首先安装consul环境，参照之前的文章：https://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快网idc。
原文链接：https://blog.csdn.net/mn960mn/article/details/51775212
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