spring boot 2 + shiro 实现简单的身份验证例子

Shiro是一个功能强大且易于使用的Java安全框架,官网:https://shiro.apache.org/。java

主要功能有身份验证、受权、加密和会话管理。
其它特性有Web支持、缓存、测试支持、容许一个用户用另外一个用户的身份进行访问、记住我。web

Shiro有三个核心组件:Subject,SecurityManager和 Realm。spring

Subject:即当前操做“用户”,“用户”并不单单指人,也能够是第三方进程、后台账户或其余相似事物。
SecurityManager:安全管理器,Shiro框架的核心,经过SecurityManager来管理全部Subject,并经过它来提供安全管理的各类服务。
Realm:域,充当了Shiro与应用安全数据间的“桥梁”或者“链接器”。也就是说,当对用户执行认证(登陆)和受权(访问控制)验证时,Shiro会从应用配置的Realm中查找用户及其权限信息。当配置Shiro时,必须至少指定一个Realm,用于认证和(或)受权。数据库

Spring Boot 中整合Shiro,根据引入的依赖包shiro-springshiro-spring-boot-web-starter(当前版本都是1.4.2)不一样有两种不一样方法。apache

方法一:引入依赖包shiro-spring缓存

一、IDEA中建立一个新的SpringBoot项目,pom.xml引用的依赖包以下:安全

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

        <dependency>
            <groupId>org.apache.shiro</groupId>
            <artifactId>shiro-spring</artifactId>
            <version>1.4.2</version>
        </dependency>
        

二、建立Realm和配置shiroapp

(1)建立Realm框架

package com.example.demo.config;

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

public class MyRealm extends AuthorizingRealm {

    /**权限信息,暂不实现*/
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        return null;
    }

    /**身份认证:验证用户输入的帐号和密码是否正确。*/
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
        //获取用户输入的帐号
        String userName = (String) token.getPrincipal();
        //验证用户admin和密码123456是否正确
        if (!"admin".equals(userName)) {
            throw new UnknownAccountException("帐户不存在!");
        }
        SimpleAuthenticationInfo authenticationInfo = new SimpleAuthenticationInfo(userName, "123456", getName());
        return authenticationInfo;
        //实际项目中,上面帐号从数据库中获取用户对象,再判断是否存在
        /*User user = userService.findByUserName(userName);
        if (user == null) {
            throw new UnknownAccountException("帐户不存在!");
        }
        SimpleAuthenticationInfo authenticationInfo = new SimpleAuthenticationInfo(user,user.getPassword(), getName());
        return authenticationInfo;
        */
    }
}

(2)配置Shirojsp

package com.example.demo.config;

import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

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

@Configuration
public class ShiroConfig {
    @Bean
    MyRealm myRealm() {
        return new MyRealm();
    }

    @Bean
    DefaultWebSecurityManager securityManager() {
        DefaultWebSecurityManager manager = new DefaultWebSecurityManager();
        manager.setRealm(myRealm());
        return manager;
    }

    @Bean
    ShiroFilterFactoryBean shiroFilterFactoryBean() {
        ShiroFilterFactoryBean bean = new ShiroFilterFactoryBean();
        bean.setSecurityManager(securityManager());
        //若是不设置默认会自动寻找Web工程根目录下的"/login.jsp"页面
        bean.setLoginUrl("/login");
        //登陆成功后要跳转的连接
        bean.setSuccessUrl("/index");
        //未受权界面
        bean.setUnauthorizedUrl("/403");
        //配置不会被拦截的连接
        Map<String, String> map = new LinkedHashMap<>();
        map.put("/doLogin", "anon");
        map.put("/**", "authc");
        bean.setFilterChainDefinitionMap(map);
        return bean;
    }
}

三、控制器测试方法

package com.example.demo.controller;

import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.UnknownAccountException;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.subject.Subject;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class LoginController {

    @GetMapping("/login")
    public String  login() {
        return "登陆页面...";
    }

    @PostMapping("/doLogin")
    public String doLogin(String userName, String password) {
        Subject subject = SecurityUtils.getSubject();
        try {
            subject.login(new UsernamePasswordToken(userName, password));
            return "登陆成功!";
        } catch (UnknownAccountException e) {
            return e.getMessage();
        } catch (AuthenticationException e) {
            return "登录失败,密码错误!";
        }
    }

    //若是没有先登录,访问会跳到/login
    @GetMapping("/index")
    public String index() {
        return "index";
    }

    @GetMapping("/403")
    public String unauthorizedRole(){
        return "没有权限";
    }
}

方法二:引入依赖包shiro-spring-boot-web-starter

一、pom.xml中删除shiro-spring,引入shiro-spring-boot-web-starter

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

        <dependency>
            <groupId>org.apache.shiro</groupId>
            <artifactId>shiro-spring-boot-web-starter</artifactId>
            <version>1.4.2</version>
        </dependency>

二、建立Realm和配置shiro

(1)建立Realm,代码和方法一的同样。
(2)配置Shiro

package com.example.demo.config;

import org.apache.shiro.spring.web.config.DefaultShiroFilterChainDefinition;
import org.apache.shiro.spring.web.config.ShiroFilterChainDefinition;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class ShiroConfig {
    @Bean
    MyRealm myRealm() {
        return new MyRealm();
    }

    @Bean
    DefaultWebSecurityManager securityManager() {
        DefaultWebSecurityManager manager = new DefaultWebSecurityManager();
        manager.setRealm(myRealm());
        return manager;
    }

    @Bean
    ShiroFilterChainDefinition shiroFilterChainDefinition() {
        DefaultShiroFilterChainDefinition definition = new DefaultShiroFilterChainDefinition();
        definition.addPathDefinition("/doLogin", "anon");
        definition.addPathDefinition("/**", "authc");
        return definition;
    }
}

(3)application.yml配置

shiro:
  unauthorizedUrl: /403
  successUrl: /index
  loginUrl: /login
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