shiro架构(外部)

    (1)从应用程序角度来观察如何使用shiro完成工作:

    (2)核心对象

    • subject:应用代码直接交互的对象是Subject,也就是说Shiro的对外API核心就是Subject,Subject代表了当前的用户,这个用户不一定是一个具体的人,与当前应用交互的任何东西都是Subject,如网络爬虫、机器人等,与Subject的所有交互都会委托给SecurityManager,Subject其实是一个门面,SecurityManager才是实际的执行者

    • SecurityManager:安全管理器,即所有与安全有关的操作都会与SecurityManager交互,并且它管理着所有的Subject,可以看出它是Shiro的核心,它负责与Shiro的其他组件交互,相当于SpringMVC的DispatcherServlet的角色

    • Realm:Shiro从Realm获取安全数据(如用户,角色,权限),就是说SecurityManager要验证用户身份,需要从Realm获取相应的用户进行比较,来确定用户的身份是否合法,也需要从Realm得到用户相应的角色、权限进行验证用户的操作是否能够进行,可以把Realm看成DataSource。

    4.Shiro框架(内部)

    二.Shiro快速开始

    1.步骤

    • 搭建普通maven项目(略)

    • pom.xml中导入依赖

    • 编写配置文件shiro.ini和log4j.propreties

    • 编写Java类

    • 测试执行

    2.pom.xml中导入依赖

    <dependencies>
        <dependency>
            <groupId>org.apache.shiro</groupId>
            <artifactId>shiro-core</artifactId>
            <version>1.4.1</version>
        </dependency>
    
        <!-- configure logging -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>jcl-over-slf4j</artifactId>
            <version>1.7.21</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.7.21</version>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
    </dependencies>

    3.编写配置文件shiro.ini和log4j.propreties放到resources目录下

    shiro.ini

    [users]
    # user 'root' with password 'secret' and the 'admin' role
    root = secret, admin
    # user 'guest' with the password 'guest' and the 'guest' role
    guest = guest, guest
    # user 'presidentskroob' with password '12345' ("That's the same combination on
    # my luggage!!!" ;)), and role 'president'
    presidentskroob = 12345, president
    # user 'darkhelmet' with password 'ludicrousspeed' and roles 'darklord' and 'schwartz'
    darkhelmet = ludicrousspeed, darklord, schwartz
    # user 'lonestarr' with password 'vespa' and roles 'goodguy' and 'schwartz'
    lonestarr = vespa, goodguy, schwartz
    
    # -----------------------------------------------------------------------------
    # Roles with assigned permissions
    # 
    # Each line conforms to the format defined in the
    # org.apache.shiro.realm.text.TextConfigurationRealm#setRoleDefinitions JavaDoc
    # -----------------------------------------------------------------------------
    [roles]
    # 'admin' role has all permissions, indicated by the wildcard '*'
    admin = *
    # The 'schwartz' role can do anything (*) with any lightsaber:
    schwartz = lightsaber:*
    # The 'goodguy' role is allowed to 'drive' (action) the winnebago (type) with
    # license plate 'eagle5' (instance specific id)
    goodguy = winnebago:drive:eagle5

    log4j.propreties

    log4j.rootLogger=INFO, stdout
    
    log4j.appender.stdout=org.apache.log4j.ConsoleAppender
    log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
    log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - %m %n
    
    # General Apache libraries
    log4j.logger.org.apache=WARN
    
    # Spring
    log4j.logger.org.springframework=WARN
    
    # Default Shiro logging
    log4j.logger.org.apache.shiro=INFO
    
    # Disable verbose logging
    log4j.logger.org.apache.shiro.util.ThreadContext=WARN
    log4j.logger.org.apache.shiro.cache.ehcache.EhCache=WARN

    4.编写Java类

    import org.apache.shiro.SecurityUtils;
    import org.apache.shiro.authc.*;
    import org.apache.shiro.config.IniSecurityManagerFactory;
    import org.apache.shiro.mgt.SecurityManager;
    import org.apache.shiro.session.Session;
    import org.apache.shiro.subject.Subject;
    import org.apache.shiro.util.Factory;
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    
    
    public class Quickstart {
    
        private static final transient Logger log = LoggerFactory.getLogger(Quickstart.class);
    
    
        public static void main(String[] args) {
    
    
            // 读取配置文件
            Factory<SecurityManager> factory = new IniSecurityManagerFactory("classpath:shiro.ini");
            SecurityManager securityManager = factory.getInstance();
            SecurityUtils.setSecurityManager(securityManager);
    
    
            //获取当前的用户对象Subject
            Subject currentUser = SecurityUtils.getSubject();
    
            //通过当前用户对象拿到Session
            Session session = currentUser.getSession();
            session.setAttribute("someKey", "aValue");
            String value = (String) session.getAttribute("someKey");
            if (value.equals("aValue")) {
                log.info("Retrieved the correct value! [" + value + "]");
            }
    
            //判断当前的用户对象是否被认证
            if (!currentUser.isAuthenticated()) {
                //Token:令牌
                UsernamePasswordToken token = new UsernamePasswordToken("lonestarr", "vespa");
                token.setRememberMe(true);  //记住我
                try {
                    currentUser.login(token);   //执行登录操作
                } catch (UnknownAccountException uae) {
                    log.info("There is no user with username of " + token.getPrincipal());
                } catch (IncorrectCredentialsException ice) {
                    log.info("Password for account " + token.getPrincipal() + " was incorrect!");
                } catch (LockedAccountException lae) {
                    log.info("The account for username " + token.getPrincipal() + " is locked.  " +
                            "Please contact your administrator to unlock it.");
                }
                // ... catch more exceptions here (maybe custom ones specific to your application?
                catch (AuthenticationException ae) {
                    //unexpected condition?  error?
                }
            }
    
            //say who they are:
            //print their identifying principal (in this case, a username):
            log.info("User [" + currentUser.getPrincipal() + "] logged in successfully.");
    
            //test a role:
            if (currentUser.hasRole("schwartz")) {
                log.info("May the Schwartz be with you!");
            } else {
                log.info("Hello, mere mortal.");
            }
    
            //粗粒度
            //test a typed permission (not instance-level)
            if (currentUser.isPermitted("lightsaber:wield")) {
                log.info("You may use a lightsaber ring.  Use it wisely.");
            } else {
                log.info("Sorry, lightsaber rings are for schwartz masters only.");
            }
    
            //细粒度
            //a (very powerful) Instance Level permission:
            if (currentUser.isPermitted("winnebago:drive:eagle5")) {
                log.info("You are permitted to 'drive' the winnebago with license plate (id) 'eagle5'.  " +
                        "Here are the keys - have fun!");
            } else {
                log.info("Sorry, you aren't allowed to drive the 'eagle5' winnebago!");
            }
    
            //注销
            //all done - log out!
            currentUser.logout();
    
            //结束
            System.exit(0);
        }
    }

    5.测试执行

    6.主要的代码分析

    Subject currentUser = SecurityUtils.getSubject();//获取当前的用户对象Subject
    Session session = currentUser.getSession();//通过当前用户对象拿到Session
    currentUser.isAuthenticated();//判断当前的用户对象是否被认证
    token.setRememberMe(true);  //记住我
    currentUser.login(token);   //执行登录操作
    token.getPrincipal();//获得token认证
    currentUser.getPrincipal();//获得当前用户的认证
    currentUser.hasRole("schwartz");//是否拥有xxx角色
    currentUser.isPermitted("lightsaber:wield");//是否拥有xxx权限
    currentUser.logout();//注销

    三.SpringBoot集成Shiro

    1.步骤

    • 搭建springboot项目环境带mvc和thymeleaf(略)

    • pom.xml中导入依赖

    • 编写Java Config配置

    • 编写控制器

    • 编写页面

    2.pom.xml中导入依赖

    <!--shiro整合spring的包-->
    <dependency>
        <groupId>org.apache.shiro</groupId>
        <artifactId>shiro-spring</artifactId>
        <version>1.5.1</version>
    </dependency>

    3.编写Java Config配置

     添加config包,在config包中添加UserRealm.java

    • 用于授权和认证

    import org.apache.shiro.authc.AuthenticationException;
    import org.apache.shiro.authc.AuthenticationInfo;
    import org.apache.shiro.authc.AuthenticationToken;
    import org.apache.shiro.authz.AuthorizationInfo;
    import org.apache.shiro.realm.AuthorizingRealm;
    import org.apache.shiro.subject.PrincipalCollection;
    
    //自定义的UserRealm需要继承AuthorizingRealm
    public class UserRealm extends AuthorizingRealm {
        @Override
        protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
    
            System.out.println("执行了=>授权doGetAuthorizationInfo");
            return null;
        }
    
        @Override
        protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
            System.out.println("执行了=>认证doGetAuthorizationInfo");
            return null;
        }
    }

    在config包中添加ShiroConfig.java

    • 创建三个bean用于Shiro管理

    import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
    import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
    import org.springframework.beans.factory.annotation.Qualifier;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    
    @Configuration
    public class ShiroConfig {
    
        /*
            Subject: 用户
            SecurityManager:管理所有用户
            Realm:连接数据
        */
    
        //ShiroFilterFactoryBean
        @Bean
        public ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier("securityManager") DefaultWebSecurityManager defaultWebSecurityManager){
    
            ShiroFilterFactoryBean bean = new ShiroFilterFactoryBean();
            //设置安全管理器
            bean.setSecurityManager(defaultWebSecurityManager);
            return bean;
        }
    
    
        //DefaultWebSecurityManager
        @Bean(name = "securityManager")
        public DefaultWebSecurityManager getDefaultWebSecurityManager(@Qualifier("userRealm") UserRealm userRealm){
            DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
    
            //关联userRealm
            securityManager.setRealm(userRealm);
            return securityManager;
        }
    
    
    
        //创建Realm对象,需要自定义的Realm对象
        @Bean
        public UserRealm userRealm(){
            return new UserRealm();
        }
    
    }

    4.编写控制器

    • 添加controller包并在其中添加MyController.java

    import org.springframework.stereotype.Controller;
    import org.springframework.ui.Model;
    import org.springframework.web.bind.annotation.RequestMapping;
    
    @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";
        }
    }

    5.编写页面

    index.html

    <!DOCTYPE html>
    <html lang="en" xmlns:th="http://www.thymeleaf.org">
    <head>
        <meta charset="UTF-8">
        <title>index</title>
    </head>
    <body>
    <h1>首页</h1>
    
    <p th:text="${msg}"></p>
    
    <hr>
    
    <a th:href="@{/user/add}">add</a> |  <a th:href="@{/user/update}">update</a>
    </body>
    </html>
    View Code

    add.html

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

    update.html

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

    login.html

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>login</title>
    </head>
    <body>
    
    <h1>登录</h1>
    
    <hr>
    
    <form action="">
        <p>用户名:<input type="text" name="username"></p>
        <p>密码:<input type="text" name="password"></p>
        <p><input type="submit"></p>
    </form>
    </body>
    </html>
    View Code

    基本环境搭建成功!

    四.Shiro实现登录拦截

    1.修改ShiroConfig.java文件

    • 设置对user路径下的所有文件必须认证才能访问

    • 如果认证失败跳转登录页

    //ShiroFilterFactoryBean
    @Bean
    public ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier("securityManager") DefaultWebSecurityManager defaultWebSecurityManager){
    
        ShiroFilterFactoryBean bean = new ShiroFilterFactoryBean();
        //设置安全管理器
        bean.setSecurityManager(defaultWebSecurityManager);
    
        /*
            anno: 无需认证就可以登录
            authc:必须认证了才能访问
            user:必须拥有记住我功能才能访问
            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
         */
    
        Map<String,String> filterMap = new LinkedHashMap<>();
    
    //        filterMap.put("/user/add","authc");
    //        filterMap.put("/user/update","authc");
        filterMap.put("/user/*","authc");
    
        bean.setFilterChainDefinitionMap(filterMap);
    
        //设置登录的请求
        bean.setLoginUrl("/toLogin");
    
        return bean;
    }

    五.Shiro实现用户认证集成Mybatis

    1.步骤

    • pom.xml中添加依赖

    • 连接数据库配置pojo,mapper,service层以及xxxMapper.xml(略)

    • 修改登录页面

    • 编写application.yml

    • 控制其中添加方法

    • UserRealm.java中修改认证方法

    2.pom.xml中添加依赖

    • MySQL、Mybatis、Druid、log4j、lombok

    <!--MySQL-->
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <scope>runtime</scope>
    </dependency>
    
    <!-- 引入 myBatis,这是 MyBatis官方提供的适配 Spring Boot 的,而不是Spring Boot自己的-->
    <dependency>
        <groupId>org.mybatis.spring.boot</groupId>
        <artifactId>mybatis-spring-boot-starter</artifactId>
        <version>2.1.0</version>
    </dependency>
    
    <!--Druid-->
    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>druid</artifactId>
        <version>1.1.21</version>
    </dependency>
    
    <!--Log4j-->
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.17</version>
    </dependency>
    
    <!--lombok-->
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <optional>true</optional>
    </dependency>
    View Code

    3.修改登录页面

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

    4.编写application.yml

    • 注意数据库连接以及Mybatis配置的路径

    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
    
    #指定myBatis的核心配置文件与Mapper映射文件
    mybatis:
      mapper-locations: classpath:mapper/*.xml
      # 注意:对应实体类的路径
      type-aliases-package: ustc.wzh.pojo
    View Code

    5.控制其中添加方法

    • 此方法接收表单提交的用户名和密码

    • 将用户名和密码生成Token交给subject处理会进入验证方法中判断最后返回给此方法,如果验证成功进入index页面失败则还是login页面

    @RequestMapping("/login")
    public String login(String username, String password, Model model) {
    
        //获得当前的用户
        Subject subject = SecurityUtils.getSubject();
    
        //封装用户的登录数据
        UsernamePasswordToken token = new UsernamePasswordToken(username, password);
    
        try {
            //执行登录的方法
            subject.login(token);
            return "index";
        } catch (UnknownAccountException e) {
            //用户名不存在
            model.addAttribute("msg", "用户名错误");
            return "login";
        } catch (IncorrectCredentialsException e) {
            //密码不存在
            model.addAttribute("msg", "密码错误");
            return "login";
        }
    
    }

    6.UserRealm.java中修改认证方法

    • 需要先自动装配业务层才能拿到用户对象

    @Autowired
    UserService userService;
    • 从方法参数中获得的Token中拿出用户名,然后在数据库中查找,最后判断用户是否不存在,如果不存在返回null则控制器就会异常处理,存在就跳转
    • 此处还可以设置加密方式(https://blog.csdn.net/qq_21046965/article/details/90105915)
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
        System.out.println("执行了=>认证doGetAuthorizationInfo");
    
        UsernamePasswordToken userToken = (UsernamePasswordToken) authenticationToken;
    
        //连接数据库
        User user = userService.queryUserByName(userToken.getUsername());
    
        if (user == null) {
            return null;    //没有获得用户则返回null经过ShiroConfig类中的方法会抛出UnknownAccountException
        }
    
        //还可以设置加密方式
        return new SimpleAuthenticationInfo("", user.getPwd(), "");
    }

    六.Shiro实现用户授权

    1.步骤

    • 控制器添加未授权跳转方法

    • UserRealm.java修改授权方法

    • ShiroConfig.java中修改拦截器方法

    2.控制器添加未授权跳转方法

    @RequestMapping("/unauth")
    @ResponseBody
    public String unauthorized(){
        return "未经授权无法访问";
    }

    3.UserRealm.java修改授权方法

    • 先修改认证方法返回参数添加一个user用于传递用户对象

    return new SimpleAuthenticationInfo(user, user.getPwd(), "");
    • 修改授权方法获得数据库中用户的授权

    //授权
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
    
        System.out.println("执行了=>授权doGetAuthorizationInfo");
    
        SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
    
        //获得当前的登录对象
        Subject subject = SecurityUtils.getSubject();
        User currentUser = (User) subject.getPrincipal(); //获得认证方法中保存的登录对象
    
        //设置当前用户对象权限
        /*
            需要在数据库中设置一个权限的属性来控制
            此处省去麻烦就直接通过用户名来设置权限
        */
        //给root授权
        if (Objects.equals(currentUser.getName(),"root")){
            info.addStringPermission("user:add"); //添加add权限
            System.out.println("root用户授权add");
        }
    
        //给张三授权
        if (Objects.equals(currentUser.getName(),"张三")){
            info.addStringPermission("user:update"); //添加add权限
            System.out.println("张三用户授权update");
    
        }
    
        return info;
    }

    4.ShiroConfig.java中修改拦截器方法

    • 对于不同权限进行拦截

    //ShiroFilterFactoryBean
    @Bean
    public ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier("securityManager") DefaultWebSecurityManager defaultWebSecurityManager) {
    
        ShiroFilterFactoryBean bean = new ShiroFilterFactoryBean();
        //设置安全管理器
        bean.setSecurityManager(defaultWebSecurityManager);
    
        /*
            anno: 无需认证就可以登录
            authc:必须认证了才能访问
            user:必须拥有记住我功能才能访问
            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
         */
    
        //拦截
        Map<String, String> filterMap = new LinkedHashMap<>();
    
        //        filterMap.put("/user/add","authc");
        //        filterMap.put("/user/update","authc");
    
    
    
        //只有权限为user:add的用户才可以访问user/add
        filterMap.put("/user/add","perms[user:add]");
        //只有权限为user:update的用户才可以访问user/update
        filterMap.put("/user/update","perms[user:update]");
    
        //只有通过认证的用户才可以访问user目录下的文件
        filterMap.put("/user/*", "authc");
    
        //设置拦截链
        bean.setFilterChainDefinitionMap(filterMap);
    
        //设置未授权的页面
        bean.setUnauthorizedUrl("/unauth");
    
        //设置登录的请求
        bean.setLoginUrl("/toLogin");
    
        return bean;
    }

    5.测试成功

    七.Shiro整合Thymeleaf

    1.步骤:通过判断用户的权限显示不同的页面

    • pom.xml中导入配置

    • ShiroConfig.java添加一个shiro与thymeleaf结合使用的bean

    • 修改index页面

    2.pom.xml中导入配置

    <!--thymeleaf和shiro整合-->
    <dependency>
        <groupId>com.github.theborakompanioni</groupId>
        <artifactId>thymeleaf-extras-shiro</artifactId>
        <version>2.0.0</version>
    </dependency>

    3.ShiroConfig.java添加一个shiro与thymeleaf结合使用的bean

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

    4.修改index页面

    • 添加对thymeleaf和shiro的约束:

       xmlns:th="http://www.thymeleaf.org" xmlns:shiro="http://www.thymeleaf.org/thymeleaf-extras-shiro" 

    • 判断是否登录: th:if="${session.loginUser == null}" 

    • 判断是否有权限: shiro:hasPermission="user:add" 

    • <!DOCTYPE html> <html lang="en" xmlns:th="http://www.thymeleaf.org" xmlns:shiro="http://www.thymeleaf.org/thymeleaf-extras-shiro"> <head> <meta charset="UTF-8"> <title>index</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> </body> </html>

    5.测试成功!

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  • 原文地址:https://www.cnblogs.com/zhihaospace/p/12416885.html
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