【分布式】整合Dubbo和Zookeeper

首先用docker拉取zookeeper镜像，并运行容器：

docker pull zookeeper docker run --name zk01 -p 2181:2181 --restart always -d zookeeper

1、将服务提供者注册到注册中心：

引入dubbo相关依赖。配置dubbo的扫描包和注册中心地址。使用@Service发布服务。

2、将服务消费者注册到注册中心：

引入依赖。配置dubbo的注册中心地址。引用服务。

首先需要创建一个项目其中包含两个模块：

provider-ticket

pom.xml

<?xml version="1.0" encoding="UTF-8"?> <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 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.qublog</groupId> <artifactId>provider-ticket</artifactId> <version>0.0.1-SNAPSHOT</version> <name>provider-ticket</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <spring-boot.version>2.3.0.RELEASE</spring-boot.version> </properties> <dependencies> <dependency> <groupId>org.apache.dubbo</groupId> <artifactId>dubbo-spring-boot-starter</artifactId> <version>2.7.3</version> </dependency> <dependency> <groupId>org.apache.curator</groupId> <artifactId>curator-recipes</artifactId> <version>2.13.0</version> </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> <exclusions> <exclusion> <groupId>org.junit.vintage</groupId> <artifactId>junit-vintage-engine</artifactId> </exclusion> </exclusions> </dependency> </dependencies> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-dependencies</artifactId> <version>${spring-boot.version}</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <configuration> <source>1.8</source> <target>1.8</target> <encoding>UTF-8</encoding> </configuration> </plugin> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>

application.properties

dubbo.application.name=provider-ticket dubbo.registry.address=zookeeper://192.168.30.128:2181 dubbo.scan.base-packages=com.qublog.providerticket.service

TicketService接口：

package com.qublog.providerticket.service; public interface TicketService { public String getTicket(); }

TicketServiceImpl类：

package com.qublog.providerticket.service; import org.apache.dubbo.config.annotation.Service; import org.springframework.stereotype.Component; //将服务发布出去 @Component @Service public class TicketServiceImpl implements TicketService { @Override public String getTicket() { return "<movie>"; } }

ProviderTicketApplication类：

package com.qublog.providerticket; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication public class ProviderTicketApplication { public static void main(String[] args) { SpringApplication.run(ProviderTicketApplication.class, args); } }

consumer-user

pom.xml

<?xml version="1.0" encoding="UTF-8"?> <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 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.qublog</groupId> <artifactId>consumer-user</artifactId> <version>0.0.1-SNAPSHOT</version> <name>consumer-user</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <spring-boot.version>2.3.0.RELEASE</spring-boot.version> </properties> <dependencies> <dependency> <groupId>org.apache.dubbo</groupId> <artifactId>dubbo-spring-boot-starter</artifactId> <version>2.7.3</version> </dependency> <dependency> <groupId>org.apache.curator</groupId> <artifactId>curator-recipes</artifactId> <version>2.13.0</version> </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> <exclusions> <exclusion> <groupId>org.junit.vintage</groupId> <artifactId>junit-vintage-engine</artifactId> </exclusion> </exclusions> </dependency> </dependencies> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-dependencies</artifactId> <version>${spring-boot.version}</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <configuration> <source>1.8</source> <target>1.8</target> <encoding>UTF-8</encoding> </configuration> </plugin> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>

application.properties

dubbo.application.name=consumer-user dubbo.registry.address=zookeeper://192.168.30.128:2181

TicketService接口：

package com.qublog.providerticket.service; public interface TicketService { public String getTicket(); }

UserService类：

package com.qublog.consumeruser.service; import com.qublog.providerticket.service.TicketService; import org.apache.dubbo.config.annotation.Reference; import org.springframework.stereotype.Service; @Service public class UserService { @Reference TicketService ticketService; public void hello() { String ticket = ticketService.getTicket(); System.out.println("买到票了："+ticket); } }

ConsumerUserApplication类：

package com.qublog.consumeruser; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication public class ConsumerUserApplication { public static void main(String[] args) { SpringApplication.run(ConsumerUserApplication.class, args); } }

ConsumerUserApplicationTests类：

package com.qublog.consumeruser; import com.qublog.consumeruser.service.UserService; import org.junit.jupiter.api.Test; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.test.context.SpringBootTest; @SpringBootTest class ConsumerUserApplicationTests { @Autowired UserService userService; @Test void contextLoads() { userService.hello(); } }

运行了服务提供方之后，运行服务消费方测试：