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Spring Boot 创建 Web 项目，pom.xml 导入 Thymeleaf 依赖

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

resources 目录下 templates 包新建 index.html

xmlns:th="http://www.thymeleaf.org"

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>首页</h1>
<p th:text="${msg}"></p>
</body>
</html>

controller 包下先创建 MyController.java 测试是否能执行成功

package com.demo.shirospringboot.controller;

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";
    }
}

地址栏输入 localhost:8080/index 回车

执行成功！

Shiro 核心对象：

1.Subject 用户

2.SecurityManager 管理所有用户

3.Realm 连接数据

pom.xml 文件引入 shiro-spring 的 jar 包

        <dependency>
            <groupId>org.apache.shiro</groupId>
            <artifactId>shiro-spring</artifactId>
            <version>2.0.1</version>
        </dependency>

config 包下创建自定义 UserRealm 类

继承 AuthorizingRealm 方法，重写授权（doGetAuthorizationInfo）和认证（doGetAuthenticationInfo）方法

package com.demo.shirospringboot.config;

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UserRealm
public class UserRealm extends AuthorizingRealm {

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

    //认证
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
        System.out.println("认证");
        return null;
    }
}

config 包下创建 ShiroConfig.java

package com.demo.shirospringboot.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.stereotype.Controller;

@Controller
public class ShiroConfig {

    //第三步：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;
    }

    //第二步：DefaultWebSecurityManager
    @Bean(name="securityManager")
    public DefaultWebSecurityManager getDefaultWebSecurityManager(@Qualifier("userRealm") UserRealm userRealm) {
        DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
        //关联UserRealm
        securityManager.setRealm(userRealm);
        return securityManager;
    }

    //第一步：创建realm对象，需自定义类
    @Bean
    public UserRealm userRealm(){
        return new UserRealm();
    }
}

templates 目录下再创建 user 目录，随便写两个 HTML 用来测试

MyController.java 添加 add 和 update 方法，设置跳转地址和返回页面

package com.demo.shirospringboot.controller;

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";
    }
}

同理，index.html 也添加两个 a 链接标签

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

启动，查看效果

在运行时发现一个 bug

threw exception with message: javax/servlet/Filter

经过搜索，找到解决方法

在 pom.xml 文件导入 javax.servlet-api 的 jar 包即可

        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>4.0.1</version>
        </dependency>