Spring Cloud Security 整合 JWT

一、基础概述

• 在Oauth2 + Spring Cloud Security的项目环境中， Spring Cloud Security 默认把访问令牌保存在内存中。而在分布式环境中，我们可以利用JWT或Redis存储令牌信息，以便于多个服务的使用。

• JWT是JSON WEB TOKEN的缩写，它是基于 RFC 7519 标准定义的一种可以安全传输的的JSON对象，由于使用了数字签名，所以是可信任和安全的。

• JWT token 的格式为 header.payload.signature：

  • header

    {
      "alg": "HS256",
      "typ": "JWT"
    }
    

  • payload

    {
      "exp": 1572682831,
      "user_name": "zhangsan",
      "authorities": [
        "client"
      ],
      "jti": "c1a0645a-28b5-4468-b4c7-9623131853af",
      "client_id": "admin",
      "scope": [
        "all"
      ]
    }
    

  • signature

    signature为以header和payload生成的签名，一旦header和payload被篡改，验证将失败

• JWT token 的官网：https://jwt.io/

  

二、利用Redis存储令牌

• 添加依赖

  <dependency>
      <groupId>org.springframework.bootgroupId>
      <artifactId>spring-boot-starter-data-redisartifactId>
  dependency>
  

• 添加配置

  server:
    port: 8080
    servlet:
      context-path: /
  
  spring:
    application:
      name: oauth-redis
    redis:
      database: 0
      host: 127.0.0.1
      port: 6379
      password: 
  

• 添加Redis存储配置类

  @Configuration
  public class RedisTokenStoreConfig {
  
      @Autowired
      private RedisConnectionFactory redisConnectionFactory;
  
      @Bean
      public TokenStore redisTokenStore (){
          return new RedisTokenStore(redisConnectionFactory);
      }
  }
  

• 修改认证服务器配置类

  @Configuration
  @EnableAuthorizationServer
  public class AuthorizationServerConfig extends AuthorizationServerConfigurerAdapter {
  
      @Autowired
      private PasswordEncoder passwordEncoder;
  
      @Autowired
      private AuthenticationManager authenticationManager;
  
      @Autowired
      private UserDetailServiceImpl userDetailsService;
  
      @Autowired
      @Qualifier("redisTokenStore")
      private TokenStore tokenStore;
      
      /**
       * 使用密码模式所需配置
       */
      @Override
      public void configure(AuthorizationServerEndpointsConfigurer endpoints) {
          endpoints.authenticationManager(authenticationManager)
                  .userDetailsService(userDetailsService)
              	// 配置令牌存储策略
              	.tokenStore(tokenStore);
      }
  }
  

• 获取访问令牌

  使用Postman工具

  

  

  

• 查看Redis信息

  

三、利用JWT存储令牌

• 添加JWT存储配置类

  @Configuration
  public class JwtTokenStoreConfig {
  
      @Bean
      public TokenStore jwtTokenStore() {
          return new JwtTokenStore(jwtAccessTokenConverter());
      }
  
      @Bean
      public JwtAccessTokenConverter jwtAccessTokenConverter() {
          JwtAccessTokenConverter accessTokenConverter = new JwtAccessTokenConverter();
          // 配置JWT使用的秘钥
          accessTokenConverter.setSigningKey("test_key");
          return accessTokenConverter;
      }
  }
  

• 修改认证服务器配置类

  @Configuration
  @EnableAuthorizationServer
  public class AuthorizationServerConfig extends AuthorizationServerConfigurerAdapter {
  
      @Autowired
      private PasswordEncoder passwordEncoder;
  
      @Autowired
      private AuthenticationManager authenticationManager;
  
      @Autowired
      private UserDetailServiceImpl userDetailsService;
  
      @Autowired
      @Qualifier("jwtTokenStore")
      private TokenStore tokenStore;
      @Autowired
      private JwtAccessTokenConverter jwtAccessTokenConverter;
      
      /**
       * 使用密码模式所需配置
       */
      @Override
      public void configure(AuthorizationServerEndpointsConfigurer endpoints) {
          endpoints.authenticationManager(authenticationManager)
                  .userDetailsService(userDetailsService)
              	// 配置令牌存储策略
              	.tokenStore(tokenStore)
                  .accessTokenConverter(jwtAccessTokenConverter);
      }
  }
  

• 获取访问令牌

  使用Postman工具

  

  

  

• 查看JWT信息

  将得到的 access_token 去https://jwt.io/ 网站进行解析

  

四、扩展JWT的存储内容

• 添加内容扩展类

  public class JwtTokenEnhancer implements TokenEnhancer {
      
      @Override
      public OAuth2AccessToken enhance(
          	OAuth2AccessToken accessToken, OAuth2Authentication authentication) {
          
          Map<String, Object> info = new HashMap<>();
          info.put("add_key", "add_value");
          ((DefaultOAuth2AccessToken) accessToken).setAdditionalInformation(info);
          
          return accessToken;
      }
  }
  

• 修改JWT存储配置类

  @Configuration
  public class JwtTokenStoreConfig {
  
      @Bean
      public TokenStore jwtTokenStore() {
          return new JwtTokenStore(jwtAccessTokenConverter());
      }
  
      @Bean
      public JwtAccessTokenConverter jwtAccessTokenConverter() {
          JwtAccessTokenConverter accessTokenConverter = new JwtAccessTokenConverter();
          // 配置JWT使用的秘钥
          accessTokenConverter.setSigningKey("test_key");
          return accessTokenConverter;
      }
      
      @Bean
      public JwtTokenEnhancer jwtTokenEnhancer() {
          return new JwtTokenEnhancer();
      }
  }
  

• 修改认证服务器配置类

  ![20210325194754](C:/Users/jihongye/Documents/Scrshot/20210325194754.png@Configuration
  @EnableAuthorizationServer
  public class AuthorizationServerConfig extends AuthorizationServerConfigurerAdapter {
  
      @Autowired
      private PasswordEncoder passwordEncoder;
  
      @Autowired
      private AuthenticationManager authenticationManager;
  
      @Autowired
      private UserDetailServiceImpl userDetailsService;
  
      @Autowired
      @Qualifier("jwtTokenStore")
      private TokenStore tokenStore;
      @Autowired
      private JwtAccessTokenConverter jwtAccessTokenConverter;
      @Autowired
      private JwtTokenEnhancer jwtTokenEnhancer;
      
      /**
       * 使用密码模式所需配置
       */
      @Override
      public void configure(AuthorizationServerEndpointsConfigurer endpoints) {
          TokenEnhancerChain enhancerChain = new TokenEnhancerChain();
          
          List<TokenEnhancer> delegates = new ArrayList<>();
          delegates.add(jwtTokenEnhancer); 
          delegates.add(jwtAccessTokenConverter);
          
          enhancerChain.setTokenEnhancers(delegates);
          
          endpoints.authenticationManager(authenticationManager)
                  .userDetailsService(userDetailsService)
              	// 配置令牌存储策略
              	.tokenStore(tokenStore)
                  .accessTokenConverter(jwtAccessTokenConverter)
              	.tokenEnhancer(enhancerChain);
      }
  }
  

• 查看JWT信息

  

五、解析JWT存储的内容

• 添加依赖

  <dependency>
      <groupId>io.jsonwebtokengroupId>
      <artifactId>jjwtartifactId>
      <version>0.9.0version>
  dependency>
  

• 测试使用

  public class ApplicationTest {
      
      public void test() {
           public void test() {
          String token = "jwt的token字符串";
          
          Object obj = Jwts.parser()
                  .setSigningKey("test_key".getBytes(StandardCharsets.UTF_8))
                  .parseClaimsJws(token)
                  .getBody();
          
       	System.out.println(object);   
      }   
      }
  }
  

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【源码地址】：GitHub