创建一个普通的springboot项目,Dependencies中选择Web->Spring Web Starter 以及 Spring Cloud Discovery->Consul Discovery,生成的pom.xml如下所示
4.0.0
org.springframework.boot
spring-boot-starter-parent
2.1.6.RELEASE
com.example
demo
0.0.1-SNAPSHOT
demo
Demo project for Spring Boot
1.8
Greenwich.SR1
org.springframework.boot
spring-boot-starter-web
org.springframework.cloud
spring-cloud-starter-consul-discovery
org.springframework.boot
spring-boot-starter-test
test
org.springframework.boot
spring-boot-starter-actuator
org.springframework.cloud
spring-cloud-dependencies
${spring-cloud.version}
pom
import
org.springframework.boot
spring-boot-maven-plugin
在applicaiton.ml中添加如下配置
spring:
cloud:
consul:
host: localhost
port: 8500
discovery:
healthCheckPath: /health #健康检查路径
healthCheckInterval: 15s #健康检查时间间隔
instance-id: myconsul #唯一ID,在consul中不能重复
enabled: true
service-name: datacenter-coreservice #服务名,同一服务名下可有多个节点
tags: name=hr# 类似于注释,官网说是类似于元数据,我也不懂,不过可以自己解析成需要的数据
enabled: true
创建一个Controller提供健康检查的接口
@RestController
public class ConsulController {
@GetMapping("/health")
public String health(){
return "health";
}
}
配置完以后启动项目就会向consul 服务器注册,不过要记得开启consul服务哦!
windows中consul的安装与本地启动
https://blog.csdn.net/j903829182/article/details/80960802
如果需要自己获取consul 服务器的信息,下面的博客有consul下的常用接口地址:
consul的各种接口地址:
https://blog.csdn.net/u010246789/article/details/51871051
如果需要搭建consul 集群,可参考以下博客:
linux 搭建consul集群:
https://blog.csdn.net/qq_25934401/article/details/82459486#commentBox
https://www.cnblogs.com/shanyou/p/6286207.html
默认注册consul的服务id为服务名-端口号,相同的服务名和端口号注册会覆盖;
解决方式一:
添加随机数
instance-id: myconsul${random.uuid} #缺点很明显,可读性差,而且在不同版本consul中,有的重启后不会自动删除之前的不存在的id
解决方式二:
代码中自定义ID,加上IP等信息则唯一
import com.ecwid.consul.v1.ConsulClient;
import com.ecwid.consul.v1.agent.model.NewService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.consul.discovery.ConsulDiscoveryProperties;
import org.springframework.cloud.consul.discovery.HeartbeatProperties;
import org.springframework.cloud.consul.discovery.TtlScheduler;
import org.springframework.cloud.consul.serviceregistry.ConsulRegistration;
import org.springframework.cloud.consul.serviceregistry.ConsulServiceRegistry;
/**
* 自定义consul注册id
*/
public class RpsConsulServiceRegistry extends ConsulServiceRegistry {
private static ILog logger = LogManager.getLogger(RpsConsulServiceRegistry.class);
@Autowired
private CustomConfig customConfig;
public RpsConsulServiceRegistry(ConsulClient client, ConsulDiscoveryProperties properties, TtlScheduler ttlScheduler, HeartbeatProperties heartbeatProperties) {
super(client, properties, ttlScheduler, heartbeatProperties);
}
@Override
public void register(ConsulRegistration reg) {
// 重新设计id,此处用的是名字也可以用其他方式例如instanceid、host、uri等
reg.getService()
.setId(
reg.getService().getName() + "-" + reg.getService().getAddress() + "-" + reg.getPort());
//在linux服务器上ip格式为10-20-33-258 这种格式,需要修改为10.20.33.258
if (!"DEV".equals(customConfig.getEnv())) {
reg.getService().setAddress(reg.getHost().replace("-", "."));
}
//使用代码注册后,yml配置中的注册信息则会失效,需要自己添加健康检查等配置
NewService.Check check = new NewService.Check();
check.setHttp("http://" + reg.getHost() + ":" + reg.getPort() + "/health");
check.setInterval("10s");
check.setTimeout("1s");
check.setMethod("GET");
reg.getService().setCheck(check);
super.register(reg);
}
}
放入容器
import com.ecwid.consul.v1.ConsulClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.consul.discovery.ConsulDiscoveryProperties;
import org.springframework.cloud.consul.discovery.HeartbeatProperties;
import org.springframework.cloud.consul.discovery.TtlScheduler;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@Configuration
public class RpsConsulServiceRegistryConfig {
@Autowired(required = false)
private TtlScheduler ttlScheduler;
@Bean
public RpsConsulServiceRegistry consulServiceRegistry(
ConsulClient consulClient,
ConsulDiscoveryProperties properties,
HeartbeatProperties heartbeatProperties) {
return new RpsConsulServiceRegistry(
consulClient, properties, ttlScheduler, heartbeatProperties);
}
}
解决方法参考博客
https://www.cnblogs.com/zhucww/p/10770327.html