spring cloud 搭建（服务）

创建服务：（我们创建2个服务，service1和service2。操作是一样的）

选择Spring Initializr模板

选择Spring Cloud Discovery-->Eureka Discovery Client

pom文件（注意增加 spring-cloud-config-client ）用来监听配置中心

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.5.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.test</groupId>
    <artifactId>service1</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>service1</name>
    <description>Demo project for Spring Boot</description>
 
    <properties>
        <java.version>1.8</java.version>
        <spring-cloud.version>Hoxton.SR3</spring-cloud.version>
    </properties>
 
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--    配置中心的客户端    -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-config-client</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-commons</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>
 
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
 
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
 
</project>

添加服务注解：@EnableEurekaClient

接着，我们创建一个controller文件夹，

并且创建TestController类

（service2也一样）

@RestController
@RequestMapping("test")
public class TestController {
    @Value("${isDebug}")
    private String isDebug;
 
    @GetMapping(value = "/hello")
    public String hello(){
        return isDebug;
    }
}

application.yml

server:
  port: 9040
 
spring:
  application:
    name: service1
 
eureka:
  client:
    service-url:
      defaultZone: ${registry.url}
  instance:
    lease-expiration-duration-in-seconds: 60
    lease-renewal-interval-in-seconds: 30
    preferIpAddress: true
    instanceId: ${spring.cloud.client.ip-address}:${server.port}

bootstrap.yml（service2服务，我们选择prod作为配置文件）

spring:
  http:
    encoding:
      charset: UTF-8
      enabled: true
      force: true
  cloud:
    config:
      uri: http://${host:localhost}:9020
      name: config
      profile: ${active:dev}
      # service2 我们采用prod的配置文件
      # profile: ${active:prod}

然后，我们按照顺序启动。

1 注册中心，配置中心

2 service1，service2

eureka

我们看到，配置中心和服务都注册了。

我们访问服务

由于service1访问的是dev，

service2访问的是prod，

所以他们显示的信息不一样，这说明我们切换配置文件成功了。

原文地址：https://www.cnblogs.com/hanjun0612/p/12575858.html