SpringBoot构建微服务实战 之 服务注册
SpringBoot构建微服务实战 之 服务注册
本节将以一个实际例子来学习一下使用SpringBoot+Zookeeper来构建微服务之服务的注册。
首先学习本文之前请先了解 SpringBoot整合Mybatis。
实例
创建一个合同(Contract)服务模块。
项目结构
pom.xml
<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>4.0.0modelVersion> <groupId>com.sstps.springBootgroupId> <artifactId>ContractartifactId> <version>0.0.1-SNAPSHOTversion> <packaging>jarpackaging> <properties> <project.build.sourceEncoding>UTF-8project.build.sourceEncoding> <Maven.compiler.source>1.8Maven.compiler.source> <Maven.compiler.target>1.8Maven.compiler.target> properties> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.bootgroupId> <artifactId>spring-boot-dependenciesartifactId> <version>1.5.8.RELEASEversion> <type>pomtype> <scope>importscope> dependency> dependencies> dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.bootgroupId> <artifactId>spring-boot-starter-jdbcartifactId> dependency> <dependency> <groupId>org.springframework.bootgroupId> <artifactId>spring-boot-starter-webartifactId> dependency> <dependency> <groupId>org.springframework.bootgroupId> <artifactId>spring-boot-starterartifactId> dependency> <dependency> <groupId>mysqlgroupId> <artifactId>mysql-connector-javaartifactId> <version>5.1.6version> dependency> <dependency> <groupId>org.mybatisgroupId> <artifactId>mybatisartifactId> <version>3.4.1version> dependency> <dependency> <groupId>org.mybatis.spring.bootgroupId> <artifactId>mybatis-spring-boot-starterartifactId> <version>1.3.0version> dependency> <dependency> <groupId>junitgroupId> <artifactId>junitartifactId> <scope>testscope> dependency> <dependency> <groupId>org.apache.curatorgroupId> <artifactId>curator-x-discovery-serverartifactId> <version>2.11.0version> dependency> <dependency> <groupId>org.springframework.bootgroupId> <artifactId>spring-boot-actuatorartifactId> dependency> dependencies> <build> <plugins> <plugin> <groupId>org.codehaus.mojogroupId> <artifactId>appassembler-maven-pluginartifactId> <version>1.10version> <configuration> <platforms> <platform>windowsplatform> <platform>unixplatform> platforms> <assembleDirectory>${project.build.directory}/marketassembleDirectory> <repositoryName>librepositoryName> <binFolder>binbinFolder> <configurationDirectory>confconfigurationDirectory> <copyConfigurationDirectory>truecopyConfigurationDirectory> <configurationSourceDirectory>src/main/resourcesconfigurationSourceDirectory> <repositoryLayout>flatrepositoryLayout> <encoding>UTF-8encoding> <logsDirectory>logslogsDirectory> <tempDirectory>tmptempDirectory> <programs> <program> <id>marketid> <mainClass>com.sstps.market.AppmainClass> <jvmSettings> <extraArguments> <extraArgument>-serverextraArgument> <extraArgument>-Xmx2GextraArgument> <extraArgument>-Xms2GextraArgument> extraArguments> jvmSettings> program> programs> configuration> plugin> plugins> build> project>ServiceRegistor.java
package com.sstps.market; import org.apache.curator.framework.CuratorFramework; import org.apache.curator.framework.CuratorFrameworkFactory; import org.apache.curator.retry.RetryOneTime; import org.apache.curator.x.discovery.ServiceDiscovery; import org.apache.curator.x.discovery.ServiceDiscoveryBuilder; import org.apache.curator.x.discovery.ServiceInstance; import org.springframework.beans.factory.annotation.Value; import org.springframework.boot.ApplicationArguments; import org.springframework.boot.ApplicationRunner; import org.springframework.stereotype.Component; @Component public class ServiceRegistor implements ApplicationRunner { @Value("${zookeeper.address}") private String registerAddress; @Value("${service.address}") private String serviceAddress; @Value("${service.port}") private Integer servicePort; public void run(ApplicationArguments args) throws Exception { //注册中心 CuratorFramework client = CuratorFrameworkFactory.newClient(registerAddress, new RetryOneTime(1000)); client.start(); client.blockUntilConnected(); //注册服务 ServiceInstance代码解读：使用 CuratorFramework 来实现服务的注册。Curator对Zookeeper JAVA API做了高度封装。
application.properties
spring.datasource.url=jdbc:mysql:///sstps_product?useSSL=false&serverTimezone=UTC spring.datasource.username=root spring.datasource.password=bai5331359 spring.datasource.tomcat.driver-class-name=com.mysql.jdbc.Driver spring.jackson.date-format=yyyy-MM-dd HH:mm:ss server.port=9090 zookeeper.address=192.168.100.19:2181 service.address=192.168.100.19 service.port=9090 management.security.enabled=false其他java代码就是基本SSM业务逻辑代码来实现增删改查的基本功能，这里就不展示了。核心代码在服务的注册。
App.java
package com.sstps.market; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.context.ConfigurableApplicationContext; import org.springframework.context.annotation.ComponentScan; import com.sstps.market.entity.Contract; import com.sstps.market.mapper.ContractMapper; @SpringBootApplication @ComponentScan("com.sstps.market") public class App { /** * 微服务， 把原来一个大的系统拆分成小的系统，每一小的系统 单独 开发。测试、维护 * * 常用的服务注册中心有： Zookeeper、consul、etcd、redis * 服务提供方需要在服务启动的时候把服务的信息注册到注册中心去(Zookeeper)。 * @param args */ public static void main(String[] args) { ConfigurableApplicationContext context = SpringApplication.run(App.class, args); context.getBean(ContractMapper.class); } }
创建一个市场模块(Market)
项目结构
application.properties
spring.datasource.url=jdbc:mysql:///sstps_product?useSSL=false&serverTimezone=UTC spring.datasource.username=root spring.datasource.password=bai5331359 spring.datasource.tomcat.driver-class-name=com.mysql.jdbc.Driver spring.jackson.date-format=yyyy-MM-dd HH:mm:ss zookeeper.address=192.168.100.19:2181 service.address=192.168.100.19 service.port=8080 management.security.enabled=falseServiceRegistor.java
package com.sstps.market; import org.apache.curator.framework.CuratorFramework; import org.apache.curator.framework.CuratorFrameworkFactory; import org.apache.curator.retry.RetryOneTime; import org.apache.curator.x.discovery.ServiceDiscovery; import org.apache.curator.x.discovery.ServiceDiscoveryBuilder; import org.apache.curator.x.discovery.ServiceInstance; import org.springframework.beans.factory.annotation.Value; import org.springframework.boot.ApplicationArguments; import org.springframework.boot.ApplicationRunner; import org.springframework.stereotype.Component; @Component public class ServiceRegistor implements ApplicationRunner { @Value("${zookeeper.address}") private String registerAddress; @Value("${service.address}") private String serviceAddress; @Value("${service.port}") private Integer servicePort; public void run(ApplicationArguments args) throws Exception { //注册中心 CuratorFramework client = CuratorFrameworkFactory.newClient(registerAddress, new RetryOneTime(1000)); client.start(); client.blockUntilConnected(); //注册服务 ServiceInstanceApp.java
package com.sstps.market; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.context.ConfigurableApplicationContext; import org.springframework.context.annotation.ComponentScan; import org.springframework.transaction.annotation.Transactional; import com.sstps.market.mapper.ProductMapper; @SpringBootApplication @ComponentScan("com.sstps.market") public class App { /** * 微服务， 把原来一个大的系统拆分成小的系统，每一小的系统 单独 开发。测试、维护 * * 常用的服务注册中心有： Zookeeper、consul、etcd、redis * 服务提供方需要在服务启动的时候把服务的信息注册到注册中心去(Zookeeper)。 * @param args */ public static void main(String[] args) { ConfigurableApplicationContext context = SpringApplication.run(App.class, args); context.getBean(ProductMapper.class); } }
开启Zookeeper服务(以windos OS 为例)
首先现在本安装一个Zookeeper的服务，关于zookeeper将在以后讲解，请关注本人csdn微博~Server
Client
启动Contract 和 Market两个服务，然后查看Zookeeper。
此时我们的服务边注册到了Zookeeper中去了。
小结
微服务的注册使用的是 Curator，当然你也可以使用ZClient等。因人而异。
服务的注册核心代码：
使用 CuratorFramework 来实现服务的注册因为 Curator 提供了更为高效简介易用的 JAVA API。
实现ApplicationRunner接口。该接口中的实现类的方法将在 SpringBoot 启动服务以后调用。