SpringBoot2.0x+SpringCloud Bus+RabbitMQ实现实时刷新配置
实现环境：springboot2.2.5，springcloud Finchley.SR1，RabbitMQ 3.7.5,Erlang20.3，码云Gitee
此例已经搭建好Eureka服务端
一、搭建服务端config-server
pom.xml如下：
org.springframework.cloud
spring-cloud-config-server
org.springframework.boot
spring-boot-starter-test
test
org.junit.vintage
junit-vintage-engine
org.springframework.cloud
spring-cloud-starter-netflix-eureka-client
org.springframework.cloud
spring-cloud-starter-bus-amqp
org.springframework.cloud
spring-cloud-bus
org.springframework.cloud
spring-cloud-starter-stream-rabbit
org.springframework.boot
spring-boot-starter-actuator
实现需要的是：spring-cloud-config-server,spring-cloud-starter-bus-amqp，spring-cloud-bus，spring-cloud-starter-stream-rabbit，spring-boot-starter-actuator 5个依赖
application.properties配置：
#访问端口
server.port=8086
#配置文件地址
spring.cloud.config.server.git.uri= 你的配置文件url
spring.cloud.config.server.git.username=******
spring.cloud.config.server.git.password=******
spring.cloud.config.server.git.search-paths= /**
#指定分支
spring.cloud.config.label=master
#spring cloud bus 刷新配置
spring.cloud.bus.trace.enabled=true
#eureka
eureka.client.service-url.defaultZone=http://192.168.13.118:8081/eureka
eureka.client.fetch-registry=true
eureka.client.register-with-eureka=true
# Rabbitmq配置
spring.rabbitmq.host=localhost
spring.rabbitmq.port=5672
spring.rabbitmq.username=admin
spring.rabbitmq.password=admin
#暴露刷新接口
management.endpoints.web.exposure.include=bus-refresh启动类：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 CsApplication {
public static void main(String[] args) {
SpringApplication.run(CsApplication.class, args);
}
}先启动Eureka服务，以及RabbitMQ服务端然后启动项目，访问http://localhost:8086/+你的文件名，如：http://localhost:8086/order-dev.properties可的到内容
二、客户端
pom.xml
org.springframework.boot
spring-boot-starter-web
org.springframework.cloud
spring-cloud-starter-netflix-eureka-client
org.springframework.boot
spring-boot-starter-test
test
org.junit.vintage
junit-vintage-engine
org.springframework.cloud
spring-cloud-starter-bus-amqp
org.springframework.cloud
spring-cloud-bus
org.springframework.cloud
spring-cloud-starter-stream-rabbit
org.springframework.cloud
spring-cloud-starter-config
实现需要的是：spring-cloud-starter-bus-amqp，spring-cloud-bus，spring-cloud-starter-stream-rabbit，spring-boot-starter-actuator 4个依赖
bootstrap.properties配置：
#分支名
spring.cloud.config.label=master
#环境
spring.cloud.config.profile=dev
#config-server的路径
spring.cloud.config.uri=http://localhost:8086
#暴露刷新接口
management.endpoints.web.exposure.include= bus-refresh启动类：import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
@SpringBootApplication
@EnableEurekaClient//客户端
public class EoApplication {
public static void main(String[] args) {
SpringApplication.run(EoApplication.class, args);
}
}定义一个Controller 如下：import org.springframework.beans.factory.annotation.Value;
import org.springframework.cloud.context.config.annotation.RefreshScope;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
@RefreshScope//刷新配置注解
public class OrderController {
@Value("${env}")//码云上定义的
private String env;
@RequestMapping("/getEvn")
public String getEvn(){
return env;
}
}Gitee
在git上添加webHooks,域名可以上https://natapp.cn自己配置一个
当你以为能成功时git报出了错误
spring boot因为无法正常反序列化这串载荷而报了400错误
在服务端config-server中
1、自定义的wrapper类
import javax.servlet.ReadListener;
import javax.servlet.ServletInputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import java.io.ByteArrayInputStream;
import java.io.IOException;
public class CustometRequestWrapper extends HttpServletRequestWrapper {
public CustometRequestWrapper(HttpServletRequest request) {
super(request);
}
@Override
public ServletInputStream getInputStream() throws IOException {
byte[] bytes = new byte[0];
ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(bytes);
return new ServletInputStream() {
@Override
public boolean isFinished() {
return byteArrayInputStream.read() == -1 ? true:false;
}
@Override
public boolean isReady() {
return false;
}
@Override
public void setReadListener(ReadListener readListener) {
}
@Override
public int read() throws IOException {
return byteArrayInputStream.read();
}
};
}
}2、FilterConfig
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import java.util.ArrayList;
import java.util.List;
@Configuration
public class FilterConfig {
@Bean
public FilterRegistrationBean filterRegistration() {
FilterRegistrationBean registration = new FilterRegistrationBean();
registration.setFilter(new BusRefreshFilter());
List urlList = new ArrayList();
urlList.add("/*");
registration.setUrlPatterns(urlList);
registration.setName("BusRefreshFilter");
registration.setOrder(1);
return registration;
}
} 3、BusRefreshFilter
import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import java.io.IOException;
public class BusRefreshFilter implements Filter {
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
throws IOException, ServletException {
HttpServletRequest httpServletRequest = (HttpServletRequest)request;
String url = new String(httpServletRequest.getRequestURI());
//只过滤/actuator/bus-refresh请求
if (!url.endsWith("/bus-refresh")) {
chain.doFilter(request, response);
return;
}
//使用HttpServletRequest包装原始请求达到修改post请求中body内容的目的
CustometRequestWrapper requestWrapper = new CustometRequestWrapper(httpServletRequest);
chain.doFilter(requestWrapper, response);
}
}此时重新启动服务端。然后再修改配置文件就可以刷新配置了
修改完配置信息后RabbitMQ会出现消息对列
