• 依赖导入
<dependencies>
        <!--shiro-core-->
        <dependency>
            <groupId>org.apache.shiro</groupId>
            <artifactId>shiro-core</artifactId>
            <version>1.11.0</version>
        </dependency>
        <!--configure logging-->
        <!--jcl-over-slf4j-->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>jcl-over-slf4j</artifactId>
            <version>2.0.7</version>
        </dependency>
        <!--slf4j-log4j12-->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>2.0.7</version>
        </dependency>
        <!--log4j-->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
    </dependencies>
• resources/log4j.properties
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
• resources/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]
# '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
• Quickstart.java
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;


/**
 * Simple Quickstart application showing how to use Shiro's API.
 *
 * @since 0.9 RC2
 */
public class Quickstart {

    private static final transient Logger log = LoggerFactory.getLogger(Quickstart.class);

    
    public static void main(String[] args) {

        // The easiest way to create a Shiro SecurityManager with configured
        // realms, users, roles and permissions is to use the simple INI config.
        // We'll do that by using a factory that can ingest a .ini file and
        // return a SecurityManager instance:

        // Use the shiro.ini file at the root of the classpath
        // (file: and url: prefixes load from files and urls respectively):
        Factory<SecurityManager> factory = new IniSecurityManagerFactory("classpath:shiro.ini");
        SecurityManager securityManager = factory.getInstance();

        // for this simple example quickstart, make the SecurityManager
        // accessible as a JVM singleton.  Most applications wouldn't do this
        // and instead rely on their container configuration or web.xml for
        // webapps.  That is outside the scope of this simple quickstart, so
        // we'll just do the bare minimum so you can continue to get a feel
        // for things.
        SecurityUtils.setSecurityManager(securityManager);

        // Now that a simple Shiro environment is set up, let's see what you can do:

        // get the currently executing user:
        Subject currentUser = SecurityUtils.getSubject();

        // Do some stuff with a Session (no need for a web or EJB container!!!)
        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 + "]");
        }

        // let's login the current user so we can check against roles and permissions:
        if (!currentUser.isAuthenticated()) {
            UsernamePasswordToken token = new UsernamePasswordToken("lonestarr", "vespa");
            token.setRememberMe(true);
            try {
                currentUser.login(token);
            } 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.");
        }

        //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.");
        }

        //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!");
        }

        //all done - log out!
        currentUser.logout();

        System.exit(0);
    }
}

• 获取当前用户对象subject
Subject currentUser = SecurityUtils.getSubject();
• 通过当前用户，取出session
Session session = currentUser.getSession();
• 判断当前用户是否被认证
if (!currentUser.isAuthenticated()) {
	……
}
• 输出Subject信息，或得当前用户认证
log.info("User [" + currentUser.getPrincipal() + "] logged in successfully.");
• 获取用户是否拥有角色，并输出
if (currentUser.hasRole("schwartz")) {
	……
}
• 获取当前用户权限
if (currentUser.isPermitted("lightsaber:wield")) {
	……
}
• 注销、结束
//注销
        currentUser.logout();
        //结束
        System.exit(0);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) {

        Factory<SecurityManager> factory = new IniSecurityManagerFactory("classpath:shiro.ini");
        SecurityManager securityManager = factory.getInstance();
        SecurityUtils.setSecurityManager(securityManager);

        //获取当前用户对象
        Subject currentUser = SecurityUtils.getSubject();
        //通过当前用户，取出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 + "]");
        }

        //判断当前用户是否被认证
        if (!currentUser.isAuthenticated()) {
            UsernamePasswordToken token = new UsernamePasswordToken("lonestarr", "vespa");
            //token：令牌
            token.setRememberMe(true);
            try {
                //执行登录操作
                currentUser.login(token);
                //Subject异常
            } catch (UnknownAccountException uae) {
                log.info("There is no user with username of " + token.getPrincipal());
                //令牌不对应等
            } catch (IncorrectCredentialsException ice) {
                log.info("Password for account " + token.getPrincipal() + " was incorrect!");
                //账号被锁定问题,登陆次数过多
            } catch (LockedAccountException lae) {
                log.info("The account for username " + token.getPrincipal() + " is locked.  " +
                        "Please contact your administrator to unlock it.");
            }
            //其他异常或者大的异常,自定义异常
            catch (AuthenticationException ae) {
            }
        }

        //输出Subject信息，或得当前用户认证
        log.info("User [" + currentUser.getPrincipal() + "] logged in successfully.");

        //测试角色,如果角色拥有权限,则输出权限信息
        if (currentUser.hasRole("schwartz")) {
            log.info("May the Schwartz be with you!");
        } else {
            log.info("Hello, mere mortal.");
        }

        //粗粒度
        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
        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
        currentUser.logout();
        //结束
        System.exit(0);
    }
}

• 依赖导入
<dependencies>
        <!--shiro-springboot-->
        <dependency>
            <groupId>org.apache.shiro</groupId>
            <artifactId>shiro-spring-boot-starter</artifactId>
            <version>1.11.0</version>
        </dependency>

        <!--thymeleaf-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <!--web-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--test-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>
• Shiro 框架的配置文件（ShiroConfig）
package com.wei.config;

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;

import java.util.LinkedHashMap;
import java.util.Map;

@Configuration
public class ShiroConfig {

    //ShiroFilterFactoryBean
    @Bean(name = "shiroFilterFactoryBean")
    public ShiroFilterFactoryBean shiroFilterFactoryBean(@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，才能访问
         * user:必须拥有rember me 功能才能使用
         * perms:必须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
         * */

        //登录拦截器
        Map<String, String> filterMap = new LinkedHashMap<>();
        //filterMap.put("/user/*","authc");
        filterMap.put("/user/add","authc");
        filterMap.put("/user/update","authc");
        bean.setFilterChainDefinitionMap(filterMap);
        //设置登录请求
        bean.setLoginUrl("/toLogin");

        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;
    }

    //Realm对象
    @Bean
    public UserRealm userRealm(){
        return new UserRealm();
    }
}
• login.html
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<h1>登录</h1>

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

<form th:action="@{/login}">
    <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>
• index.html
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>wei_shuo</title>
</head>
<body>
<div>
    <span><h1>首页</h1></span>
    <p th:text="${msg}"></p>
    <hr>
    <a th:href="@{/user/add}"><h1>add</h1></a>  <a th:href="@{/user/update}"><h1>update</h1></a>
</div>
</body>
</html>
• add.html
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>add User</h1>
</body>
</html>
• update.html
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>update User</h1>
</body>
</html>
• MyController.java
package com.wei.controller;

import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.IncorrectCredentialsException;
import org.apache.shiro.authc.UnknownAccountException;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.subject.Subject;
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.html";
    }

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

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

    @RequestMapping("/login")
    public String login(String username, String password, Model model) {
        //获取当前的用户
        Subject subject = SecurityUtils.getSubject();
        //封装用户的登录数据
        UsernamePasswordToken token = new UsernamePasswordToken(username, password);
        //执行登录方法，如果无异常则成功
        try {
            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";
        }

    }
}
• UserRealm.java（用户认证与授权）
package com.wei.config;

import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.*;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.apache.shiro.subject.Subject;

//自定义UserRealm
public class UserRealm extends AuthorizingRealm {

    //授权
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        System.out.println("执行了=>授权doGetAuthorizationInfo");
        return null;
    }

    //认证
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
        System.out.println("执行了=>认证doGetAuthorizationInfo");
        //用户名，密码，数据库
        String name = "root";
        String password = "123456";
        UsernamePasswordToken userToken = (UsernamePasswordToken) authenticationToken;

        //用户认证
        if (!userToken.getUsername().equals(name)){
            return null;    //抛出异常  UnknownAccountException
        }
        //密码认证，shiro自动部署

        return new SimpleAuthenticationInfo("",password,"");
    }
}

• 依赖导入
<dependencies>
        <!--springboot-mybatis-->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.3.0</version>
        </dependency>
        <!--lombok-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.26</version>
        </dependency>
        <!--mysql-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <!--log4j-->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
        <!--druid-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.2.16</version>
        </dependency>
        <!--shiro-springboot-->
        <dependency>
            <groupId>org.apache.shiro</groupId>
            <artifactId>shiro-spring-boot-starter</artifactId>
            <version>1.11.0</version>
        </dependency>
        <!--thymeleaf-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <!--web-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--test-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>
• 配置文件application.properties
#整合mybatis
mybatis.type-aliases-package=com.wei.pojo
mybatis.mapper-locations=classpath:mapper/*.xml
• 数据库配置application.yml
spring:
  datasource:
    username: "root"
    password: "root"
    url: jdbc:mysql://localhost:3306/mybatis?useUnicode=true&characterEncoding=utf-8&serverTimezone=UTC
    driver-class-name: com.mysql.cj.jdbc.Driver
    #切换数据源
    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
• /pojo/User.java
package com.wei.pojo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@AllArgsConstructor
@NoArgsConstructor
public class User {
    private int id;
    private String name;
    private String pwd;
}
• /mapper/UserMapper.java
package com.wei.mapper;

import com.wei.pojo.User;
import org.apache.ibatis.annotations.Mapper;
import org.springframework.stereotype.Repository;

@Repository
@Mapper
public interface UserMapper {

    public User queryUserByName(String name);
}
• /resource/mapper/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.wei.mapper.UserMapper">

    <select id="queryUserByName" parameterType="String" resultType="User">
        select * from mybatis.user where name = #{name}
    </select>

</mapper>
• /service/UserService.java
package com.wei.service;

import com.wei.pojo.User;

public interface UserService {

    public User queryUserByName(String name);
}
• /service/UserServiceImpl.java
package com.wei;

import com.wei.service.UserServiceImpl;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;

@SpringBootTest
class Springboot06ShiroApplicationTests {

    @Autowired
    UserServiceImpl userService;

    @Test
    void contextLoads() {
        System.out.println(userService.queryUserByName("aaa"));
    }

}
• 测试
package com.wei;

import com.wei.service.UserServiceImpl;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;

@SpringBootTest
class Springboot06ShiroApplicationTests {

    @Autowired
    UserServiceImpl userService;

    @Test
    void contextLoads() {
        System.out.println(userService.queryUserByName("aaa"));
    }

}
• /config/UserRealm.java
package com.wei.config;

import com.wei.pojo.User;
import com.wei.service.UserService;
import org.apache.shiro.authc.*;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.springframework.beans.factory.annotation.Autowired;

//自定义UserRealm
public class UserRealm extends AuthorizingRealm {

    @Autowired
    UserService userService;

    //授权
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        System.out.println("执行了=>授权doGetAuthorizationInfo");
        return null;
    }

    //认证
    @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;       //UnknownAccountException
        }
        
        //密码认证，shiro自动部署
        //密码加密
        return new SimpleAuthenticationInfo("",user.getPwd(),"");
    }
}

• config/ShiroConfig.java
package com.wei.config;

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;

import java.util.LinkedHashMap;
import java.util.Map;

@Configuration
public class ShiroConfig {

    //ShiroFilterFactoryBean
    @Bean("shiroFilterFactoryBean")
    public ShiroFilterFactoryBean getShiroFilterFactoryBean(@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，才能访问
         * user:必须拥有rember me 功能才能使用
         * perms:必须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
         * */

        //登录拦截器
        Map<String, String> filterMap = new LinkedHashMap<>();
        //filterMap.put("/user/*","authc");
        filterMap.put("/user/add","authc");
        filterMap.put("/user/update","authc");
        bean.setFilterChainDefinitionMap(filterMap);

        //授权
        filterMap.put("/user/add","perms[user:add]");
        filterMap.put("/user/update","perms[user:update]");

        //设置登录请求
        bean.setLoginUrl("/toLogin");

        //设置未授权的请求
        bean.setUnauthorizedUrl("/noauth");
        return bean;
    }

    //DefaultWebSecurityManager
    @Bean("SecurityManager")
    public DefaultWebSecurityManager getDefaultWebSecurityManager(@Qualifier("userRealm") UserRealm userRealm){
        DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
        //关联UserRealm
        securityManager.setRealm(userRealm);
        return securityManager;
    }

    //Realm对象
    @Bean
    public UserRealm userRealm(){
        return new UserRealm();
    }
}
config/UserRealm.java
package com.wei.config;

import com.wei.pojo.User;
import com.wei.service.UserService;
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.*;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.apache.shiro.subject.Subject;
import org.springframework.beans.factory.annotation.Autowired;

//自定义UserRealm
public class UserRealm extends AuthorizingRealm {

    @Autowired
    UserService userService;

    //授权
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        System.out.println("执行了=>授权doGetAuthorizationInfo");

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

        //获取当前用户对象
        Subject subject = SecurityUtils.getSubject();
        //获取到了user对象
        User currentUser = (User) subject.getPrincipal();
        //设置当前用户权限
        info.addStringPermission(currentUser.getPerms());

        return info;
    }
 
    //认证
    @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;       //UnknownAccountException
        }

        //密码认证，shiro自动部署
        //密码加密
        return new SimpleAuthenticationInfo(user,user.getPwd(),"");
    }
}
• controller/MyController.java
package com.wei.controller;

import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.IncorrectCredentialsException;
import org.apache.shiro.authc.UnknownAccountException;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.subject.Subject;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@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.html";
    }

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

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

    @RequestMapping("/login")
    public String login(String username, String password, Model model) {
        //获取当前的用户
        Subject subject = SecurityUtils.getSubject();
        //封装用户的登录数据
        UsernamePasswordToken token = new UsernamePasswordToken(username, password);
        //执行登录方法，如果无异常则成功
        try {
            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";
        }
    }

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

• 依赖导入
<!--shiro-thymeleaf-->
        <dependency>
            <groupId>com.github.theborakompanioni</groupId>
            <artifactId>thymeleaf-extras-shiro</artifactId>
            <version>2.1.0</version>
        </dependency>
• config/ShiroConifg.java
//整合ShiroDialect：整合shiro和thymeleaf
    @Bean
    public ShiroDialect getShiroDialect(){
        return new ShiroDialect();
    }
• config/UserRealm.java
//获取当前的用户
        Subject currentSubject = SecurityUtils.getSubject();
        Session session = currentSubject.getSession();
        session.setAttribute("loginUser",user);
• index.html
<!DOCTYPE html>
<html lang="en"
      xmlns:th="http://www.thymeleaf.org"
      xmlns:shiro="http://www.pollix.at/thymeleaf/shiro"
>
<head>
    <meta charset="UTF-8">
    <title>wei_shuo</title>
</head>
<body>
<div>
    <span><h1>首页</h1></span>
    <div th:if="${session.loginUser==null}">
        <p><a th:href="@{/toLogin}">登录</a> </p>
    </div>
    <p th:text="${msg}"></p>
    <hr>
    <div shiro:hasPermission="'user:add'">
        <a th:href="@{/user/add}"><h1>add</h1></a>
    </div>
    <div shiro:hasPermission="'user:update'">
     <a th:href="@{/user/update}"><h1>update</h1></a>
    </div>
</div>
</body>
</html>