SpringSecurity整合SpringBoot——集中式版与分布式版

1.集中式版
- 1.1.整合认证第一版
- - 1.1.1.搭建SpringBoot环境
  - 1.1.2.加入Spring Security
- 1.2.整合认证第二版【加入jsp使用自定义认证页面】
- - 1.2.1.加入自定义的jsp页面
  - 1.2.2.提供SpringSecurity配置类
  - 1.2.3.修改相应的控制器方法并配置视图解析器
  - 1.2.4.使用tomcat插件启动项目
- 1.3.整合认证第三版【数据库认证】
- - 1.3.1.加入通用mapper
  - - （1）导入数据库操作相关jar包
    - （2）在application.yml配置文件中添加数据库操作相关配置
    - （3）在启动类上添加扫描dao接口包注解
  - 1.3.2.使用数据库实现认证
  - - （1）创建角色和用户的pojo对象（直接使用SpringSecurity的角色规范）
    - （2）提供角色和用户的mapper接口
    - （3）提供认证service接口以及实现类
    - （4）修改配置类WebSecurityConfig
  - 1.3.3.使用数据库中的用户信息进行测试
- 1.4.整合实现授权功能
- - 1.4.1.在配置类上添加开启方法级的授权注解
  - 1.4.2.在产品控制器类上添加注解
  - 1.4.3.进行测试
2.分布式版
- 2.1.分布式认证
- - 2.1.1.分布式认证概念说明
  - 2.1.2.分布式认证流程图
  - 2.1.3.JWT介绍
- 2.2.创建父工程与common工具模块
- 2.3.相关准备工作
- 2.4.认证模块搭建
- 2.5.资源服务器搭建

本文章的笔记整理来自黑马视频https://www.bilibili.com/video/BV1vt4y1i7zA?p=33，相关资料可以在该视频的评论区进行获取

注：如果对Spring Security不是很了解的读者，可以先去阅读Spring Security——入门介绍这篇文章。

1.集中式版 1.1.整合认证第一版 1.1.1.搭建SpringBoot环境

（1）在IDEA中创建一个名为spring_security_family空项目在这里插入图片描述（2）创建一个新的Module （3）导入SpringBoot相关的jar包



    4.0.0

    com.itheima
    springboot_security_jsp
    1.0-SNAPSHOT
    war

    
        org.springframework.boot
        spring-boot-starter-parent
        2.1.3.RELEASE
        
    

    
        
            org.springframework.boot
            spring-boot-starter-web

（4）创建SpringBoot启动类以及SpringBoot全局配置文件application.yml

package com.itheima;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

//SpringBoot启动类
@SpringBootApplication
public class SpringSecurityApplication {
    
    public static void main(String[] args) {
        SpringApplication.run(SpringSecurityApplication.class);
    }
}

# application.yml
server:
  port: 8080

（5）测试

package com.itheima.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
@RequestMapping("/product")
public class ProductController {
    
    @RequestMapping
    @ResponseBody
    public String findAll(){
        return "success";
    }
}

先在SpringBoot启动类中启动SpringBoot，然后在浏览器地址栏中输入http://localhost:8080/product，如果得到下面的结果，则说明测试成功。在这里插入图片描述

1.1.2.加入Spring Security

（1）在pom.xml中加入Spring Security依赖


    org.springframework.boot
    spring-boot-starter-security

（2）然后进行测试，当在浏览器地址栏中输入http://localhost:8080/product时，出现如下界面（由Spring Security提供）：在这里插入图片描述这说明Spring Security已经加入到项目中了，此时可以使用默认的用户名user，以及在项目控制台动态生成的密码进行登录，然后就可以正常访问了。

1.2.整合认证第二版【加入jsp使用自定义认证页面】 1.2.1.加入自定义的jsp页面

（1）要想在SpringBoot中使用jsp页面，需要导入以下两个jar包，并且SpringBoot启动类不再生效。


    org.springframework.boot
    spring-boot-starter-tomcat


    org.apache.tomcat.embed
    tomcat-embed-jasper

（2）在main目录下创建webapp目录，并导入需要的静态资源（相关资源在黑马视频的评论区进行获取）在这里插入图片描述（3）修改login.jsp中认证的url地址以及header.jsp中退出登录的url地址

1.2.2.提供SpringSecurity配置类

package com.itheima.config;

import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;

@Configuration
@EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
    
    //SpringSecurity配置信息
    //指定认证对象的来源
    public void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.inMemoryAuthentication()
                .withUser("user")
                .password("{noop}123")
                .roles("USER");
    }
    
    public void configure(HttpSecurity http) throws Exception{
        http.authorizeRequests()
                .antMatchers("/login.jsp", "failer.jsp", "/css/**", "/img/**", "/plugins/**").permitAll()
                .antMatchers("/**").hasAnyRole("USER","ADMIN")
                .anyRequest().authenticated()
                .and()
                .formLogin()
                .loginPage("/login.jsp")
                .loginProcessingUrl("/login")
                .successForwardUrl("/index.jsp")
                .failureForwardUrl("/failer.jsp")
                .permitAll()
                .and()
                .logout()
                .logoutSuccessUrl("/logout")
                .invalidateHttpSession(true)
                .permitAll()
                .logoutSuccessUrl("/login.jsp")
                .and()
                .csrf()
                .disable();   //为了方便测试，此处先关闭csrf
    }
}

1.2.3.修改相应的控制器方法并配置视图解析器

（1）修改相应的控制器方法

package com.itheima.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
@RequestMapping("/product")
public class ProductController {
    
    @RequestMapping("/findAll")
    public String findAll(){
        //跳转页面的前后缀已经在application.yml中配置
        return "product-list";
    }
}

（2）在application.yml中配置视图解析器

spring:
  mvc:
    view:
      prefix: /pages/
      suffix: .jsp

1.2.4.使用tomcat插件启动项目

在这里插入图片描述

1.3.整合认证第三版【数据库认证】 1.3.1.加入通用mapper （1）导入数据库操作相关jar包


    mysql
    mysql-connector-java
    5.1.47


    tk.mybatis
    mapper-spring-boot-starter
    2.1.5

（2）在application.yml配置文件中添加数据库操作相关配置

在这里插入图片描述

（3）在启动类上添加扫描dao接口包注解

在这里插入图片描述

1.3.2.使用数据库实现认证（1）创建角色和用户的pojo对象（直接使用SpringSecurity的角色规范）

package com.itheima.domain;

import com.fasterxml.jackson.annotation.JsonIgnore;
import org.springframework.security.core.GrantedAuthority;

public class SysRole implements GrantedAuthority {
    
    private Integer id;
    private String roleName;
    private String roleDesc;
    
    public Integer getId() {
        return id;
    }
    
    public void setId(Integer id) {
        this.id = id;
    }
    
    public String getRoleName() {
        return roleName;
    }
    
    public void setRoleName(String roleName) {
        this.roleName = roleName;
    }
    
    public String getRoleDesc() {
        return roleDesc;
    }
    
    public void setRoleDesc(String roleDesc) {
        this.roleDesc = roleDesc;
    }
    
    @JsonIgnore
    @Override
    public String getAuthority() {
        return roleName;
    }
}

package com.itheima.domain;

import com.fasterxml.jackson.annotation.JsonIgnore;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;

import java.util.Collection;
import java.util.List;

public class SysUser implements UserDetails {
    
    private Integer id;
    private String username;
    private String password;
    private Integer status;
    private List roles;
    
    public List getRoles() {
        return roles;
    }
    
    public void setRoles(List roles) {
        this.roles = roles;
    }
    
    public Integer getId() {
        return id;
    }
    
    public void setId(Integer id) {
        this.id = id;
    }
    
    public void setUsername(String username) {
        this.username = username;
    }
    
    public void setPassword(String password) {
        this.password = password;
    }
    
    public Integer getStatus() {
        return status;
    }
    
    public void setStatus(Integer status) {
        this.status = status;
    }
    
    //@JsonIgnore:不参与json字符串的转换
    @JsonIgnore
    @Override
    public Collection getAuthorities() {
        return roles;
    }
    
    @Override
    public String getPassword() {
        return password;
    }
    
    @Override
    public String getUsername() {
        return username;
    }
    
    @JsonIgnore
    @Override
    public boolean isAccountNonExpired() {
        return true;
    }
    
    @JsonIgnore
    @Override
    public boolean isAccountNonLocked() {
        return true;
    }
    
    @JsonIgnore
    @Override
    public boolean isCredentialsNonExpired() {
        return true;
    }
    
    @JsonIgnore
    @Override
    public boolean isEnabled() {
        return true;
    }
}

（2）提供角色和用户的mapper接口

package com.itheima.mapper;

import com.itheima.domain.SysRole;
import org.apache.ibatis.annotations.Select;
import tk.mybatis.mapper.common.Mapper;

import java.util.List;

public interface RoleMapper extends Mapper {
    
    //根据用户id查询角色
    @Select("SELECT r.id, r.role_name roleName, r.role_desc roleDesc " +
            "FROM sys_role r, sys_user_role ur " +
            "WHERE r.id=ur.rid AND ur.uid=#{uid}")
    List findByUid(Integer uid);
}

package com.itheima.mapper;

import com.itheima.domain.SysUser;
import org.apache.ibatis.annotations.Many;
import org.apache.ibatis.annotations.Result;
import org.apache.ibatis.annotations.Results;
import org.apache.ibatis.annotations.Select;
import tk.mybatis.mapper.common.Mapper;

import java.util.List;

public interface UserMapper extends Mapper{
    
    //根据用户名查询用户（包括用户所拥有的角色）
    @Select("select * from sys_user where username = #{username}")
    @Results({
            @Result(id = true, property = "id", column = "id"),
            @Result(property = "roles", column = "id", javaType = List.class,
                    many = @Many(select = "com.itheima.mapper.RoleMapper.findByUid"))
    })
    SysUser findByName(String username);    
}

（3）提供认证service接口以及实现类

package com.itheima.service;

import org.springframework.security.core.userdetails.UserDetailsService;

public interface UserService extends UserDetailsService {
}

package com.itheima.service.impl;

import com.itheima.mapper.UserMapper;
import com.itheima.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

@Service
@Transactional
public class UserServiceImpl implements UserService {
    
    @Autowired
    private UserMapper userMapper;
    
    @Override
    public UserDetails loadUserByUsername(String s) throws UsernameNotFoundException{
        return userMapper.findByName(s);
    }
}

（4）修改配置类WebSecurityConfig

package com.itheima.config;

import com.itheima.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;

@Configuration
@EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
    
    @Autowired
    private UserService userService;
    
    //将加密对象注册到Spring容器中
    @Bean
    public BCryptPasswordEncoder passwordEncoder(){
        return new BCryptPasswordEncoder();
    }
    
    //SpringSecurity配置信息
    //指定认证对象的来源
    public void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userService).passwordEncoder(passwordEncoder());
    }
    
    public void configure(HttpSecurity http) throws Exception{
        http.authorizeRequests()
                .antMatchers("/login.jsp", "failer.jsp", "/css/**", "/img/**", "/plugins/**").permitAll()
                .antMatchers("/**").hasAnyRole("USER","ADMIN")
                .anyRequest().authenticated()
                .and()
                .formLogin()
                .loginPage("/login.jsp")
                .loginProcessingUrl("/login")
                .successForwardUrl("/index.jsp")
                .failureForwardUrl("/failer.jsp")
                .permitAll()
                .and()
                .logout()
                .logoutSuccessUrl("/logout")
                .invalidateHttpSession(true)
                .permitAll()
                .logoutSuccessUrl("/login.jsp")
                .and()
                .csrf()
                .disable();   //为了方便测试，此处先关闭csrf
    }
}

1.3.3.使用数据库中的用户信息进行测试

在这里插入图片描述

1.4.整合实现授权功能 1.4.1.在配置类上添加开启方法级的授权注解

在这里插入图片描述

1.4.2.在产品控制器类上添加注解

在这里插入图片描述

1.4.3.进行测试

（1）此处使用不具有ROLE_PRODUCT角色的用户xiaoma进行测试在这里插入图片描述（2）自定义异常页面编写异常处理器拦截403异常

package com.itheima.advice;

import org.springframework.security.access.AccessDeniedException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;

@ControllerAdvice
public class HandlerControllerException {
    
    @ExceptionHandler(RuntimeException.class)
    public String handException(RuntimeException e){
        if(e instanceof AccessDeniedException){
            return "redirect:/403.jsp";
        }
        return "redirect:/500.jsp";
    }
}

再次测试时便出现以下自定义的异常页面：在这里插入图片描述

2.分布式版 2.1.分布式认证 2.1.1.分布式认证概念说明

分布式认证，即我们常说的单点登录，简称 SSO，指的是在多应用系统的项目中，用户只需要登录一次，就可以访问所有互相信任的应用系统。

2.1.2.分布式认证流程图

首先，需要明确一点的是，在分布式项目中，每台服务器都有各自独立的session，而这些session之间是无法直接共享资源的，所以session通常不能被作为单点登录的技术方案。最合理的单点登录方案流程如下图所示：

在这里插入图片描述总结一下，单点登录的实现分两大环节： ① 用户认证：这一环节主要是用户向认证服务器发起认证请求，认证服务器给用户返回一个成功的令牌token，主要在认证服务器中完成，即图中的A系统，注意A系统只能有一个。 ② 身份校验：这一环节是用户携带token去访问其他服务器时，在其他服务器中要对token的真伪进行检验，主要在资源服务器中完成，即图中的B系统，这里B系统可以有很多个。

2.1.3.JWT介绍

（1）概念说明从分布式认证流程中，我们不难发现，这中间起最关键作用的就是token，token的安全与否，直接关系到系统的健壮性，这里我们选择使用JWT来实现 token 的生成和校验。JWT，全称 JSON Web Token，官网地址为https://jwt.io，是一款出色的分布式身份校验方案。可以生成 token，也可以解析检验 token。JWT 生成的 token 由三部分组成：

头部主要设置一些规范信息，签名部分的编码格式就在头部中声明。载荷token中存放有效信息的部分，比如用户名，用户角色，过期时间等，但是不要放密码，会泄露！签名将头部与载荷分别采用base64编码后，用“.”相连，再加入盐，最后使用头部声明的编码类型进行编码，就得到了签名。

（2）JWT生成 token 的安全性分析 ① 从JWT生成的 token 组成上来看，要想避免token被伪造，主要就得看签名部分了，而签名部分又有三部分组成，其中头部和载荷的base64编码，几乎是透明的，毫无安全性可言，那么最终守护token安全的重担就落在了加入的盐上面了！ ② 试想：如果生成token所用的盐与解析token时加入的盐是一样的。岂不是类似于中国人民银行把人民币防伪技术公开了？大家可以用这个盐来解析token，就能用来伪造token。 ③ 这时，我们就需要对盐采用非对称加密的方式进行加密，以达到生成token与校验token方所用的盐不一致的安全效果！

（3）非对称加密 RSA 介绍 ① 基本原理：同时生成两把密钥：私钥和公钥，私钥隐秘保存，公钥可以下发给信任客户端

私钥加密持有私钥或公钥才可以解密公钥加密持有私钥才可解密

② 优点：安全，难以破解 ③ 缺点：算法比较耗时，为了安全，可以接受 ④ 历史：三位数学家Rivest、Shamir 和 Adleman 设计了一种算法，可以实现非对称加密。这种算法用他们三个人的名字缩写：RSA。

2.2.创建父工程与common工具模块

（1）创建父工程（不存放业务代码）在这里插入图片描述（2）创建common工具模块

2.3.相关准备工作

以下准备工作都是针对common工具模块而言（1）在pom.xml中导入JWT以及其它相关的jar包


    
        io.jsonwebtoken
        jjwt-api
        0.10.7
    
    
        io.jsonwebtoken
        jjwt-impl
        0.10.7
        runtime
    
    
        io.jsonwebtoken
        jjwt-jackson
        0.10.7
        runtime
    
    
    
        com.fasterxml.jackson.core
        jackson-databind
        2.9.9
    
    
    
        org.springframework.boot
        spring-boot-starter-logging
    
    
        joda-time
        joda-time
    
    
        org.projectlombok
        lombok
    
    
        org.springframework.boot
        spring-boot-starter-test

（2）准备相关的实体类以及工具类在这里插入图片描述

package com.itheima.domain;

import lombok.Data;

import java.util.Date;

/**
 * 为了方便后期获取token中的用户信息，将token中载荷部分单独封装成一个对象
 */
@Data
public class Payload {
    private String id;
    private T userInfo;
    private Date expiration;
}

package com.itheima.utils;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;
import java.util.List;
import java.util.Map;

public class JsonUtils {

    public static final ObjectMapper mapper = new ObjectMapper();

    private static final Logger logger = LoggerFactory.getLogger(JsonUtils.class);

    public static String toString(Object obj) {
        if (obj == null) {
            return null;
        }
        if (obj.getClass() == String.class) {
            return (String) obj;
        }
        try {
            return mapper.writeValueAsString(obj);
        } catch (JsonProcessingException e) {
            logger.error("json序列化出错：" + obj, e);
            return null;
        }
    }

    public static  T toBean(String json, Class tClass) {
        try {
            return mapper.readValue(json, tClass);
        } catch (IOException e) {
            logger.error("json解析出错：" + json, e);
            return null;
        }
    }

    public static  List toList(String json, Class eClass) {
        try {
            return mapper.readValue(json, mapper.getTypeFactory().constructCollectionType(List.class, eClass));
        } catch (IOException e) {
            logger.error("json解析出错：" + json, e);
            return null;
        }
    }

    public static  Map toMap(String json, Class kClass, Class vClass) {
        try {
            return mapper.readValue(json, mapper.getTypeFactory().constructMapType(Map.class, kClass, vClass));
        } catch (IOException e) {
            logger.error("json解析出错：" + json, e);
            return null;
        }
    }

    public static  T nativeRead(String json, TypeReference type) {
        try {
            return mapper.readValue(json, type);
        } catch (IOException e) {
            logger.error("json解析出错：" + json, e);
            return null;
        }
    }
}

package com.itheima.utils;

import com.itheima.domain.Payload;
import io.jsonwebtoken.Claims;
import io.jsonwebtoken.Jws;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
import org.joda.time.DateTime;

import java.security.PrivateKey;
import java.security.PublicKey;
import java.util.Base64;
import java.util.UUID;

/**
 * 生成token以及校验token相关方法
 */
public class JwtUtils {

    private static final String JWT_PAYLOAD_USER_KEY = "user";

    /**
     * 私钥加密token
     *
     * @param userInfo   载荷中的数据
     * @param privateKey 私钥
     * @param expire     过期时间，单位分钟
     * @return JWT
     */
    public static String generateTokenExpireInMinutes(Object userInfo, PrivateKey privateKey, int expire) {
        return Jwts.builder()
                .claim(JWT_PAYLOAD_USER_KEY, JsonUtils.toString(userInfo))
                .setId(createJTI())
                .setExpiration(DateTime.now().plusMinutes(expire).toDate())
                .signWith(privateKey, SignatureAlgorithm.RS256)
                .compact();
    }

    /**
     * 私钥加密token
     *
     * @param userInfo   载荷中的数据
     * @param privateKey 私钥
     * @param expire     过期时间，单位秒
     * @return JWT
     */
    public static String generateTokenExpireInSeconds(Object userInfo, PrivateKey privateKey, int expire) {
        return Jwts.builder()
                .claim(JWT_PAYLOAD_USER_KEY, JsonUtils.toString(userInfo))
                .setId(createJTI())
                .setExpiration(DateTime.now().plusSeconds(expire).toDate())
                .signWith(privateKey, SignatureAlgorithm.RS256)
                .compact();
    }

    /**
     * 公钥解析token
     *
     * @param token     用户请求中的token
     * @param publicKey 公钥
     * @return Jws
     */
    private static Jws parserToken(String token, PublicKey publicKey) {
        return Jwts.parser().setSigningKey(publicKey).parseClaimsJws(token);
    }

    private static String createJTI() {
        return new String(Base64.getEncoder().encode(UUID.randomUUID().toString().getBytes()));
    }

    /**
     * 获取token中的用户信息
     *
     * @param token     用户请求中的令牌
     * @param publicKey 公钥
     * @return 用户信息
     */
    public static  Payload getInfoFromToken(String token, PublicKey publicKey, Class userType) {
        Jws claimsJws = parserToken(token, publicKey);
        Claims body = claimsJws.getBody();
        Payload claims = new Payload();
        claims.setId(body.getId());
        claims.setUserInfo(JsonUtils.toBean(body.get(JWT_PAYLOAD_USER_KEY).toString(), userType));
        claims.setExpiration(body.getExpiration());
        return claims;
    }

    /**
     * 获取token中的载荷信息
     *
     * @param token     用户请求中的令牌
     * @param publicKey 公钥
     * @return 用户信息
     */
    public static  Payload getInfoFromToken(String token, PublicKey publicKey) {
        Jws claimsJws = parserToken(token, publicKey);
        Claims body = claimsJws.getBody();
        Payload claims = new Payload();
        claims.setId(body.getId());
        claims.setExpiration(body.getExpiration());
        return claims;
    }
}

package com.itheima.utils;

import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.security.*;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import java.util.Base64;

public class RsaUtils {

    private static final int DEFAULT_KEY_SIZE = 2048;
    /**
     * 从文件中读取公钥
     *
     * @param filename 公钥保存路径，相对于classpath
     * @return 公钥对象
     * @throws Exception
     */
    public static PublicKey getPublicKey(String filename) throws Exception {
        byte[] bytes = readFile(filename);
        return getPublicKey(bytes);
    }

    /**
     * 从文件中读取密钥
     *
     * @param filename 私钥保存路径，相对于classpath
     * @return 私钥对象
     * @throws Exception
     */
    public static PrivateKey getPrivateKey(String filename) throws Exception {
        byte[] bytes = readFile(filename);
        return getPrivateKey(bytes);
    }

    /**
     * 获取公钥
     *
     * @param bytes 公钥的字节形式
     * @return
     * @throws Exception
     */
    private static PublicKey getPublicKey(byte[] bytes) throws Exception {
        bytes = Base64.getDecoder().decode(bytes);
        X509EncodedKeySpec spec = new X509EncodedKeySpec(bytes);
        KeyFactory factory = KeyFactory.getInstance("RSA");
        return factory.generatePublic(spec);
    }

    /**
     * 获取密钥
     *
     * @param bytes 私钥的字节形式
     * @return
     * @throws Exception
     */
    private static PrivateKey getPrivateKey(byte[] bytes) throws NoSuchAlgorithmException, InvalidKeySpecException {
        bytes = Base64.getDecoder().decode(bytes);
        PKCS8EncodedKeySpec spec = new PKCS8EncodedKeySpec(bytes);
        KeyFactory factory = KeyFactory.getInstance("RSA");
        return factory.generatePrivate(spec);
    }

    /**
     * 根据密文，生存rsa公钥和私钥,并写入指定文件
     *
     * @param publicKeyFilename  公钥文件路径
     * @param privateKeyFilename 私钥文件路径
     * @param secret             生成密钥的密文
     */
    public static void generateKey(String publicKeyFilename, String privateKeyFilename, String secret, int keySize) throws Exception {
        KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
        SecureRandom secureRandom = new SecureRandom(secret.getBytes());
        keyPairGenerator.initialize(Math.max(keySize, DEFAULT_KEY_SIZE), secureRandom);
        KeyPair keyPair = keyPairGenerator.genKeyPair();
        // 获取公钥并写出
        byte[] publicKeyBytes = keyPair.getPublic().getEncoded();
        publicKeyBytes = Base64.getEncoder().encode(publicKeyBytes);
        writeFile(publicKeyFilename, publicKeyBytes);
        // 获取私钥并写出
        byte[] privateKeyBytes = keyPair.getPrivate().getEncoded();
        privateKeyBytes = Base64.getEncoder().encode(privateKeyBytes);
        writeFile(privateKeyFilename, privateKeyBytes);
    }

    private static byte[] readFile(String fileName) throws Exception {
        return Files.readAllBytes(new File(fileName).toPath());
    }

    private static void writeFile(String destPath, byte[] bytes) throws IOException {
        File dest = new File(destPath);
        if (!dest.exists()) {
            dest.createNewFile();
        }
        Files.write(dest.toPath(), bytes);
    }
}

在测试方法中生成公钥和私钥

package com.itheima.utils;

import org.junit.Test;

public class RsaUtilsTest {
    
    private String privateFilePath = "E:\\auth_key\\id_key_rsa";
    private String publicFilePath = "E:\\auth_key\\id_key_rsa.pub";
    
    @Test
    public void generateKey() throws Exception {
        RsaUtils.generateKey(publicFilePath, privateFilePath, "itheima", 2048);
    }
    
    @Test
    public void getPublicKey() throws Exception {
        System.out.println(RsaUtils.getPublicKey(publicFilePath));
    }
    
    @Test
    public void getPrivateKey() throws Exception {
        System.out.println(RsaUtils.getPrivateKey(privateFilePath));
    }
}

2.4.认证模块搭建

（1）创建一个名为heima-auth_server的认证模块在这里插入图片描述（2）导入相关依赖


   
        org.springframework.boot
        spring-boot-starter-web
    
    
        org.springframework.boot
        spring-boot-starter-security
    
    
        com.itheima
        heima_common
        1.0-SNAPSHOT
    
    
        mysql
        mysql-connector-java
        5.1.47
    
    
        org.mybatis.spring.boot
        mybatis-spring-boot-starter
        2.1.0

（3）SpringBoot全局配置文件application.yml

server:
  port: 9001
spring:
  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    url: jdbc:mysql:///security_authority
    username: root
    password: 123456
mybatis:
  type-aliases-package: com.itheima.domain
  configuration:
    map-underscore-to-camel-case: true
logging:
  level:
    com.itheima: debug
rsa:
  key:
    pubKeyFile: D:\auth_key\id_key_rsa.pub
    priKeyFile: D:\auth_key\id_key_rsa

（4）创建配置类RsaKeyProperties

package com.itheima.config;

import com.itheima.utils.RsaUtils;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;

import javax.annotation.PostConstruct;
import java.security.PrivateKey;
import java.security.PublicKey;

//配置类
@ConfigurationProperties("rsa.key")
public class RsaKeyProperties {
    
    private String pubKeyFile;
    private String priKeyFile;
    
    private PublicKey publicKey;
    private PrivateKey privateKey;
    
    @PostConstruct
    public void createRsaKey() throws Exception {
        publicKey = RsaUtils.getPublicKey(pubKeyFile);
        privateKey = RsaUtils.getPrivateKey(priKeyFile);
    }
    
    public String getPubKeyFile() {
        return pubKeyFile;
    }
    
    public void setPubKeyFile(String pubKeyFile) {
        this.pubKeyFile = pubKeyFile;
    }
    
    public String getPriKeyFile() {
        return priKeyFile;
    }
    
    public void setPriKeyFile(String priKeyFile) {
        this.priKeyFile = priKeyFile;
    }
    
    public PublicKey getPublicKey() {
        return publicKey;
    }
    
    public void setPublicKey(PublicKey publicKey) {
        this.publicKey = publicKey;
    }
    
    public PrivateKey getPrivateKey() {
        return privateKey;
    }
    
    public void setPrivateKey(PrivateKey privateKey) {
        this.privateKey = privateKey;
    }
}

（5）创建SpringBoot启动类AuthServerApplication

package com.itheima.config;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.context.properties.EnableConfigurationProperties;

//SpringBoot启动类
@SpringBootApplication
@MapperScan("com.itheima.mapper")
@EnableConfigurationProperties(RsaKeyProperties.class)
public class AuthServerApplication {
    
    public static void main(String[] args) {
        SpringApplication.run(AuthServerApplication.class,args);
    }
}

（6）将集中式版本中domain、controller、service、mapper包中的代码复制过来，并作适当修改。（7）重写认证的过滤器

package com.itheima.filter;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.itheima.config.RsaKeyProperties;
import com.itheima.domain.SysRole;
import com.itheima.domain.SysUser;
import com.itheima.utils.JwtUtils;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class JwtLoginFilter extends UsernamePasswordAuthenticationFilter {
    
    private AuthenticationManager authenticationManager;
    private RsaKeyProperties prop;
    
    public JwtLoginFilter(AuthenticationManager authenticationManager, RsaKeyProperties prop) {
        this.authenticationManager = authenticationManager;
        this.prop = prop;
    }
    
    public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response) throws AuthenticationException {
        try {
            SysUser sysUser = new ObjectMapper().readValue(request.getInputStream(), SysUser.class);
            UsernamePasswordAuthenticationToken authRequest = new UsernamePasswordAuthenticationToken(sysUser.getUsername(), sysUser.getPassword());
            return authenticationManager.authenticate(authRequest);
        }catch (Exception e){
            try {
                response.setContentType("application/json;charset=utf-8");
                response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
                PrintWriter out = response.getWriter();
                Map resultMap = new HashMap();
                resultMap.put("code", HttpServletResponse.SC_UNAUTHORIZED);
                resultMap.put("msg", "用户名或密码错误！");
                out.write(new ObjectMapper().writeValueAsString(resultMap));
                out.flush();
                out.close();
            }catch (Exception outEx){
                outEx.printStackTrace();
            }
            throw new RuntimeException(e);
        }
    }
    
    public void successfulAuthentication(HttpServletRequest request, HttpServletResponse response, FilterChain chain, Authentication authResult) throws IOException, ServletException {
        SysUser user = new SysUser();
        user.setUsername(authResult.getName());
        user.setRoles((List) authResult.getAuthorities());
        String token = JwtUtils.generateTokenExpireInMinutes(user, prop.getPrivateKey(), 24 * 60);
        response.addHeader("Authorization", "Bearer "+token);
        try {
            response.setContentType("application/json;charset=utf-8");
            response.setStatus(HttpServletResponse.SC_OK);
            PrintWriter out = response.getWriter();
            Map resultMap = new HashMap();
            resultMap.put("code", HttpServletResponse.SC_OK);
            resultMap.put("msg", "认证通过！");
            out.write(new ObjectMapper().writeValueAsString(resultMap));
            out.flush();
            out.close();
        }catch (Exception outEx){
            outEx.printStackTrace();
        }
    }
}

（8）验证认证的过滤器

package com.itheima.filter;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.itheima.config.RsaKeyProperties;
import com.itheima.domain.Payload;
import com.itheima.domain.SysUser;
import com.itheima.utils.JwtUtils;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.web.authentication.www.BasicAuthenticationFilter;

import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.Map;

public class JwtVerifyFilter extends BasicAuthenticationFilter {
    
    private RsaKeyProperties prop;
    
    public JwtVerifyFilter(AuthenticationManager authenticationManager, RsaKeyProperties prop) {
        super(authenticationManager);
        this.prop = prop;
    }
    
    public void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain chain) throws IOException, ServletException {
        String header = request.getHeader("Authorization");
        if (header == null || !header.startsWith("Bearer ")) {
            //如果携带错误的token，则给用户提示请登录！
            chain.doFilter(request, response);
            response.setContentType("application/json;charset=utf-8");
            response.setStatus(HttpServletResponse.SC_FORBIDDEN);
            PrintWriter out = response.getWriter();
            Map resultMap = new HashMap();
            resultMap.put("code", HttpServletResponse.SC_FORBIDDEN);
            resultMap.put("msg", "请登录！");
            out.write(new ObjectMapper().writeValueAsString(resultMap));
            out.flush();
            out.close();
        } else {
            //如果携带了正确格式的token要先得到token
            String token = header.replace("Bearer ", "");
            //验证tken是否正确
            Payload payload = JwtUtils.getInfoFromToken(token, prop.getPublicKey(), SysUser.class);
            SysUser user = payload.getUserInfo();
            if(user!=null){
                UsernamePasswordAuthenticationToken authResult = new UsernamePasswordAuthenticationToken(user.getUsername(), null, user.getAuthorities());
                SecurityContextHolder.getContext().setAuthentication(authResult);
                chain.doFilter(request, response);
            }
        }
    }
}

（9）配置类编写

package com.itheima.config;

import com.itheima.filter.JwtLoginFilter;
import com.itheima.filter.JwtVerifyFilter;
import com.itheima.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(securedEnabled=true)
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    private UserService userService;

    @Autowired
    private RsaKeyProperties prop;

    @Bean
    public BCryptPasswordEncoder passwordEncoder(){
        return new BCryptPasswordEncoder();
    }

    //指定认证对象的来源
    public void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userService).passwordEncoder(passwordEncoder());
    }
    //SpringSecurity配置信息
    public void configure(HttpSecurity http) throws Exception {
        http.csrf()
            .disable()
            .authorizeRequests()
            .antMatchers("/product").hasAnyRole("USER")
            .anyRequest()
            .authenticated()
            .and()
            .addFilter(new JwtLoginFilter(super.authenticationManager(), prop))
            .addFilter(new JwtVerifyFilter(super.authenticationManager(), prop))
            .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS);
    }
}

（10）测试 ① 模拟登录，并获取登录成功后生成的token 在这里插入图片描述 ② 查询产品列表

2.5.资源服务器搭建

（1）创建资源服务器模块在这里插入图片描述（2）在pom.xml中导入相关的依赖


    
        org.springframework.boot
        spring-boot-starter-web
    
    
        org.springframework.boot
        spring-boot-starter-security
    
    
        com.itheima
        heima_common
        1.0-SNAPSHOT
    
    
        mysql
        mysql-connector-java
        5.1.47
    
    
        org.mybatis.spring.boot
        mybatis-spring-boot-starter
        2.1.0

（3）在SpringBoot全局配置文件application.yml中进行配置

server:
  port: 9002
spring:
  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    url: jdbc:mysql:///security_authority
    username: root
    password: 123456
mybatis:
  type-aliases-package: com.itheima.domain
  configuration:
    map-underscore-to-camel-case: true
logging:
  level:
    com.itheima: debug
rsa:
  key:
    pubKeyFile: E:\auth_key\id_key_rsa.pub

（4）编写SpringBoot启动类

package com.itheima;

import com.itheima.config.RsaKeyProperties;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.context.properties.EnableConfigurationProperties;

@SpringBootApplication
@MapperScan("com.itheima.mapper")
@EnableConfigurationProperties(RsaKeyProperties.class)
public class AuthSourceApplication {
    public static void main(String[] args) {
        SpringApplication.run(AuthSourceApplication.class, args);
    }
}

（5）复制认证服务中的用户对象，角色对象和校验认证的接口

（6）复制认证服务中SpringSecurity配置类做修改（去掉“增加自定义认证过滤器”即可！）

package com.itheima.config;

import com.itheima.filter.JwtVerifyFilter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(securedEnabled=true)
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    private RsaKeyProperties prop;

    //SpringSecurity配置信息
    public void configure(HttpSecurity http) throws Exception {
        http.csrf()
            .disable()
            .authorizeRequests()
            .antMatchers("/product").hasAnyRole("USER")
            .anyRequest()
            .authenticated()
            .and()
            .addFilter(new JwtVerifyFilter(super.authenticationManager(), prop))
            .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS);
    }
}

（7）编写产品控制器方法

package com.itheima.controller;

import org.springframework.security.access.annotation.Secured;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/product")
public class ProductController {

    @Secured("ROLE_PRODUCT")
    @RequestMapping("/findAll")
    public String findAll(){
        return "产品列表查询成功！";
    }
}

此时目录结构如下图：在这里插入图片描述（8）测试（之前登录生成的token还未失效）这里可以看出，当端口号为9002，并且在进行产品管理请求时，携带之前登录生成的token，便可以无需登录而请求成功，这样就简单地实现了分布式的认证。

SpringSecurity整合SpringBoot——集中式版与分布式版

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