zookeeper實現微服務註冊
阿新 • • 發佈：2022-03-13
zookeeper實現微服務註冊
建立父工程
建立父工程，用於版本管理，修改pom檔案：設定打包型別為pom、設定依賴管理（src檔案可以刪除）
<packaging>pom</packaging> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <maven.compiler.source>1.8</maven.compiler.source> <maven.compiler.target>1.8</maven.compiler.target> <junit.version>4.12</junit.version> <log4j.version>1.2.17</log4j.version> <lombok.version>1.16.18</lombok.version> <mysql.version>5.1.47</mysql.version> <druid.version>1.1.16</druid.version> <mybatis.spring.boot.version>1.3.0</mybatis.spring.boot.version> </properties> <!-- 子模組繼承之後，提供作用:鎖定版本+子modlue不用寫groupId和version --> <dependencyManagement> <dependencies> <!--spring boot 2.2.2--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-dependencies</artifactId> <version>2.2.2.RELEASE</version> <type>pom</type> <scope>import</scope> </dependency> <!--spring cloud Hoxton.SR1--> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>Hoxton.SR1</version> <type>pom</type> <scope>import</scope> </dependency> <!--spring cloud alibaba 2.1.0.RELEASE--> <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-alibaba-dependencies</artifactId> <version>2.1.0.RELEASE</version> <type>pom</type> <scope>import</scope> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>${mysql.version}</version> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>${druid.version}</version> </dependency> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>${mybatis.spring.boot.version}</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>${junit.version}</version> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>${log4j.version}</version> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>${lombok.version}</version> <optional>true</optional> </dependency> </dependencies> </dependencyManagement> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <version>2.3.4.RELEASE</version> <configuration> <fork>true</fork> <addResources>true</addResources> </configuration> </plugin> </plugins> </build>
建立子專案
建立子專案依賴父工程，匯入依賴
注意，這裡有個坑：spring-cloud-starter-zookeeper-discovery依賴中自帶了zookeeper依賴，如果該依賴版本和伺服器安裝的zookeeper版本不一致就會產生衝突
解決方法：在spring-cloud-starter-zookeeper-discovery中排除自帶的zookeeper版本，然後再匯入和伺服器版本一致的zookeeper依賴，我的伺服器安裝的是3.5.7版本的zookeeper，所以匯入的zookeeper依賴版本也是3.5.7
<dependencies> <!-- SpringBoot整合Web元件 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency><!-- 引入自己定義的api通用包，可以使用Payment支付Entity --> <groupId>com.yl</groupId> <artifactId>common-api</artifactId> <version>${project.version}</version> </dependency> <!-- SpringBoot整合zookeeper客戶端 --> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-zookeeper-discovery</artifactId> <version>2.2.1.RELEASE</version> <!--先排除自帶的zookeeper版本--> <exclusions> <exclusion> <groupId>org.apache.zookeeper</groupId> <artifactId>zookeeper</artifactId> </exclusion> </exclusions> </dependency> <!--新增zookeeper版本(保持和伺服器zookeeper版本一致)--> <dependency> <groupId>org.apache.zookeeper</groupId> <artifactId>zookeeper</artifactId> <version>3.5.7</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <scope>runtime</scope> <optional>true</optional> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <optional>true</optional> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies>
修改配置檔案
server:
port: 8003
spring:
application:
name: payment
cloud:
zookeeper:
# zookeeper服務URL
connect-string: 192.168.84.136:2181
主啟動類新增@EnableDiscoveryClient註解
package com.yl.payment; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.client.discovery.EnableDiscoveryClient; @SpringBootApplication @EnableDiscoveryClient public class Payment8003Application { public static void main(String[] args) { SpringApplication.run(Payment8003Application.class,args); } }
專案配置完成，啟動zookeeper（關閉伺服器防火牆，使得本機能夠ping通伺服器），然後再啟動專案
進入zookeeper客戶端，檢視節點，可以看到除了根節點還有一個services節點
[zk: localhost:2181(CONNECTED) 0] ls /
[services, zookeeper]
檢視services節點，可以看到服務成功註冊到zookeeper
[zk: localhost:2181(CONNECTED) 1] ls /services
[payment]
服務節點之下還有一個節點，該節點儲存了服務相關資訊，通過get命令可以檢視該資訊
[zk: localhost:2181(CONNECTED) 2] ls /services/payment
[06af6b61-9271-49d9-9274-71b36cd0925e]
[zk: localhost:2181(CONNECTED) 3] ls /services/payment/06af6b61-9271-49d9-9274-71b36cd0925e
[]
[zk: localhost:2181(CONNECTED) 4] get /services/payment/06af6b61-9271-49d9-9274-71b36cd0925e
{"name":"payment","id":"06af6b61-9271-49d9-9274-71b36cd0925e","address":"DESKTOP-GBI6726.mshome.net","port":8003,"sslPort":null,"payload":{"@class":"org.springframework.cloud.zookeeper.discovery.ZookeeperInstance","id":"application-1","name":"payment","metadata":{}},"registrationTimeUTC":1647145928099,"serviceType":"DYNAMIC","uriSpec":{"parts":[{"value":"scheme","variable":true},{"value":"://","variable":false},{"value":"address","variable":true},{"value":":","variable":false},{"value":"port","variable":true}]}}