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增加 Eureka 示例

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This commit is contained in:
YunaiV
2020-05-07 23:28:06 +08:00
parent 6de512a764
commit 7e0ecbbcdf
9 changed files with 241 additions and 4 deletions
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6
labx-22/labx-22-scn-eureka-demo01-provider/src/main/resources/application.yaml
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@@ -7,7 +7,7 @@ server:
eureka:
client:
register-with-eureka: true
fetch-registry: true
register-with-eureka: true # 注册到 Eureka-Server，默认为 true
fetch-registry: true # 从 Eureka-Server 获取注册表，默认为 true
service-url:
defaultZone: http://127.0.0.1:8761/eureka/
defaultZone: http://127.0.0.1:8761/eureka/ # Eureka-Server 地址

56
labx-22/labx-22-scn-eureka-demo02-consumer/pom.xml Normal file
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@@ -0,0 +1,56 @@
<?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>
<artifactId>labx-22</artifactId>
<groupId>cn.iocoder.springboot.labs</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>labx-22-scn-eureka-demo02-consumer</artifactId>
<properties>
<spring.boot.version>2.2.4.RELEASE</spring.boot.version>
<spring.cloud.version>Hoxton.SR1</spring.cloud.version>
</properties>
<!--
引入 Spring Boot、Spring Cloud、Spring Cloud Alibaba 三者 BOM 文件，进行依赖版本的管理，防止不兼容。
在 https://dwz.cn/mcLIfNKt 文章中，Spring Cloud Alibaba 开发团队推荐了三者的依赖关系
-->
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>${spring.boot.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring.cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<!-- 引入 SpringMVC 相关依赖，并实现对其的自动配置 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- 引入 Spring Cloud Netflix Eureka Client 相关依赖，将 Eureka 作为注册中心的客户端，并实现对其的自动配置 -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
</dependencies>
</project>

69
labx-22/labx-22-scn-eureka-demo02-consumer/src/main/java/cn/iocoder/springcloudalibaba/labx22/consumerdemo/DemoConsumerApplication.java Normal file
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@@ -0,0 +1,69 @@
package cn.iocoder.springcloudalibaba.labx22.consumerdemo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.cloud.client.loadbalancer.LoadBalancerClient;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
import java.util.List;
@SpringBootApplication
// @EnableDiscoveryClient
public class DemoConsumerApplication {
public static void main(String[] args) {
SpringApplication.run(DemoConsumerApplication.class, args);
}
@Configuration
public class RestTemplateConfiguration {
@Bean
public RestTemplate restTemplate() {
return new RestTemplate();
}
}
@RestController
static class TestController {
@Autowired
private DiscoveryClient discoveryClient;
@Autowired
private RestTemplate restTemplate;
@Autowired
private LoadBalancerClient loadBalancerClient;
@GetMapping("/hello")
public String hello(String name) {
// 获得服务 `demo-provider` 的一个实例
ServiceInstance instance;
if (true) {
// 获取服务 `demo-provider` 对应的实例列表
List<ServiceInstance> instances = discoveryClient.getInstances("demo-provider");
// 选择第一个
instance = instances.size() > 0 ? instances.get(0) : null;
} else {
instance = loadBalancerClient.choose("demo-provider");
}
// 发起调用
if (instance == null) {
throw new IllegalStateException("获取不到实例");
}
String targetUrl = instance.getUri() + "/echo?name=" + name;
String response = restTemplate.getForObject(targetUrl, String.class);
// 返回结果
return "consumer:" + response;
}
}
}

12
labx-22/labx-22-scn-eureka-demo02-consumer/src/main/resources/application.yaml Normal file
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@@ -0,0 +1,12 @@
spring:
application:
name: demo-consumer # Spring 应用名
server:
port: 28080 # 服务器端口。默认为 8080
eureka:
client:
register-with-eureka: true # 注册到 Eureka-Server，默认为 true
fetch-registry: true # 从 Eureka-Server 获取注册表，默认为 true
service-url:
defaultZone: http://eureka-node01:18761/eureka/, http://eureka-node02:28761/eureka/

56
labx-22/labx-22-scn-eureka-demo02-provider/pom.xml Normal file
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@@ -0,0 +1,56 @@
<?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>
<artifactId>labx-22</artifactId>
<groupId>cn.iocoder.springboot.labs</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>labx-22-scn-eureka-demo02-provider</artifactId>
<properties>
<spring.boot.version>2.2.4.RELEASE</spring.boot.version>
<spring.cloud.version>Hoxton.SR1</spring.cloud.version>
</properties>
<!--
引入 Spring Boot、Spring Cloud、Spring Cloud Alibaba 三者 BOM 文件，进行依赖版本的管理，防止不兼容。
在 https://dwz.cn/mcLIfNKt 文章中，Spring Cloud Alibaba 开发团队推荐了三者的依赖关系
-->
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>${spring.boot.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring.cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<!-- 引入 SpringMVC 相关依赖，并实现对其的自动配置 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- 引入 Spring Cloud Netflix Eureka Client 相关依赖，将 Eureka 作为注册中心的客户端，并实现对其的自动配置 -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
</dependencies>
</project>

27
labx-22/labx-22-scn-eureka-demo02-provider/src/main/java/cn/iocoder/springcloudalibaba/labx22/providerdemo/DemoProviderApplication.java Normal file
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@@ -0,0 +1,27 @@
package cn.iocoder.springcloudalibaba.labx22.providerdemo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
@SpringBootApplication
@EnableDiscoveryClient
public class DemoProviderApplication {
public static void main(String[] args) {
SpringApplication.run(DemoProviderApplication.class, args);
}
@RestController
static class TestController {
@GetMapping("/echo")
public String echo(String name) {
return "provider:" + name;
}
}
}

13
labx-22/labx-22-scn-eureka-demo02-provider/src/main/resources/application.yaml Normal file
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@@ -0,0 +1,13 @@
spring:
application:
name: demo-provider # Spring 应用名
server:
port: 18080 # 服务器端口。默认为 8080
eureka:
client:
register-with-eureka: true # 注册到 Eureka-Server，默认为 true
fetch-registry: true # 从 Eureka-Server 获取注册表，默认为 true
service-url:
defaultZone: http://eureka-node01:18761/eureka/, http://eureka-node02:28761/eureka/

2
labx-22/labx-22-scn-eureka-server-cluster/src/main/resources/application-node02.yaml
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@@ -12,4 +12,4 @@ eureka:
register-with-eureka: true
fetch-registry: true
service-url:
defaultZone: http://eureka-node01:28761/eureka/
defaultZone: http://eureka-node01:18761/eureka/

4
labx-22/pom.xml
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@@ -15,7 +15,11 @@
<module>labx-22-scn-eureka-server-standalone</module>
<module>labx-22-scn-eureka-demo01-provider</module>
<module>labx-22-scn-eureka-demo01-consumer</module>
<module>labx-22-scn-eureka-server-cluster</module>
<module>labx-22-scn-eureka-demo02-provider</module>
<module>labx-22-scn-eureka-demo02-consumer</module>
</modules>