HM-SCAli2【案例环境搭建】

1. 案例准备

以电商项目中的商品、订单、用户为案例进行学习

1.1 技术选型

maven：3.3.9
数据库：MySQL 5.7
持久层: SpingData Jpa
其他: SpringCloud Alibaba 技术栈

1.2 模块设计

springcloud-alibaba 父工程
shop-common 公共模块【实体类】
shop-user 用户微服务 【端口: 807x】
shop-product 商品微服务 【端口: 808x】
shop-order 订单微服务 【端口: 809x】

image-20221015150745210

1.3 微服务调用

在微服务架构中，最常见的场景就是微服务之间的相互调用。我们以电商系统中常见的用户下单为例来演示微服务的调用：客户向订单微服务发起一个下单的请求，在进行保存订单之前需要调用商品微服务查询商品的信息。
我们一般把服务的主动调用方称为服务消费者，把服务的被调用方称为服务提供者。

image-20221015151026817

在这种场景下，订单微服务就是一个服务消费者， 商品微服务就是一个服务提供者。

2 创建父工程

image-20221015151640467

image-20221015151705926

image-20221015152256592

<?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.yppah</groupId>
    <artifactId>sc-ali</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>pom</packaging>

    <!--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>2.1.1.RELEASE</spring-cloud-alibaba.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>

3 创建基础模块

image-20221015152544930

image-20221015152556665

image-20221015154020541

<?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>sc-ali</artifactId>
        <groupId>com.yppah</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>

package com.yppah.domain;

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")//实体类跟数据表的对应
@Data//不再去写set和get方法
public class User {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)//数据表主键生成策略：自增
    private Integer uid;//主键
    private String username;//用户名
    private String password;//密码
    private String telephone;//手机号
}


package com.yppah.domain;

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
}


package com.yppah.domain;

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
}


package com.yppah.domain;

import lombok.Data;

import javax.persistence.Entity;
import javax.persistence.Id;
import java.util.Date;

//消息事物状态记录
@Entity(name = "shop_txlog")
@Data
public class TxLog {
    @Id
    private String txId;
    private Date date;
}

4 创建用户微服务

456微服务步骤基本一致:
1 创建模块，导入依赖
2 创建SpringBoot主类
3 加入配置文件
4 创建必要的接口和实现类(controller service dao)

image-20221015154623702

image-20221015154641288

image-20221015154651543

image-20221015155811732

<?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>sc-ali</artifactId>
        <groupId>com.yppah</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.yppah</groupId>
            <artifactId>shop-common</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies>

</project>

package com.yppah;

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);
    }
}


server:
  port: 8071
spring:
  application:
    name: service-user
  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    url: jdbc:mysql:///hmscali_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

image-20221015160653833

package com.yppah.controller;

import org.springframework.web.bind.annotation.RestController;

@RestController
public class UserController {
}


package com.yppah.service;

public interface UserService {
}


package com.yppah.service.impl;

import com.yppah.service.UserService;

public class UserServiceImpl implements UserService {
}


package com.yppah.dao;

import com.yppah.domain.User;
import org.springframework.data.jpa.repository.JpaRepository;

public interface UserDao extends JpaRepository<User, Integer> { //User数据表及其中的主键类型

}

5 创建商品微服务

image-20221015161933001

<?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>sc-ali</artifactId>
        <groupId>com.yppah</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.yppah</groupId>
            <artifactId>shop-common</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies>

</project>

package com.yppah;

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);
    }
}


server:
  port: 8081
spring:
  application:
    name: service-product
  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    url: jdbc:mysql:///hmscali_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

package com.yppah.controller;

import org.springframework.web.bind.annotation.RestController;

@RestController
public class ProductController {
}


package com.yppah.service;

public interface ProductService {
}


package com.yppah.service.impl;

import com.yppah.service.ProductService;

public class ProductServiceImpl implements ProductService {
}


package com.yppah.dao;

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

public interface ProductDao extends JpaRepository<Product, Integer> { //User数据表及其中的主键类型

}

6 创建订单微服务

image-20221015162849920

posted @   yub4by  阅读(10)  评论(0)  编辑  收藏  举报
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