文章目录
代码地址： github-spring-cloud地址
SpringCloud简介
spring cloud 为开发人员提供了快速构建分布式系统的一些工具，包括配置管理、服务发现、断路器、路由、微代理、事件总线、全局锁、决策竞选、分布式会话等等。它运行环境简单，可以在开发人员的电脑上跑。另外spring cloud是基于springboot的，所以需要开发中对springboot有一定的了解。
本章SpringCloud版本是Finchley.RELEASE
SpringBoot版本为2.1.10.RELEASE
创建注册中心(基于Eureka)
创建maven工程
创建maven主工程spring-cloud-learn，引入pom文件
<?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.sl.learn.cloud</groupId>
<artifactId>spring-cloud-learn</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>pom</packaging>
<modules>
<module>eureka-server</module>
<module>eureka-hello</module>
</modules>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.10.RELEASE</version>
<relativePath/>
</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>Finchley.RELEASE</spring-cloud.version>
<project.version>1.0-SNAPSHOT</project.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.sl.cloud.learn</groupId>
<artifactId>eureka-server</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>com.sl.cloud.learn</groupId>
<artifactId>eureka-hello</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
创建maven子工程
创建maven子工程一个是作为注册中心eureka-server，一个作为客户端eureka-client
eureka-server服务端pom文件
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.sl.cloud.learn</groupId>
<artifactId>eureka-server</artifactId>
<version>1.0-SNAPSHOT</version>
<name>eureka-server</name>
<description>eureka-server</description>
<parent>
<groupId>com.sl.learn.cloud</groupId>
<artifactId>spring-cloud-learn</artifactId>
<version>1.0-SNAPSHOT</version>
<relativePath>..</relativePath>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
</dependency>
</dependencies>
</project>
eureka-server服务端配置文件
server:
port: 8080
spring:
application:
name: eureka-server
eureka:
instance:
hostname: localhost
client:
registerWithEureka: false
fetchRegistry: false
serviceUrl:
defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/
eureka-server服务端启动类
package com.sl.cloud.learn.server;
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);
}
}
eureka-client客户端pom文件
<?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>spring-cloud-learn</artifactId>
<groupId>com.sl.learn.cloud</groupId>
<version>1.0-SNAPSHOT</version>
<relativePath>..</relativePath>
</parent>
<modelVersion>4.0.0</modelVersion>
<groupId>com.sl.learn.cloud</groupId>
<artifactId>eureka-hello</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
<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>
</dependencies>
</project>
eureka-client客户端配置文件
server:
port: 8081
spring:
application:
name: eureka-hello
info:
app:
name: spring-boot-actuator
version: 1.0.0
test: test
eureka:
client:
serviceUrl:
defaultZone: http://localhost:8080/eureka/
management:
endpoints:
web:
exposure:
include: '*'
endpoint:
health:
show-details: always
shutdown:
enabled: true
eureka-client客户端启动类
package com.sl.cloud.learn.client;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
@SpringBootApplication
@EnableEurekaClient
public class EurekaClientApplication {
public static void main(String[] args) {
SpringApplication.run(EurekaClientApplication.class, args);
}
}
启动服务端和客户端
启动eureka-server访问地址：http://localhost:8080/ 可以看到如下图
启动eureka-hello 可以看到如下图说明客户端已经注册到eureka
