Spring Cloud 微服务搭之ribbon（一）

Spring Cloud 微服务搭建

（三）注册中心创建之Ribbon微服务之间的调用—product微服务
1、本猿demo的介绍。
本次demo，有三个服务：注册中心、产品服务、订单服务。
demo业务流程：订单服务得到前台给的用户id和产品id后，调用产品微服务的产品查找接口，获取到产品名。然后进行创建订单。

产品微服务搭建

1、配置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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.1.13.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<groupId>jacob.product</groupId>
	<artifactId>demo</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>product_demo</name>
	<description>Demo project for Spring Boot</description>

	<properties>
		<java.version>1.8</java.version>
		<spring-cloud.version>Greenwich.SR5</spring-cloud.version>
	</properties>

	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
	</dependencies>

	<dependencyManagement>
		<dependencies>
			<dependency>
				<groupId>org.springframework.cloud</groupId>
				<artifactId>spring-cloud-dependencies</artifactId>
				<version>${spring-cloud.version}</version>
				<type>pom</type>
				<scope>import</scope>
			</dependency>
		</dependencies>
	</dependencyManagement>

	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>

</project>

2、修改配置

server:
  port: 8080
#指定注册中心地址
eureka:
  client:
    serviceUrl:
      defaultZone: http://127.0.0.1:8761/eureka/
  instance:
    instance-id: ${spring.cloud.client.ip-address}:${server.port}
    prefer-ip-address: true
#服务的名称
spring:
  application:
    name: product-demo

3、编写启动类

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

@SpringBootApplication
public class DemoApplication {

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

}

4、编写controller

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import java.util.HashMap;
import java.util.Map;

@RestController
@RequestMapping("jacob/v1/product")
public class ProductController {
    private static  final Map<String,String> products = new HashMap<>();
    static {
        for(int i = 0 ; i < 10 ;i++){
            products.put(String.valueOf(i),String.valueOf(i*100));
        }
    }

    /**
     * 获取所有商品列表
     * @return
     */
    @RequestMapping("get")
    public Object list(@RequestParam("id") int id){
        return products.get(String.valueOf(id));
    }
}

5、启动测试

6、测试接口

订单微服务下篇博客：（三）注册中心创建之Ribbon微服务之间的调用—order微服务

这个太长了我看着烦