02-SpringCloud 学前准备
学习版本
创建父工程
父工程pom文件
创建父工程后mvn install发布到本地仓库供子工程继承。
Maven 的dependencyManagement 和dependencies
微服务服务提供者
创建cloud-provider-payment8001微服务提供者支付Module模块。
创建新模块主要步骤：
- 建module
- 改POM
- 写YML
- 主启动
- 业务类
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>mscloud03</artifactId>
<groupId>com.atguigu.springcloud</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>cloud-provider-payment8001</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>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>
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 com.mysql.jdbc.Driver
url: jdbc:mysql://localhost:3306/db2019?useUnicode=true&characterEncoding=utf-8&useSSL=false
username: root
password: 123456
mybatis:
mapperLocations: classpath:mapper/*.xml
type-aliases-package: com.atguigu.springcloud.entities # 所有Entity别名类所在包
主启动类
package com.atguigu.springcloud;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class PaymentMain8001 {
public static void main(String[] args) {
SpringApplication.run(PaymentMain8001.class, args);
}
}
业务类
entities
Payment：
package com.atguigu.springcloud.entities;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import java.io.Serializable;
/**
* @auther zzyy
* @create 2020-01-27 20:01
*/
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Payment implements Serializable
{
private Long id;
private String serial;
}
Json封装体CommonResult：
package com.atguigu.springcloud.entities;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
/**
* @auther zzyy
* @create 2020-01-27 20:17
*/
@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);
}
}
dao
PaymentDao:
package com.atguigu.springcloud.dao;
import com.atguigu.springcloud.entities.Payment;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;
/**
* @auther zzyy
* @create 2020-01-27 20:21
*/
@Mapper //import org.apache.ibatis.annotations.Mapper;
public interface PaymentDao
{
public int create(Payment payment);
public Payment getPaymentById(@Param("id") Long id);
}
service
PaymentService
package com.atguigu.springcloud.service;
import com.atguigu.springcloud.entities.Payment;
import org.apache.ibatis.annotations.Param;
/**
* @auther zzyy
* @create 2020-01-27 21:11
*/
public interface PaymentService
{
public int create(Payment payment);
public Payment getPaymentById(@Param("id") Long id);
}
PaymentServiceImpl
package com.atguigu.springcloud.service.impl;
import com.atguigu.springcloud.dao.PaymentDao;
import com.atguigu.springcloud.entities.Payment;
import com.atguigu.springcloud.service.PaymentService;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
/**
* @auther zzyy
* @create 2020-01-27 21:12
*/
@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);
}
}
contorller
PaymentController
package com.atguigu.springcloud.controller;
import com.atguigu.springcloud.entities.CommonResult;
import com.atguigu.springcloud.entities.Payment;
import com.atguigu.springcloud.service.PaymentService;
import com.sun.media.jfxmedia.logging.Logger;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.*;
import javax.annotation.Resource;
/**
* @auther zzyy
* @create 2020-01-27 21:17
*/
@RestController
@Slf4j
public class PaymentController
{
@Resource
private PaymentService paymentService;
@PostMapping(value = "/payment/create")
public CommonResult create(@RequestBody Payment payment)
{
int result = paymentService.create(payment);
log.info("*****插入操作返回结果:" + result);
if(result > 0)
{
return new CommonResult(200,"插入数据库成功",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);
log.info("*****查询结果:{}",payment);
if (payment != null) {
return new CommonResult(200,"查询成功",payment);
}else{
return new CommonResult(444,"没有对应记录,查询ID: "+id,null);
}
}
}
微服务服务消费者
新建cloud-comsumer-order80 服务消费者，通过RestTemplate访问服务提供者。服务消费者使用的不是视频上的80端口，而是8080端口。
工程重构
将服务提供者和服务消费者的公用entity抽取到一个通用cloud-api-commons工程。供所有工程通用。
