Eureka搭建服務註冊中心
給大家推薦個手冊:springcloud中文手冊
本章講解內容:
- 搭建一個Eureka服務中心
將一個簡單的springboot項目註冊到Eureka服務器
一、搭建項目
- 用自己的IDE工具搭建一個springboot腳手架工程
- 修改pom文件,添加springcloud和Eureka的依賴,代碼如下:
<?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>
<groupId>com.springcloud</groupId>
<artifactId>Eureka-server</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>Eureka-server</name>
<description>eureka-server project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.9.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<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>Dalston.SR1</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- eureka版本依賴 -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka-server</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<!-- spring-cloud版本依賴 -->
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
- 修改啓動類,添加註解@EnableEurekaServer(啓動此爲一個服務註冊中心提供給其它應用進行對話)
/**
* 通過@EnableEurekaServer開啓此端爲服務註冊中心
*/
@SpringBootApplication
@EnableEurekaServer
public class EurekaApplication {
public static void main(String[] args) {
SpringApplication.run(EurekaApplication.class, args);
}
}
- 修改配置文件(application.yml或者application.properties),下面代碼是yml格式的,properties自行修改:
#配置端口
server:
port: 8761
#配置爲Eureka的服務端-服務註冊中心
eureka:
instance:
hostname: Eureka-server
client:
#因爲自己是註冊中心,設置爲false,表示不向註冊中心註冊自己
register-with-eureka: false
#因爲自己是註冊中心,設置爲false,表示不需要去檢索服務
fetch-registry: false
#Eureka客戶端將要註冊的註冊中心的地址
serviceUrl:
defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/
- 編譯運行項目即可,在瀏覽器輸入: http://localhost:8761 出現Eureka信息面板
到此,Eureka註冊中心就搭建完成了!
二、將自己的springboot項目註冊到Eureka註冊中心
1. 添加pom依賴
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.springcloud</groupId>
<artifactId>uereka-client-one</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>uereka-client-one</name>
<description>uereka-client-one project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.9.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<spring-cloud.version>Dalston.SR1</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- springcloud-eureka-client依賴 -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${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>
<repositories>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
</project>
- 通過註解@EnableEurekaClient開啓註冊功能,激活Eureka的DiscoveryClient實現,具體代碼如下:
/**
* 使用註解@EnableEurekaClient開啓註冊功能,激活Eureka的DiscoveryClient實現
* @author : tjw
* @date : 2018/3/25
*/
@SpringBootApplication
@EnableEurekaClient
public class UerekaClientOneApplication {
public static void main(String[] args) {
SpringApplication.run(UerekaClientOneApplication.class, args);
}
}
- 修改application.yml文件
# 配置註冊到註冊中心的服務名稱
spring:
application:
name: uereka-clent-one
# 配置服務註冊中心的地址
eureka:
client:
serviceUrl:
defaultZone: http://localhost:8761/eureka/
啓動項目:啓動順序,先啓動Eureka註冊中心,在啓動自己的項目。
訪問:http://localhost:8761/,比較可以看到
到此結束,如果覺得又不懂的可以問我,看到會及時回覆的。
今後會繼續更新springcloud相關的文章,大家可以一起學習。