单点登录SSO解决方案之SpringSecurity+JWT实现

快来打我* 2023-06-19 09:50 30阅读 0赞

通过前面几天文章我们详细的介绍了`SpringSecurity`的使用，本文我们来看下，结合`JWT`来实现`单点登录`操作。

# 一、什么是单点登陆 #

`单点登录`（Single Sign On），简称为 `SSO`，是目前比较流行的企业业务整合的解决方案之一。SSO的定义是在多个应用系统中，用户只需要登录一次就可以访问所有相互信任的应用系统

# 二、简单的运行机制 #

单点登录的机制其实是比较简单的，用一个现实中的例子做比较。某公园内部有许多独立的景点，游客可以在各个景点门口单独买票。对于需要游玩所有的景点的游客，这种买票方式很不方便，需要在每个景点门口排队买票，钱包拿 进拿出的，容易丢失，很不安全。于是绝大多数游客选择在大门口买一张通票（也叫套票），就可以玩遍所有的景点而不需要重新再买票。他们只需要在每个景点门 口出示一下刚才买的套票就能够被允许进入每个独立的景点。  
单点登录的机制也一样，如下图所示，

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9kcGItYm9ib2thb3lhLXNtLmJsb2cuY3Nkbi5uZXQ_size_16_color_FFFFFF_t_70]

`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，即图中的认证系统，注意认证系统只能有一个。  
`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，即图中的应用系统2 3

# 三、JWT介绍 #

## 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。

## JWT生成token的安全性分析 ##

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！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。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！

## 非对称加密RSA介绍 ##

`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  
优点：安全，难以破解  
缺点：算法比较耗时，为了安全，可以接受  
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。

# 四、SpringSecurity整合JWT #

## 1.认证思路分析 ##

SpringSecurity主要是通过过滤器来实现功能的！我们要找到SpringSecurity实现认证和校验身份的过滤器！

### 回顾集中式认证流程 ###

`用户认证`：  
  使用`UsernamePasswordAuthenticationFilter`过滤器中`attemptAuthentication`方法实现认证功能，该过滤器父类中`successfulAuthentication`方法实现认证成功后的操作。  
`身份校验`：  
  使用`BasicAuthenticationFilter`过滤器中`doFilterInternal`方法验证是否登录，以决定能否进入后续过滤器。

### 分析分布式认证流程 ###

`用户认证`：  
  由于分布式项目，多数是前后端分离的架构设计，我们要满足可以接受异步post的认证请求参数，需要修改UsernamePasswordAuthenticationFilter过滤器中attemptAuthentication方法，让其能够接收请求体。  
  另外，默认successfulAuthentication方法在认证通过后，是把用户信息直接放入session就完事了，现在我们需要修改这个方法，在认证通过后生成token并返回给用户。  
`身份校验`：  
  原来BasicAuthenticationFilter过滤器中doFilterInternal方法校验用户是否登录，就是看session中是否有用户信息，我们要修改为，验证用户携带的token是否合法，并解析出用户信息，交给SpringSecurity，以便于后续的授权功能可以正常使用。

## 2.具体实现 ##

为了演示单点登录的效果，我们设计如下项目结构  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9kcGItYm9ib2thb3lhLXNtLmJsb2cuY3Nkbi5uZXQ_size_16_color_FFFFFF_t_70 1]

### 2.1父工程创建 ###

因为本案例需要创建多个系统，所以我们使用maven聚合工程来实现，首先创建一个父工程，导入springboot的父依赖即可

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.3.RELEASE</version>
        <relativePath/>
    </parent>

### 2.2公共工程创建 ###

然后创建一个common工程，其他工程依赖此系统  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9kcGItYm9ib2thb3lhLXNtLmJsb2cuY3Nkbi5uZXQ_size_16_color_FFFFFF_t_70 2]  
导入JWT相关的依赖

<dependencies>
        <dependency>
            <groupId>io.jsonwebtoken</groupId>
            <artifactId>jjwt-api</artifactId>
            <version>0.10.7</version>
        </dependency>
        <dependency>
            <groupId>io.jsonwebtoken</groupId>
            <artifactId>jjwt-impl</artifactId>
            <version>0.10.7</version>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>io.jsonwebtoken</groupId>
            <artifactId>jjwt-jackson</artifactId>
            <version>0.10.7</version>
            <scope>runtime</scope>
        </dependency>
        
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.9.9</version>
        </dependency>
        
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-logging</artifactId>
        </dependency>
        <dependency>
            <groupId>joda-time</groupId>
            <artifactId>joda-time</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
        </dependency>
    </dependencies>

创建相关的工具类  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9kcGItYm9ib2thb3lhLXNtLmJsb2cuY3Nkbi5uZXQ_size_16_color_FFFFFF_t_70 3]

Payload

/** * @program: springboot-54-security-jwt-demo * @description: * @author: 波波烤鸭 * @create: 2019-12-03 10:28 */
    @Data
    public class Payload <T>{ 
        private String id;
        private T userInfo;
        private Date expiration;
    }

JsonUtils

package com.dpb.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;
    
    /** * @author: 波波烤鸭 **/
    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> T toBean(String json, Class<T> tClass) { 
            try { 
                return mapper.readValue(json, tClass);
            } catch (IOException e) { 
                logger.error("json解析出错：" + json, e);
                return null;
            }
        }
    
        public static <E> List<E> toList(String json, Class<E> 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 <K, V> Map<K, V> toMap(String json, Class<K> kClass, Class<V> 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> T nativeRead(String json, TypeReference<T> type) { 
            try { 
                return mapper.readValue(json, type);
            } catch (IOException e) { 
                logger.error("json解析出错：" + json, e);
                return null;
            }
        }
    }

JwtUtils

package com.dpb.utils;
    
    import com.dpb.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;
    
    /** * @author: 波波烤鸭 * 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<Claims> */
        private static Jws<Claims> 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 <T> Payload<T> getInfoFromToken(String token, PublicKey publicKey, Class<T> userType) { 
            Jws<Claims> claimsJws = parserToken(token, publicKey);
            Claims body = claimsJws.getBody();
            Payload<T> 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 <T> Payload<T> getInfoFromToken(String token, PublicKey publicKey) { 
            Jws<Claims> claimsJws = parserToken(token, publicKey);
            Claims body = claimsJws.getBody();
            Payload<T> claims = new Payload<>();
            claims.setId(body.getId());
            claims.setExpiration(body.getExpiration());
            return claims;
        }
    }

RsaUtils

package com.dpb.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;
    
    /** * @author 波波烤鸭 */
    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);
        }
    }

在通用子模块中编写测试类生成rsa公钥和私钥

/** * @program: springboot-54-security-jwt-demo * @description: * @author: 波波烤鸭 * @create: 2019-12-03 11:08 */
    public class JwtTest { 
        private String privateKey = "c:/tools/auth_key/id_key_rsa";
    
        private String publicKey = "c:/tools/auth_key/id_key_rsa.pub";
    
        @Test
        public void test1() throws Exception{ 
            RsaUtils.generateKey(publicKey,privateKey,"dpb",1024);
        }
    
    }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9kcGItYm9ib2thb3lhLXNtLmJsb2cuY3Nkbi5uZXQ_size_16_color_FFFFFF_t_70 4]

## 2.3认证系统创建 ##

接下来我们创建我们的认证服务。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9kcGItYm9ib2thb3lhLXNtLmJsb2cuY3Nkbi5uZXQ_size_16_color_FFFFFF_t_70 5]

### 导入相关的依赖 ###

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>
        <dependency>
            <artifactId>security-jwt-common</artifactId>
            <groupId>com.dpb</groupId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.47</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.1.0</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.10</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
            <optional>true</optional>
        </dependency>
    </dependencies>

### 创建配置文件 ###

spring:
      datasource:
        driver-class-name: com.mysql.jdbc.Driver
        url: jdbc:mysql://localhost:3306/srm
        username: root
        password: 123456
        type: com.alibaba.druid.pool.DruidDataSource
    mybatis:
      type-aliases-package: com.dpb.domain
      mapper-locations: classpath:mapper/*.xml
    logging:
      level:
        com.dpb: debug
    rsa:
      key:
        pubKeyFile: c:\tools\auth_key\id_key_rsa.pub
        priKeyFile: c:\tools\auth_key\id_key_rsa

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9kcGItYm9ib2thb3lhLXNtLmJsb2cuY3Nkbi5uZXQ_size_16_color_FFFFFF_t_70 6]

### 提供公钥私钥的配置类 ###

package com.dpb.config;
    
    import com.dpb.utils.RsaUtils;
    import lombok.Data;
    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;
    
    /** * @program: springboot-54-security-jwt-demo * @description: * @author: 波波烤鸭 * @create: 2019-12-03 11:25 */
    @Data
    @ConfigurationProperties(prefix = "rsa.key")
    public class RsaKeyProperties { 
    
        private String pubKeyFile;
        private String priKeyFile;
    
        private PublicKey publicKey;
        private PrivateKey privateKey;
    
        /** * 系统启动的时候触发 * @throws Exception */
        @PostConstruct
        public void createRsaKey() throws Exception { 
            publicKey = RsaUtils.getPublicKey(pubKeyFile);
            privateKey = RsaUtils.getPrivateKey(priKeyFile);
        }
    
    }

### 创建启动类 ###

/** * @program: springboot-54-security-jwt-demo * @description: 启动类 * @author: 波波烤鸭 * @create: 2019-12-03 11:23 */
    @SpringBootApplication
    @MapperScan("com.dpb.mapper")
    @EnableConfigurationProperties(RsaKeyProperties.class)
    public class App { 
    
        public static void main(String[] args) { 
            SpringApplication.run(App.class,args);
        }
    }

### 完成数据认证的逻辑 ###

pojo

package com.dpb.domain;
    
    import com.fasterxml.jackson.annotation.JsonIgnore;
    import lombok.Data;
    import org.springframework.security.core.GrantedAuthority;
    
    /** * @program: springboot-54-security-jwt-demo * @description: * @author: 波波烤鸭 * @create: 2019-12-03 15:21 */
    @Data
    public class RolePojo implements GrantedAuthority { 
    
        private Integer id;
        private String roleName;
        private String roleDesc;
    
        @JsonIgnore
        @Override
        public String getAuthority() { 
            return roleName;
        }
    }

package com.dpb.domain;
    
    import com.fasterxml.jackson.annotation.JsonIgnore;
    import lombok.Data;
    import org.springframework.security.core.GrantedAuthority;
    import org.springframework.security.core.authority.SimpleGrantedAuthority;
    import org.springframework.security.core.userdetails.UserDetails;
    
    import java.util.ArrayList;
    import java.util.Collection;
    import java.util.List;
    
    /** * @program: springboot-54-security-jwt-demo * @description: * @author: 波波烤鸭 * @create: 2019-12-03 11:33 */
    @Data
    public class UserPojo implements UserDetails { 
    
        private Integer id;
    
        private String username;
    
        private String password;
    
        private Integer status;
    
        private List<RolePojo> roles;
    
        @JsonIgnore
        @Override
        public Collection<? extends GrantedAuthority> getAuthorities() { 
            List<SimpleGrantedAuthority> auth = new ArrayList<>();
            auth.add(new SimpleGrantedAuthority("ADMIN"));
            return auth;
        }
    
        @Override
        public String getPassword() { 
            return this.password;
        }
    
        @Override
        public String getUsername() { 
            return this.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;
        }
    }

Mapper接口

public interface UserMapper { 
        public UserPojo queryByUserName(@Param("userName") String userName);
    }

Mapper映射文件

<?xml version="1.0" encoding="UTF-8" ?>
    <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
    <mapper namespace="com.dpb.mapper.UserMapper">
        <select id="queryByUserName" resultType="UserPojo">
            select * from t_user where username = #{userName}
        </select>
    </mapper>

Service

public interface UserService extends UserDetailsService { 
    
    }

@Service
    @Transactional
    public class UserServiceImpl implements UserService { 
    
        @Autowired
        private UserMapper mapper;
    
        @Override
        public UserDetails loadUserByUsername(String s) throws UsernameNotFoundException { 
            UserPojo user = mapper.queryByUserName(s);
    
            return user;
        }
    }

### 自定义认证过滤器 ###

package com.dpb.filter;
    
    import com.dpb.config.RsaKeyProperties;
    import com.dpb.domain.RolePojo;
    import com.dpb.domain.UserPojo;
    import com.dpb.utils.JwtUtils;
    import com.fasterxml.jackson.databind.ObjectMapper;
    import net.bytebuddy.agent.builder.AgentBuilder;
    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.core.authority.SimpleGrantedAuthority;
    import org.springframework.security.core.userdetails.User;
    import org.springframework.security.core.userdetails.UserDetails;
    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.ArrayList;
    import java.util.HashMap;
    import java.util.List;
    import java.util.Map;
    
    /** * @program: springboot-54-security-jwt-demo * @description: * @author: 波波烤鸭 * @create: 2019-12-03 11:57 */
    public class TokenLoginFilter extends UsernamePasswordAuthenticationFilter { 
    
        private AuthenticationManager authenticationManager;
        private RsaKeyProperties prop;
    
        public TokenLoginFilter(AuthenticationManager authenticationManager, RsaKeyProperties prop) { 
            this.authenticationManager = authenticationManager;
            this.prop = prop;
        }
    
        public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response) throws AuthenticationException { 
            try { 
                UserPojo sysUser = new ObjectMapper().readValue(request.getInputStream(), UserPojo.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 { 
            UserPojo user = new UserPojo();
            user.setUsername(authResult.getName());
            user.setRoles((List<RolePojo>)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();
            }
        }
    }

### 自定义校验token的过滤器 ###

package com.dpb.filter;
    
    import com.dpb.config.RsaKeyProperties;
    import com.dpb.domain.Payload;
    import com.dpb.domain.UserPojo;
    import com.dpb.utils.JwtUtils;
    import com.fasterxml.jackson.databind.ObjectMapper;
    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;
    
    /** * @program: springboot-54-security-jwt-demo * @description: * @author: 波波烤鸭 * @create: 2019-12-03 12:39 */
    public class TokenVerifyFilter  extends BasicAuthenticationFilter { 
        private RsaKeyProperties prop;
    
        public TokenVerifyFilter(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<UserPojo> payload = JwtUtils.getInfoFromToken(token, prop.getPublicKey(), UserPojo.class);
                UserPojo user = payload.getUserInfo();
                if(user!=null){ 
                    UsernamePasswordAuthenticationToken authResult = new UsernamePasswordAuthenticationToken(user.getUsername(), null, user.getAuthorities());
                    SecurityContextHolder.getContext().setAuthentication(authResult);
                    chain.doFilter(request, response);
                }
            }
        }
    
    }

\#\#\#编写SpringSecurity的配置类

package com.dpb.config;
    
    import com.dpb.filter.TokenLoginFilter;
    import com.dpb.filter.TokenVerifyFilter;
    import com.dpb.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;
    
    /** * @program: springboot-54-security-jwt-demo * @description: * @author: 波波烤鸭 * @create: 2019-12-03 12:41 */
    @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("/user/query").hasAnyRole("ADMIN")
                    .anyRequest()
                    .authenticated()
                    .and()
                    .addFilter(new TokenLoginFilter(super.authenticationManager(), prop))
                    .addFilter(new TokenVerifyFilter(super.authenticationManager(), prop))
                    .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS);
        }
    }

### 启动服务测试 ###

启动服务  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9kcGItYm9ib2thb3lhLXNtLmJsb2cuY3Nkbi5uZXQ_size_16_color_FFFFFF_t_70 7]

通过Postman来访问测试  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9kcGItYm9ib2thb3lhLXNtLmJsb2cuY3Nkbi5uZXQ_size_16_color_FFFFFF_t_70 8]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9kcGItYm9ib2thb3lhLXNtLmJsb2cuY3Nkbi5uZXQ_size_16_color_FFFFFF_t_70 9]

根据token信息我们访问其他资源

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9kcGItYm9ib2thb3lhLXNtLmJsb2cuY3Nkbi5uZXQ_size_16_color_FFFFFF_t_70 10]

## 2.4资源系统创建 ##

`说明`  
资源服务可以有很多个，这里只拿产品服务为例，记住，资源服务中只能通过公钥验证认证。不能签发token！创建产品服务并导入jar包根据实际业务导包即可，咱们就暂时和认证服务一样了。

接下来我们再创建一个资源服务  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9kcGItYm9ib2thb3lhLXNtLmJsb2cuY3Nkbi5uZXQ_size_16_color_FFFFFF_t_70 11]

### 导入相关的依赖 ###

### 编写产品服务配置文件 ###

切记这里只能有公钥地址！

server:
      port: 9002
    spring:
      datasource:
        driver-class-name: com.mysql.jdbc.Driver
        url: jdbc:mysql://localhost:3306/srm
        username: root
        password: 123456
        type: com.alibaba.druid.pool.DruidDataSource
    mybatis:
      type-aliases-package: com.dpb.domain
      mapper-locations: classpath:mapper/*.xml
    logging:
      level:
        com.dpb: debug
    rsa:
      key:
        pubKeyFile: c:\tools\auth_key\id_key_rsa.pub

### 编写读取公钥的配置类 ###

package com.dpb.config;
    
    import com.dpb.utils.RsaUtils;
    import lombok.Data;
    import org.springframework.boot.context.properties.ConfigurationProperties;
    
    import javax.annotation.PostConstruct;
    import java.security.PrivateKey;
    import java.security.PublicKey;
    
    /** * @program: springboot-54-security-jwt-demo * @description: * @author: 波波烤鸭 * @create: 2019-12-03 11:25 */
    @Data
    @ConfigurationProperties(prefix = "rsa.key")
    public class RsaKeyProperties { 
    
        private String pubKeyFile;
    
        private PublicKey publicKey;
    
        /** * 系统启动的时候触发 * @throws Exception */
        @PostConstruct
        public void createRsaKey() throws Exception { 
            publicKey = RsaUtils.getPublicKey(pubKeyFile);
        }
    
    }

### 编写启动类 ###

package com.dpb;
    
    import com.dpb.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;
    
    /** * @program: springboot-54-security-jwt-demo * @description: * @author: 波波烤鸭 * @create: 2019-12-03 17:23 */
    @SpringBootApplication
    @MapperScan("com.dpb.mapper")
    @EnableConfigurationProperties(RsaKeyProperties.class)
    public class App { 
    
        public static void main(String[] args) { 
            SpringApplication.run(App.class,args);
        }
    }

### 复制认证服务中，用户对象，角色对象和校验认证的接口 ###

复制认证服务中的相关内容即可

### 复制认证服务中SpringSecurity配置类做修改 ###

package com.dpb.config;
    
    import com.dpb.filter.TokenVerifyFilter;
    import com.dpb.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;
    
    /** * @program: springboot-54-security-jwt-demo * @description: * @author: 波波烤鸭 * @create: 2019-12-03 12:41 */
    @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("/user/query").hasAnyRole("USER")
                    .anyRequest()
                    .authenticated()
                    .and()
                    .addFilter(new TokenVerifyFilter(super.authenticationManager(), prop))
                    // 禁用掉session
                    .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS);
        }
    }

去掉“增加自定义认证过滤器”即可！

### 编写产品处理器 ###

package com.dpb.controller;
    
    import org.springframework.security.access.annotation.Secured;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    /** * @program: springboot-54-security-jwt-demo * @description: * @author: 波波烤鸭 * @create: 2019-12-03 11:55 */
    @RestController
    @RequestMapping("/user")
    public class UserController { 
    
        @RequestMapping("/query")
        public String query(){ 
            return "success";
        }
    
        @RequestMapping("/update")
        public String update(){ 
            return "update";
        }
    }

### 测试 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9kcGItYm9ib2thb3lhLXNtLmJsb2cuY3Nkbi5uZXQ_size_16_color_FFFFFF_t_70 12]

搞定~

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9kcGItYm9ib2thb3lhLXNtLmJsb2cuY3Nkbi5uZXQ_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20191205174331994.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9kcGItYm9ib2thb3lhLXNtLmJsb2cuY3Nkbi5uZXQ=,size_16,color_FFFFFF,t_70
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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9kcGItYm9ib2thb3lhLXNtLmJsb2cuY3Nkbi5uZXQ_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20191205175340538.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9kcGItYm9ib2thb3lhLXNtLmJsb2cuY3Nkbi5uZXQ=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9kcGItYm9ib2thb3lhLXNtLmJsb2cuY3Nkbi5uZXQ_size_16_color_FFFFFF_t_70 3]: https://img-blog.csdnimg.cn/20191205175413988.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9kcGItYm9ib2thb3lhLXNtLmJsb2cuY3Nkbi5uZXQ=,size_16,color_FFFFFF,t_70
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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9kcGItYm9ib2thb3lhLXNtLmJsb2cuY3Nkbi5uZXQ_size_16_color_FFFFFF_t_70 7]: https://img-blog.csdnimg.cn/20191205181643805.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9kcGItYm9ib2thb3lhLXNtLmJsb2cuY3Nkbi5uZXQ=,size_16,color_FFFFFF,t_70
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