Shiro

1、创建一个SpringBoot项目

2、导入thymeleaf依赖

 <!-thymeleaf模板-->
        <!-- https://mvnrepository.com/artifact/org.apache.shiro/shiro-core -->
        <dependency>
            <groupId>org.apache.shiro</groupId>
            <artifactId>shiro-spring</artifactId>
            <version>1.4.1</version>
        </dependency>

        <dependency>
            <groupId>org.thymeleaf</groupId>
            <artifactId>thymeleaf-spring5</artifactId>
        </dependency>
        <dependency>
            <groupId>org.thymeleaf.extras</groupId>
            <artifactId>thymeleaf-extras-java8time</artifactId>
        </dependency>

3、创建一个首页

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

<h1 align="center" color="red">首页</h1>
<p th:text="${msg}"></p>
<hr>
<a th:href="@{user/add}">登陆</a> | <a th:href="@{user/update}">注册</a>
</body>
</html>

4、创建一个controller包

package com.example.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";
    }
    @RequestMapping("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();
        //封装用户登陆数据
        UsernamePasswordToken token=new UsernamePasswordToken(username,password);
        try {
            subject.login(token);//执行登陆方法，如果没有异常就说明可以了
            return "index";
        }catch (UnknownAccountException e){
            model.addAttribute("msg","用户名错误");
            return "login";
        }catch (IncorrectCredentialsException e){
            //密码不存在
            model.addAttribute("msg","密码不存在");
            return "login";
        }

    }
}

5、创建User包放置两个网页

add.html

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

update.html

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

6、创建config包

创建ShiroConfig类

package com.example.config;

import org.apache.catalina.User;
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
    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：无需认证就可以访问
        * authc：必须认证了才能访问
        * user：必须拥有 记住我 功能才能使用
        * 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");
        bean.setFilterChainDefinitionMap(filterMap);
        bean.setLoginUrl("/toLogin");
        return bean;
    }
    //DefaultWebSecurityManager
    @Bean(name = "securityManager")
    public DefaultWebSecurityManager getDefaulWebSecurityManager(@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
    @Bean
    public UserRealm userRealm(){
        return new UserRealm();
    }
}

创建UserRealm类

package com.example.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;

//自定义一个Realm    extends AuthorizingRealm
public class UserRealm extends AuthorizingRealm {
    //授权
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        System.out.println("授权了=>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  数据中取
        String name="root";
        String password="123456";
        UsernamePasswordToken userToken = (UsernamePasswordToken) token;
        if(userToken.getUsername().equals(name)){
            return null;//抛出异常UnknownAccountException
        }
        //密码认证shiro做
        return new SimpleAuthenticationInfo("",password,"");
    }
}

 

posted @ 2021-03-02 13:33  PoemLiquor  阅读(80)  评论(1)    收藏  举报