Spring Cloud Bus消息总线+rabbitmq+Gradle【Greenwich.RELEASE版本】
准备工作
环境以及版本:
tools | vision |
---|---|
IDEA | 2018.3 |
SpringBoot | 2.1.3 RELEASE |
Gradle | 5.2.1+ |
JDK | 1.8 |
Spring Cloud | Greenwich.RELEASE |
说明
以下改造均在子项目进行操作,父项目的github地址,下述需下载父项目用来管理公共依赖:
https://github.com/cuifuan/springcloud-tools
1.改造你的 config-server
1.1 构建配置文件 build.gradle
dependencies {
implementation "org.springframework.cloud:spring-cloud-config-server"
implementation "org.springframework.cloud:spring-cloud-bus"
implementation "org.springframework.cloud:spring-cloud-starter-bus-amqp"
}
1.2 配置文件 application.yml
server:
port: 7001
spring:
application:
name: config-server
cloud:
config:
server:
git:
uri: git地址 #例如https://github.com/cuifuan/springcloud-configuration.git
search-paths: 仓库文件下文件夹
default-label: master
username: git账号
password: git密码
bus:
trace:
enabled: true
rabbitmq:
host: rabbitmq地址
port: 5672
username: rabbit账号【默认:guest】
password: rabbit密码【默认:guest】
virtual-host: /
eureka:
# 修改在服务中心的地址status为 ip+端口 【例如:10.0.0.100:88】
instance:
prefer-ip-address: true
instance-id: ${spring.cloud.client.ip-address}:${server.port}
client:
serviceUrl:
defaultZone: http://springcloud-tools:8761/eureka/
info:
app:
description: This is Spring Cloud remote Registration center.
name: tools-config-server
version: 0.0
management:
endpoint:
bus-refresh:
enabled: true
endpoints:
web:
exposure:
include: refresh,bus-refresh
1.3 启动类 ToolsConfigServerAppliaction.java
package store.zabbix.config;
import org.springframework.boot.SpringApplication;
import org.springframework.cloud.client.SpringCloudApplication;
import org.springframework.cloud.config.server.EnableConfigServer;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@EnableConfigServer
@SpringCloudApplication
@RestController
public class ToolsConfigServerAppliaction {
public static void main(String[] args) {
SpringApplication.run(ToolsConfigServerAppliaction.class, args);
}
@RequestMapping("/")
public String home() {
return "Hello World! My name is configserver.";
}
}
2. 改造你的 config-client (客户端)
用来读取配置文件的
2.1 构建配置文件 build.gradle
dependencies {
implementation 'org.springframework.cloud:spring-cloud-starter-config'
implementation "org.springframework.cloud:spring-cloud-bus"
implementation "org.springframework.cloud:spring-cloud-starter-bus-amqp"
}
2.2 配置文件 bootstrap.yml
spring:
cloud:
config:
name: tools-config-client #对应{application}部分
profile: dev #对应{profile}部分
#uri: http://localhost:8888/ #配置中心的具体地址
label: master #对应git的分支。如果配置中心使用的是本地存储,则该参数无用
discovery:
enabled: true #开启Config服务发现支持
service-id: config-server #指定配置中心的service-id,便于扩展为高可用配置集群。
eureka:
instance:
prefer-ip-address: true
instance-id: ${spring.cloud.client.ip-address}:${server.port}
client:
service-url:
defaultZone: http://springcloud-tools:8761/eureka/
2.2 配置文件 application.yml
server:
port: 7003
spring:
application:
name: tools-config-client
cloud:
config:
#配置重试机制
retry:
initial-interval: 2000
max-attempts: 2000
max-interval: 2000
multiplier: 1.2
fail-fast: true
bus:
#动态刷新配置
refresh:
enabled: true
#跟踪总线事件
trace:
enabled: true
rabbitmq:
host: rabbitmq地址
port: 5672
username: rabbit账号【默认:guest】
password: rabbit密码【默认:guest】
#配置actuator
# 1.X版本的springboot 配置: management.security.enabled=false 已经作废
#关闭安全认证
management:
endpoint:
bus-refresh:
enabled: true
#refresh接入点显式暴露出来
endpoints:
web:
exposure:
include: refresh,bus-refresh
2.3 启动类 ConfigClientApplication.java
注意:一定不要忘了加
@RefreshScop
注解
package store.zabbix.configreader;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.context.config.annotation.RefreshScope;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
@SpringBootApplication
@RestController
@RefreshScope
@EnableDiscoveryClient
public class ConfigClientApplication {
/** * http://localhost:8881/actuator/bus-refresh */
public static void main(String[] args) {
SpringApplication.run(ConfigClientApplication.class, args);
}
@Value("${message}")
String message;
@GetMapping("/hello")
public String getMessage(){
return message;
}
}
3.远程配置文件
4.操作流程
- 1 启动config-server
- 2 启动config-client
- 3 访问http://127.0.0.1:7003/hello
- 4 之后更改远程仓库配置文件,提交
- 5 访问http://127.0.0.1:7003/hello发现无变化
- 6 用postman做post请求http://10.0.0.82:7001/actuator/bus-refresh
或者用
curl -X POST http://10.0.0.82:7001/actuator/bus-refresh
这个时候的读取的配置文件已发生变化
5.需要注意的坑
- 请确定你的rabbitmq是通的,guest账户无法通过远程ip访问
- 注意上面的ip地址,我是这边测试使用,请更改成个人正确或者本地
- springboot2.x之后bus刷新地址更改为
/actuator/bus-refresh
- springboot和springcloud版本要一致,其他版本没试过