zookeeper springboot怎样进行配置管理

在Spring Boot中使用Apache ZooKeeper进行配置管理，可以通过以下几个步骤来实现：

1. 添加依赖

在你的pom.xml文件中添加以下依赖：

    org.springframework.boot
    spring-boot-starter-data-zookeeper

2. 配置ZooKeeper连接信息

在application.properties或application.yml文件中配置ZooKeeper的连接信息。例如：

# application.properties
spring.zookeeper.connect=127.0.0.1:2181
spring.zookeeper.session-timeout=3000
spring.zookeeper.connection-timeout=3000

或者

# application.yml
spring:
  zookeeper:
    connect: 127.0.0.1:2181
    session-timeout: 3000
    connection-timeout: 3000

3. 创建配置类

创建一个配置类，用于读取ZooKeeper中的配置信息。例如：

import org.apache.zookeeper.KeeperException;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

@Component
public class ZooKeeperConfig {

    @Value("${myapp.config.key}")
    private String configValue;

    public String getConfigValue() {
        return configValue;
    }

    public void setConfigValue(String configValue) {
        this.configValue = https://www.yisu.com/ask/configValue;>

使用配置信息

在你的服务类中，注入ZooKeeperConfig并获取配置信息。例如：
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class MyService {

    @Autowired
    private ZooKeeperConfig zooKeeperConfig;

    public void doSomething() {
        String configValue = https://www.yisu.com/ask/zooKeeperConfig.getConfigValue();>

监听配置变化

如果你需要实时监听配置值的变化，可以使用Curator框架来实现。首先，需要在pom.xml中添加Curator依赖：

    org.apache.curator
    curator-framework
    4.3.0


然后，在ZooKeeperConfig类中添加Curator的相关代码：
import org.apache.curator.framework.CuratorFramework;
import org.apache.curator.framework.CuratorFrameworkFactory;
import org.apache.curator.framework.recipes.cache.NodeCache;
import org.apache.curator.framework.recipes.cache.NodeCacheListener;
import org.apache.zookeeper.KeeperException;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

import java.util.concurrent.Executor;

@Component
public class ZooKeeperConfig {

    @Value("${myapp.config.key}")
    private String configValue;

    private CuratorFramework client;
    private NodeCache nodeCache;

    public ZooKeeperConfig() {
        client = CuratorFrameworkFactory.builder()
                .connectString("127.0.0.1:2181")
                .sessionTimeoutMs(3000)
                .build();
        client.start();

        nodeCache = new NodeCache(client, "/myapp/config");
        nodeCache.start();

        nodeCache.getListenable().addListener(new NodeCacheListener() {
            @Override
            public void nodeChanged() throws Exception {
                configValue = https://www.yisu.com/ask/new String(nodeCache.getCurrentData().getData());"Config value changed: " + configValue);
            }
        }, new Executor() {
            @Override
            public void execute(Runnable command) {
                command.run();
            }
        });
    }

    public String getConfigValue() {
        return configValue;
    }

    public void setConfigValue(String configValue) {
        this.configValue = https://www.yisu.com/ask/configValue;>
现在，当ZooKeeper中的配置值发生变化时，你的应用程序将自动更新配置值。