Spring Cloud Config为分布式系统中的外部配置提供服务器和客户端支持
Spring Cloud Config 分为
Config Server:
分布式配置中心,是一个独立的微服务应用,用来连接配置服务器并为客户端提供获取配置信息
Config Client:
通过指定配置中心来管理应用资源,以及与业务相关的配置内容,并在启动的时候从配置中心获取和加载配置信息
Spring boot版本2.1.8.RELEASE
服务中心使用Consu
1.配置中心(服务端)
easy-config
(1)添加依赖
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!--配置中心--> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-config-server</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-consul-discovery</artifactId> </dependency>
(2)配置
添加bootstrap.properties
server.port=8091 spring.application.name=easy-config spring.cloud.consul.host=localhost spring.cloud.consul.port=8500 spring.cloud.consul.discovery.service-name=${spring.application.name} spring.cloud.consul.discovery.instance-id=${spring.application.name}:${server.port} management.endpoints.web.exposure.include=* management.endpoint.health.show-details=always spring.profiles.active=native spring.cloud.config.server.native.search-locations=classpath:/config/
(3)修改启动类
package com.tydt.easy.config; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.config.server.EnableConfigServer; @EnableConfigServer @SpringBootApplication public class EasyConfigApplication { public static void main(String[] args) { SpringApplication.run(EasyConfigApplication.class, args); } }
2.客户端
easy-api
(1)添加依赖
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-consul-discovery</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-config</artifactId> </dependency>
(2)配置
添加配置bootstrap.properties
server.port=8083 spring.application.name=easy-api spring.profiles.active=dev spring.cloud.consul.host=localhost spring.cloud.consul.port=8500 spring.cloud.consul.discovery.health-check-path=/actuator/health spring.cloud.consul.discovery.service-name=${spring.application.name} spring.cloud.consul.discovery.heartbeat.enabled=true management.endpoints.web.exposure.include=* management.endpoint.health.show-details=always spring.cloud.config.discovery.enabled=true spring.cloud.config.discovery.service-id=easy-config #设为true,如果无法连接config server,启动时会抛异常,并停止服务 spring.cloud.config.fail-fast=true
3.测试
启动Consu
启动easy-config
浏览器访问 http://localhost:8091/easy-api/dev
返回结果
{ "name": "easy-api", "profiles": [ "dev" ], "label": null, "version": null, "state": null, "propertySources": [ { "name": "classpath:/config/easy-api-dev.properties", "source": { "spring.datasource.url": "jdbc:mysql://localhost:3306/db?serverTimezone=Asia/Shanghai&zeroDateTimeBehavior=convertToNull&allowPublicKeyRetrieval=true", "spring.datasource.username": "root", "spring.datasource.password": "root", "spring.datasource.driver-class-name": "com.mysql.cj.jdbc.Driver" } } ] }
启动easy-api
以前的数据查询可以正常访问
完成
说明:
如果出现Connect Timeout Exception on Url - http://localhost:8888. Will be trying the next url if available
无论在 Config Server 中配置什么端口,Config Client 启动时,会去访问都默认的 8888 端口
出现这种情况可以删掉以前的配置文件
在resources文件夹下,新建 bootstrap.properties 文件( bootstrap.yml)
为什么会这样呢?application.properties(application.yml)同bootstrap.properties(bootstrap.yml)的区别是什么呢?查看
原文地址:https://www.cnblogs.com/baby123/p/11954919.html