03-SpringCloud 支付模块搭建

小知识：

常用的创建微服务模块的套路

1：创建Module
2：修改POM配置文件
3：编写yml配置文件
4：编写启动的主类
5：编写业务类

 这个支付模块的构建只是说的一种场景，而不是真的对接支付接口，只是走一个微服务，服务之间的调用流程

 支付微服务提供者

创建module（只写一次之后的创建只会写修改配置文件，创建流程都是这样的）

右键新建Module

 

 1：选择Maven

2：选择JDK8

3：点击next，不选择模板

 

 修改模块名称，为了方便直接携带端口

点击Finish

修改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>springcloud</artifactId>
        <groupId>com.dance</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

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

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>

    <dependencies>
        <!--包含了sleuth+zipkin-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zipkin</artifactId>
        </dependency>
        <!--eureka-client-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </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>

创建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/my?useUnicode=true&characterEncoding=utf-8&useSSL=false
    username: root
    password: 123445

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

在这里可以看到连接了MySQL 并且有mybatis的配置

先创建配置对应的别名包，再创建xml存放的mapper包

 创建数据库和表

因为连接了mysql，所以我们需要创建对应名称的数据库和之后需要使用的表

有数据库的小伙伴可以直接创建，没有的，我在这里推荐一个好用的mysql工具

那就是xmapp，可以通过面板开启和关闭mysql

然后通过Navicat连接mysql，右击新建数据库

 新建表

CREATE TABLE `payment`(
    `id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT 'ID',
    `serial` varchar(200) DEFAULT '',
    PRIMARY KEY (id)
)ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8mb4

新建主启动类

package com.dance.springcloud;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class PaymentMain001 {

    public static void main(String[] args) {
        SpringApplication.run(PaymentMain001.class, args);
    }
}

至于包名的话，大家看代码吧，如果不想自己写的话，我会在最后上传自己的码云地址的，有喜欢的小伙伴可以自己去下载

新建实体类

package com.dance.springcloud.entities;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.io.Serializable;

@Data
@AllArgsConstructor
@NoArgsConstructor
public class Payment implements Serializable {
    private Long id;
    private String serial;
}

新建统一返回的返回类

package com.dance.springcloud.common;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@AllArgsConstructor
@NoArgsConstructor
public class CommonResult<T>{
    private Integer code;
    private String message;
    private T data;

    public CommonResult(Integer code, String message){
        this(code, message, null);
    }
}

新建dao

package com.dance.springcloud.dao;

import com.dance.springcloud.entities.Payment;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;

/**
 */
@Mapper
//@Repository不用Spring的
public interface PaymentDao
{
    public int create(Payment payment);

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

MyBatis映射文件PaymentMapper.xml，路径：resources/mapper/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="com.dance.springcloud.dao.PaymentDao">

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

    <resultMap id="BaseResultMap" type="com.dance.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>

新建Service

package com.dance.springcloud.service;

import com.dance.springcloud.entities.Payment;
import org.apache.ibatis.annotations.Param;

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

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

新建Service实现类

package com.dance.springcloud.service.impl;

import com.dance.springcloud.dao.PaymentDao;
import com.dance.springcloud.entities.Payment;
import com.dance.springcloud.service.PaymentService;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;

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

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

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

新建Controller

package com.dance.springcloud.controller;

import com.dance.springcloud.entities.CommonResult;
import com.dance.springcloud.entities.Payment;
import com.dance.springcloud.service.PaymentService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;

/**
 *
 */
@RestController
@Slf4j
public class PaymentController {
    
    @Value("${server.port}")
    private String serverPort;
    
    @Resource
    private PaymentService paymentService;

    @PostMapping(value = "/payment/create")
    public CommonResult create(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);
        }
    }
}

好了到此，基础的支付微服务提供者8001就创建完成了

启动项目后，应为添加了Eureka依赖的原因，项目启动后，下面会一直访问Eureka的注册地址，访问不到会报错，不过不用管

测试

1. 浏览器 - http://localhost:8001/payment/get/1
2. Postman - http://localhost:8001/payment/create?serial=lun2

 访问成功

测试添加数据

 到此提供者支付模块搭建完成，其实我也感觉上面写的挺乱的，所以我创建了码云的git仓库

https://gitee.com/flower-dance-mrz/spring-cloud-learning-code.git

这个就是我的项目地址了

作者：彼岸舞

时间：2021816

内容关于：Spring Cloud H版

本文属于作者原创,未经允许,禁止转发