Spring Boot Dubbo Zookeeper

Spring Boot Dubbo Zookeeper

---

简介

Dubbo

Common

公共依赖

<dependency>
    <groupId>org.springframework.bootgroupId>
    <artifactId>spring-boot-starterartifactId>
    <version>2.3.0.RELEASEversion>
dependency>


<dependency>
    <groupId>org.apache.dubbogroupId>
    <artifactId>dubbo-spring-boot-starterartifactId>
    <version>2.7.8version>
dependency>


<dependency>
    <groupId>org.apache.dubbogroupId>
    <artifactId>dubbo-registry-zookeeperartifactId>
    <version>2.7.8version>
dependency>

• 定义接口（用户服务注册使用）

public interface HelloService {
    String sayHello(String name);
}

Provider

首先需要依赖Common

• yml

dubbo: 
  application: 
    name: my-application
  registry: 
    address: zookeeper://localhost:2181

• 实现定义的接口（Service是apache.dubbo）

@Service
public class HelloServiceImpl implements HelloService {
    @Override
    public String sayHello(String name) {
        return "Hello, " + name + "!";
    }
}

• 启动类（@EnableDubbo）

@EnableDubbo
@SpringBootApplication
public class Application {
    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

Consumer

首先需要依赖Common

• Controller（@Reference注解）

@RestController
public class HelloController {
    @Reference
    private HelloService helloService;

    @GetMapping("/hello/{name}")
    public String sayHello(@PathVariable String name) {
        return helloService.sayHello(name);
    }
}

Zookeeper

• 安装脚本

#!/bin/bash
#### 需要先装JDK ####
#### 需要先装JDK ####
#### 需要先装JDK ####
cd /data/server;
# 下载一个版本儿
wget https://archive.apache.org/dist/zookeeper/zookeeper-3.4.14/zookeeper-3.4.14.tar.gz;
# 创建目录
mkdir -p /data/server/apache-zookeeper-3.4.14;
# 解压到/usr/local下
tar -zxvf zookeeper-3.4.14.tar.gz -C /data/server/;
# 新增zk目录
mkdir -p /data/server/zookeeper-3.4.14/data;
mkdir -p /data/server/zookeeper-3.4.14/logs;
# 新增PID文件 并 设置PID
touch /data/server/zookeeper-3.4.14/data/myid;
# PID，与MAP key相同
echo 1 > /data/server/zookeeper-3.4.14/data/myid;
# 复制默认配置，改为zoo.cfg
cp /data/server/zookeeper-3.4.14/conf/zoo_sample.cfg /data/server/zookeeper-3.4.14/conf/zoo.cfg;
# 修改核心配置zoo.cfg
# 替换
dataDir_old='/tmp/zookeeper';
dataDir_url='/data/server/zookeeper-3.4.14/data';
sed -ig "s#${dataDir_old}#${dataDir_url}#" /data/server/zookeeper-3.4.14/conf/zoo.cfg;
# 写入dataLogDird
echo 'dataLogDir=/data/server/zookeeper-3.4.14/logs' >> /data/server/zookeeper-3.4.14/conf/zoo.cfg;
# 单节点，只需要写入单个即可
declare -A map
map[1]="127.0.0.1"

for key in ${!map[@]};do
    echo "server."${key}"="${map[${key}]}":2888:3888" >> /data/server/zookeeper-3.4.14/conf/zoo.cfg;
done

# 查看下配置
cat /data/server/zookeeper-3.4.14/conf/zoo.cfg;

# 启动
# 不是root，需要source /etc/profile!!
# 不是root，需要source /etc/profile!!
# 不是root，需要source /etc/profile!!
/data/server/zookeeper-3.4.14/bin/zkServer.sh start

# 查看状态
/data/server/zookeeper-3.4.14/bin/zkServer.sh status
#### 显示下面内容就是启动成功了 ####
#ZooKeeper JMX enabled by default
#Using config: /data/server/zookeeper-3.4.14/bin/../conf/zoo.cfg
#Mode: standalone
# 日志存储位置
tail -100f /data/server/zookeeper-3.4.14/zookeeper.out
###### 问题
###1. org.apache.zookeeper.server.admin.AdminServer$AdminServerException: Problem starting AdminServer on address 0.0.0.0, port 8080 and command URL /commands
### 解决办法：https://www.jianshu.com/p/181a69836fe9