04-SpringCloud 消费者订单模块搭建

为什么要创建消费者订单模块？

　　应为上一章节已经创建了提供者，而有提供者，就要有消费者，不然提供者的存在就是没有意义的

上一章已经截图了创建模块的流程，所以之后就只写关键的步骤了

创建消费者订单模块

创建module

创建名为cloud-consumer-order80的maven工程。

修改POM.xml

<?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>springcloud</artifactId>
        <groupId>com.dance</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>cloud-consumer-order80</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.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>

创建application.yml

server:
  port: 80

新建主启动类

package com.dance.springcloud;

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);
    }
}

新建实体类

package com.dance.springcloud.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;
}

package com.dance.springcloud.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);
    }
}

新建控制层

package com.dance.springcloud.controller;

import com.dance.springcloud.entities.CommonResult;
import com.dance.springcloud.entities.Payment;
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.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;

@Slf4j
@RestController
public class OrderController {

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

    @Resource
    private RestTemplate restTemplate;

    @GetMapping("/consumer/payment/create")
    public CommonResult<Payment> create(Payment payment){

        return restTemplate.postForObject(PAYMENT_URL+"/payment/create", payment, CommonResult.class);
    }

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

新建RestTmplate配置类

package com.dance.springcloud.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.client.RestTemplate;

@Configuration
public class ApplicationContextConfig {

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

}

测试

运行cloud-consumer-order80与cloud-provider-payment8001两工程

浏览器 - http://localhost/consumer/payment/get/1

RestTemplate

RestTemplate提供了多种便捷访问远程Http服务的方法，是一种简单便捷的访问restful服务模板类，是Spring提供的用于访问Rest服务的客户端模板工具集

调用80创建接口创建一条数据

返回的是创建成功，但是发现数据库这条数据，的名字是空的，并没有传入值

解决办法，在loud-provider-payment8001工程的PaymentController中添加@RequestBody注解。

public class PaymentController
{

    @PostMapping(value = "/payment/create")
    public CommonResult create(@RequestBody/*添加到这里*/ Payment payment){
		...
    }
}

重启8001服务再次测试

查看数据库

添加成功

作者：彼岸舞
时间：2021\08\16
内容关于：Spring Cloud H版
本文属于作者原创,未经允许,禁止转发