package com.roboslyq.springcloudconfigserver;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.config.server.EnableConfigServer;
@SpringBootApplication
@EnableConfigServer
public class SpringCloudConfigServerApplication {
	public static void main(String[] args) {
		SpringApplication.run(SpringCloudConfigServerApplication.class, args);
	}
}

package com.roboslyq.springcloudconfigclient;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.core.env.Environment;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@SpringBootApplication
@RestController
public class SpringCloudConfigClientApplication {
    //配置中心配置的变量名称
	@Value("${roboslyq.user.name}")
	private String userName;
	//从env中获取配置参数，可以实现参数动态更新
	@Autowired
	Environment environment;
	//模拟获取用户信息，返回一个字符串。
    //@valueName不能实现动态更新，需要重启服务器。environment.getProperty可以实现动态更新。
	@RequestMapping("/getUser")
	public String user() {
        String realTimeUserName = environment.getProperty("roboslyq.user.name");
		return "@valueName = "+userName+"<br/> envName = "+ realTimeUserName ;
	}
	public static void main(String[] args) {
		SpringApplication.run(SpringCloudConfigClientApplication.class, args);
	}
}

package org.springframework.cloud.endpoint;
import java.util.Collection;
import java.util.Set;
import org.springframework.boot.actuate.endpoint.annotation.Endpoint;
import org.springframework.boot.actuate.endpoint.annotation.WriteOperation;
import org.springframework.cloud.context.refresh.ContextRefresher;
/**
 * @author Dave Syer
 * @author Venil Noronha
 */
@Endpoint(id = "refresh")
public class RefreshEndpoint {
    //刷新器
	private ContextRefresher contextRefresher;
    //构造器注入刷新器
	public RefreshEndpoint(ContextRefresher contextRefresher) {
		this.contextRefresher = contextRefresher;
	}
	@WriteOperation
	public Collection<String> refresh() {
        //执行刷新操作
		Set<String> keys = contextRefresher.refresh();
		return keys;
	}
}

package com.roboslyq.springcloudconfigclient;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.context.refresh.ContextRefresher;
import org.springframework.core.env.Environment;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.Set;
@SpringBootApplication
//开启定时任务
@EnableScheduling
@RestController
public class SpringCloudConfigClientApplication {
    //注入刷新器
	@Autowired
	private ContextRefresher contextRefresher;

	private int count = 0;
	//每100ms执行一次刷新
	@Scheduled(fixedRate = 100)
	private void refreshedConfig(){
		System.out.println("第" + count++ +"次更新配置");
        //刷新配置
		Set<String> keys = contextRefresher.refresh();
		System.out.println(keys.toString());
	}
	@Value("${roboslyq.user.name}")
	private String userName;

	@Autowired
	Environment environment;

	@RequestMapping("/getUser")
	public String user() {
        String realTimeUserName = environment.getProperty("roboslyq.user.name");
		return "@valueName = "+userName+"<br/> envName = "+ realTimeUserName ;
	}
	public static void main(String[] args) {
		SpringApplication.run(SpringCloudConfigClientApplication.class, args);
	}

}