非集羣實現
1.Eurek 服務器端實現--註冊中心:
pom.xml 包依賴如下:
<properties>
<java.version>1.8</java.version>
<spring-cloud.version>Hoxton.RELEASE</spring-cloud.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</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-server</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>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
application.yml 註冊中心配置
###服務端口號
server:
port: 8100
###eureka 基本信息配置
eureka:
instance:
###註冊到eurekaip地址
hostname: 127.0.0.1
client:
serviceUrl:
defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/
###因爲自己是爲註冊中心,不需要自己註冊自己
register-with-eureka: false
###因爲自己是爲註冊中心,不需要檢索服務
fetch-registry: false
啓動Eureka服務:
@EnableEurekaServer
@SpringBootApplication
public class AppEureka {
public static void main(String[] args) {
SpringApplication.run(AppEureka.class, args);
}
}
註冊服務提供者:
<!-- 管理依賴 -->
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<!-- SpringBoot整合Web組件 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- SpringBoot整合eureka客戶端 -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
</dependencies>
<!-- 注意: 這裏必須要添加, 否者各種依賴有問題 -->
<repositories>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/libs-milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
application.yml 文件配置
###服務啓動端口號
server:
port: 8010
###服務名稱(服務註冊到eureka名稱)
spring:
application:
name: api-node1-member
###服務註冊到eureka地址
eureka:
client:
service-url:
defaultZone: http://localhost:8100/eureka
###因爲該應用爲註冊中心,不會註冊自己
register-with-eureka: true
###是否需要從eureka上獲取註冊信息
fetch-registry: true
服務消費者服務配置
Maven依賴信息
<!-- 管理依賴 -->
<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>
<dependencies>
<!-- SpringBoot整合Web組件 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- SpringBoot整合eureka客戶端 -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
</dependencies>
application.yml 文件配置
###服務啓動端口號
server:
port: 8001
###服務名稱(服務註冊到eureka名稱)
spring:
application:
name: app-node-order
###服務註冊到eureka地址
eureka:
client:
service-url:
defaultZone: http://localhost:8100/eureka
###因爲該應用爲註冊中心,不會註冊自己
register-with-eureka: true
###是否需要從eureka上獲取註冊信息
fetch-registry: true
使用rest方式調用服務
@RestController
public class OrderController {
@Autowired
private RestTemplate restTemplate;
@RequestMapping("/getorder")
public String getOrder() {
// order 使用rpc 遠程調用技術 調用 會員服務
String memberUrl = "http://app-itmayiedu-member/getMember";
String result = restTemplate.getForObject(memberUrl, String.class);
System.out.println("會員服務調用訂單服務,result:" + result);
return result;
}
}
啓動消費者服務
@SpringBootApplication
@EnableEurekaClient
public class AppOrder {
public static void main(String[] args) {
SpringApplication.run(AppOrder.class, args);
}
@Bean
@LoadBalanced
RestTemplate restTemplate() {
return new RestTemplate();
}
}
@LoadBalanced就能讓這個RestTemplate在請求時擁有客戶端負載均衡的能力