很多朋友只知道spring cloud config可以刷新远程git的配置到内存中，
却不知道spring cloud config的客户端可以脱离服务端使用，
更不知道spring cloud config客户端结合actuator还可以刷新本地的配置文件到内存中
主类如下：
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.context.config.annotation.RefreshScope;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@SpringBootApplication
@RestController
@RefreshScope
public class FirstDemoApplication
{
public static void main(String[] args)
{
SpringApplication.run(FirstDemoApplication.class, args);
}
private static int port;
@Value("${server.port}")
public void setPort(int port){
this.port=port;
}
@RequestMapping("/port")
public int port(){
return port;
}
}
application.properties如下：
server.port=801 management.security.enabled=false
pom.xml如下：
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.4.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<modelVersion>4.0.0</modelVersion>
<groupId>com.duke</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>firstDemo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-config</artifactId>
</dependency>
<!--监控+refresh配置-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Dalston.SR1</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<!--拷贝依赖jar包-->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<executions>
<execution>
<id>copy-dependencies</id>
<phase>package</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<outputDirectory>${project.build.directory}/tmp/${project.artifactId}/lib</outputDirectory>
</configuration>
</execution>
</executions>
</plugin>
<!--拷贝资源文件-->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<executions>
<!--拷贝resources-->
<execution>
<id>copy-resources</id>
<phase>package</phase>
<goals>
<goal>copy-resources</goal>
</goals>
<configuration>
<resources>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
</includes>
</resource>
</resources>
<outputDirectory>${project.build.directory}/tmp/${project.artifactId}/config
</outputDirectory>
</configuration>
</execution>
</executions>
</plugin>
<!--打包jar-->
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<configuration>
<archive>
<manifest>
<addClasspath>true</addClasspath>
<!--MANIFEST.MF中Class-Path 加入前缀-->
<classpathPrefix>lib/</classpathPrefix>
<!--jar包不包含唯一版本标识-->
<useUniqueVersions>false</useUniqueVersions>
<!--指定入口类-->
<mainClass>com.zte.demo.FirstDemoApplication</mainClass>
</manifest>
</archive>
<!--不打包资源文件-->
<excludes>
<exclude>*.properties</exclude>
<exclude>logback.xml</exclude>
</excludes>
<outputDirectory>${project.build.directory}/tmp/${project.artifactId}</outputDirectory>
</configuration>
</plugin>
</plugins>
</build>
</project>
测试
1、启动项目，访问 http://localhost/port 显示 801
2、修改classpath（注意是classpath，即你编译后的class文件所处的目录）下的application.properties将server.port改为80（这里config配置文件在外边，可以直接修改）
3、发送空post（注意是post）请求到 http://localhost:80/refresh
4、再次访问 http://localhost/port 显示 801 测试成功
原文：https://www.cnblogs.com/share-duke/p/12191068.html