1.導包

        <!--shiro整合spring-->
        <!-- https://mvnrepository.com/artifact/org.apache.shiro/shiro-spring -->
        <dependency>
            <groupId>org.apache.shiro</groupId>
            <artifactId>shiro-spring</artifactId>
            <version>1.7.0</
 
version>
        </dependency>

2.搭建基本環境

知識點回顧：

　　如何宣告自定義類是配置類？　@Configuration

　　如何將自定義配置類的方法交給spring託管？ @Bean

　　如何在springioc容器中指定@Bean？@Qualifier（裝配指定的@Bean）

2.1建立shiro配置類

　　2.1.1shiro配置類

@Configuration
public class ShiroConfig {

    //ShiroFilterFactoryBean工廠：3
    @Bean
    public ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier("getDefaultWebSecurityManager") DefaultWebSecurityManager defaultWebSecurityManager){
        ShiroFilterFactoryBean bean 
 
= new ShiroFilterFactoryBean();
        //設定安全管理器
        bean.setSecurityManager(defaultWebSecurityManager);
        //新增shiro內建過濾器
        /*
        * anon:無需認證就能訪問
        * authc:必須認證才能訪問
        * user：必須擁有記住我功能才能使用
        * perms:擁有對某個資源的許可權才能訪問
        * role：擁有某個角色許可權才能訪問
        * */

        Map
 
<String, String> filterMap=new LinkedHashMap<>();

        //這裡面的路徑是請求路徑
        filterMap.put("/user/add","authc");
        filterMap.put("/user/update","authc");

        bean.setFilterChainDefinitionMap(filterMap);

        //設定登入請求
        bean.setLoginUrl("/toLogin");

        return bean;
    }

    //DefaultWebSecurityManager：2
    //@Qualifier作用，繫結指定的spring容器裡的bean
    @Bean
    public DefaultWebSecurityManager getDefaultWebSecurityManager(@Qualifier("userRealm")UserRealm userRealm){
        DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
        //關聯userRealm
        securityManager.setRealm(userRealm);
        return securityManager;
    }


    //建立 realm 物件，需要自定義類 ：1
    @Bean(name = "userRealm")//被spring容器接管
    public UserRealm userRealm(){
        return new UserRealm();
    }

}

　　2.1.2自定義UserRealm

package com.king.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;

//自定義的 UserRealm
public class UserRealm extends AuthorizingRealm {

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


    //認證
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
        System.out.println("執行了=>認證AuthenticationInfo");
        return null;
    }
}

　　2.2測試，Controlelr+View

package com.king.controller;

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

@Controller
public class MyController {
    //首頁
    @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";
    }

}

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