一、SpringCloud基本知识

• SpringCloud基于HTTP协议，和Dubbo最本质的区别（dubbo的核心是基于RPC）

• 注册中心：Eureka

• 客户端负载均衡：Ribbon

• 声明式远程方法调用：Feign

• 服务降级，熔断：Hystrix

• 网关：Zuul

1.springboot和springcloud的关系

• SpringBoot是基础
• SpringCloud要基于SpringBoot开发

2.springboot和dubbo对比

• 核心：

• • Dubbo 底层基于RPC
  • SpringCloud底层基于RestFul，也可以说是基于Http。

• 其他区别：

• • SpringCloud相对于Dubbo功能更加全面
  • SpringCloud是一个一站式的解决方案
• • SpringCloud能够天然的基于Spring全家桶开发

二、SpringCloud 目标基础测试环境

1. 创建父工程

• pro01_spring_cloud_parent

• 父工程很重要，里面定义了boot 和 cloud的版本信息

• 配置依赖管理：

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
    <junit.version>4.12</junit.version>
    <lombok.version>1.18.20</lombok.version>
    <log4j.version>1.2.17</log4j.version>
    <mysql.version>8.0.28</mysql.version>
    <druid.version>1.2.8</druid.version>
    <mybatis.spring.boot.version>3.5.0</mybatis.spring.boot.version>
  </properties>




  <!--子模块继承之后，提供作用：锁定版本+子module不用谢groupId和version-->
  <dependencyManagement>
  <dependencies>
<!--  <dependency>-->
<!--    <groupId>org.apache.maven.plugins</groupId>-->
<!--    <artifactId>maven-project-info-reports-plugin</artifactId>-->
<!--    <version>3.0.0</version>-->
<!--  </dependency>-->


  <!--spring boot 2.2.2-->
  <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-dependencies</artifactId>
    <version>2.2.2.RELEASE</version>
    <type>pom</type>
    <scope>import</scope>
  </dependency>
  <!--spring cloud Hoxton.SR1-->
  <dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-dependencies</artifactId>
    <version>Hoxton.SR1</version>
    <type>pom</type>
    <scope>import</scope>
  </dependency>
  <!--spring cloud 阿里巴巴-->
  <dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-alibaba-dependencies</artifactId>
    <version>2.1.0.RELEASE</version>
    <type>pom</type>
    <scope>import</scope>
  </dependency>

  <!--mysql-->
  <dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>${mysql.version}</version>
    <scope>runtime</scope>
  </dependency>
  <!-- druid-->
  <dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid-spring-boot-starter</artifactId>
    <version>1.2.8</version>
  </dependency>
    <!--mybatis-->
<!--    <dependency>-->
<!--      <groupId>org.mybatis.spring.boot</groupId>-->
<!--      <artifactId>mybatis-spring-boot-starter</artifactId>-->
<!--      <version>${mybatis.spring.boot.version}</version>-->
<!--    </dependency>-->
    <!--mybatis plus -->
    <dependency>
      <groupId>com.baomidou</groupId>
      <artifactId>mybatis-plus-boot-starter</artifactId>
      <version>${mybatis.spring.boot.version}</version>
    </dependency>

    <!--junit-->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>${junit.version}</version>
    </dependency>
    <!--log4j-->
    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>${log4j.version}</version>
    </dependency>
    <dependency>
      <groupId>org.projectlombok</groupId>
      <artifactId>lombok</artifactId>
      <version>${lombok.version}</version>
    </dependency>
  </dependencies>


  </dependencyManagement>




  <build>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.1.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-site-plugin</artifactId>
          <version>3.7.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-project-info-reports-plugin</artifactId>
          <version>3.0.0</version>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>
</project>

2. 创建提供者工程 provider

    <dependencies>
        <dependency>
            <groupId>com.xu.springcloud</groupId>
            <artifactId>cloud-api-commons</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
<!--        监控-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>

<!--        &lt;!&ndash;mybatis&ndash;&gt;-->
<!--        <dependency>-->
<!--            <groupId>org.mybatis.spring.boot</groupId>-->
<!--            <artifactId>mybatis-spring-boot-starter</artifactId>-->
<!--        </dependency>-->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
        </dependency>
        <!-- druid-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
        </dependency>
        <!--mysql-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <!--热部署-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-annotation</artifactId>
            <version>3.5.0</version>
        </dependency>

    </dependencies>

配置文件

server:
  port: 8001

spring:
  application:
    name: cloud-payment-service
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource # 当前数据源操作类型
    driver-class-name: com.mysql.cj.jdbc.Driver  #mysql驱动
    url: jdbc:mysql://localhost:3306/db2022?useSSL=false&serverTimezone=Asia/Shanghai&allowPublicKeyRetrieval=true
    username: root
    password: 123456

#mybatis:
#  mapper-locations: classpath:mapper/*.xml
#  type-aliases-package: com.xu.springcloud.entities  #所在Entity的别名

3. 创建消费者工程

 <dependencies>
        <dependency>
            <groupId>com.xu.springcloud</groupId>
            <artifactId>cloud-api-commons</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>com.xu.springcloud</groupId>
            <artifactId>cloud-api-commons</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--        监控-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <!--热部署-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>


    </dependencies>

4.创建通用工程

此工程存放通用的组件，直接maven快速构建即可

<dependencies>
    <!--热部署-->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
        <scope>runtime</scope>
        <optional>true</optional>
    </dependency>
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
    </dependency>

    <dependency>
        <groupId>cn.hutool</groupId>
        <artifactId>hutool-all</artifactId>
        <version>5.7.17</version>
    </dependency>
</dependencies>