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1. 学习之前要知道的

2. springboot 和 springcloud 的版本选型

官网介绍：https://spring.io/projects/spring-cloud/#overview

生成新的Spring Cloud项目
最简单的入门方法是访问start.spring.io，选择您的Spring Boot版本和要使用的Spring Cloud项目。生成项目时，这会将相应的Spring Cloud BOM版本添加到您的Maven / Gradle文件中。

将Spring Cloud添加到现有的Spring Boot应用程序
如果您现有的Spring Boot应用程序想要将Spring Cloud添加到该应用程序，则第一步是确定您应该使用的Spring Cloud版本。您在应用中使用的版本将取决于您使用的Spring Boot的版本

本文将使用 springboot 2.3.0.RELEASE 和 springcloud Hoxton.SR11 构建 springcloud 项目

更详细的介绍参考： https://start.spring.io/actuator/info

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}

3. 步骤

（1）建 module
（2）改 pom
（3）写 yml
（4）主启动类
（5）业务代码

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 https://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>com.test.wl</groupId><artifactId>springcloud</artifactId><version>0.0.1-SNAPSHOT</version><packaging>pom</packaging><modules><module>cloud-provider-payment8001</module></modules><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.3.0.RELEASE</version></parent><!-- 统一jar包管理 --><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><maven.compiler.source>1.8</maven.compiler.source><maven.compiler.traget>1.8</maven.compiler.traget><junit.version>4.12</junit.version><log4j.version>1.2.17</log4j.version><lombok.version>1.18.12</lombok.version><mysql.version>8.0.23</mysql.version><druid.verison>1.1.22</druid.verison><mybatis.spring.boot.version>2.1.4</mybatis.spring.boot.version><spring.boot.starter.web>2.3.0.RELEASE</spring.boot.starter.web><spring.boot.starter.jdbc>2.3.0.RELEASE</spring.boot.starter.jdbc><spring.boot.starter.actuator>2.3.0.RELEASE</spring.boot.starter.actuator><spring.boot.starter.test>2.3.0.RELEASE</spring.boot.starter.test><spring.boot.devtools>2.3.0.RELEASE</spring.boot.devtools></properties><dependencyManagement><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-dependencies</artifactId><version>2.3.0.RELEASE</version></dependency><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-dependencies</artifactId><version>Hoxton.SR11</version><type>pom</type><scope>import</scope></dependency><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-alibaba-dependencies</artifactId><version>2.2.1.RELEASE</version><type>pom</type><scope>import</scope></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-jdbc</artifactId><version>${spring.boot.starter.jdbc}</version></dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>${mysql.version}</version></dependency><dependency><groupId>com.alibaba</groupId><artifactId>druid</artifactId><version>${druid.verison}</version></dependency><dependency><groupId>org.mybatis.spring.boot</groupId><artifactId>mybatis-spring-boot-starter</artifactId><version>${mybatis.spring.boot.version}</version></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><version>${lombok.version}</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId><version>${spring.boot.starter.web}</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-actuator</artifactId><version>${spring.boot.starter.actuator}</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><version>${spring.boot.starter.test}</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-devtools</artifactId><version>${spring.boot.devtools}</version><scope>runtime</scope><optional>true</optional></dependency></dependencies></dependencyManagement><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><version>2.3.0.RELEASE</version><configuration><fork>true</fork><addResources>true</addResources></configuration></plugin></plugins></build>
</project>

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跟尚硅谷大佬（阳哥）一起学 springcloud
视频链接：https://www.bilibili.com/video/BV18E411x7eT?from=search&seid=11397380345672811627
我的项目地址：https://gitee.com/wl_projects/springcloud.git