Question

在BlackBerry应用程序中，我使用SAX解析器来解析我的XML。我知道如何使用ContentHandler接口进行SAX解析。但我想使用DefaultHandler类解析我的XML 所以我只能提供我需要的那些方法的定义。任何人都可以提供一个示例代码，我如何使用DefaultHandler 在BlackBerry中进行SAX解析的课程

Answer 1

用于xml，如

<items>
<item>
  <title>title content </title>
   ..
</item>
...
</items>



class XMLRSSHandler extends DefaultHandler {

    static final String TITLE = "title";
    static final String ITEM = "item";

    boolean isItem = false;
    boolean isTitle = false;
    Vector items = new Vector();
    String value = "";

    private Item currentItem = null;

    public XMLRSSHandler() {
    }

    public void startElement(String uri, String localName, String name, Attributes attributes) throws SAXException {
        if (name.equalsIgnoreCase(ITEM)) {
           currentItem = new Item();
        } else if (currentItem != null) {
            if (name.equalsIgnoreCase(TITLE)) {
                isTitle = true;
            }
        }
    }

    public void characters(char[] ch, int start, int length) throws SAXException {
        if (isTitle) {
            value = new String(ch, start, length).trim();
        }
    }

    public void endElement(String uri, String localName, String name) throws SAXException {
        if (isTitle && name.equalsIgnoreCase(TITLE)) {
            isTitle = false;
            currentItem.setTitle(value);
            return;
        }
        if (currentAItem != null
                && (name.equalsIgnoreCase(ITEM)) {
            Logger.debug("Loaded Item " + currentItem.getTitle());
            items.addElement(currentArticle);
            currentItem= null;
        }
    }
}

如何在BlackBerry中使用DefaultHandler类

1 个答案: