微服务架构书推荐 微服务架构实战

1.架构图

技术团队通过一段时间的积累后，我们打算对往后的一些新项目采用Spring Cloud技术栈来实现。大概微服务的架构如下：

• Euraka注册中心集群
• Zuul网关集群
• 各模块微服务集群
• Nginx实现负载均衡
• Spring Cloud Config 统一配置中心
• Monitor微服务监控

2.注册中心

注册中心很简单，这里主要说一下注册中心的高可用配置

这里看到我设置了node-1，node-2两个配置文件，就是在启动应用的时候，分别启动不同的配置。

node-1的端口为9010，并向node-2注册，配置如下：

server:
  port: 9010
spring:
  application:
    name: register ##name必须一样，不然高可用会导致unavailable-replicas
eureka:
  instance:
    hostname: register1
  client:
    register-with-eureka: true 
    fetch-registry: true 
    service-url:
      defaultZone: http://register2:9011/eureka/

node-2的端口为9011，并向node-1注册，配置如下：

server:
  port: 9011
spring:
  application:
    name: register 
eureka:
  instance:
    hostname: register2
  client:
    register-with-eureka: true 
    fetch-registry: true 
    service-url:
      defaultZone: http://register1:9010/eureka/

这里注意一下：spring.application.name需要一致，不然会出现unavailable-replicas的情况

3.OAUTH2认证服务器

我这里采用认证服务器与资源服务器分离的方式。

3.1 oauth2 server 配置

我采取了数据库和redis两种方式来存储token，可以方便切换，生成环境下建议使用redis方式。
AuthorizationServer：

@Configuration
@EnableAuthorizationServer
public class AuthorizationServerConfig extends AuthorizationServerConfigurerAdapter {

    @Autowired
    private AuthenticationManager authenticationManager;

    @Autowired
    private DataSource dataSource;
    @Autowired
    private UserDetailsServiceImpl userDetailsService;

    @Autowired
    private RedisConnectionFactory redisConnectionFactory;

    @Bean
    RedisTokenStore redisTokenStore(){
        return new RedisTokenStore(redisConnectionFactory);
    }

    //token存储数据库
//    @Bean
//    public JdbcTokenStore jdbcTokenStore(){
//        return new JdbcTokenStore(dataSource);
//    }

    @Override
    public void configure(ClientDetailsServiceConfigurer clients) throws Exception {
        clients.withClientDetails(clientDetails());
    }
    @Bean
    public ClientDetailsService clientDetails() {
        return new JdbcClientDetailsService(dataSource);
    }
    @Override
    public void configure(AuthorizationServerEndpointsConfigurer endpoints) throws Exception {
        endpoints.tokenStore(redisTokenStore())
                .userDetailsService(userDetailsService)
                .authenticationManager(authenticationManager);
        endpoints.tokenServices(defaultTokenServices());
    }

    /**
     * <p>注意，自定义TokenServices的时候，需要设置@Primary，否则报错，</p>
     * @return
     */
    @Primary
    @Bean
    public DefaultTokenServices defaultTokenServices(){
        DefaultTokenServices tokenServices = new DefaultTokenServices();
        tokenServices.setTokenStore(redisTokenStore());
        tokenServices.setSupportRefreshToken(true);
        tokenServices.setClientDetailsService(clientDetails());
        tokenServices.setAccessTokenValiditySeconds(60*60*12); // token有效期自定义设置，默认12小时
        tokenServices.setRefreshTokenValiditySeconds(60 * 60 * 24 * 7);//默认30天，这里修改
        return tokenServices;
    }

    @Override
    public void configure(AuthorizationServerSecurityConfigurer security) throws Exception {
        security.tokenKeyAccess("permitAll()");
        security .checkTokenAccess("isAuthenticated()");
        security.allowFormAuthenticationForClients();
    }
}

WebSecurityConfig：

@Configuration
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
    @Autowired
    private UserDetailsServiceImpl userDetailsService;

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

    @Override
    @Bean
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }
    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userDetailsService)
            .passwordEncoder(passwordEncoder());
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
                .authorizeRequests()
                .anyRequest().authenticated()
                .and()
                .formLogin().and()
                .csrf().disable()
                .httpBasic();
    }

    @Override
    public void configure(WebSecurity web) throws Exception {
        web.ignoring().antMatchers("/favor.ioc");
    }

}

3.2 ResourceServer

因为我们认证中心会提供User信息，所以也是资源服务器。

@Configuration
@EnableResourceServer
public class ResourceServerConfig extends ResourceServerConfigurerAdapter{
    @Override
    public void configure(HttpSecurity http) throws Exception {
        http.
                csrf().disable()
                .exceptionHandling()
                .authenticationEntryPoint(new Http401AuthenticationEntryPoint("Bearer realm=\"webrealm\""))
                .and()
                .authorizeRequests().anyRequest().authenticated()
                .and()
                .httpBasic();
    }
}

4.资源服务器 Resource

ResourceServer：

@Configuration
@EnableResourceServer
public class ResourceServerConfig extends ResourceServerConfigurerAdapter {
    @Override
    public void configure(HttpSecurity http) throws Exception {
        http.
                csrf().disable()
                .exceptionHandling()
                .authenticationEntryPoint(new Http401AuthenticationEntryPoint("Bearer realm=\"webrealm\""))
                .and()
                .authorizeRequests().anyRequest().authenticated()
                .and()
                .httpBasic();
    }
}

主要是application.yml的配置

security:
  oauth2:
    resource:
      id: resource
      user-info-uri: http://10.10.8.2:9030/uaa/user
      prefer-token-info: false

**user-info-uri是对应网关地址，关于网关下面会介绍。上面的架构图也说明了，我们采用Nginx实现负载均衡，在使用Nginx的时候，那user-info-uri就换为Nginx的地址，这样才能实现Gateway的负载均衡 **

5.1开启支持Sso

@Configuration
@EnableOAuth2Sso
public class SecurityConfig extends WebSecurityConfigurerAdapter{

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.csrf().disable();
    }
}

5.2配置

spring:
  application:
    name: Gateway
  zipkin:
    base-url: http://10.10.8.2:9050
server:
  port: 9030
eureka:
  instance:
    prefer-ip-address: true #使用IP注册
    instance-id: ${spring.cloud.client.ipAddress}:${server.port}
 
  client:
      service-url:
        defaultZone: http://register1:9010/eureka/,http://register2:9011/eureka/
###actuator监控点 start####
endpoints:
  health:
    sensitive: false
    enabled: true
##默认情况下很多端点是不允许访问的，会返回401:Unauthorized
management:
  security:
    enabled: false
###actuator监控点 end####
zuul:
  host:
    connect-timeout-millis: 10000
    socket-timeout-millis: 60000
  routes:
    uaa:
      path: /uaa/**
      strip-prefix: true
      sensitiveHeaders:
      serviceId: auth2.0-center
security:
  basic:
    enabled: false
  oauth2:
    client:
      access-token-uri: http://10.10.8.2:9030/uaa/oauth/token ##网关的地址
      user-authorization-uri: http://10.10.8.2:9030/uaa/oauth/authorize
    resource:
      user-info-uri:  http://10.10.8.2:9030/uaa/user
      prefer-token-info: false
##############end#####################
####超时配置####
ribbon:
  ReadTimeout: 10000
  ConnectTimeout: 10000
  MaxAutoRetries: 1
  MaxAutoRetriesNextServer: 2
  eureka:
    enabled: true
hystrix:
  command:
    default:
      execution:
        timeout:
          enabled: true
        isolation:
          thread:
            timeoutInMilliseconds: 600000
###超时配置###

6.展示

分别启动register、auth-center、gateway、resource。效果如下：

6.1获取access_token

2.

3.

6.2刷新token

6.3用access_token获取资源

7.结束

到这里Spring Cloud OAUTH2.0统一认证的骨架就完成了，具体项目拿过来修改就可以满足项目的需求了。