SpringCloud 2.x学习笔记：6、高可用的分布式配置中心（Greenwich版本）

￡神魔★判官ぃ 2022-01-15 19:23 121阅读 0赞

## 1、复用服务注册中心 ##

参考https://blog.csdn.net/chengyuqiang/article/details/90645498

spring.application.name=register-server
    server.port=8800
    eureka.client.register-with-eureka=false
    eureka.client.fetch-registry=false
    eureka.client.serviceUrl.defaultZone=http://localhost:8800/eureka/

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## 2、改造config-server ##

### 2.1 pom.xml ###

添加

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

完整的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.cntaiping.tpa</groupId>
        <artifactId>config-server</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <packaging>jar</packaging>
        <name>config-server</name>
        <description>Demo project for Spring Boot</description>
    
        <parent>
            <groupId>com.cntaiping.tpa</groupId>
            <artifactId>config</artifactId>
            <version>1.0-SNAPSHOT</version>
        </parent>
    
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-config-server</artifactId>
            </dependency>
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-jdbc</artifactId>
            </dependency>
        </dependencies>
    
    </project>

### 2.2 application.yml ###

eureka:
      client:
        serviceUrl:
          defaultZone: http://localhost:8800/eureka/
    spring:
      profiles:
        active: jdbc
      application:
        name: config-server
      datasource:
        url: jdbc:mysql://10.17.12.160:3306/config?useUnicode=true&characterEncoding=utf8&characterSetResults=utf8&serverTimezone=GMT%2B8
        username: root
        password: 123456
        driver-class-name: com.mysql.jdbc.Driver
      cloud:
        config:
          label: master
          server:
            jdbc: true
    server:
      port: 8300
    spring.cloud.config.server.jdbc.sql: SELECT key1, value1 from config_properties where APPLICATION=? and PROFILE=? and LABEL=?

### 2.3 Application启动类 ###

添加@EnableEurekaClient

package com.cntaiping.tpa.configserver;
    
    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;
    
    @SpringBootApplication
    @EnableConfigServer
    @EnableEurekaClient
    public class ConfigServerApplication {
    
        public static void main(String[] args) {
            SpringApplication.run(ConfigServerApplication.class, args);
        }
    
    }

### 2.4 启动两个实例 ###

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## 3、改造config-client ##

### 3.1 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.cntaiping.tpa</groupId>
        <artifactId>config-client</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <packaging>jar</packaging>
        <name>config-client</name>
        <description>Demo project for Spring Boot</description>
    
        <parent>
            <groupId>com.cntaiping.tpa</groupId>
            <artifactId>config</artifactId>
            <version>1.0-SNAPSHOT</version>
        </parent>
    
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-config</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
            </dependency>
          
        </dependencies>
    
    </project>

### 3.2 bootstrap.properties ###

spring.application.name=config-client
    eureka.client.serviceUrl.defaultZone=http://localhost:8800/eureka/
    spring.profiles.active=dev
    #spring.cloud.config.uri= http://localhost:8300/
    spring.cloud.config.fail-fast=true
    spring.cloud.config.discovery.enabled=true
    spring.cloud.config.discovery.serviceId=config-server
    server.port=8083

### 3.3 Application类 ###

package com.cntaiping.tpa.configclient;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
    import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
    
    @SpringBootApplication
    @EnableEurekaClient
    @EnableDiscoveryClient
    public class ConfigClientApplication {
    
        public static void main(String[] args) {
            SpringApplication.run(ConfigClientApplication.class, args);
        }
    
    }

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## 3、运行效果 ##

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