简单描述一下springcloud的服务注册流程
1.搭建服务注册中心
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.cfh</groupId>
<artifactId>eureka-server</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>eureka-server</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.3.7.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<spring-cloud.version>Brixton.SR5</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka-server</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
开启服务注册中心(@EnableEurekaserver)
package com.cfh.eurekaserver;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
//开启服务注册中心
@EnableEurekaServer
@SpringBootApplication
public class EurekaServerApplication {
public static void main(String[] args) {
SpringApplication.run(EurekaServerApplication.class, args);
}
}
配置properties.yaml
server:
port: 1111
eureka:
instance:
hostname: localhost
client:
register-with-eureka: false #禁止注册中心注册自己
fetch-registry: false #禁止注册中心检索服务
serviceUrl:
defaultzone: http://${eureka.instance.hostname}:${server.port}
2.向服务中心注册一个服务
1.创建一个服务
2.@EnableEurekaClient
package com.cfh.eurekarigister;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
//激活服务的DiscoveryClient实现
@EnableDiscoveryClient
@SpringBootApplication
public class EurekaRigisterApplication {
public static void main(String[] args) {
SpringApplication.run(EurekaRigisterApplication.class, args);
}
}
3 打印日志查看服务的注册情况
package com.cfh.eurekarigister.controller;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class HelloController {
private final Logger logger = LoggerFactory.getLogger(HelloController.class);
@Autowired
private DiscoveryClient client;
@RequestMapping("/hello")
public String hello(){
ServiceInstance instance = client.getLocalServiceInstance();
logger.info("/hello,host:"+ instance.getHost() + ",serviceId:"+ instance.getServiceId());
return "hello";
}
}
4.修改application.yaml文件
#命名服务名称
spring:
application:
name: hello-service
eureka:
client:
serviceUrl:
defaultZone: http://localhost:1111/eureka #服务注册中心的地址