相关疑难解决方法(0)

是否有任何记录良好的Apache ZooKeeper用例用于分发Java应用程序的配置,特别是Spring服务？

像许多云服务用户一样,我需要更改可变数量的Java服务的配置,最好是在运行时,而不需要重新启动服务.

UPDATE

最后,我最终写了一些东西,将ZooKeeper节点作为属性文件加载,并创建一个ResourcePropertySource并将其插入到Spring上下文中.请注意,这不会反映上下文启动后ZooKeeper节点的更改.

public class ZooKeeperPropertiesApplicationContextInitializer implements ApplicationContextInitializer<ConfigurableApplicationContext> {
    private static final Logger logger = LoggerFactory.getLogger(ZooKeeperPropertiesApplicationContextInitializer.class);

    private final CuratorFramework curator;
    private String projectName;
    private String projectVersion;

    public ZooKeeperPropertiesApplicationContextInitializer() throws IOException {
        logger.trace("Attempting to construct CuratorFramework instance");

        RetryPolicy retryPolicy = new ExponentialBackoffRetry(10, 100);
        curator = CuratorFrameworkFactory.newClient("zookeeper", retryPolicy);
        curator.start();
    }

    /**
     * Add a primary property source to the application context, populated from
     * a pre-existing ZooKeeper node.
     */
    @Override
    public void initialize(ConfigurableApplicationContext applicationContext) {
        logger.trace("Attempting to add …

有没有办法在.properties文件中包含条件语句？

喜欢:

if(condition1)
    xyz = abc
else if(condition2)
    xyz = efg