Registering and discovering services with spring Cloud consul

First install the consul environment, referring to the previous article: http://blog.csdn.net/mn960mn/article/details/51753893

Project planning, 2 service-side, 1 clients

First look at the service side,

One: server 1:

Project Dependencies

<dependencyManagement>
	<dependencies>
		<dependency>
			<groupId> Org.springframework.cloud</groupid>
			<artifactid>spring-cloud-consul-dependencies</ artifactid>
			<version>1.0.1.RELEASE</version>
			<type>pom</type>
			<scope >import</scope>
		</dependency>
	</dependencies>
</dependencyManagement>

<dependencies>
	<dependency>
		<groupid>org.springframework.boot</groupid >
		<artifactId>spring-boot-actuator</artifactId>
		<version>1.3.5.release</ version>
	</dependency>
	<dependency>
		<groupId>org.springframework.cloud< /groupid>
		<artifactId>spring-cloud-starter-consul-discovery</artifactId>
	</ Dependency>
</dependencies>

Note that adding Spring-boot-actuator is for the project to have access to the/health path to determine whether the service is healthy

Package com.pp.consul1;

Import org.springframework.boot.SpringApplication;
Import org.springframework.boot.autoconfigure.SpringBootApplication;
Import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
Import org.springframework.web.bind.annotation.RequestMapping;
Import Org.springframework.web.bind.annotation.RestController;

@SpringBootApplication
@EnableDiscoveryClient
@RestController public
class Consulapp {
	
	@ Requestmapping ("Home") public
	Object () {
		System.out.println ("1111111111111");
		return "OK11";
	}
	
    public static void Main (string[] args) {
    	springapplication.run (consulapp.class, args);
    }
}

Application.properties Configuration Content

server.port=9955

spring.application.name=consul-server-1
spring.cloud.consul.host=192.168.1.100
spring.cloud.consul.port=8500
spring.cloud.consul.enabled=true
spring.cloud.consul.discovery.enabled= True
spring.cloud.consul.discovery.instanceid=tomcat1
spring.cloud.consul.discovery.servicename=tomcat
spring.cloud.consul.discovery.hostname=192.168.2.95
Spring.cloud.consul.discovery.port=${server.port}
Spring.cloud.consul.discovery.healthcheckurl=http://192.168.2.95:9955/health
Spring.cloud.consul.discovery.healthcheckinterval=10s
Spring.cloud.consul.discovery.tags=dev

Read my previous article, should be very clear about these configurations. In this way, a service side is configured to write well.

Since we added @enablediscoveryclient annotations, when the system starts, it will register a service with Consul, with the name Tomcat and ID TOMCAT1

The HTTP api/v1/catalog/service/tomcat output for accessing consul is as follows:

{
	"Node": "192.168.1.100",
	"Address": "192.168.1.100",
	"ServiceID": "Tomcat1",
	"ServiceName": " Tomcat ",
	" servicetags ": [" Dev "],
	" serviceaddress ":" 192.168.2.95 ",
	" Serviceport ": 9955,
	" Serviceenabletagoverride ": false,
	" CreateIndex ": 993,
	" Modifyindex ": 1057
}

Two: Service Side 2

Project dependencies are the same as above

Package com.pp.consul2;

Import org.springframework.boot.SpringApplication;
Import org.springframework.boot.autoconfigure.SpringBootApplication;
Import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
Import org.springframework.web.bind.annotation.RequestMapping;
Import Org.springframework.web.bind.annotation.RestController;

@SpringBootApplication
@EnableDiscoveryClient
@RestController public
class Consulapp {
	
	@ Requestmapping ("Home") public
	Object () {
		System.out.println ("2222222222222222");
		return "OK22";
	}
	
    public static void Main (string[] args) {
    	springapplication.run (consulapp.class, args);
    }
}

Application.properties Configuration content:

server.port=9966

spring.application.name=consul-server-2
spring.cloud.consul.host=192.168.1.100
spring.cloud.consul.port=8500
spring.cloud.consul.enabled=true
spring.cloud.consul.discovery.enabled= True
spring.cloud.consul.discovery.instanceid=tomcat2
spring.cloud.consul.discovery.servicename=tomcat
spring.cloud.consul.discovery.hostname=192.168.2.95
Spring.cloud.consul.discovery.port=${server.port}
Spring.cloud.consul.discovery.healthcheckurl=http://192.168.2.95:9966/health
Spring.cloud.consul.discovery.healthcheckinterval=10s
Spring.cloud.consul.discovery.tags=test

Three: Client

Project dependent, only need spring-cloud-starter-consul-discovery

Application.properties Configuration content:

server.port=9977

spring.application.name=consul-client
spring.cloud.consul.host=192.168.1.100
spring.cloud.consul.port=8500
Spring.cloud.consul.discovery.register=false

Note that the spring.cloud.consul.discovery.register here needs to be configured to False, or the system will be started by registering a service with consul

Package com.pp.client;
Import org.springframework.beans.factory.annotation.Autowired;
Import org.springframework.boot.SpringApplication;
Import org.springframework.boot.autoconfigure.SpringBootApplication;
Import org.springframework.cloud.client.discovery.DiscoveryClient;
Import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
Import org.springframework.cloud.client.loadbalancer.LoadBalancerClient;
Import org.springframework.web.bind.annotation.RequestMapping;

Import Org.springframework.web.bind.annotation.RestController; @SpringBootApplication @EnableDiscoveryClient @RestController public class Consulclient {@Autowired private Loadbala
	
	Ncerclient LoadBalancer;
	
	@Autowired private discoveryclient discoveryclient; /** * Select a service from all services (polling) */@RequestMapping ("/discover") public Object Discover () {return loadbalancer.choose ("Tomc
	At "). GetURI (). toString (); }/** * Get all Services */@RequestMapping ("/services") public Object Services () {return discoVeryclient.getinstances ("Tomcat");
    } public static void Main (string[] args) {Springapplication.run (consulclient.class, args);
 }
}

Once started, you can access the/discover,/services to see the effect.