5.整合环境公共依赖

spring boot 2.2+

springcloud Hoxton+

springcloud alibaba 2.2.1+

# 00.整合思路分析
- springcloud                  eureka consul ribbon openfeign hystix config+bus gateway
- springcloudalibaba    nacos服务注册中&统一配置中心   sentinel 服务熔断 限流 ...
整合思路:
    1.服务注册中心      nacos
    2.统一配置中心      nacos
    3.服务熔断组件      sentinel
    4.服务间通信组件  openfeign + ribbon 
    5.服务网关组件    gateway
# 0.构建项目并引入依赖

 <!--继承springboot父项目-->
<parent>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-parent</artifactId>
  <version>2.2.5.RELEASE</version>
</parent>

<properties>
  <java.version>1.8</java.version>
  <spring-cloud.version>Hoxton.SR6</spring-cloud.version>
  <spring.cloud.alibaba.version>2.2.1.RELEASE</spring.cloud.alibaba.version>
</properties>

<dependencyManagement>
  <dependencies>
    <!--引入springcloud alibaba-->
    <dependency>
      <groupId>com.alibaba.cloud</groupId>
      <artifactId>spring-cloud-alibaba-dependencies</artifactId>
      <version>${spring.cloud.alibaba.version}</version>
      <type>pom</type>
      <scope>import</scope>
    </dependency>
    <!--引入springcloud-->
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-dependencies</artifactId>
      <version>${spring-cloud.version}</version>
      <type>pom</type>
      <scope>import</scope>
    </dependency>
  </dependencies>
</dependencyManagement>