SpringCloud(二) 服务注册到Eureka

本篇将完成一个可以注册到注册中心的最简单的服务。无论是服务提供者还是服务消费者，都可以在此项目基础上完善出来。

基础服务

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最基础的服务，只完成注册到注册中心。

1、pom.xml 文件

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 3     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 4     <modelVersion>4.0.0</modelVersion>
 5 
 6     <groupId>com.wei</groupId>
 7     <artifactId>CloudUserServer</artifactId>
 8     <version>0.0.1-SNAPSHOT</version>
 9     <packaging>jar</packaging>
10 
11     <name>CloudUserServer</name>
12     <description>Demo project for Spring Boot</description>
13 
14     <parent>
15         <groupId>org.springframework.boot</groupId>
16         <artifactId>spring-boot-starter-parent</artifactId>
17         <version>2.0.1.RELEASE</version>
18         <relativePath /> <!-- lookup parent from repository -->
19     </parent>
20 
21     <properties>
22         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
23         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
24         <java.version>1.8</java.version>
25         <spring-cloud.version>Finchley.M9</spring-cloud.version>
26     </properties>
27 
28     <dependencies>
29         <dependency>
30             <groupId>org.springframework.boot</groupId>
31             <artifactId>spring-boot-starter-web</artifactId>
32         </dependency>
33         <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-netflix-eureka-client -->
34         <dependency>
35             <groupId>org.springframework.cloud</groupId>
36             <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
37         </dependency>
38 
39         <dependency>
40             <groupId>org.springframework.boot</groupId>
41             <artifactId>spring-boot-starter-test</artifactId>
42             <scope>test</scope>
43         </dependency>
44     </dependencies>
45 
46     <dependencyManagement>
47         <dependencies>
48             <dependency>
49                 <groupId>org.springframework.cloud</groupId>
50                 <artifactId>spring-cloud-dependencies</artifactId>
51                 <version>${spring-cloud.version}</version>
52                 <type>pom</type>
53                 <scope>import</scope>
54             </dependency>
55         </dependencies>
56     </dependencyManagement>
57 
58     <build>
59         <plugins>
60             <plugin>
61                 <groupId>org.springframework.boot</groupId>
62                 <artifactId>spring-boot-maven-plugin</artifactId>
63             </plugin>
64         </plugins>
65     </build>
66 
67     <repositories>
68         <repository>
69             <id>spring-milestones</id>
70             <name>Spring Milestones</name>
71             <url>https://repo.spring.io/milestone</url>
72             <snapshots>
73                 <enabled>false</enabled>
74             </snapshots>
75         </repository>
76     </repositories>
77 
78 
79 </project>

2、配置文件

 1 spring.application.name=cloud-user-server
 2 
 3 server.port=9001
 4 
 5 eureka.client.service-url.defaultZone=http://localhost:9000/eureka/
 6 
 7 # 发送心跳的时间间隔(默认为30秒)
 8 eureka.instance.lease-renewal-interval-in-seconds=2
 9 # 自最后一次接收到心跳后等待时间(默认为90秒)
10 eureka.instance.lease-expiration-duration-in-seconds=5

3、启动类

 1 package com.wei;
 2 
 3 import org.springframework.boot.SpringApplication;
 4 import org.springframework.boot.autoconfigure.SpringBootApplication;
 5 import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
 6 
 7 @SpringBootApplication
 8 @EnableEurekaClient
 9 public class CloudUserServerApplication {
10 
11     public static void main(String[] args) {
12         SpringApplication.run(CloudUserServerApplication.class, args);
13     }
14 }

@EnableEurekaClient 注解，使项目成为可注册到eureka的服务，启动后就可以在eureka页面上看到服务cloud-user-server

 

至此，最简单，最纯粹的一个服务就注册到eureka了。