1.使用application.properties

1.提供者

1.1提供者的application.properties

server.port=8080
# 提供者名称，唯一
dubbo.application.name=boot-provider
# 配置注册中心
dubbo.registry.address=127.0.0.1:2181
dubbo.registry.protocol=zookeeper
# 配置协议以及端口
dubbo.protocol.name=dubbo
dubbo.protocol.port=20880
# 配置超时时间，默认为1000ms
dubbo.registry.timeout=5000
# 配置如果连接断开时，要重连次数，不包含第一次连接,0代表不重尝试连接
dubbo.provider.retries=3
# 配置监控中心要监控的地址，监控注册中心的地址
dubbo.monitor.address=registry

1.2暴露服务

1.3主程序

2.消费者

2.1消费者的application.properties

server.port=8081
# 消费者名称，唯一
dubbo.application.name=boot-consumer
# 配置注册中心
dubbo.registry.address=zookeeper://127.0.0.1:2181
# 配置超时时间，默认为1000ms
dubbo.registry.timeout=5000
# 配置如果连接断开时，要重连次数，不包含第一次连接，0代表不重尝试连接
dubbo.consumer.retries=3
# 配置监控中心要监控的地址
dubbo.monitor.address=registry

2.2调用远程服务

package com.yl.bootconsumer.controller;

import com.alibaba.dubbo.config.annotation.Reference;
import com.yl.bootinterface.model.Student;
import com.yl.bootinterface.service.StudentService;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class StudentController {

    @Reference //引用远程服务
    StudentService studentService;
    @GetMapping("/getStudentById")
    public Student getStudentById(Integer id) {
        return studentService.getStudentById(id);
    }
}

2.3主程序

2.使用dubbo.xml

1.提供者

1.1application.properties

1.2dubbo-provider.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
       xmlns:dubbbo="http://code.alibabatech.com/schema/dubbo"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">

    <!--声明提供者名称-->
    <dubbo:application name="boot-provider"/>
    <!--指定协议以及端口号-->
    <dubbbo:protocol name="dubbo" port="20880"/>
    <!--指定注册中心-->
    <dubbo:registry address="zookeeper://localhost:2181"/>
    <!--暴露服务-->
    <dubbo:service interface="com.yl.bootinterface.service.StudentService" ref="studentServiceImpl" version="0.0.1" timeout="5000">
        <dubbo:method name="getStudentById" timeout="2000"/>
    </dubbo:service>

    <!--加载实现类-->
    <bean id="studentServiceImpl" class="com.yl.bootprovider.service.impl.StudentServiceImpl"/>
</beans>

1.3接口实现类

1.4主程序

2.消费者

1.1application.properties

1.2dubbo-consumer.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">

    <!--指定消费者名称-->
    <dubbo:application name="boot-consumer"/>
    <!--指定注册中心-->
    <dubbo:registry address="zookeeper://localhost:2181"/>
    <!--引用远程服务接口-->
    <dubbo:reference id="studentService" interface="com.yl.bootinterface.service.StudentService" version="0.0.1"/>
</beans>

1.3调用服务

1.4主程序

3.使用注解配置

1.提供者

1.1提供一个配置类

package com.yl.bootprovider.config;

import com.alibaba.dubbo.config.*;
import com.yl.bootinterface.service.StudentService;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.ArrayList;
import java.util.List;

@Configuration
public class DubboConfig {

    // 配置应用
    @Bean
    public ApplicationConfig applicationConfig() {
        ApplicationConfig applicationConfig = new ApplicationConfig();
        applicationConfig.setName("boot-provider");
        return applicationConfig;
    }

     //配置注册中心
    @Bean
    public RegistryConfig registryConfig() {
        RegistryConfig registryConfig = new RegistryConfig();
        registryConfig.setProtocol("zookeeper");
        registryConfig.setAddress("127.0.0.1:2181");
        return registryConfig;
    }

    //配置协议
    @Bean
    public ProtocolConfig protocolConfig() {
        ProtocolConfig protocolConfig = new ProtocolConfig();
        protocolConfig.setName("dubbo");
        protocolConfig.setPort(20880);
        return protocolConfig;
    }

    //暴露服务
    @Bean
    public ServiceConfig<StudentService> studentServiceServiceConfig(StudentService studentService) {
        ServiceConfig<StudentService> serviceConfig = new ServiceConfig<>();
        serviceConfig.setInterface(StudentService.class);
        serviceConfig.setRef(studentService);
        serviceConfig.setVersion("0.0.1");
        //方法的具体配置
        List<MethodConfig> list = new ArrayList<>();
        MethodConfig methodConfig = new MethodConfig();
        methodConfig.setName("getStudentById");
        methodConfig.setTimeout(2000);
        list.add(methodConfig);
        serviceConfig.setMethods(list);
        return serviceConfig;
    }
}

2.要暴露的接口服务实现类

1.3 主程序

2.消费者

2.1提供一个配置类

package com.yl.bootconsumer.config;

import com.alibaba.dubbo.config.*;
import com.yl.bootinterface.service.StudentService;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.ArrayList;
import java.util.List;

@Configuration
public class DubboConfig {

    // 配置应用
    @Bean
    public ApplicationConfig applicationConfig() {
        ApplicationConfig applicationConfig = new ApplicationConfig();
        applicationConfig.setName("boot-consumer");
        return applicationConfig;
    }

     //配置注册中心
    @Bean
    public RegistryConfig registryConfig() {
        RegistryConfig registryConfig = new RegistryConfig();
        registryConfig.setProtocol("zookeeper");
        registryConfig.setAddress("127.0.0.1:2181");
        return registryConfig;
    }

    //配置协议
    @Bean
    public ProtocolConfig protocolConfig() {
        ProtocolConfig protocolConfig = new ProtocolConfig();
        protocolConfig.setName("dubbo");
        protocolConfig.setPort(20880);
        return protocolConfig;
    }

}

2.2.主程序

2.3调用远程服务