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我在閱讀RSS提要值(XML格式)時遇到此錯誤。xml解析問題
當XML文件中存在純文本值,但是存在任何HTML元素(即<p>, <HTML>, <image>
)時,它成功讀取標題和描述。在XML文件中,它不顯示數據。
我使用this URL來獲取XML數據。
我想從這個描述標籤中使用HTML對象,即Img標籤。所以請讓我知道我怎麼能得到這個?
下面是代碼:
ArrayList<HashMap<String, String>> business_List = new ArrayList<HashMap<String,String>>();
XMLParser parser = new XMLParser();
String xml = parser.getXmlFromUrl(URL);
Document doc = parser.getDomElement(xml); // getting DOM element
NodeList nl = doc.getElementsByTagName(KEY_ITEM);
// looping through all song nodes <song>
for(int i=0;i<nl.getLength();i++)
{
//creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
Element e = (Element) nl.item(i);
//adding each child node to HashMap key => value
//map.put(KEY_ID, parser.getValue(e, KEY_ID));
map.put(KEY_TITLE, parser.getValue(e, KEY_TITLE));
map.put(KEY_PUB_DATE, parser.getValue(e, KEY_PUB_DATE));
map.put(KEY_DESCRIPTION, parser.getValue(e, KEY_DESCRIPTION));
business_List.add(map);
}
list = (ListView)findViewById(R.id.list);
// Getting adapter by passing xml data ArrayList
adpater = new LazyAdapter(this, business_List);
list.setAdapter(adpater);
}
=====這是我xmlparserclass ===
public class XMLParser {
// constructor
public XMLParser() {
}
/**
* Getting XML from URL making HTTP request
* @param url string
* */
public String getXmlFromUrl(String url) {
String xml = null;
try {
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
xml = EntityUtils.toString(httpEntity);
System.out.println("XML...." + xml);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return xml;
}
/**
* Getting XML DOM element
* @param XML string
* */
public Document getDomElement(String xml){
Document doc = null;
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
try {
DocumentBuilder db = dbf.newDocumentBuilder();
InputSource is = new InputSource();
is.setCharacterStream(new StringReader(xml));
doc = db.parse(is);
} catch (ParserConfigurationException e) {
Log.e("Error: ", e.getMessage());
return null;
} catch (SAXException e) {
Log.e("Error: ", e.getMessage());
return null;
} catch (IOException e) {
Log.e("Error: ", e.getMessage());
return null;
}
return doc;
}
/** Getting node value
* @param elem element
*/
public final String getElementValue(Node elem) {
Node child;
if(elem != null)
{
if (elem.hasChildNodes())
{
for(child = elem.getFirstChild(); child != null; child = child.getNextSibling())
{
if(child.getNodeType() == Node.TEXT_NODE )
{
return child.getNodeValue();
}
}
}
}
return "";
}
/**
* Getting node value
* @param Element node
* @param key string
* */
public String getValue(Element item, String str)
{
NodeList n = item.getElementsByTagName(str);
return this.getElementValue(n.item(0));
}
}
什麼錯誤?你能告訴我們你的代碼嗎? – 2012-08-03 11:26:58
下面是我的代碼... – 2012-08-04 07:01:09
您的代碼屬於問題,而不是答案。我已經把它放在那裏。請刪除不是答案的答案。 – 2012-08-04 10:20:59