Question

我想在Smack消息下使用名为 content 的自定义扩展名，如下所示：

<message id="2DCBEFCB-4380-45D7-B188-A26A4F3F4604" type="chat" to="user@myxmppserver.com">
    <body>Body text here</body>
    <content xmlns="urn:xmpp:content">
        <element1 attribute1="some value"></element1>
        <element2>some value</element2>
        <element3>some other value</element3>
    </content>
</message>

我还将收到这种消息。我创建了一个实现ExtensionElement的自定义ContentExtension类：

public class ContentExtension implements ExtensionElement {

    public static final String NAMESPACE = "urn:xmpp:content";
    public static final String ELEMENT = "content";

    @Override
    public String getNamespace() {
        return NAMESPACE;
    }

    @Override
    public String getElementName() {
        return ELEMENT;
    }

    @Override
    public CharSequence toXML(String enclosingNamespace) {
        XmlStringBuilder builder = new XmlStringBuilder(this);

        //...I will put my child elements here If I somehow get them in the Provider below

        builder.closeElement(ELEMENT);
        return builder;
    }

    public static class Provider extends EmbeddedExtensionProvider<ContentExtension> {
        @Override
        protected ContentExtension createReturnExtension(String    currentElement, String currentNamespace, Map<String, String> attributeMap, List<? extends ExtensionElement> content) {
            ContentExtension contentExt = new ContentExtension();

            // How do I get child elements here with the parameters provided in the function 
            // I know attributeMap gives the attributes , but how to get the child elements?
            // And also how do we get the values inside of the elements NOT the attributes?

            return contentExt;
        }
    }
}

是否可以在自定义扩展名下添加和读取子元素？
是否有一种方法可以从提供者处获取传入消息的元素内的值（而不是属性）？

带内部子元素的smack 4.3.0中的自定义扩展元素

0 个答案: