SCA - 二、环境搭建-欧泡果奶的小站

1. 案例准备

1.1 技术选型

maven: 3.8.4

数据库: MySQL 5.7

持久层: Spring Data JPA

其他: Spring Cloud Alibaba技术栈

1.2 模块设计

spring-cloud-alibab 父工程

shop-common 公共模块【实体类】

shop-order 订单微服务【端口: 809x】

shop-product 商品微服务【端口: 808x】

shop-user 用户微服务【端口: 807x】

模块依赖

2. 创建项目

2.1 创建父工程

创建一个maven工程，然后在pom.xml文件中添加下面内容

<?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.ochaly</groupId>
    <artifactId>spring-cloud-alibaba</artifactId>
    <packaging>pom</packaging>
    <version>1.0-SNAPSHOT</version>

    <!--父工程-->
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.3.RELEASE</version>
    </parent>

    <!--依赖版本的锁定-->
    <properties>
        <java.version>1.8</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <spring-cloud.version>Greenwich.RELEASE</spring-cloud.version>
        <spring-cloud-alibaba.version>2.1.0.RELEASE</spring-cloud-alibaba.version>
    </properties>

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

</project>

2.2 创建公共模块

2.2.1 创建shop-common模块，在pom.xml中添加依赖

<?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>spring-cloud-alibaba</artifactId>
        <groupId>com.ochaly</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>shop-common</artifactId>

    <!--依赖-->
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.56</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.6</version>
        </dependency>
    </dependencies>
</project>

2.2.2 创建实体类

User实体类

import lombok.Data;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

//用户
@Entity(name = "shop_user")
@Data
public class User {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Integer uid;//主键
    private String username;//用户名
    private String password;//密码
    private String telephone;//手机号
}

Product实体类

import lombok.Data;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

//商品
@Entity(name = "shop_product")
@Data
public class Product {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Integer pid;//主键

    private String pname;//商品名称
    private Double pprice;//商品价格
    private Integer stock;//库存
}

Order实体类

import lombok.Data;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

//订单
@Entity(name = "shop_order")
@Data
public class Order {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long oid;//订单id

    //用户
    private Integer uid;//用户id
    private String username;//用户名

    //商品
    private Integer pid;//商品id
    private String pname;//商品名称
    private Double pprice;//商品单价

    //数量
    private Integer number;//购买数量
}

2.3 创建用户模块

2.3.1 创建shop-user模块，在pom.xml中添加依赖

<?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>spring-cloud-alibaba</artifactId>
        <groupId>com.ochaly</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>shop-user</artifactId>

    <dependencies>
        <!--springboot-web-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--shop-common-->
        <dependency>
            <groupId>com.ochaly</groupId>
            <artifactId>shop-common</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies>

</project>

2.3.2 创建启动类UserApplication

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

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

2.3.3 创建配置文件application.yml

server:
  port: 8071
spring:
  application:
    name: service-user
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://172.16.128.128:3306/shop?serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8&useSSL=true
    username: root
    password: root
  jpa:
    properties:
      hibernate:
        hbm2ddl:
          auto: update
        dialect: org.hibernate.dialect.MySQL5InnoDBDialect

2.4 创建商品模块

2.4.1 创建shop-product模块，在pom.xml中添加依赖

<?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>spring-cloud-alibaba</artifactId>
        <groupId>com.ochaly</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>shop-product</artifactId>

    <dependencies>
        <!--springboot-web-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--shop-common-->
        <dependency>
            <groupId>com.ochaly</groupId>
            <artifactId>shop-common</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies>

</project>

2.4.2 创建启动类ProductApplication

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

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

2.4.3 创建配置文件application.yml

server:
  port: 8081
spring:
  application:
    name: service-product
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://172.16.128.128:3306/shop?serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8&useSSL=true
    username: root
    password: root
  jpa:
    properties:
      hibernate:
        hbm2ddl:
          auto: update
        dialect: org.hibernate.dialect.MySQL5InnoDBDialect

2.4.4 创建ProductDao接口

import com.ochaly.domain.Product;
import org.springframework.data.jpa.repository.JpaRepository;

public interface ProductDao extends JpaRepository<Product, Integer> {
}

2.4.5 创建ProductService接口和实现类

ProductService接口

import com.ochaly.domain.Product;

public interface ProductService {

    /**
     * 根据pid查询商品信息
     * @param pid 商品编号
     * @return 商品信息
     */
    Product findByPid(Integer pid);
}

ProductService接口实现类

import com.ochaly.dao.ProductDao;
import com.ochaly.domain.Product;
import com.ochaly.service.ProductService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class ProductServiceImpl implements ProductService {
    @Autowired
    private ProductDao productDao;

    @Override
    public Product findByPid(Integer pid) {
        return productDao.findById(pid).get();
    }
}

2.4.6 创建ProductController

import com.alibaba.fastjson.JSON;
import com.ochaly.domain.Product;
import com.ochaly.service.ProductService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@Slf4j
@RestController
@RequestMapping("product")
public class ProductController {
    @Autowired
    private ProductService productService;

    @RequestMapping("/{pid}")
    public Product product(@PathVariable("pid") Integer pid) {
        log.info("接下来进行{}号商品信息的查询", pid);
        Product product = productService.findByPid(pid);
        log.info("商品信息查询成功, {}", JSON.toJSONString(product));
        return product;
    }
}

2.4.7 启动工程，等到数据库表创建完毕之后，加入测试数据

INSERT INTO shop_product VALUE(NULL,'小米','1000','5000');
INSERT INTO shop_product VALUE(NULL,'华为','2000','5000');
INSERT INTO shop_product VALUE(NULL,'苹果','3000','5000');
INSERT INTO shop_product VALUE(NULL,'OPPO','4000','5000');

2.4.8 访问服务

商品查询

2.5 创建订单模块

2.5.1 创建shop-order模块，在pom.xml中添加依赖

<?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>spring-cloud-alibaba</artifactId>
        <groupId>com.ochaly</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>shop-order</artifactId>

    <dependencies>
        <!--springboot-web-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--shop-common-->
        <dependency>
            <groupId>com.ochaly</groupId>
            <artifactId>shop-common</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies>

</project>

2.5.2 创建启动类OrderApplication

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

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

2.5.3 创建配置文件application.yml

server:
  port: 8091
spring:
  application:
    name: service-order
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://172.16.128.128:3306/shop?serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8&useSSL=true
    username: root
    password: root
  jpa:
    properties:
      hibernate:
        hbm2ddl:
          auto: update
        dialect: org.hibernate.dialect.MySQL5InnoDBDialect

2.5.4 创建OrderDao接口

import com.ochaly.domain.Order;
import org.springframework.data.jpa.repository.JpaRepository;

public interface OrderDao extends JpaRepository<Order, Integer> {
}

2.5.5 创建OrderService接口和实现类

OrderService接口

import com.ochaly.domain.Order;

public interface OrderService {
    void createOrder(Order order);
}

OrderService接口实现类

import com.ochaly.dao.OrderDao;
import com.ochaly.service.OrderService;
import com.ochaly.domain.Order;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class OrderServiceImpl implements OrderService {
    @Autowired
    private OrderDao orderDao;

    @Override
    public void createOrder(Order order) {
        orderDao.save(order);
    }
}

2.5.6 创建RestTemplate

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

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

2.5.7 创建OrderController

import com.alibaba.fastjson.JSON;
import com.ochaly.domain.Order;
import com.ochaly.domain.Product;
import com.ochaly.service.OrderService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;


@Slf4j
@RestController
@RequestMapping("order")
public class OrderController {
    @Autowired
    private RestTemplate restTemplate;
    @Autowired
    private OrderService orderService;

    @RequestMapping("/prod/{pid}")
    public Order order(@PathVariable("pid") Integer pid) {
        log.info("接到{}号商品的下单请求，接下来调用商品微服务查询此商品信息", pid);
        // restTemplate远程调用
        Product product =
                restTemplate.getForObject("http://localhost:8081/product/" + pid, Product.class);

        log.info("查询到{}号商品信息，内容是{}", pid, JSON.toJSONString(product));

        Order order = new Order();
        order.setUid(1);
        order.setUsername("测试用户");
        order.setPid(pid);
        order.setPname(product.getPname());
        order.setPprice(product.getPprice());
        order.setNumber(1);

        orderService.createOrder(order);

        log.info("创建订单成功，订单信息为{}", JSON.toJSONString(order));

        return order;
    }
}

2.5.8 启动工程，访问服务

创建订单

目录CONTENT

SCA - 二、环境搭建