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這期內容當中小編將會給大家帶來有關怎么在Spring Cloud中使用Consul實現服務注冊和發現,文章內容豐富且以專業的角度為大家分析和敘述,閱讀完這篇文章希望大家可以有所收獲。
一:服務端1:
項目依賴
<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是為了項目可以訪問/health 路徑來判斷服務是否健康
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); } }
application.properties 配置內容
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=${server.port} spring.cloud.consul.discovery.healthCheckUrl=http://192.168.2.95:9955/health spring.cloud.consul.discovery.healthCheckInterval=10s spring.cloud.consul.discovery.tags=dev
看過我之前文章的,應該對這些配置很清楚了。這樣,一個服務端就配置寫好了。
由于我們增加了@EnableDiscoveryClient注解,所以,系統啟動的時候,就會向consul注冊一個服務,服務的名字為tomcat, ID為tomcat1
訪問consul的HTTP API /v1/catalog/service/tomcat 輸出如下:
{ "Node":"192.168.1.100", "Address":"192.168.1.100", "ServiceID":"tomcat1", "ServiceName":"tomcat", "ServiceTags":["dev"], "ServiceAddress":"192.168.2.95", "ServicePort":9955, "ServiceEnableTagOverride":false, "CreateIndex":993, "ModifyIndex":1057 }
二:服務端2
項目依賴和上面一樣
package com.pp.consul2; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.client.discovery.EnableDiscoveryClient; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @SpringBootApplication @EnableDiscoveryClient @RestController public class ConsulApp { @RequestMapping("/home") public Object home() { System.out.println("2222222222222222"); return "OK22"; } public static void main( String[] args ) { SpringApplication.run(ConsulApp.class, args); } }
application.properties 配置內容:
server.port=9966 spring.application.name=Consul-Server-2 spring.cloud.consul.host=192.168.1.100 spring.cloud.consul.port=8500 spring.cloud.consul.enabled=true spring.cloud.consul.discovery.enabled=true spring.cloud.consul.discovery.instanceId=tomcat2 spring.cloud.consul.discovery.serviceName=tomcat spring.cloud.consul.discovery.hostname=192.168.2.95 spring.cloud.consul.discovery.port=${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
三:客戶端
項目依賴,只需要spring-cloud-starter-consul-discovery
application.properties 配置內容:
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
注意,這里的spring.cloud.consul.discovery.register需要配置成false,否則系統啟動的時候,會向consul注冊一個服務
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; /** * 從所有服務中選擇一個服務(輪詢) */ @RequestMapping("/discover") public Object discover() { return loadBalancer.choose("tomcat").getUri().toString(); } /** * 獲取所有服務 */ @RequestMapping("/services") public Object services() { return discoveryClient.getInstances("tomcat"); } public static void main( String[] args ) { SpringApplication.run(ConsulClient.class, args); } }
上述就是小編為大家分享的怎么在Spring Cloud中使用Consul實現服務注冊和發現了,如果剛好有類似的疑惑,不妨參照上述分析進行理解。如果想知道更多相關知識,歡迎關注億速云行業資訊頻道。
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