1 Create the parent project

Described previously, in order for the spring boot 2.1.7.RELEASE group, spring cloud version Greenwich.SR2, spring cloud alibaba version 2.1.0.RELEASE. Follow-up on this version are referring to, not repeat them.

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>2.1.7.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <groupId>com.luas.cloud</groupId>
    <artifactId>java-boot-parent-2.1</artifactId>
    <version>1.0.0-SNAPSHOT</version>
    <packaging>pom</packaging>

    <name>java-boot-parent-2.1</name>
    <description>Spring Cloud Learning, parent project by spring boot 2.1.x</description>

    <properties>
        <java.version>1.8</java.version>
        <hutool.version>4.6.13</hutool.version>
        <spring-cloud.version>Greenwich.SR2</spring-cloud.version>
        <spring-cloud-alibaba.version>2.1.0.RELEASE</spring-cloud-alibaba.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
        </dependency>

    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>cn.hutool</groupId>
                <artifactId>hutool-all</artifactId>
                <version>${hutool.version}</version>
            </dependency>

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

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

</project>

2 Create Product Engineering

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>com.luas.cloud</groupId>
        <artifactId>java-boot-parent-2.1</artifactId>
        <version>1.0.0-SNAPSHOT</version>
        <relativePath>../../java-boot-parent-2.1</relativePath>
    </parent>

    <groupId>com.luas.cloud</groupId>
    <artifactId>xmall-product</artifactId>
    <version>1.0.0-SNAPSHOT</version>

    <name>xmall-product</name>
    <description>Spring Cloud Learning,nacos-client</description>

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

        <!-- nacos cloud -->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>

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

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

</project>

Note that the parent project is one step on the parent project created special attention to relativePath, better to specify special, you need to deploy to the parent project maven PW, sub-projects in order to properly cited.

application configuration

server:
  port: 8080

spring:
  application:
    name: xmall-product
  cloud:
    nacos:
      discovery:
        server-addr: 127.0.0.1:8848

Note, spring.application.name as xmall-product service service name after nacos registered, the service name is very important, whether through feign follow-up call or rest is called, requires this name.

Goods Services

package com.luas.cloud.controller;

import cn.hutool.core.map.MapUtil;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/sku")
public class SkuController {

    @RequestMapping("/{skuId}")
    public Object get(@PathVariable("skuId") String skuId) {
        return MapUtil.<String, Object>builder()
                .put("skuId", skuId)
                .put("name", "笔记本电脑")
                .put("price", 1199.00)
                .build();
    }

}

Startup class

package com.luas.cloud;

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

@SpringBootApplication
public class XmallProductApplication {

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

}

About @EnableDiscoveryClient comment here does not add, but normal service was still able to register to nacos. What causes it? See the following two pieces of code can be understood: