注册服务端Eureka

依赖

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
<?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">
    <parent>
        <artifactId>SpringcCloud</artifactId>
        <groupId>org.example</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>Springcloud-Eureka-7001</artifactId>
    <dependencies>
        <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-eureka-server -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka-server</artifactId>
            <version>1.4.7.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <version>2.3.4.RELEASE</version>
        </dependency>
    </dependencies>

</project>

配置文件：

1
2
3
4
5
6
7
8
9
10
11
server:
  port: 7001

eureka:
  instance:
    hostname: localhost
  client:
    register-with-eureka: false #是否向注册中心注册自己，由于自己就是注册中心，所以这个选项为false
    fetch-registry: true #s 是否是注册中心
    service-url:
      defaultZone: Http://${eureka.instance.hostname}:${server.port}/eureka

这里实现了动态管理地址。使用${}来取值；

关于配置文件的defaultZone的来源：

image-20201023210011801

image-20201023205801863

明显可以看出来，serviceUrl的一个属性就叫做defaultZone，我们要想改变就是在里面改写属性；

主启动类

1
2
3
4
5
6
7
8
9
10
11
12
13
package com.saxon.springcloud;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;

@SpringBootApplication
@EnableEurekaServer
public class Springcloud_Eureka {
    public static void main (String[] args) {
        SpringApplication.run (Springcloud_Eureka.class,args);
    }
}

启动的时候，如果出现版本问题就去网上寻找答案；