Springcloud-eureka Discovering services that call the registry

1. Discovering the services that call the registry requires a consumer with a relative service, first creating a MAVEN project locally, introducing the POM, and the consumer submitting the service to the registry. To send a message as an example

  <parent> <groupId>org.springframework.boot</groupId> <artifactid>spring-boot-starter-par ent</artifactid> <version>1.5.9.RELEASE</version> </parent> <dependencyManagement> &
            Lt;dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>dalston.sr4</version&gt
            ; <type>pom</type> <scope>import</scope> </dependency> </dependenci Es> </dependencyManagement> <dependencies> <!--springboot The integration of each frame is a starter--and Lt;dependency> <groupId>org.springframework.boot</groupId> <artifactid>spring-boot-st Arter-web</artifactid> </dependency> <!--add Ribbon rack packs--<dependency> &L t;groupid&Gt;org.springframework.cloud</groupid> <artifactId>spring-cloud-starter-ribbon</artifactId> </dependency> <!--Send to registration center--<dependency> <groupid>org.springframework.cloud
    
    
  </groupId> <artifactId>spring-cloud-starter-eureka</artifactId> </dependency> </dependencies>

2. Create a application.properties file in src/main/resources, configure conditions, name and port can be defined by themselves but must be unique

#配置访问注册中心的路径
eureka.client.serviceurl.defaultzone= http://localhost:8761/eureka/
#定义唯一的名称
Spring.application.name=sendclient
#定义端口
server.port=815

3. Create a class with the main method, the value of which is the unique name that provides the service party

Package cn.et;

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.cloud.netflix.ribbon.RibbonClient;
Import Org.springframework.context.annotation.Bean;
Import org.springframework.web.client.RestTemplate;
Send to registry
@EnableDiscoveryClient
@SpringBootApplication
//Indicates the service name of the publisher using the Ribbon client value =
Ribbonclient (value= "SENDMAIL") public
class Main {
	
	 @LoadBalanced
	    @Bean
	    resttemplate Resttemplate () {
	        return new resttemplate ();
	    }
	
	public static void Main (string[] args) {
		springapplication.run (main.class, args);
	}
}

4: Create an HTML

<! DOCTYPE html>
 

 

 
5. Create a controller layer


Package cn.et;
Import Java.util.HashMap;

Import Java.util.Map;
Import org.springframework.beans.factory.annotation.Autowired;
Import org.springframework.cloud.client.ServiceInstance;
Import org.springframework.cloud.client.loadbalancer.LoadBalancerClient;
Import org.springframework.http.HttpEntity;
Import Org.springframework.http.HttpHeaders;
Import Org.springframework.stereotype.Controller;
Import org.springframework.web.bind.annotation.GetMapping;
Import Org.springframework.web.bind.annotation.ResponseBody;

Import Org.springframework.web.client.RestTemplate;
	
	@Controller public class Sendcontroller {//Call SendMail Controller @Autowired resttemplate resttemplate;
	
	@Autowired loadbalancerclient load;
		@ResponseBody @GetMapping ("/choose") public String Choose () {StringBuffer su= new StringBuffer (); for (int i=0;i<=10;i++) {serviceinstance ss= load.choose ("SENDMAIL");//Select one from two idserver here involves the selection algorithm su.append (ss.get
		Uri (). toString () + "<br/>"); } return Su.tosTring ();
		} @GetMapping ("/SENDC") public String sends (String emailto,string emailsubject,string emailcenter) {//Invoke Sendmain service
		String controller = "/send"; Get a host from the registry client load Balancer to invoke try{controller+= "? emailto=" +emailto+ "&emailsubject=" +emailsubject+ "&
			Emailcenter= "+emailcenter;
		String result=resttemplate.getforobject ("Http://SENDMAIL" +controller, String.class);
		}catch (Exception e) {return "redirect:/error.html";
	} return "redirect:/suc.html"; } @GetMapping ("/sendclient") public String Send (String emailto,string emailsubject,string emailcenter) {//Call Sendmain
		Service String controller = "/sends";
			Obtain a host from the registry client load Balancer to invoke try{httpheaders headers = new Httpheaders ();    
			Map map=new HashMap ();  
			Map.put ("Emailto", Emailto);  
			Map.put ("EmailSubject", EmailSubject);  
			Map.put ("Emailcenter", Emailcenter);  
			Httpentity<map> request=new httpentity<map> (Map, headers); Resttemplate.postforobject ("Http://SENDMAIL" +controller,Request,string.class);
		}catch (Exception e) {return "redirect:/error.html";
	} return "redirect:/suc.html";
 }

	
}
 

 

 
6. Take out the value of the consumer passed in the provision of the Mail party controller layer


@PostMapping ("/sends") public
	String sends (@RequestBody map map) {
		
		simplemailmessage smm= new Simplemailmessage ();
		Set sender
		smm.setfrom ("zmw960221@126.com");
		Set
		the recipient Smm.setto (Map.get ("Emailto"). toString ());
		Set the message header
		Smm.setsubject (Map.get ("EmailSubject"). toString ());
		Set the message content
		Smm.settext (map.get ("Emailcenter"). toString ());
		Jms.send (SMM);
		return "1";
	}
 

 

 
7. Test whether you can call

1. Run the registration center first

2. Run the submission service party

3. Run the consumer