【springcloudalibaba】-支付模塊的構建（zcw-demo）【二】

前言

本篇博客主要是向大家介紹支付模塊的構建及demo的練習，希望看到本篇博客的你，能有所提升，O(∩_∩)O哈哈~

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一、創建支付模塊

1.創建module

2.修改pom文件

<?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>com.zcw.springcloud2020508</artifactId>
        <groupId>org.zcw</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>cloud-provider-payment-zcw</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.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</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>
        </dependency>
    </dependencies>
</project>

3.修改YML文件

server:
  port: 8081

spring:
  application:
    name: cloud-provider-payment-zcw-service
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource   # 當前數據源操作類型
    driver-class-name: org.gjt.mm.mysql.Driver
    url: jdbc:mysql://localhost:3306/zcw20200509?useUnicode=true&characterEncoding=utf-8&useSSL=false
    username: root
    password: root

mybatis:
  mapper-locations: classpath:mapper/*.xml
  type-aliases-package: com.zcw.springcloud.entities # 所有entity別名類所在包

4.創建啓動類：

package com.zcw.springcloud;

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

/**
 * @ClassName : PaymentMain0509
 * @Description :
 * @Author : Zhaocunwei
 * @Date: 2020-05-09 11:44
 */
@SpringBootApplication
public class PaymentMain0509 {
    public static void main(String[] args) {
        SpringApplication.run(PaymentMain0509.class,args);
    }
}

5.業務類創建：

• 創建sql語句：

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 =utf8

• entities創建

package com.zcw.springcloud.entities;

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

import java.io.Serializable;

/**
 * @ClassName : Payment
 * @Description :
 * @Author : Zhaocunwei
 * @Date: 2020-05-09 14:06
 */
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Payment implements Serializable {
    private Long id;
    private String serial;
}

package com.zcw.springcloud.entities;

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

/**
 * @ClassName : CommonResult
 * @Description :JSON封裝體CommonResult
 * @Author : Zhaocunwei
 * @Date: 2020-05-09 14:09
 */
@AllArgsConstructor
@NoArgsConstructor
@Data
public class CommonResult<T> {
    private Integer code;
    private String message;
    private T data;
    public CommonResult(Integer code,String message){
        this(code,message,null);
    }
}

• dao層創建

package com.zcw.springcloud.dao;

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

/**
 * @ClassName : PaymentDao
 * @Description :
 * @Author : Zhaocunwei
 * @Date: 2020-05-09 14:16
 */
@Mapper
public interface PaymentDao {

     int create(Payment payment);

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

<?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.zcw.springcloud.dao.PaymentDao">
    <resultMap id="BaseResultMap" type="com.zcw.springcloud.entities.Payment">
        <id column="id" jdbcType="BIGINT" property="id" />
        <result column="serial" jdbcType="VARCHAR" property="serial" />
    </resultMap>
    <sql id="Base_Column_List">
    id, serial
  </sql>
    <insert id="create" parameterType="Payment" useGeneratedKeys="true" keyProperty="id">
        insert into payment(serial) values(#{serial});
    </insert>
    <select id="getPaymentById" parameterType="Long" resultMap="BaseResultMap">
        select * from payment where id=#{id};
    </select>

</mapper>

上面這些類xml文件可以直接通過下面的工具直接逆向出來：

• service創建

package com.zcw.springcloud.service;

import com.zcw.springcloud.entities.Payment;

/**
 * @ClassName : PaymentService
 * @Description :
 * @Author : Zhaocunwei
 * @Date: 2020-05-09 14:51
 */
public interface PaymentService {
    int create(Payment payment);
    Payment getPaymentById(Long id);
}

package com.zcw.springcloud.service.impl;

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

import javax.annotation.Resource;

/**
 * @ClassName : PaymentServiceImpl
 * @Description :
 * @Author : Zhaocunwei
 * @Date: 2020-05-09 14:52
 */
@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);
    }
}

• controller層創建

package com.zcw.springcloud.controller;

import com.zcw.springcloud.entities.CommonResult;
import com.zcw.springcloud.entities.Payment;
import com.zcw.springcloud.service.PaymentService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;

/**
 * @ClassName : PaymentController
 * @Description :
 * @Author : Zhaocunwei
 * @Date: 2020-05-09 14:57
 */
@RestController
@Slf4j
public class PaymentController {
    @Resource
    private PaymentService paymentService;

    @PostMapping(value = "/payment/create")
    public CommonResult create(Payment payment){
        int result= paymentService.create(payment);
        if(result >0){
            return new CommonResult(200,"插入數據庫成功",result);
        }
        return new CommonResult(500,"失敗",null);
    }
    @GetMapping(value = "/payment/get/{id}")
    public CommonResult getPaymentById(@PathVariable("id")Long id ){
        Payment paymentById = paymentService.getPaymentById(id);
        if(paymentById !=null){
            return new CommonResult(200,"成功",paymentById);
        }
         return new CommonResult(444,"查詢失敗",null);
    }
}

6.測試：

7.通過小小的練習竟然出現了問題

解決bug，斷點調試

• 修改了參數的請求形式
  
• 查詢數據庫