消费者订单模块
好的，让我们在一起来背一遍：
- 建模块
- 改pom
- 写yml
- 启动类
- 业务类
业务类编写流程如下：
- 建表写sql
- 实体类（数据库映射实体类，向前端传递实体类）
- 书写dao和mapper映射文件
- service（面向接口编程接口（接口写逻辑）和impl写实现）
- controller
1.建Module
创建名为cloud-consumer-order80的maven工程。
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>cloud</artifactId> <groupId>com.caq.cloud</groupId> <version>1.0-SNAPSHOT</version> </parent> <modelVersion>4.0.0</modelVersion> <artifactId>cloud-customer-order80</artifactId> <properties> <maven.compiler.source>8</maven.compiler.source> <maven.compiler.target>8</maven.compiler.target> </properties> <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.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.写YML
server: port: 80
4.主启动
import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; /** Hello world! * */ @SpringBootApplication public class OrderMain80 { public static void main( String[] args ){ SpringApplication.run(OrderMain80.class, args); } }
5.业务类
实体类：
package com.caq.cloud.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; } java 复制代码 package com.caq.cloud.entities; 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); } }
控制层：
package com.caq.cloud.controller; import com.caq.cloud.entities.CommonResult; import com.caq.cloud.entities.Payment; import lombok.extern.slf4j.Slf4j; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestBody; import org.springframework.web.bind.annotation.RestController; import org.springframework.web.client.RestTemplate; import javax.annotation.Resource; @RestController @Slf4j public class OrderController { public static final String PAYMENT_URL = "http://localhost:8001"; @Resource private RestTemplate resetTemplate; @GetMapping("/consumer/payment/create") public CommonResult<Payment> create(Payment payment){ return resetTemplate.postForObject(PAYMENT_URL+"/payment/create",payment,CommonResult.class); } @GetMapping("/consumer/payment/get/{id}") public CommonResult<Payment> getPayment(@PathVariable("id") Long id){ return resetTemplate.getForObject(PAYMENT_URL+"/payment/get/"+id,CommonResult.class); } }
配置类：
package com.caq.cloud.config; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.web.client.RestTemplate; @Configuration public class ApplicationContextConfig { //通过注解的方式注入，这样我们的容器里就有这个resttemplate对象 @Bean public RestTemplate getRestTemplate() { return new RestTemplate(); } }
测试
工程重构
观察cloud-consumer-order80与cloud-provider-payment8001两工程有重复代码（entities包下的实体），重构。
1.新建 - cloud-api-commons
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>cloud</artifactId> <groupId>com.caq.cloud</groupId> <version>1.0-SNAPSHOT</version> </parent> <modelVersion>4.0.0</modelVersion> <artifactId>cloud-api-commons</artifactId> <dependencies> <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>cn.hutool</groupId> <artifactId>hutool-all</artifactId> <version>5.1.0</version> </dependency> </dependencies> </project>
3.entities
将cloud-consumer-order80与cloud-provider-payment8001两工程的公有entities包移至cloud-api-commons工程下。
4.maven clean、install cloud-api-commons工程，以供给cloud-consumer-order80与cloud-provider-payment8001两工程调用。
5.订单80和支付8001分别改造
将cloud-consumer-order80与cloud-provider-payment8001两工程的公有entities包移除 引入cloud-api-commons依赖
<dependency> <groupId>com.caq.cloud</groupId> <artifactId>cloud-api-commons</artifactId> <version>${project.version}</version> </dependency>
api-common目录结构如下：
==测试==
