如何获取存储在ConfigAdmin中的属性? [英] How can I get properties stored in ConfigAdmin?

问题描述

我已经创建了ConfigAdmin，并加载了一些属性.之后，我保存了它们.我的问题是:如何获取已存储的属性?
我已经在Activator.java中创建了ConfigAdmin:

I've created the ConfigAdmin loaded some properties. After that I've saved them. My question is: how can I get the properties that I have stored?
I've created the ConfigAdmin in the Activator.java:

public class Activator implements BundleActivator {

    private String configFile = "API.properties";
    @Override
    public void start(BundleContext bundleContext) throws Exception {
        InputStream stream = (bundleContext.getBundle().getResource(configFile)).openStream();
        Properties properties = new Properties();
        properties.load(stream);
        createConfigAdmin(properties);
    }

    @Override
    public void stop(BundleContext bundleContext) throws Exception {

    }
    private boolean createConfigAdmin(Properties properties, BundleContext context) {
        try {
            Dictionary<String, String> props = new Hashtable<String, String>();
            ServiceReference reference = context.getServiceReference(ConfigurationAdmin.class.getName());
            ConfigurationAdmin admin = (ConfigurationAdmin) context.getService(reference);
            Configuration configuration = admin.createFactoryConfiguration(pid.configAdminPID, null);
            for(final String name: properties.stringPropertyNames())
                props.put(name, properties.getProperty(name));
            configuration.update(props);
            return true;
        } catch(Exception e)
        {
            e.printStackTrace();
            return false;
        }
    }
}

推荐答案

您真的打算创建工厂配置吗?仅当您要为同一工厂pid创建多个配置时才需要它. 如果您只想创建一个简单的配置，则只需使用admin.getConfiguration(oid)，您就可以以与现在相同的方式更新配置.

Was your intention really to create a factory config? You only need it if you want to create several configs for the same factory pid. If you simply want to create a simple configuration then just use admin.getConfiguration(oid) you can update the configuration in the same way you do now.

如果您以后要阅读配置，只需再次获取即可.如果要使用此配置来配置捆绑软件，通常将创建一个ManagedService并将其发布.参见

If you want to read the configuration afterwards you simply get it again. If you want to configure a bundle with this configuration you typically will create a ManagedService and publish it. See http://liquid-reality.de/display/liquid/2011/09/23/Karaf+Tutorial+Part+2+-+Using+the+Configuration+Admin+Service

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