Dubbo常用功能02--protocol协议

1、修改配置：

#  #指定某一种协议
#  protocol:
#    name: dubbo
#    port: 20882

#  #指定多种协议
  protocols:
    pro1:
      id: dubbo1
      name: dubbo
      port: 20881
      host: 0.0.0.0
    pro2:
      id: dubbo2
      name: dubbo
      port: 20882
      host: 0.0.0.0

2、服务提供者代码：

对于"default"版本的服务，指定使用pro1协议

对于"async"版本的服务，指定使用pro2协议

package com.yas.serviceprovider.protocol;

import com.yas.api.SiteService;
import org.apache.dubbo.config.annotation.Service;

@Service(version = "default", protocol = "pro1")
public class ProtocolImpl1 implements SiteService {
    @Override
    public String getName(String name) {
        return "pro1:" + name;
    }
}

package com.yas.serviceprovider.protocol;

import com.yas.api.SiteService;
import org.apache.dubbo.config.annotation.Service;

@Service(version = "async",protocol = "pro2")
public class ProtocolImpl2 implements SiteService {
    @Override
    public String getName(String name) {
        return "pro2:" + name;
    }
}

使用zookeeper客户端连接，通过命令查询znode节点的数据：

./zkCli.sh
ls /dubbo/com.yas.api.SiteService/providers

查询的内容如下(经过URL解码)：

dubbo://192.168.0.101:20881/com.yas.api.SiteService?anyhost=true&application=site-service-boot-provider&bean.name=ServiceBean:com.yas.api.SiteService:default&deprecated=false&dubbo=2.0.2&dynamic=true&generic=false&interface=com.yas.api.SiteService&methods=getName&pid=9832&register=true&release=2.7.3&revision=default&side=provider&timestamp=1635987213625&version=default, 
dubbo://192.168.0.101:20882/com.yas.api.SiteService?anyhost=true&application=site-service-boot-provider&bean.name=ServiceBean:com.yas.api.SiteService:async&deprecated=false&dubbo=2.0.2&dynamic=true&generic=false&interface=com.yas.api.SiteService&methods=getName&pid=9832&register=true&release=2.7.3&revision=async&side=provider&timestamp=1635987214582&version=async

3、服务消费者代码：

消费者调用某个version的服务，服务端会使用其绑定的protocol进行完成消息的传输。

package com.yas.serviceconsumer.controller;

import com.yas.api.SiteService;
import org.apache.dubbo.config.annotation.Reference;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class ProtocolSiteController {

    @Reference(version = "default")
    SiteService siteService1;

    @RequestMapping("/pro1")
    public String getName1(@RequestParam("name") String name){
        return siteService1.getName(name);
    }

    @Reference(version = "async")
    SiteService SiteService2;

    @RequestMapping("/pro2")
    public String getName2(@RequestParam("name") String name){
        return SiteService2.getName(name);
    }
}

4、测试：

使用postman请求地址：http://localhost:8000/pro1?name=zhangsan

得到响应为：pro1:zhangsan

使用postman请求地址：http://localhost:8000/pro2?name=zhangsan

得到响应为：pro2:zhangsan