一、开发注册中心eureka服务

添加依赖

    <!--eureka依赖-->
    <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
    </dependency>
    <!--actoator依赖-->
    <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>

application.properties配置文件

  #应用名称
  spring.application.name=eureka-server
  #端口号
  server.port=8761
  #HOST地址
  spring.cloud.client.ipAddress=192.168.22.78
  #注册中心地址
  eureka.client.service-url.default-zone=http://${spring.cloud.client.ipAddress}:${server.port}/eureka/
  #不向注册中心注册自己
  eureka.client.register-with-eureka=false
  #不从注册中心获取注册信息
  eureka.client.fetch-registry=false

启动类中增加启用注册中心服务

//启用注册中心
@EnableEurekaServer
@SpringBootApplication
public class EurekaServerApplication {
    public static void main(String[] args) {
        SpringApplication.run(EurekaServerApplication.class, args);
    }
}

二：开发服务提供者PROVIDER-USER

添加依赖

    <!--actoator依赖-->
    <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>
    <!--jpa依赖-->
    <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>
    <!--web依赖-->
    <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
     </dependency>
    <!--eureka依赖()-->
     <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
     </dependency>

application.properties配置文件

#应用名称
spring.application.name=provider-user
#端口号
server.port=8000
#HOST地址
spring.cloud.client.ipAddress=192.168.22.78
#注册中心地址
eureka.client.service-url.default-zone=http://192.168.22.78:8761/eureka/
eureka.instance.prefer-ip-address=true
eureka.instance.metadata-map.my-metadata:我自定义的元数据
#数据库配置
spring.jpa.generate-ddl=false
spring.jpa.show-sql=true
spring.jpa.hibernate.ddl-auto=update
spring.datasource.platform=h2
spring.datasource.schema=classpath:sql/schema.sql
spring.datasource.data=classpath:sql/data.sql

#配置日志
logging.level.root=INFO
logging.level.org.hibernate=INFO
logging.level.org.hibernate.type.descriptor.sql.BasicBinder=TRACE
logging.level.org.hibernate.type.descriptor.sql.BasicExtractor=TRACE

#配置info端点信息
info.app.name=@project.artifactId@
info.app.encoding=@project.build.sourceEncoding@
info.app.java.source=${java.version}
info.app.java.target=${java.version}

启动类中增加启用注册中心服务

@SpringBootApplication
//启用注册中心
@EnableDiscoveryClient
public class ProviderUserApplication {
    public static void main(String[] args) {
        SpringApplication.run(ProviderUserApplication.class, args);
    }
}

开发对外接口查询用户信息

@RestController
public class UserController {
    @Autowired
    private UserRepository userRepository;
    @GetMapping("/{id}")
    public User findById(@PathVariable Long id){
        Optional<User> op = userRepository.findById(id);
        return op.get();
    }
}

三：开发消费者CONSUMER-MOVIE

添加依赖

    <!--actoator依赖-->
    <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>
    <!-- 熔断-->
    <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
    </dependency>
    <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>
    </dependency>
    <!--web依赖-->
    <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
     </dependency>
    <!--eureka依赖()-->
     <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
     </dependency>

application.properties配置文件

#应用名称
spring.application.name=consumer-movie
#端口号
server.port=8010
#注册中心地址
eureka.client.service-url.default-zone=http://192.168.22.78:8761/eureka/
eureka.instance.prefer-ip-address=true

启动类中增加启用注册中心服务

@EnableDiscoveryClient
@SpringBootApplication
@EnableCircuitBreaker
public class ConsumerMovieApplication {
    @Bean
    @LoadBalanced
    public RestTemplate restTemplate(){
        return new RestTemplate();
    }
      // SpringBoot2.0以后，不提供 hystrix.stream节点，需要自己增加
    @Bean
    public ServletRegistrationBean getServlet(){
        HystrixMetricsStreamServlet streamServlet = new HystrixMetricsStreamServlet();
        ServletRegistrationBean registrationBean = new ServletRegistrationBean(streamServlet);
        registrationBean.setLoadOnStartup(1);
        registrationBean.addUrlMappings("/actuator/hystrix.stream");
        registrationBean.setName("HystrixMetricsStreamServlet");
        return registrationBean;
    }
    public static void main(String[] args) {
        SpringApplication.run(ConsumerMovieApplication.class, args);
    }
}

调用PROVIDER-USER接口，查询用户信息

@RestController
public class MovieController {
    private static final Logger logger = LoggerFactory.getLogger(MovieController.class);

    @Autowired
    private RestTemplate restTemplate;

    @Autowired
    private DiscoveryClient discoveryClient;

    @GetMapping("/user/{id}")
    @HystrixCommand(fallbackMethod = "findByIdFallback")
    public User findById(@PathVariable Long id) {
        return this.restTemplate.getForObject("http://PROVIDER-USER/" + id, User.class);
    }
    public User findByIdFallback(Long id){
        User user = new User();
        user.setId(-1L);
        user.setName("默认用户");
        return user;
    }
    @GetMapping("/user-instance")
    public List<ServiceInstance> showInfo() {
        return this.discoveryClient.getInstances("PROVIDER-USER");
    }
}

四：开发消费者二CONSUMER-MOVIE-FEGIN-CLIENT

具体步骤同第三步

五、开发监控平台

添加依赖

    <!--监控平台依赖-->
     <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>
     </dependency>

application.properties配置文件

#端口号
server.port=8030

启动类中增加启用注册中心服务

@SpringBootApplication
@EnableHystrixDashboard
public class HystrixDashboardApplication {
    public static void main(String[] args) {
        SpringApplication.run(HystrixDashboardApplication.class, args);
    }
}

六、开发聚合服务Turbine

添加依赖

    <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>
    <!-- 熔断-->
    <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
    </dependency>
    <!--聚合依赖-->
    <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-turbine</artifactId>
    </dependency>

application.properties配置文件

#端口号
server.port=8031
#项目名称
spring.application.name=hystrix-turbine
#注册中心地址
eureka.client.service-url.default-zone=http://192.168.22.78:8761/eureka/
eureka.instance.prefer-ip-address=true
#turbine聚合
# 指定聚合哪些集群，多个使用","分割，默认为default。可使用http://.../turbine.stream?cluster={clusterConfig之一}访问
turbine.aggregator.cluster-config=default

turbine.cluster-name-expression= new String("default")
turbine.app-config=consumer-movie,consumer-movie-fegin-client
#这里和被监控启动类里的 registrationBean.addUrlMappings("/hystrix.stream")一致
turbine.instanceUrlSuffix=/actuator/hystrix.stream

启动类中增加启用注册中心服务

@SpringBootApplication
@EnableTurbine
public class HystrixTurbineApplication {

    public static void main(String[] args) {
        SpringApplication.run(HystrixTurbineApplication.class, args);
    }
}

七、启动查看结果

1、启动项目：eureka-server
2、启动项目：provider-user
3、启动项目：consumer-movie
4、启动项目：consumer-movie-fegin-client
5、启动项目：hystrix-dashboard
6、启动项目：hystrix-turbine
7、访问http://localhost:8010/user/1让consumer-movie微服务产生监控数据。
8、访问http://localhost:8011/user/1让consumer-movie-fegin-client微服务产生监控数据。
9、打开Hystrix Dashboard 首页 http://localhost:8030/hystrix,在URL一栏填入http://localhost:8031/turbine.stream，随意指定一个Title并点击Monitor Stream按钮，结果类似于下图

image.png