首先安装consul环境，参照之前的文章：http://www.tuohang.net/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> |
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@restcontrollerpublic class consulapp { @requestmapping("/home") public object home() { system.out.println("1111111111111"); return "ok11"; } public static void main( string[] args ) { springapplication.run(consulapp.class, args); } } |
application.properties 配置内容
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server.port=9955spring.application.name=consul-server-1spring.cloud.consul.host=192.168.1.100spring.cloud.consul.port=8500spring.cloud.consul.enabled=truespring.cloud.consul.discovery.enabled=truespring.cloud.consul.discovery.instanceid=tomcat1 spring.cloud.consul.discovery.servicename=tomcat spring.cloud.consul.discovery.hostname=192.168.2.95spring.cloud.consul.discovery.port=${server.port} spring.cloud.consul.discovery.healthcheckurl=http://192.168.2.95:9955/health spring.cloud.consul.discovery.healthcheckinterval=10s spring.cloud.consul.discovery.tags=dev |
看过我之前文章的，应该对这些配置很清楚了。这样，一个服务端就配置写好了。
由于我们增加了@enablediscoveryclient注解，所以，系统启动的时候，就会向consul注册一个服务，服务的名字为tomcat, id为tomcat1
访问consul的http api /v1/catalog/service/tomcat 输出如下：
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{ "node":"192.168.1.100", "address":"192.168.1.100", "serviceid":"tomcat1", "servicename":"tomcat", "servicetags":["dev"], "serviceaddress":"192.168.2.95", "serviceport":9955, "serviceenabletagoverride":false, "createindex":993, "modifyindex":1057} |
二：服务端2
项目依赖和上面一样
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package com.pp.consul2; import org.springframework.boot.springapplication; import org.springframework.boot.autoconfigure.springbootapplication; import org.springframework.cloud.client.discovery.enablediscoveryclient; import org.springframework.web.bind.annotation.requestmapping; import org.springframework.web.bind.annotation.restcontroller; @springbootapplication@enablediscoveryclient@restcontrollerpublic class consulapp { @requestmapping("/home") public object home() { system.out.println("2222222222222222"); return "ok22"; } public static void main( string[] args ) { springapplication.run(consulapp.class, args); } } |
application.properties 配置内容：
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server.port=9966 spring.application.name=consul-server-2spring.cloud.consul.host=192.168.1.100spring.cloud.consul.port=8500spring.cloud.consul.enabled=truespring.cloud.consul.discovery.enabled=truespring.cloud.consul.discovery.instanceid=tomcat2 spring.cloud.consul.discovery.servicename=tomcat spring.cloud.consul.discovery.hostname=192.168.2.95spring.cloud.consul.discovery.port=${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 |
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=192.168.1.100spring.cloud.consul.port=8500spring.cloud.consul.discovery.register=false |
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@restcontrollerpublic 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); } } |
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
