SpringCloud的学习记录(1)

最近一段时间重新学习一边SpringCloud，这里简单记录一下。

我用的是IntelliJ IDEA开发工具, SpringBoot的版本是2.1.3.RELEASE。

1. 构建Maven项目

整个的SpringCloud的项目是在Maven项目中的，这个Maven只做容纳其他项目使用, 比如后面Fegin/Config/Zipkin等项目。

用IntelliJ IDEA工具, File->Project->spring Initializr, 然后点击next, 填写Group和Artifact等信息.

比如我填写的GroupId是com.xum, ArtifactId是demo, 然后next, 在这里我们什么也不选择，再次点击next,

最后选择存放位置，然后Finshed.

把生成pom.xml改成如下(因为这个只是做存放项目使用, 还要把这个src文件也删除了)

<?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.xum</groupId><artifactId>demo</artifactId><version>1.0-SNAPSHOT</version></project>

2. 构建Eureka-Server项目

在我们生成的Demo项目上右键点击New->Module->spring Initializr, 然后next, 填写Group和Artifact等信息，

这里Artifact填写eurekaserver, 再次next, 如下图,

选择Web下的web和Cloud Discovery下的Eureka Server.

最后在Module Name中填写eureka-server.

生成的pom.xml文件如下

<?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><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.1.3.RELEASE</version><relativePath/> <!-- lookup parent from repository --></parent><groupId>com.xum</groupId><artifactId>eureka-server</artifactId><version>0.0.1-SNAPSHOT</version><name>eureka-server</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>Greenwich.RELEASE</spring-cloud.version></properties><dependencies><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-actuator</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></repository></repositories></project>

然后在src->main->resources下新建application.yml文件，把其他的都删除, 内容如下

server:port: 8761
eureka:instance:hostname: localhostclient:registerWithEureka: falsefetchRegistry: falseserviceUrl:defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/

最后在EurekaServerApplication 上面添加@EnableEurekaServer这个注解

package com.xum.eurekaserver;import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;@EnableEurekaServer
@SpringBootApplication
public class EurekaServerApplication {public static void main(String[] args) {SpringApplication.run(EurekaServerApplication.class, args);}}