31、搭建微服务零基础

1、SpringCloud、SpringBoot、SpringCloud Alibaba 的版本选型

 

 2、创建中工程的父工程

<?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.atguigu.springcloud</groupId>
    <artifactId>springcloud2021</artifactId>
    <version>1.0-SNAPSHOT</version>
    <modules>
        <module>cloud-provider-payment8001</module>
    </modules>
    <packaging>pom</packaging>


    <properties>
        <java.version>1.8</java.version>
        <maven.compiler.source>${java.version}</maven.compiler.source>
        <maven.compiler.target>${java.version}</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

        <junit.version>4.12</junit.version>
        <log4.version>1.2.17</log4.version>
        <lombok.version>1.16.18</lombok.version>
        <druid.version>1.1.18</druid.version>
        <mybatis-plus.version>3.3.1</mybatis-plus.version>
        <generator.version>3.0.6</generator.version>
        <moredatasource.version>3.3.2</moredatasource.version>
        <hutool.version>5.3.9</hutool.version>
        <!-- Projects -->
        <jackson.version>2.9.6</jackson.version>
        <fastjson.version>1.2.12</fastjson.version>
        <swagger.version>2.9.2</swagger.version>
        <swagger-bootstrap-ui.version>1.9.6</swagger-bootstrap-ui.version>
    </properties>

    <dependencyManagement>
        <dependencies>
            <!-- Spring Boot -->
            <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 -->
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Hoxton.SR1</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <!-- Spring Cloud Alibaba -->
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>2.0.1.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid</artifactId>
                <version>${druid.version}</version>
            </dependency>
            <!-- mybatis-plus的依赖 -->
            <dependency>
                <groupId>com.baomidou</groupId>
                <artifactId>mybatis-plus-boot-starter</artifactId>
                <version>${mybatis-plus.version}</version>
            </dependency>
            <!-- mybatis-plus的自动生成依赖 -->
            <dependency>
                <groupId>com.baomidou</groupId>
                <artifactId>mybatis-plus-generator</artifactId>
                <version>${generator.version}</version>
            </dependency>
            <!-- mybatis-plus多数据源 -->
            <dependency>
                <groupId>com.baomidou</groupId>
                <artifactId>dynamic-datasource-spring-boot-starter</artifactId>
                <version>${moredatasource.version}</version>
            </dependency>

            <dependency>
                <groupId>org.apache.velocity</groupId>
                <artifactId>velocity-engine-core</artifactId>
                <version>2.1</version>
            </dependency>

            <!-- lombok -->
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <version>${lombok.version}</version>
            </dependency>
            <!-- HuTool -->
            <dependency>
                <groupId>cn.hutool</groupId>
                <artifactId>hutool-all</artifactId>
                <version>${hutool.version}</version>
            </dependency>
            <dependency>
                <groupId>com.fasterxml.jackson.core</groupId>
                <artifactId>jackson-databind</artifactId>
                <version>${jackson.version}</version>
            </dependency>

            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>fastjson</artifactId>
                <version>${fastjson.version}</version>
            </dependency>
            <dependency>
                <groupId>io.springfox</groupId>
                <artifactId>springfox-swagger2</artifactId>
                <version>${swagger.version}</version>
            </dependency>
            <dependency>
                <groupId>io.springfox</groupId>
                <artifactId>springfox-swagger-ui</artifactId>
                <version>${swagger.version}</version>
            </dependency>

            <dependency>
                <groupId>com.github.xiaoymin</groupId>
                <artifactId>swagger-bootstrap-ui</artifactId>
                <version>${swagger-bootstrap-ui.version}</version>
            </dependency>

        </dependencies>
    </dependencyManagement>

    <!-- Maven 多环境配置 -->
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>${java.version}</source>
                    <target>${java.version}</target>
                    <skip>true</skip>
                    <encoding>${project.build.sourceEncoding}</encoding>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

3、创建子工程 cloud-provider-payment8001支付工程的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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>springcloud2021</artifactId>
        <groupId>com.atguigu.springcloud</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>cloud-provider-payment8001</artifactId>

    <dependencies>
        <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>

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

        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jdbc</artifactId>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>

    </dependencies>


</project>

4、创建子工程 cloud-provider-payment8001的application.ymlm

server:
  port: 8001

spring:
  application:
    name: cloud-payment-service
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://8.129.215.115:3306/mybatis_plus?useUnicode=true&characterEncoding=utf-8&useSSL=false
    username: root
    password: root

mybatis-plus:
  global-config:
    db-config:
      logic-delete-value: 1 # 逻辑已删除值(默认为 1)
      logic-not-delete-value: 0 # 逻辑未删除值(默认为 0)
  mapper-locations: classpath:mapper/*Mapper.xml
  type-aliases-package: com.atauigu.springcloud.entity



logging:
  level:
    com.atauigu.springcloud.mapper: debug

5、创建子工程 cloud-provider-payment8001的主启动类

@SpringBootApplication
public class PaymentApplication8001 {
    public static void main(String[] args) {
        SpringApplication.run(PaymentApplication8001.class,args);
    }
}

 6、创建子工程：cloud-consumer-order80 消费者工程 添加pom依赖

<dependencies>
        <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>

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

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
        </dependency>

        <dependency>
            <groupId>com.atguigu.springcloud</groupId>
            <artifactId>cloud-api-commons</artifactId>
            <version>${project.version}</version>
        </dependency>
        <!-- 数据库相关 -->
        <!--        <dependency>-->
        <!--            <groupId>com.baomidou</groupId>-->
        <!--            <artifactId>mybatis-plus-boot-starter</artifactId>-->
        <!--        </dependency>-->
        <!--        <dependency>-->
        <!--            <groupId>com.alibaba</groupId>-->
        <!--            <artifactId>druid</artifactId>-->
        <!--        </dependency>-->
        <!--        <dependency>-->
        <!--            <groupId>mysql</groupId>-->
        <!--            <artifactId>mysql-connector-java</artifactId>-->
        <!--        </dependency>-->
        <!--        <dependency>-->
        <!--            <groupId>org.springframework.boot</groupId>-->
        <!--            <artifactId>spring-boot-starter-data-jdbc</artifactId>-->
        <!--        </dependency>-->

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
    </dependencies>

 7、创建子工程：cloud-consumer-order80 的application.yml

server:
  port: 80

spring:
  application:
    name: cloud-order-service

8、使用RestTemplate 做服务之间的远程调用编写配置类

@Configuration
public class RestConfig {

    @Bean
    public RestTemplate restTemplate () {
        return new RestTemplate();
    }
}

9、调用远程服务的测试

@RestController
@RequestMapping(value = "/consumer")
public class OrderController {

    private static final String payment_url = "http://localhost:8001";
    @Autowired
    private RestTemplate restTemplate;

    @GetMapping(value = "/payment/create")
    public CommonResult<Payment> create (Payment payment) {
        return restTemplate.postForObject(payment_url + "/payment/create",payment,CommonResult.class);
    }

    @GetMapping(value = "/payment/get")
    public CommonResult<Payment> getPayment(Long id) {
        return restTemplate.getForObject(payment_url + "/payment/get/" + id, CommonResult.class);
    }

    @GetMapping(value = "/payment/list")
    public CommonResult<Payment> getPaymentList(Payment payment) {
        return restTemplate.postForObject(payment_url + "/payment/list/",payment, CommonResult.class);
    }


}

10、重构项目：创建通用的自己的项目工具Jar包 cloud-api-commons 添加项目依赖

<dependencies>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
        <!-- HuTool -->
        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
        </dependency>
        <!-- fastjson -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>${fastjson.version}</version>
        </dependency>
        <!-- swagger2 start -->
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>${swagger.version}</version>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>${swagger.version}</version>
        </dependency>

        <dependency>
            <groupId>com.github.xiaoymin</groupId>
            <artifactId>swagger-bootstrap-ui</artifactId>
            <version>${swagger-bootstrap-ui.version}</version>
        </dependency>
        <!-- swagger2 end -->
    </dependencies>

11、添加通用的实体类，把所有的实体类都放到这个工程下，如果其他服务要用，直接引入这个jar包