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。