springboot整合eureka、config搭建注册中心和配置中心

这篇文章详细介绍怎么通过eureka和config分别搭建一个注册中心和配置中心的服务。

一、springboot整合eureka实现注册中心

1、创建一个springboot项目，并命名为eureka

2、修改pom.xml，添加eureka-server的依赖

因为博主之前整合springcloud的springboot版本用的都是2.3.2.RELEASE，而springboot对应的springcloud版本为Hoxton.SR

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.2.RELEASE</version>
        <relativePath/>
    </parent>

    <groupId>com.example</groupId>
    <artifactId>eureka</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <properties>
        <java.version>1.8</java.version>
        <lombok.version>1.18.22</lombok.version>
        <eureka.version>1.4.4.RELEASE</eureka.version>
    </properties>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Hoxton.SR12</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka-server</artifactId>
            <version>${eureka.version}</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

3、修改配置文件

server:
  port: 9000

eureka:
  instance:
    hostname: localhost # eureka所在的服务器名
  client:
    fetch-registry: false
    register-with-eureka: false
    # eureka提供服务的地址
    service-url:
      defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka

4、启动类上添加注解@EnableEurekaServer

package com.example.eureka;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;

@EnableEurekaServer
@SpringBootApplication
public class EurekaApplication {
    private final static Logger logger = LoggerFactory.getLogger(EurekaApplication.class);

    public static void main(String[] args) {
        if (logger.isDebugEnabled()) {
            logger.debug("启动eureka注册中心......");
        }

        SpringApplication.run(EurekaApplication.class, args);
    }

}

5、启动项目

6、浏览器访问localhost:9000，如果能看到下面的界面，说明eureka配置完成了

二、springboot整合config实现配置中心

1、创建一个springboot项目，并命名为config

2、修改pom.xml，添加config-server的依赖

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.2.RELEASE</version>
        <relativePath/>
    </parent>

    <groupId>cn.edu.sgu.www</groupId>
    <artifactId>config</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <properties>
        <java.version>1.8</java.version>
        <eureka.version>1.4.4.RELEASE</eureka.version>
        <config.version>2.2.8.RELEASE</config.version>
    </properties>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Hoxton.SR12</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-eureka-server</artifactId>
                <version>${eureka.version}</version>
            </dependency>

            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-config-server</artifactId>
                <version>${config.version}</version>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka-server</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-config-server</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

4、修改配置文件，注册到euraka并添加配置中心的配置

这里的配置文件可以存到当前项目下，也可以存到git仓库，还能保存到远程的服务器。

server:
  port: 8888

# 注册到eureka
eureka:
  client:
    service-url:
      defaultZone: http://localhost:9000/eureka

spring:
  application:
    name: config-server
  cloud:
    config:
      server:
        # 本地
#        native:
#          searchLocations: classpath:/config #本地配置的路径 读取/resources/config下的配置
        # 远程git仓库
        git:
          search-paths: config  # 配置文件所在根目录
          uri: https://gitee.com/he-yunlin/repository.git # git仓库地址

5、启动类上添加注解@EnableConfigServer和@EnableEurekaClient

package cn.edu.sgu.www.config;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.config.server.EnableConfigServer;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;

@EnableConfigServer
@EnableEurekaClient
@SpringBootApplication
public class ConfigApplication {
    private final static Logger logger = LoggerFactory.getLogger(ConfigApplication.class);

    public static void main(String[] args) {
        if (logger.isDebugEnabled()) {
            logger.debug("启动config配置中心......");
        }

        SpringApplication.run(ConfigApplication.class, args);
    }

}

5、启动项目

6、浏览器访问localhost:9000，查看服务config是否注册到了eureka上

三、从配置中心拉取配置

经过前面的两步，已经搭建好了配置中心，并且能够正确的注册到注册中心，接下来创建一个服务，从配置中心拉取配置。

1、创建一个springboot项目eureka-client

2、添加maven依赖

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.2.RELEASE</version>
        <relativePath/>
    </parent>

    <groupId>com.example</groupId>
    <artifactId>euraka-client</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <properties>
        <java.version>1.8</java.version>
        <eureka.version>1.4.4.RELEASE</eureka.version>
        <config.version>2.2.8.RELEASE</config.version>
    </properties>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Hoxton.SR12</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-eureka</artifactId>
                <version>${eureka.version}</version>
            </dependency>

            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-config-client</artifactId>
                <version>${config.version}</version>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-config-client</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

3、修改配置文件

server:
  port: 9001

spring:
  application:
    name: eureka-client
  profiles:
    active: dev
  cloud:
    config:
      profile: dev          # 不加此属性直接获取eureka-client.yml，加了后符合config的名字规则eureka-client-dev.yml
      enabled: true
      name: eureka-client   # 配置中心Git仓库config文件夹里的文件名字
      label: master         # 默认分支master
      fail-fast: true       # 是否启动快速失败功能，功能开启则优先判断config server是否正常
      discovery:
        enabled: true
        service-id: config-server  #spring cloud 配置中心服务名

eureka:
  instance:
    hostname: eureka
  client:
    service-url:
      defaultZone: http://localhost:9000/eureka

4、创建一个git仓库，取名为repository，新建一个config包，在config包下新建一个eureka-client-dev.yml，配置项目的启动端口号

server:
  port: 9002

5、启动项目

如果最后项目启动的端口号不是9001，而是9002，说明成功拉取到了配置。

总结：通过手动配置了一下eureka和config，发现一个问题，spring cloud config的uri不能通过配置文件更改，具体原因不详，可能是版本的bug

好了，文章就分享到这里了，接下来将要学习consul

标签： spring boot eureka java

本文转载自: https://blog.csdn.net/heyl163_/article/details/131715281
版权归原作者 Java全栈开发工程师 所有，如有侵权，请联系我们删除。

springboot整合eureka、config搭建注册中心和配置中心

一、springboot整合eureka实现注册中心

二、springboot整合config实现配置中心

三、从配置中心拉取配置

发表评论