SpringCloud2020 学习笔记（四） cloud-provider-payment8001支付模块

我使用spring boot 2.2.2

我使用spring cloud Hoxton.SR1

我使用spring cloud alibaba 2.1.0.RELEASE

为什么使用这个三个版本，是有讲究的；spring boot 2.2.2,spring cloud Hoxton.SR1,spring cloud alibaba 2.1.0.RELEASE

一.新建cloud-provider-payment8001支付模块

父工程坐标：

<groupId>cn.cookily.springcloud</groupId>
<artifactId>cloud2020</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>pom</packaging>

cloud-provider-payment8001坐标：

<groupId>cn.cookily.springcloud</groupId>
<artifactId>cloud-provider-payment8001</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>

子模块可以精简写

groupId,version,因为子模块继承父模块，所以gv可以省略

packaging可以省略

packaging 不显示声明 默认为jar类型

cloud-provider-payment8001坐标可改为：

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

1.选中cloud2020工程，新建模块

2.完整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>cloud2020</artifactId>
        <groupId>cn.cookily.springcloud</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

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

    <name>cloud-provider-payment8001</name>

    <dependencies>

        <!-- 引入自己定义的api通用包，可以使用Payment支付Entity -->
        <dependency>
            <groupId>cn.cookily.springcloud</groupId>
            <artifactId>cloud-api-commons</artifactId>
            <version>${project.version}</version>
        </dependency>
        <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.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.10</version>
        </dependency>
        <!--mysql-connector-java-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <!--jdbc-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <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>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

</project>

3.新建资源文件夹

4.新建配置文件application.yml

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: org.gjt.mm.mysql.Driver              # mysql驱动包
    url: jdbc:mysql://localhost:3306/springcloud2020?useUnicode=true&characterEncoding=utf-8&useSSL=false
    username: root
    password: root

mybatis:
  mapperLocations: classpath:mapper/*.xml
  type-aliases-package: cn.cookily.springcloud.entities    # 所有Entity别名类所在包

5.新建mapper文件夹存放mapper的xml文件

6.sql准备-创建数据库和表

sql脚本：

7.配置database(你也可以不配置，直接用navicat等工具也行)

8.创建controller，service，dao，mapper等文件

PaymentController.class

@RestController
@Slf4j
public class PaymentController {
    @Resource
    private PaymentService paymentService;

    @Value("${server.port}")
    private String serverPort;


    @PostMapping(value = "/payment/create")
    public CommonResult create(@RequestBody Payment payment) {
        int result = paymentService.create(payment);
        log.info("*****插入结果：" + result);

        if (result > 0) {
            return new CommonResult(200, "插入数据库成功,serverPort: " + serverPort, result);
        } else {
            return new CommonResult(444, "插入数据库失败", null);
        }
    }

    @GetMapping(value = "/payment/get/{id}")
    public CommonResult<Payment> getPaymentById(@PathVariable("id") Long id) {
        Payment payment = paymentService.getPaymentById(id);

        if (payment != null) {
            return new CommonResult(200, "查询成功,serverPort:  " + serverPort, payment);
        } else {
            return new CommonResult(444, "没有对应记录,查询ID: " + id, null);
        }
    }
    
}

PaymentService.class

public interface PaymentService {
    public int create(Payment payment);

    public Payment getPaymentById(@Param("id") Long id);
}

PaymentServiceImpl.class

@Service
public class PaymentServiceImpl implements PaymentService {
    @Resource
    private PaymentDao paymentDao;

    @Override
    public int create(Payment payment) {
        return paymentDao.create(payment);
    }

    @Override
    public Payment getPaymentById(Long id) {
        return paymentDao.getPaymentById(id);
    }
}

PaymentMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >

<mapper namespace="cn.cookily.springcloud.dao.PaymentDao">

    <insert id="create" parameterType="Payment" useGeneratedKeys="true" keyProperty="id">
        insert into payment(serial)
        values (#{serial});
    </insert>


    <resultMap id="BaseResultMap" type="cn.cookily.springcloud.entities.Payment">
        <id column="id" property="id" jdbcType="BIGINT"/>
        <id column="serial" property="serial" jdbcType="VARCHAR"/>
    </resultMap>
    <select id="getPaymentById" parameterType="Long" resultMap="BaseResultMap">
        select *
        from payment
        where id = #{id};
    </select>

</mapper>

9.改一下主启动类

@SpringBootApplication
public class PaymentMain8001
{
    public static void main(String[] args) {
        SpringApplication.run(PaymentMain8001.class, args);
    }
}

10.看一下结构

11.运行并测试

12.添加postman接口测试脚本

13.导入postman接口测试脚本

项目地址： https://github.com/cookily/cloud2020.git