springboot整合zookeeper编写demo
时间: 2023-06-29 09:15:24 浏览: 125
好的,下面是一个简单的Spring Boot整合Zookeeper的Demo代码。
首先,需要在pom.xml文件中添加依赖:
```xml
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
</dependency>
```
然后,在application.properties文件中配置Zookeeper的连接地址和端口号:
```
spring.cloud.zookeeper.connect-string=localhost:2181
```
接下来,创建一个ZookeeperServiceDiscovery类,用于向Zookeeper注册服务:
```java
import org.springframework.cloud.client.serviceregistry.Registration;
import org.springframework.cloud.client.serviceregistry.ServiceRegistry;
import org.springframework.stereotype.Component;
@Component
public class ZookeeperServiceDiscovery implements ServiceRegistry<Registration> {
@Override
public void register(Registration registration) {
// 获取服务的名称和地址
String serviceName = registration.getServiceId();
String serviceAddress = registration.getHost() + ":" + registration.getPort();
// 向Zookeeper注册服务
// 这里可以使用ZooKeeper客户端库,也可以使用Curator框架
// 这里使用Curator框架进行注册
CuratorFramework client = CuratorFrameworkFactory.newClient(
"localhost:2181",
new RetryNTimes(3, 1000)
);
client.start();
try {
String path = "/services/" + serviceName + "/" + serviceAddress;
client.create()
.creatingParentsIfNeeded()
.withMode(CreateMode.EPHEMERAL)
.forPath(path);
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
public void deregister(Registration registration) {
// 获取服务的名称和地址
String serviceName = registration.getServiceId();
String serviceAddress = registration.getHost() + ":" + registration.getPort();
// 从Zookeeper注销服务
// 这里可以使用ZooKeeper客户端库,也可以使用Curator框架
// 这里使用Curator框架进行注销
CuratorFramework client = CuratorFrameworkFactory.newClient(
"localhost:2181",
new RetryNTimes(3, 1000)
);
client.start();
try {
String path = "/services/" + serviceName + "/" + serviceAddress;
client.delete().forPath(path);
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
public void close() {
}
@Override
public void setStatus(Registration registration, String status) {
}
@Override
public <T> T getStatus(Registration registration) {
return null;
}
@Override
public Iterable<Registration> getRegistrations() {
return null;
}
@Override
public Registration getRegistration(String s) {
return null;
}
}
```
最后,在启动类中加入@EnableDiscoveryClient注解,启用服务注册和发现功能:
```java
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
@SpringBootApplication
@EnableDiscoveryClient
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
```
这样就完成了一个简单的Spring Boot整合Zookeeper的Demo。注意,这里只是演示了服务注册功能,如果需要使用服务发现功能,还需要在客户端中加入@EnableDiscovery注解,并使用@LoadBalanced注解来实现负载均衡。
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