Spring-Cloud之Eureka排坑之旅
阿新 • • 發佈:2018-11-16
1 快速demo
1.0 環境說明
Intelli IDEA+Spring Boot
1.1 新建工程chap52(通過New Project->Spring Initializer->web)
修改pom檔案:
<groupId>com.chen4du</groupId> <artifactId>chap52</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>pom</packaging> <name>chap52</name> <description>Demo project for Spring Boot</description> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.2.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.SR1</spring-cloud.version> </properties> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>${spring-cloud.version}</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement>
1.2 新建module:eurekaserver(通過New Project->Spring Initializer->web),修改pom檔案
<parent> <groupId>com.chen4du</groupId> <artifactId>chap52</artifactId> <version>0.0.1-SNAPSHOT</version> <relativePath/> <!-- lookup parent from repository --> </parent> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-eureka-server</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies>
新增application.yml檔案
server:
port: 8761
eureka:
instance:
hostname: localhost
client:
registerWithEureka: false
fetchRegistry: false
serviceUrl:
defaultZone:
http://${eureka.instance.hostname}:${server.port}/eureka/
為EurekaserverApplication檔案添加註解
@EnableEurekaServer @SpringBootApplication public class EurekaserverApplication { public static void main(String[] args) { SpringApplication.run(EurekaserverApplication.class, args); } }
1.3 新建module:eurekaclient(通過New Project->Spring Initializer->web),修改pom檔案
<parent>
<groupId>com.chen4du</groupId>
<artifactId>chap52</artifactId>
<version>0.0.1-SNAPSHOT</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>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka</artifactId>
</dependency>
<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>
</dependencies>
新增檔案bootstrap.yml
eureka:
client:
serviceUrl:
defaultZopne: http://localhost:8761/eureka/
server:
port: 8762
spring:
application:
name: eureka-client
為EurekaclientApplication添加註解
@SpringBootApplication
@EnableEurekaClient
public class EurekaclientApplication {
public static void main(String[] args) {
SpringApplication.run(EurekaclientApplication.class, args);
}
}
1.4 除錯
執行EurekaserverApplication,訪問http:localhost:8761
執行EurekaclientApplication,訪問http:localhost:8761 可以看到服務已註冊
2 排坑之旅
2.1 註解新增無效
開始以為是包之間衝突,各種調版本,後來發現是因為chap52的pom檔案中打包方式有誤,預設是jar,要改成pom,後續子模組才能依賴到父模組的包
2.2 yml檔案格式
注意value和key之間有個空格,勿丟。