spring-cloud入门-idea中创建cloud服务中心

发表于 | 分类于

必看提示以及声明：

请合理选择适合自己使用的方式,因个人原因产生的问题,均与博主无关

大致流程

1：确认环境

2：开发工具创建项目(博主idea)

3：配置并启动
图片暂无

准备

1：maven

2：idea

具体流程

1：打开终端并运行以下命令以确保您已安装了idea和Maven的有效版本

2：打开idea，选择file->new->project->Spring Initializr,在弹出页面填写信息，默认就好，然后选择Cloud Discovery->Eureka server,最后finish

3：在com.virtual.maincloud 下启动类**Application,代码如下

package com.virtual.maincloud;

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

@EnableEurekaServer
@SpringBootApplication
public class MainCloudApplication {

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

4：在application.properties中配置如下：

#提供服务端口
server.port=1111
#提供服务的域名，本地可以使用localhost或者配置hosts测试
eureka.instance.hostname=localhost
#关闭向注册中心注册自己
eureka.client.register-with-eureka=false
#关闭发现注册服务，注册中心仅用于维护节点
eureka.client.fetch-registry=false
#配置注册中心提供服务的url（这里引用上边的配置）
eureka.client.serviceUrl.defaultZone=http://${eureka.instance.hostname}:${server.port}/eureka/

5：最后修改pom文件
按照步骤通过idea 创建的pom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.virtual</groupId>
    <artifactId>main-cloud</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>main-cloud</name>
    <description>Demo project for Spring Cloud</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.4.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
        <spring-cloud.version>Finchley.SR1</spring-cloud.version>
    </properties>

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

修改为 如下pom内容

<?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.virtual</groupId>
    <artifactId>main-cloud</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>main-cloud</name>
    <description>Demo project for Spring Cloud</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.3.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
        <spring-cloud.version>Dalston.RC1</spring-cloud.version>

<!--
        <spring-cloud.version>Finchley.SR1</spring-cloud.version>
-->
    </properties>

    <dependencies>
    <!--    <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
        </dependency>-->
        <!--eureka server -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka-server</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</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>

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

6：最后在启动类MainCloudApplication右键启动，访问配置的地址：http://localhost:1111
即可看到spring Eureka 页面

碰到的问题以及解决方法

1:关于SpringBoot版本不建议大于等于2.0版本，百度说是2.0改动比较大，创建有问题，确实我也碰到了，
启动后访问页面直接报错了.

2:关于pom文件还有挺多坑的
选择cloud创建的pom中

org.springframework.cloud
spring-cloud-starter-netflix-eureka-server

这个引入默认创建应该都包含了，但是你直接启动却无法启动，
还有最后spring-milestones这个不会知道起到了什么作用，
删了他启动项注解什么的都报错了

参考文章

https://www.cnblogs.com/chry/p/7248947.html
https://www.jb51.net/article/138554.htm