spring cloud 订单、支付微服务构建

父工程构建

1、new project
在这里插入图片描述
2、聚合工程名字

3、maven版本
3.5以上
4、工程名字
cloud2022
5、字符编码

6、注解生效激活

7、java编译版本选择8

8、file Type过滤

保证父目录干净利落

父工程pom和maven

1、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">
  <modelVersion>4.0.0</modelVersion>

  <groupId>cn.sp.springcloud</groupId>
  <artifactId>cloud2022</artifactId>
  <version>1.0-SNAPSHOT</version>
  <!-- 父工程选择打包类型为pom -->
  <packaging>pom</packaging>

  <!-- 统一管理jar包版本 -->
  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
    <junit.version>4.12</junit.version>
    <log4j.version>1.2.17</log4j.version>
    <lombok.version>1.16.18</lombok.version>
    <mysql.version>5.1.47</mysql.version>
    <druid.version>1.1.16</druid.version>
    <mybatis.spring.boot.version>1.3.0</mybatis.spring.boot.version>
  </properties>
  <!-- 子模块继承之后，提供作用：锁定版本+子modlue不用写groupId和version，但是子模块需要引入依赖  -->
  <dependencyManagement>
    <dependencies>
      <!--spring boot 2.2.2-->
      <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-dependencies</artifactId>
        <version>2.2.2.RELEASE</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>
      <!--spring cloud Hoxton.SR1-->
      <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-dependencies</artifactId>
        <version>Hoxton.SR1</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>
      <!--spring cloud alibaba 2.1.0.RELEASE-->
      <dependency>
        <groupId>com.alibaba.cloud</groupId>
        <artifactId>spring-cloud-alibaba-dependencies</artifactId>
        <version>2.1.0.RELEASE</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>
      <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>${mysql.version}</version>
      </dependency>
      <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>druid</artifactId>
        <version>${druid.version}</version>
      </dependency>
      <dependency>
        <groupId>org.mybatis.spring.boot</groupId>
        <artifactId>mybatis-spring-boot-starter</artifactId>
        <version>${mybatis.spring.boot.version}</version>
      </dependency>
      <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>${junit.version}</version>
      </dependency>
      <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>${log4j.version}</version>
      </dependency>
      <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <version>${lombok.version}</version>
        <optional>true</optional>
      </dependency>
    </dependencies>
  </dependencyManagement>

  <build>
    <plugins>
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
        <version>2.2.2.RELEASE</version>
        <configuration>
          <fork>true</fork>
          <addResources>true</addResources>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>

2、dependencyManagement和Dependencies

1、dependencyManagement--->管理依赖版本号
2、Maven会沿着父子关系向上走，直到找到这个依赖的版本号，然后使用
3、好处：避免每个子项目都要引入版本号，如果子项目中引用了版本号，则选择使用子项目中的版本号

3、跳过单元测试
在这里插入图片描述
4、父工程创建完成执行mvn install将父工程发布到仓库方便子工程继承

构建支付模块

1、建module
在这里插入图片描述
2、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>cloud2022</artifactId>
        <groupId>cn.sp.springcloud</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>provider-payment8001</artifactId>

    <dependencies>
        <!-- web和actuator永远绑定一块 -->
        <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、配yaml

server:
  port: 8001

spring:
  application:
    name: 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://172.19.3.235:3306/cloud_test?useUnicode=true&characterEncoding=utf-8&useSSL=false
    username: root
    password: Ankki_mySQL123

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

4、主启动类

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

5、业务类

entities.Payment

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

entities.CommonResult

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

dao.PaymentDao

@Mapper
public interface PaymentDao {
    int insert(Payment payment);
    Payment getById(@Param("id") Long id);
}

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="cn.sp.springcloud.dao.PaymentDao">

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


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

</mapper>

service.impl.PaymentServiceImpl

@Service
public class PaymentServiceImpl implements PaymentService {

    @Resource
    private PaymentDao paymentDao;

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

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

controller.PaymentController

@RestController
@Slf4j
public class PaymentController {

    @Resource
    private PaymentService paymentService;

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

    @PostMapping(value = "/payment/insert")
    public CommonResult insert(Payment payment) {
        int result = paymentService.insert(payment);
        log.info("插入结果，result:{}",result);
        if(result>0){
            return new CommonResult(200,"插入成功,serverPort:"+serverPort,result);
        }else{
            return new CommonResult(444,"插入失败,serverPort:"+serverPort,result);
        }
    }

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


}

6、测试
1、网页直接访问get方法
在这里插入图片描述
2、postman访问post方法

热部署

1、引入依赖

<dependency>
          <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-devtools</artifactId>
           <scope>runtime</scope>
           <optional>true</optional>
       </dependency>

2、引入maven插件

<build>
    <plugins>
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
        <version>2.2.2.RELEASE</version>
        <configuration>
          <fork>true</fork>
          <addResources>true</addResources>
        </configuration>
      </plugin>
    </plugins>
  </build>

3、修改自动重启设置compiler
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4、修改idea配置（2021版本）
在这里插入图片描述
5、重启idea

构建订单模块

1、学习restTemplate

1、restTemplate提供了多种便捷访问远程HTTP服务的方法
2、是一种便捷访问简单restful风格的模板类，是spring提供访问rest服务的客户端模板工具集
3、使用：粗暴无脑，（url，requestMap，ResponseBean.class）这三个参数分别代表
	rest请求地址
	请求参数
	HTTP响应转换被转换成的对象类型

官网地址

2、如何开启rundashboard
可以在工程目录下找.idea文件夹下的workspace.xml，在其中增加如下组件

<component name="RunDashboard">
    <option name="configurationTypes">
      <set>
        <option value="SpringBootApplicationConfigurationType" />
      </set>
    </option>
    <option name="ruleStates">
      <list>
        <RuleState>
          <option name="name" value="ConfigurationTypeDashboardGroupingRule" />
        </RuleState>
        <RuleState>
          <option name="name" value="StatusDashboardGroupingRule" />
        </RuleState>
      </list>
    </option>
  </component>

3、建order-module
在这里插入图片描述
4、改pom
遇到问题，导入了druid相关依赖后就要对其进行配置或者exlude，不然会自动加载，报错，导致启动不了

<?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>cloud2022</artifactId>
        <groupId>cn.sp.springcloud</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>consumer-order80</artifactId>

    <dependencies>
        <!-- web和actuator永远绑定一块 -->
        <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.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>

5、改yaml

	server:
	  port: 80

6、主启动

@SpringBootApplication
public class OrderApplication {

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

}

7、建实体

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

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

8、配置类

@Configuration
public class ApplicationContextConfig {


    @Bean
    public RestTemplate restTemplate(){
        return new RestTemplate();
    }

}

9、service

@Service
public class OrderServiceImpl implements OrderService {

    private static final String PAYMENT_URL = "http://localhost:8001/";

    @Resource
    private RestTemplate restTemplate;

    @Override
    public CommonResult<Payment> insert(Payment payment) {
        return restTemplate.postForObject(PAYMENT_URL+"payment/insert",payment,CommonResult.class);
    }

    @Override
    public CommonResult<Payment> getById(Long id) {
        return restTemplate.getForObject(PAYMENT_URL+"payment/get/"+id,CommonResult.class);
    }
}

10、controller

@RestController
public class OrderController {

    @Resource
    private OrderService orderService;

    @GetMapping("/consumer/payment/insert")
    public CommonResult<Payment> insert(Payment payment){
        return orderService.insert(payment);
    }

    @GetMapping("consumer/payment/get/{id}")
    public CommonResult<Payment> getPaymentById(@PathVariable Long id){
        return orderService.getById(id);
    }

}

11、测试
http://localhost/consumer/payment/get/1
http://localhost/consumer/payment/create?serial=aaaaa1
注意事项：post方法需要加上@RequestBody才能拿到请求的参数

工程重构

主要解决重复的实体或功能多次创建的问题
1、新建commons-api模块
在这里插入图片描述
2、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>cloud2022</artifactId>
        <groupId>cn.sp.springcloud</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>commons-api</artifactId>

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

    <dependencies>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <!-- 提供时间日期等操作工具 -->
        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
            <version>5.1.0</version>
        </dependency>
    </dependencies>

</project>

3、加入实体
在这里插入图片描述
4、maven clean/install
5、分别在order和payment中引入依赖即可使用

原文链接：https://blog.csdn.net/MpenggegeM/article/details/126814577