Spring Cloud简单项目创建

一、Zuul

Zuul的主要功能是路由转发和过滤器。路由功能是微服务的一部分，比如／api/user转发到到user服务，/api/shop转发到到shop服务。zuul默认和Ribbon结合实现了负载均衡的功能。

1.配置文件application.yml加上以下的配置代码

eureka:

  client:

    serviceUrl:

      defaultZone: http://localhost:8761/eureka/

server:

  port: 8769

spring:

  application:

    name: service-zuul

zuul:

  routes:

    api-a:

      path: /api-a/**

      serviceId: service-ribbon

    api-b:

      path: /api-b/**

      serviceId: service-feign

2.在入口applicaton类加上注解@EnableZuulProxy，开启zuul的功能

@EnableZuulProxy

@EnableEurekaClient

@SpringBootApplication

public class ServiceZuulApplication {

    public static void main(String[] args) {

        SpringApplication.run(ServiceZuulApplication.class, args);

    }

}

3.请求接口

http://localhost:8769/api-a/hi?name=forezp

二、ribbon

原文链接

ribbon是一个负载均衡客户端，可以很好的控制http和tcp的一些行为。Feign默认集成了ribbon。

1.在工程的配置文件指定服务的注册中心地址为http://localhost:8761/eureka/，程序名称为 service-ribbon，程序端口为8764。配置文件application.yml如下：

eureka:

  client:

    serviceUrl:

      defaultZone: http://localhost:8761/eureka/

server:

  port: 8764

spring:

  application:

    name: service-ribbon

2.项目代码

启动类

@SpringBootApplication

@EnableDiscoveryClient

public class ServiceRibbonApplication {

    public static void main(String[] args) {

        SpringApplication.run(ServiceRibbonApplication.class, args);

    }

    @Bean

    @LoadBalanced

    RestTemplate restTemplate() {

        return new RestTemplate();

    }

}

Controller层

@RestController

public class HelloControler {

    @Autowired

    HelloService helloService;

    @RequestMapping(value = "/hi")

    public String hi(@RequestParam String name){

        return helloService.hiService(name);

    }

}

Service层

@Service

public class HelloService {

    @Autowired

    RestTemplate restTemplate;

    public String hiService(String name) {

        return restTemplate.getForObject("http://SERVICE-HI/hi?name="+name,String.class);

    }

}

三、接口项目

原文链接

1.配置

eureka:

  client:

    serviceUrl:

      defaultZone: http://localhost:8761/eureka/

server:

  port: 8762

spring:

  application:

    name: service-hi

@SpringBootApplication

@EnableEurekaClient

@RestController

public class ServiceHiApplication {

    public static void main(String[] args) {

        SpringApplication.run(ServiceHiApplication.class, args);

    }

}

2.接口

@RequestMapping("/hi")

public String home(@RequestParam String name) {

    return "hi "+name+",i am from port:" +port;

}

四、注册服务中心

原文链接

1.启动类

@EnableEurekaServer

@SpringBootApplication

public class EurekaserverApplication {

    public static void main(String[] args) {

        SpringApplication.run(EurekaserverApplication.class, args);

    }

}

2.配置

server:

  port: 8761

eureka:

  instance:

    hostname: localhost

  client:

    registerWithEureka: false

    fetchRegistry: false

    serviceUrl:

      defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/

巴特西

Spring Cloud简单项目创建

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