Spring Framework Developerコースの将来の学生と全員を、「クラウドの概要、Mongo DBAtlas018でクラスターを作成する」というトピックに関するオープンオンラインレッスンに招待します。参加者は、専門の教師と一緒に、クラウドの種類について話し、プロジェクト用に無料のMongoDBクラスターをセットアップします。
そして今、私たちはあなたと記事の伝統的な翻訳を共有しています。
この記事では、Javaマイクロサービスのサービス検出をインストールして構成する方法について説明します。
Eurekaサーバーとは何ですか?
Eureka Serverは、マイクロサービスのサービス検出です。クライアントアプリケーションは自己登録でき、他のマイクロサービスはEurekaサーバーにアクセスして必要なマイクロサービスを見つけることができます。
Eureka Server Discovery Server IP- .
Eureka Server pom.xml
.
<dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId> </dependency>
Eureka Server
https://start.spring.io . , Group, Artifact, / . "Generate Project" zip-. IDE Maven-.
Eureka Server
Web
Actuator
, pom.xml
:
<?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">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.7.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example.eureka.server</groupId>
<artifactId>eureka-server</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>eureka-server</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
<spring-cloud.version>Finchley.SR2</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</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>
</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>
EurekaServerApplication.java
@EnableEurekaServer
, .
package com.example.eureka.server.eurekaserver;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
@SpringBootApplication
@EnableEurekaServer
public class EurekaServerApplication {
public static void main(String[] args) {
SpringApplication.run(EurekaServerApplication.class, args);
}
}
application.properties
, src/main/resources
, .
spring.application.name=eureka-server
server.port=8761
eureka.client.register-with-eureka=false
eureka.client.fetch-registry=false
spring.application.name
— .
server.port
— , , (8761).
eureka.client.register-with-eureka
— , Eureka Server.
eureka.client.fetch-registry
— .
Eureka Java- http://localhost:8761/
, Eureka Server , .
Eureka Server
https://start.spring.io . , Group, Artifact, / . "Generate Project" zip-. IDE Maven-.
DevTools
Actuator
Discovery Client
, pom.xml
:
<?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">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.7.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example.eureka.client</groupId>
<artifactId>EurekaClientApplication</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>EurekaClientApplication</name>
<description>Demo project for Spring Boot</description>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<spring-cloud.version>Finchley.SR2</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</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>
EurekaClientApplication.java
@EnableDiscoveryClient
, .
package com.example.eureka.client.application;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
@SpringBootApplication
@EnableDiscoveryClient
public class EurekaClientApplication {
public static void main(String[] args) {
SpringApplication.run(EurekaClientApplication.class, args);
}
}
REST-
HelloWorldController
com.example.eureka.client.application
GET- .
package com.example.eureka.client.application;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class HelloWorldController {
@GetMapping("/hello-worlds/{name}")
public String getHelloWorld(@PathVariable String name) {
return "Hello World " + name;
}
}
application.properties
, src/main/resources, .
spring.application.name=eureka-client-service
server.port=8081
eureka.client.service-url.defaultZone=http://localhost:8761/eureka/
eureka.client.service-url.defaultZone
Eureka Server, .
, Eureka Server . Java- Eureka Server http://localhost:8761/. , Eureka Server.
Eureka Server . (Distributed Tracing) Spring Boot-.
« Spring Framework».
- « , Mongo DB Atlas018».