1.文档参照
dubbo配置官方文档
2.三个工程
2.1 公共接口工程
参考这篇文章:SpringBoot整合Dubbo的第一种方式
2.2 服务提供者
首先我们注释掉配置文件中的相关内容,只留下应用名(不留也可以)。
spring.application.name=boot-user-service-provider
#dubbo.application.name=boot-user-service-provider
#
#dubbo.scan.base-packages=com.szh.service.impl
#
#dubbo.registry.address=127.0.0.1:2181
#dubbo.registry.protocol=zookeeper
#
#dubbo.protocol.name=dubbo
#dubbo.protocol.port=20880
#
#dubbo.monitor.protocol=registry
下面我们编写核心的xml配置文件(不仅让我回想起以前学spring的时候啊,哈哈哈)
<?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://dubbo.apache.org/schema/dubbo" xmlns:dubb="http://code.alibabatech.com/schema/dubbo"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://dubbo.apache.org/schema/dubbo
http://dubbo.apache.org/schema/dubbo/dubbo.xsd http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
<!-- 1、指定当前服务/应用的名字(同样的服务名字相同,不要和别的服务同名) -->
<dubbo:application name="boot-user-service-provider"></dubbo:application>
<!-- 2、指定注册中心的位置 -->
<!-- <dubb:registry address="zookeeper://127.0.0.1:2181"></dubb:registry>-->
<dubbo:registry protocol="zookeeper" address="127.0.0.1:2181"></dubbo:registry>
<!-- 3、指定通信规则(通信协议?通信端口) -->
<dubbo:protocol name="dubbo" port="20880"></dubbo:protocol>
<!-- 4、暴露服务,ref:指向服务的真正的实现对象 -->
<dubbo:service interface="com.szh.gmall.service.UserService" ref="userServiceImpl" version="1.0.0"></dubbo:service>
<!-- 服务的具体实现 -->
<bean id="userServiceImpl" class="com.szh.service.impl.UserServiceImpl"></bean>
<bean id="userServiceImpl2" class="com.szh.service.impl.UserServiceImpl2"></bean>
</beans>
由于这里的dubbo配置都在上面的xml中实现了,所以下面的实现类中 @DubboService 注解就可以注释掉了。
package com.szh.service.impl;
import com.szh.gmall.bean.UserAddress;
import com.szh.gmall.service.UserService;
import org.apache.dubbo.config.annotation.DubboService;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.TimeUnit;
/**
* 1.将服务提供者注册到注册中心
* 1) 引入dubbo依赖、zookeeper客户端依赖
* 2) 配置服务提供者
* 2.让服务消费者从注册中心订阅服务提供者的相关服务
*/
@Service
//@DubboService(interfaceClass = UserService.class, version = "1.0.0")
public class UserServiceImpl implements UserService {
//The default value of ${dubbo.application.name} is ${spring.application.name}
@Value("${spring.application.name}")
private String applicationName;
@Override
public List<UserAddress> getUserAddressList(String userId) {
UserAddress userAddress1 = new UserAddress(1, "浙江省杭州市", "1", "张三", "123456", "Y");
UserAddress userAddress2 = new UserAddress(2, "湖北省武汉市", "1", "李四", "999999", "N");
try {
TimeUnit.MILLISECONDS.sleep(2000); //测试timeout
// TimeUnit.MILLISECONDS.sleep(4000); //测试重试次数
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println(applicationName + " old....");
return Arrays.asList(userAddress1, userAddress2);
}
}
package com.szh.service.impl;
import com.szh.gmall.bean.UserAddress;
import com.szh.gmall.service.UserService;
import org.apache.dubbo.config.annotation.DubboService;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.TimeUnit;
/**
* 1.将服务提供者注册到注册中心
* 1) 引入dubbo依赖、zookeeper客户端依赖
* 2) 配置服务提供者
* 2.让服务消费者从注册中心订阅服务提供者的相关服务
*/
@Service
//@DubboService(interfaceClass = UserService.class, version = "2.0.0")
public class UserServiceImpl2 implements UserService {
//The default value of ${dubbo.application.name} is ${spring.application.name}
@Value("${spring.application.name}")
private String applicationName;
@Override
public List<UserAddress> getUserAddressList(String userId) {
UserAddress userAddress1 = new UserAddress(1, "浙江省杭州市", "1", "张三", "123456", "Y");
UserAddress userAddress2 = new UserAddress(2, "湖北省武汉市", "1", "李四", "999999", "N");
try {
TimeUnit.MILLISECONDS.sleep(2000); //测试timeout
// TimeUnit.MILLISECONDS.sleep(4000); //测试重试次数
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println(applicationName + " new....");
return Arrays.asList(userAddress1, userAddress2);
}
}
主启动类上添加 @ImportResource 注解,要加载类路径下的某个xml配置文件。
package com.szh;
import org.apache.dubbo.config.spring.context.annotation.EnableDubbo;
import org.apache.dubbo.config.spring.context.annotation.EnableDubboConfig;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ImportResource;
@SpringBootApplication
//@EnableDubbo(scanBasePackages = "com.szh")
@ImportResource(locations = "classpath:provider.xml")
public class BootUserServiceProviderApplication {
public static void main(String[] args) {
SpringApplication.run(BootUserServiceProviderApplication.class, args);
}
}
2.3 服务消费者
首先我们注释掉配置文件中的相关内容,只留下应用名(不留也可以)、端口号最好留下,因为服务提供者启动之后会占用8080,这里将服务消费者声明在8081端口启动。
server.port=8081
spring.application.name=boot-order-service-consumer
#dubbo.application.name=boot-order-service-consumer
#
#dubbo.registry.address=zookeeper://127.0.0.1:2181
#dubbo.monitor.protocol=registry
package com.szh.controller;
import com.szh.gmall.bean.UserAddress;
import com.szh.gmall.service.OrderService;
import org.apache.dubbo.config.annotation.DubboReference;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import java.util.List;
/**
*
*/
@RestController
public class OrderController {
@Autowired
private OrderService orderService;
@GetMapping(value = "/initOrder/{userId}")
public List<UserAddress> initOrder(@PathVariable("userId") String userId) {
return orderService.initOrder2(userId);
}
}
package com.szh.service.impl;
import com.szh.gmall.bean.UserAddress;
import com.szh.gmall.service.OrderService;
import com.szh.gmall.service.UserService;
import org.apache.dubbo.config.annotation.DubboReference;
import org.apache.dubbo.config.annotation.Method;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
/**
*
*/
@Service
public class OrderServiceImpl implements OrderService {
// @DubboReference(interfaceClass = UserService.class, //服务接口名
// version = "1.0.0", //服务版本,与服务提供者的版本一致
// check = false, //启动时检查提供者是否存在,true报错,false忽略
// timeout = 3000, //服务方法调用超时时间(毫秒)
// methods = @Method(name = "getUserAddressList"), //精确到服务接口的某个方法
// retries = 3) //远程服务调用重试次数,不包括第一次调用,不需要重试请设为0
@Autowired
private UserService userService;
@Override
public void initOrder(String userId) {
}
@Override
public List<UserAddress> initOrder2(String userId) {
System.out.println("用户id:" + userId);
List<UserAddress> addressList = userService.getUserAddressList(userId);
return addressList;
}
}
下面是核心的xml配置文件。
<?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://dubbo.apache.org/schema/dubbo" xmlns:dubb="http://code.alibabatech.com/schema/dubbo"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://dubbo.apache.org/schema/dubbo
http://dubbo.apache.org/schema/dubbo/dubbo.xsd http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<context:component-scan base-package="com.szh"></context:component-scan>
<dubbo:application name="boot-order-service-consumer"></dubbo:application>
<dubbo:registry address="zookeeper://127.0.0.1:2181"></dubbo:registry>
<!-- 声明需要调用的远程服务的接口,生成远程服务代理 -->
<dubbo:reference interface="com.szh.gmall.service.UserService" id="userServiceImpl" version="1.0.0" check="false" timeout = "3000">
<dubbo:method name="getUserAddressList"></dubbo:method>
</dubbo:reference>
</beans>
package com.szh;
import org.apache.dubbo.config.spring.context.annotation.EnableDubbo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ImportResource;
@SpringBootApplication
//@EnableDubbo(scanBasePackages = "com.szh")
@ImportResource(locations = "classpath:consumer.xml")
public class BootOrderServiceConsumerApplication {
public static void main(String[] args) {
SpringApplication.run(BootOrderServiceConsumerApplication.class, args);
}
}
3.启动测试
启动服务提供者和消费者之前,要先将zookeeper开启,然后再将dubbo管控台打开。
我这里为了方便,就直接在windows下启动zookeeper了,dubbo管控台开不开无所谓。
参考 https://blog.csdn.net/weixin_43823808/article/details/124494499
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