SpringCloud之eureka服务注册和服务发现

　服务注册中心 ：eureka-server

　　　　作用：服务注册中心提供服务注册功能

　服务提供方：eureka-client

　　　　作用：注册服务到服务注册中心

服务注册中心 ：eureka-server

  1. 创建 一个Spring-Boot 项目(在springboot项目中添加 jar包 依赖)
 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>cn.wh</groupId>
 7     <artifactId>firsttest</artifactId>
 8     <version>0.0.1-SNAPSHOT</version>
 9     <packaging>jar</packaging>
10 
11     <name>firsttest</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>2.0.4.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.SR1</spring-cloud.version>
26     </properties>
27 
28     <dependencies>
29         <dependency>
30             <groupId>org.springframework.cloud</groupId>
31             <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
32         </dependency>
33 
34         <dependency>
35             <groupId>org.springframework.boot</groupId>
36             <artifactId>spring-boot-starter-test</artifactId>
37             <scope>test</scope>
38         </dependency>
39     </dependencies>
40 
41     <dependencyManagement>
42         <dependencies>
43             <dependency>
44                 <groupId>org.springframework.cloud</groupId>
45                 <artifactId>spring-cloud-dependencies</artifactId>
46                 <version>${spring-cloud.version}</version>
47                 <type>pom</type>
48                 <scope>import</scope>
49             </dependency>
50         </dependencies>
51     </dependencyManagement>
52 
53     <build>
54         <plugins>
55             <plugin>
56                 <groupId>org.springframework.boot</groupId>
57                 <artifactId>spring-boot-maven-plugin</artifactId>
58             </plugin>
59         </plugins>
60     </build>
61 
62 
63 </project>
Pom文件

　　2. 在springboot 的核心类上 加上 @EnableEurekaServer

配置核心配置文件

 1 #端口号
 2 server.port= 8082
 3 eureka.instance.hostname= localhost
 4 ##false来表明自己是一个eureka server
 5 eureka.client.reg   ister-with-eureka=false  
 6 ##false来表明自己是一个eureka server
 7 eureka.client.fetch-registry=false
 8 eureka.client.service-url.defaultZone= http://${eureka.instance.hostname}:${server.port}/eureka/
 9 #关闭springboot自带的ioc
10 spring.mvc.favicon.enabled = false
配置信息

启动我们的项目访问我们的端口号

这个页面就是我们的注册中心

增加一个客户端 对注册中心进行注册

 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>cn.wh</groupId>
 7     <artifactId>firsttest</artifactId>
 8     <version>0.0.1-SNAPSHOT</version>
 9     <packaging>jar</packaging>
10 
11     <name>firsttest</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>2.0.4.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.SR1</spring-cloud.version>
26     </properties>
27 
28     <dependencies>
29         <dependency>
30             <groupId>org.springframework.cloud</groupId>
31             <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
32         </dependency>
33 
34         <dependency>
35             <groupId>org.springframework.boot</groupId>
36             <artifactId>spring-boot-starter-test</artifactId>
37             <scope>test</scope>
38         </dependency>
39     </dependencies>
40 
41     <dependencyManagement>
42         <dependencies>
43             <dependency>
44                 <groupId>org.springframework.cloud</groupId>
45                 <artifactId>spring-cloud-dependencies</artifactId>
46                 <version>${spring-cloud.version}</version>
47                 <type>pom</type>
48                 <scope>import</scope>
49             </dependency>
50         </dependencies>
51     </dependencyManagement>
52 
53     <build>
54         <plugins>
55             <plugin>
56                 <groupId>org.springframework.boot</groupId>
57                 <artifactId>spring-boot-maven-plugin</artifactId>
58             </plugin>
59         </plugins>
60     </build>
61 
62 
63 </project>
POM 文件

客户端的核心配置

1 eureka.client.service-url.defaultZone= http://localhost:8082/eureka/
2 server.port= 8084
3 spring.application.name= service-hi
核心代码

在客户端中 使用注解标明这是一个客户端 为下面的负载均衡 做铺垫

客户端和 注册中心同时启动

在注册中心 可以看到 自己配置的客户端已经 成功注册

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原文地址：https://www.cnblogs.com/wh1520577322/p/9661749.html