docker微服务部署之：一，搭建Eureka微服务项目

先说明一下docker需要搭建的微服务的基本情况：

• 项目情况：一个demo_parent项目，下面三个子模块：demo_eureka(eureka服务)、demo_article(文章服务）、demo_zuul(网关服务)。
• 用到的资源有：jdk1.8、mysql5.7。
• 需要用到的docker容器有：mysql(mysql单独一个容器）、jdk1.8(article、eureka、zuul三个服务运行在该jdk1.8容器中)

一，用idea新建父项目

File->New->Project->Maven,选择Project SDK为jdk8->GroupId:com.demo,ArtifactId:demo_parent

修改pom.xml文件，完整如下：

<?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>com.demo</groupId>
    <artifactId>demo_parent</artifactId>
    <packaging>pom</packaging>
    <version>1.0-SNAPSHOT</version>

    <!-- spring boot parent-->
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.0.RELEASE</version>
        <relativePath/>
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
        <lombok.version>1.16.10</lombok.version>
    </properties>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Finchley.M9</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
　　     <!-- 引入lombok依赖，可以在使用了@Data注解的类中，不用写getter和setter方法 -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>${lombok.version}</version>
        </dependency>
    </dependencies>

    <repositories>
        <repository>
            <id>spring-snapshots</id>
            <name>Spring Snapshots</name>
            <url>https://repo.spring.io/snapshot</url>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </repository>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>
    <pluginRepositories>
        <pluginRepository>
            <id>spring-snapshots</id>
            <name>Spring Snapshots</name>
            <url>https://repo.spring.io/snapshot</url>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </pluginRepository>
        <pluginRepository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </pluginRepository>
    </pluginRepositories>
</project>

二、新增demo_eureka模块,并编写代码

右键demo_parent->new->Module->Maven,选择Module SK为jdk8->ArtifactId:demo_eureka

1.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>demo_parent</artifactId>
        <groupId>com.demo</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>demo_eureka</artifactId>

    <dependencies>
        <!-- eureka 服务端依赖 -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
        </dependency>
    </dependencies>
</project>

2.在resources目录下新增application.yml文件

server:
  port: 7000 #eureka的启动端口，可自定义
spring:
  application:
    name: demo-eureka #eureka项目名称，可自定义
eureka:
  client:
    register-with-eureka: false
    fetch-registry: false
    service-url:
      defaultZone: http://127.0.0.1:${server.port}/eureka #在IDEA中运行时使用127.0.0.1，部署发布时，请修改为虚拟机宿主机的ip地址

注：由于这里讲的是单机部署，所以eureka的register-with-eureka和fetch-registry都设置为了false

3.新建com.demo.eureka包，并在该包下新建启动类EurekaApplication

package com.demo.eureka;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;

/**
 * 注册中心微服务
 */
// 标注为一个spring boot项目
@SpringBootApplication
// 标注为Eureka服务端
@EnableEurekaServer
public class EurekaApplication {
    public static void main(String[] args) {
        SpringApplication.run(EurekaApplication.class, args);
    }
}

4.右键EurekaApplication，点Run 'EurekaApplication'启动该demo-eureka项目

在浏览器输入localhost:7000，看到如上界面，表示项目启动成功。No instances available表示暂时还没有服务注册到eureka上来。

docker微服务部署之：二、搭建文章微服务项目