springboot distributed registry of springcloud-Eureka

1, create a new blank project, create a new module, named eureka-server, select eureka server. Create a new Module, named provider-ticket, select the eureka discovery client. Create a new Module, named consumer-user, select the eureka discovery client.

2, set the service registry. Eureka-server disposed in the application.properties:

8761 = server.port
 # hostname 
eureka.instance.hostname = eureka- Server
 # does not register itself to the Eureka 
eureka.client.register-with-Eureka = false
 # is not up for registration information and services from Eureka 
eureka.client. = Registry-FETCH to false 
eureka.client.service -url.defaultZone = HTTP: // localhost: 8761 / Eureka /

At the same time plus @EnableEurekaServer comment on its boot entry. Start the server enter localhost: 8761

3, registration services

Require reintroduction spring-boot-starter-web initiator. The provider-ticket in the configuration application.properties:

8001 = server.port 
spring.application.name = provider- Ticket
 # registered to use the service when the service ip address 
eureka.instance.prefer-ip-address = to true 
eureka.client.service -url.defaultZone = HTTP: // localhost : 8761 / eureka /

Create a new controller package:

package com.gong.providerticket.controller;

import com.gong.providerticket.service.TicketService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class TicketController {
    @Autowired
    TicketService ticketService;

    @GetMapping("/ticket")
    public String getTicket(){
        return ticketService.getTicket();
    }
}

Create a new service package:

package com.gong.providerticket.service;

import org.springframework.stereotype.Service;

@Service
public class TicketService {

    public String getTicket(){return "唐人街探案3";
    }
}

Then use maven packaged. The package lay out on the copy in a folder, and add the suffix 8001. Modify port = 8002, then to package, copy the package lay out on a folder, and add the suffix 8002. Placed into a file folder, each running with java -jar.

Then refresh: http: // localhost: 8761 /

Two services are registered came.

4, found that the service and consumption

Require reintroduction spring-boot- starter-web initiator. The first is the consumer-user in application.properties

server.port=8200
spring.application.name=consumer-user
#注册服务的时候使用服务的ip地址
eureka.instance.prefer-ip-address=true
eureka.client.service-url.defaultZone=http://localhost:8761/eureka/

然后是启动入口文件中：

package com.gong.consumeruser;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.context.annotation.Bean;
import org.springframework.web.client.RestTemplate;


@EnableDiscoveryClient
@SpringBootApplication
public class ConsumerUserApplication {

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

    @LoadBalanced//使用负载均衡机制
    @Bean
    public RestTemplate restTemplate(){
        return new RestTemplate();
    }
}

接着新建一个controller包：

package com.gong.consumeruser.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

@RestController
public class UserController {

    @Autowired
    RestTemplate restTemplate;

    @GetMapping("/buy")
    public String buyTicket(String name){
        return name+"购买了"+restTemplate.getForObject("http://PROVIDER-TICKET/ticket",String.class);
    }
}

启动服务器：输入localhost:8200

说明是启动成功了，再看下http://localhost:8761/

也成功注册到注册中心了。

接着我们去访问：localhost:8200/buy?name=张三

成功的从provider-ticket那里获取到了信息。

由于使用了负载均衡，所以每次请求都会轮流访问8001端口和8002端口。

springboot distributed registry of springcloud-Eureka

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