zookeeper springboot如何进行部署上线

将Zookeeper与Spring Boot项目整合并部署上线，可以按照以下步骤进行：

部署Zookeeper

1. 环境准备

   • 确保已安装Java开发环境（JDK）。
   • 使用Docker Compose来简化Zookeeper的部署过程。创建一个docker-compose-zookeeper.yml文件，内容如下：

     version: '3'
     services:
       zookeeper:
         image: zookeeper:3.7.0
         container_name: zookeeper
         restart: unless-stopped
         volumes:
           - "./zookeeper/data:/data"
           - "./zookeeper/datalog:/datalog"
         ports:
           - "2181:2181"
     

   • 这个配置文件定义了一个Zookeeper服务，使用官方的Zookeeper镜像，并映射了数据存储目录和日志目录。

2. 启动Zookeeper

   • 在包含docker-compose-zookeeper.yml文件的目录中，运行以下命令启动Zookeeper服务：

     docker-compose -f docker-compose-zookeeper.yml -p zookeeper up -d
     

   • 启动后，可以通过访问http://ip地址:8089来使用Zookeeper的Web UI。

整合Spring Boot与Zookeeper

1. 添加依赖

   • 在Spring Boot项目的pom.xml文件中添加Curator依赖，用于简化Zookeeper操作：

     <dependency>
         <groupId>org.apache.curator</groupId>
         <artifactId>curator-framework</artifactId>
         <version>4.0.1</version>
     </dependency>
     <dependency>
         <groupId>org.apache.curator</groupId>
         <artifactId>curator-client</artifactId>
         <version>4.0.1</version>
     </dependency>
     

2. 配置Zookeeper连接信息

   • 在application.properties文件中配置Zookeeper的连接信息：

     spring.cloud.zookeeper.connect-string=localhost:2181
     

3. 服务注册与发现

   • 创建一个服务注册类，用于将Spring Boot应用实例注册到Zookeeper：

     @Service
     public class ServiceRegistration {
         @Value("${spring.application.name}")
         private String serviceName;
     
         @Value("${server.port}")
         private int port;
     
         @Value("${spring.cloud.zookeeper.connect-string}")
         private String connectString;
     
         private ZooKeeper zooKeeper;
     
         @PostConstruct
         public void registerService() throws Exception {
             zooKeeper = new ZooKeeper(connectString, 2000, event -> {});
             String path = "/" + serviceName;
             Stat stat = zooKeeper.exists(path, false);
             if (stat == null) {
                 zooKeeper.create(path, null, ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
             }
             String instancePath = path + "/" + serviceName + "-" + port;
             zooKeeper.create(instancePath, null, ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.EPHEMERAL);
         }
     }
     

4. 服务发现

   • 创建一个服务发现类，用于从Zookeeper中获取可用的服务实例：

     @Service
     public class ServiceDiscovery {
         @Value("${spring.cloud.zookeeper.connect-string}")
         private String connectString;
     
         private ZooKeeper zooKeeper;
     
         @PostConstruct
         public void init() throws Exception {
             zooKeeper = new ZooKeeper(connectString, 2000, event -> {});
         }
     
         public List<String> getServiceInstances(String serviceName) throws Exception {
             String path = "/" + serviceName;
             return zooKeeper.getChildren(path, false);
         }
     }
     

通过以上步骤，你可以成功将Zookeeper与Spring Boot项目整合，并实现服务的注册与发现。记得在部署上线前进行充分的测试，确保系统的稳定性和可靠性。