SpringCloud学习-part3 支付模块的构建

建module

上一节已经建完。

改pom

<?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>com.ezerbel.cloud</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

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

    <dependencies>
        <!-- 包含了sleuth zipkin 数据链路追踪-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zipkin</artifactId>
        </dependency>
        <!--&lt;!&ndash; 引用自己定义的api通用包，可以使用Payment支付Entity &ndash;&gt;-->
        <!--<dependency>-->
            <!--<groupId>com.eiletxie.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>
        <!--监控-->
        <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>
        <!--eureka client-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <!--如果没写版本,从父层面找,找到了就直接用,全局统一-->
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
        </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>
        <!--热部署-->
        <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>

写YML

server:
  port: 8080

spring:
  application:
    name: cloud-payment-service
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    driver-class-name:  com.mysql.jdbc.Driver
    # 防止报SSL安全加固未禁用也未指定的错误
    url: jdbc:mysql://192.168.101.7:3306/cloudedu?useunicode=true&characterEncoding=utf-8&useSSL=false
    username: root
    password: 123

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

主启动

package com.ezerbel.springcloud;

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

/**
 * @Author: EzerbelCN
 * @Date: 2020/7/19 11:57
 */
@SpringBootApplication
public class PaymentMain8001 {
    public static void main(String[] args) {
        SpringApplication.run(PaymentMain8001.class,args);
    }
}

业务类Entities

payment

import lombok.Data;
import lombok.NoArgsConstructor;

import java.io.Serializable;

/**
 * @Author: EzerbelCN
 * @Date: 2020/7/19 12:51
 */

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

CommonResult

package com.ezerbel.springcloud.entities;

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

/**
 * @Author: EzerbelCN
 * @Date: 2020/7/19 12:54
 */
@Data
@AllArgsConstructor
@NoArgsConstructor
/**
 * Json 封装体，用于规范前端交互过程
 */
public class CommonResult<T> {
    private Integer code;
    private String message;
    private T       data;

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

PaymentDao

package com.ezerbel.springcloud.dao;

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

/**
 * @Author: EzerbelCN
 * @Date: 2020/7/19 13:01
 */
@Mapper
public interface PaymentDao {

    public int create(Payment payment);

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

PaymentService

package com.ezerbel.springcloud.service;

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

/**
 * @Author: EzerbelCN
 * @Date: 2020/7/19 13:28
 */

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

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

package com.ezerbel.springcloud.service.impl;

import com.ezerbel.springcloud.dao.PaymentDao;
import com.ezerbel.springcloud.entities.Payment;
import com.ezerbel.springcloud.service.PaymentService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

/**
 * @Author: EzerbelCN
 * @Date: 2020/7/19 13:29
 */

@Service
public class PaymentServiceImpl implements PaymentService {

    @Autowired
    private PaymentDao paymentDao;

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

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

PaymentController

package com.ezerbel.springcloud.controller;

import com.ezerbel.springcloud.entities.CommonResult;
import com.ezerbel.springcloud.entities.Payment;
import com.ezerbel.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;

/**
 * @Author: EzerbelCN
 * @Date: 2020/7/19 13:32
 */

@Slf4j
@RestController
public class PaymentController {

    @Resource
    private PaymentService paymentService;

    /**
     *  post 表示写操作
     * @param payment
     * @return
     */
    @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,"插入数据成功",result);
        }
        else{
            return new CommonResult(444,"插入数据库失败",null);
        }
    }

    @GetMapping(value="/payment/get/{id}")
    public CommonResult getPaymentById(@PathVariable("id") Long id){
        Payment payment = paymentService.getPaymentById(id);
        if (payment == null){
            return new CommonResult(444,"查询数据失败，ID："+id,null);
        }else{
            return new CommonResult(200,"得到对应数据",payment);
        }
    }

}

mybatis的mapper文件

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.ezerbel.springcloud.dao.PaymentDao">

    <insert id="create" parameterType="com.ezerbel.springcloud.entities.Payment" useGeneratedKeys="true" keyProperty="id">
        insert into payment(serial)values (#{serial});
    </insert>
    
    <resultMap id="BaseReultMap" type="com.ezerbel.springcloud.entities.Payment">
        <id column="id" property="id" jdbcType="BIGINT"/>
        <id column="serial" property="serial" jdbcType="VARCHAR"/>
    </resultMap>
    
    <select id="getPaymentById" resultMap="BaseReultMap" parameterType="long">
        select * from payment where id = #{id}
    </select>

</mapper>