spring boot +dubbo+zookeeper

dubbo是一个分布式服务框架,致力于提供高性能和透明化的RPC远程服务调用方案,以及SOA服务治理方案。

结合本公司的开发也是用的dubbo这款优秀的框架，加上 最近工作重心的。所以对于dubbo的学习已经是迫在眉睫了。

在中秋假期，抽空实战了一把基于spring boot +dubbo+zookeeper 。其中也遇到了 很多的坑。

在这里记录一下。

我们看下dubbo的官网。http://dubbo.apache.org/en-us/ 。这里不在做赘述。

我们开始上手去实战一个初步的demo。用实战的角度去学习他。

在官网上也给我们了例子。

我们按照官网去实现它

首先 我们去搭建zookeeper。之所以选择zookeeper 我感觉还是资料多吧。

我们去下载zookeeper 然后启动就可以。

我这里用的是服务模式启动的。所以我在项目中用的 是3000的端口

我们去常见一个通用的api

package com.example.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class DemoApplication {

    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.class, args);
    }

}

　　配置文件

spring:
  application:
    name: interface

　　我们去创建provider

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>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.8.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.studay.leizi</groupId>
    <artifactId>leiziuser-server</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>leiziuser-server</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>

        <!-- Spring Boot dependencies -->
        <dependency>
            <groupId>com.alibaba.boot</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
            <version>0.2.0</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
        </dependency>

        <!-- Zookeeper dependencies -->
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-dependencies-zookeeper</artifactId>
            <version>2.7.3</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>dubbo</artifactId>
            <version>2.6.4</version>
            <scope>compile</scope>
            <exclusions>
                <exclusion>
                    <artifactId>spring</artifactId>
                    <groupId>org.springframework</groupId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>com.example</groupId>
            <artifactId>demo</artifactId>
            <version>0.0.1-SNAPSHOT</version>
            <scope>compile</scope>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>2.1.0.RELEASE</version>
                <executions>
                    <execution>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

　　实现方法

package com.studay.leizi.leiziuserserver.imp;

import com.alibaba.dubbo.config.annotation.Service;
import com.example.demo.service.DemoService;
import org.springframework.beans.factory.annotation.Value;

@Service
public class DefaultDemoService implements DemoService {

    @Value("dubbo-auto-configuration-provider-demo")
    private String serviceName;

    public String sayHello(String name) {
        return String.format("Hello, %s", name);
    }
}

　　application.yml配置

spring:
  application:
    name: dubbo-registry-zookeeper-consumer-sample
dubbo:
  registry:
    address: zookeeper://127.0.0.1:3000
    protocol: zookeeper
    id: my-registry
  protocol:
    name: dubbo
    port: 12345
    id: dubbo
    status: server
  application:
    id: cusss
    name: cusss
  scan:
    basePackages: com.studay.leizi.leiziuserserver
server:
  port: 8081

　　这个时候我们去启动。

启动成功，我们去创建服务消费方

package com.styday.leiziapi.connec;

import com.alibaba.dubbo.config.annotation.Reference;
import com.alibaba.dubbo.config.annotation.Service;
import com.example.demo.service.DemoService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

@Service
@Component
public  class  Demoe implements DemoService {
    @Reference
    DemoService demoService;

    @Override
    public String sayHello(String name) {
        return demoService.sayHello(name);
    }
}

　　

为了方便我们查看调用是否成功，我们编写controller

package com.styday.leiziapi.connter;

import com.styday.leiziapi.connec.Demoe;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;

@RestController("/home")
public class Consned {
    @Autowired
    Demoe demoe;

    @GetMapping("/getPayInfo")
    public String say(@RequestParam("name") String name) {
        return demoe.sayHello(name);
    }
}

application.yml配置
spring:
  application:
    name: consumer
dubbo:
  registry:
    address: zookeeper://127.0.0.1:3000
  protocol:
    name: dubbo
    port: 2081
    id: dubbo
  application:
      id: cusss
      name: cusss
  scan:
      basePackages: com.styday.leiziapi.connec.Demoe
server:
  port: 9999

　　启动完毕后， 启动。

、

我们可以用dubbo管理后台，去看服务的注册。下载地址 https://github.com/apache/dubbo/tree/2.5.x、

mvn clean package -Dmaven.test.skip=true

然后 放在Tomcat启动。

配置下

webapps\dubbo-admin-2.6.0\WEB-INF\dubbo.properties

然后启动后登陆就可以

这样就可以在管理后台查看我们的服务了。