首先安装consul环境,参照之前的文章:http://www.zzvips.com/article/142903.html
项目规划,2个服务端,1个客户端
首先来看服务端,
一:服务端1:
项目依赖
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<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>
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注意,增加spring-boot-actuator是为了项目可以访问/health 路径来判断服务是否健康
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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 home() {
system.out.println( "1111111111111" );
return "ok11" ;
}
public static void main( string[] args ) {
springapplication.run(consulapp. class , args);
}
}
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application.properties 配置内容
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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
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看过我之前文章的,应该对这些配置很清楚了。这样,一个服务端就配置写好了。
由于我们增加了@enablediscoveryclient注解,所以,系统启动的时候,就会向consul注册一个服务,服务的名字为tomcat, id为tomcat1
访问consul的http api /v1/catalog/service/tomcat 输出如下:
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{
"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
}
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二:服务端2
项目依赖和上面一样
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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 home() {
system.out.println( "2222222222222222" );
return "ok22" ;
}
public static void main( string[] args ) {
springapplication.run(consulapp. class , args);
}
}
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application.properties 配置内容:
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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
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三:客户端
项目依赖,只需要spring-cloud-starter-consul-discovery
application.properties 配置内容:
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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
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注意,这里的spring.cloud.consul.discovery.register需要配置成false,否则系统启动的时候,会向consul注册一个服务
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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 loadbalancerclient loadbalancer;
@autowired
private discoveryclient discoveryclient;
/**
* 从所有服务中选择一个服务(轮询)
*/
@requestmapping ( "/discover" )
public object discover() {
return loadbalancer.choose( "tomcat" ).geturi().tostring();
}
/**
* 获取所有服务
*/
@requestmapping ( "/services" )
public object services() {
return discoveryclient.getinstances( "tomcat" );
}
public static void main( string[] args ) {
springapplication.run(consulclient. class , args);
}
}
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启动之后,就可以访问/discover,/services 查看效果了。
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/mn960mn/article/details/51775212