0

大家好，我的解析数据有问题，似乎这些额外的字母也在解析中，我希望它们删除



如何在我的代码中执行此操作，我将在下面发布。

这是我的 xmlparser.java

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);

    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    } catch (ClientProtocolException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    // return XML
    return xml;
}

/**
 * Getting XML DOM element
 * @param XML string
 * */
public Document getDomElement(String xml){
    Document doc = null;
    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
    dbf.setCoalescing(true);
    dbf.setNamespaceAware(true);
    if (dbf.isNamespaceAware()==Boolean.TRUE) {
        dbf.setNamespaceAware(Boolean.FALSE);

    }
    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 || child.getNodeType() == Node.CDATA_SECTION_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);
        str = str.replaceAll("<br/>"," \n");
        return this.getElementValue(n.item(0));
    }

 public final String getElemementValue2 ( Node elem) {
     Node child;
     if( elem != null) {
         if (elem.hasChildNodes()) {
             for ( child = elem.getFirstChild(); child != null; child = child.getNextSibling() ) {
                 if(child.getNodeType() == Node.CDATA_SECTION_NODE) {
                     return child.getNodeValue();

                 }
             }
         }
     }


    return "";

 }

 public String getValue3(Element item, String str) {
     NodeList n = item.getElementsByTagNameNS("http://purl.org/rss/1.0/modules/content/",str );
     String ses = this.getElemementValue2(n.item(0));

     String mim =ses.replaceAll("(?s)\\<.*?\\>", " \n");

    return mim;

 }


}

这里是 main.java AndroidXMLParsingActivity

public class AndroidXMLParsingActivity extends ListActivity {

// All static variables
static final String URL = "https://news.instaforex.com/news";
// XML node keys
static final String KEY_ITEM = "item"; // parent node
static final String KEY_ID = "id";
static final String KEY_TITLE = "title";
static final String KEY_PUBDATE = "pubDate";
static final String KEY_DESCRIPTION = "description";

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    ArrayList<HashMap<String, String>> menuItems = new ArrayList<HashMap<String, String>>();

    XMLParser parser = new XMLParser();
    String xml = parser.getXmlFromUrl(URL); // getting XML
    Document doc = parser.getDomElement(xml); // getting DOM element

    NodeList nl = doc.getElementsByTagName(KEY_ITEM);
    // looping through all item nodes <item>
    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_PUBDATE, parser.getValue(e, KEY_PUBDATE));
        map.put(KEY_DESCRIPTION, parser.getValue(e, KEY_DESCRIPTION));

        // adding HashList to ArrayList
        menuItems.add(map);
    }

    // Adding menuItems to ListView
    ListAdapter adapter = new SimpleAdapter(this, menuItems,
            R.layout.list_item,
            new String[] { KEY_TITLE, KEY_DESCRIPTION, KEY_PUBDATE }, new int[] {
                    R.id.name, R.id.desciption, R.id.cost });

            adapter.setNotifyOnChange(true);
    setListAdapter(adapter);

    // selecting single ListView item
    ListView lv = getListView();

    lv.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> parent, View view,
                int position, long id) {
            // getting values from selected ListItem
            String title = ((TextView) view.findViewById(R.id.name)).getText().toString();
            String pubDate = ((TextView) view.findViewById(R.id.cost)).getText().toString();
            String description = ((TextView) view.findViewById(R.id.desciption)).getText().toString();

            // Starting new intent
            Intent in = new Intent(getApplicationContext(), SingleMenuItemActivity.class);
            in.putExtra(KEY_TITLE, title);
            in.putExtra(KEY_PUBDATE, pubDate);
            in.putExtra(KEY_DESCRIPTION, description);
            startActivity(in);

        }
    });
}
}

我只是想在描述中解析这些代码，我想在此之前停止解析数据

请查看此链接并检查说明。

4

1 回答 1

0

查看如何在 Android 中剥离或转义 html 标签

您可以使用 Html.fromHtml(stringToEscape).toString();方法来转义任何您想要的标签。

编辑：

尝试通过从 HashMap 获取来传递 pudate 和描述的值，如下所示：

  @Override
  public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
     setContentView(R.layout.main);
ArrayList<HashMap<String, String>> menuItems = new ArrayList<HashMap<String, String>>();
XMLParser parser = new XMLParser();
String xml = parser.getXmlFromUrl(URL); // getting XML
Document doc = parser.getDomElement(xml); // getting DOM element

NodeList nl = doc.getElementsByTagName(KEY_ITEM);
// looping through all item nodes <item>
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_PUBDATE, parser.getValue(e, KEY_PUBDATE));
    map.put(KEY_DESCRIPTION, parser.getValue(e, KEY_DESCRIPTION));
    // adding HashList to ArrayList
    menuItems.add(map);
}

// Adding menuItems to ListView
ListAdapter adapter = new SimpleAdapter(this, menuItems,
        R.layout.list_item,
        new String[] { KEY_TITLE, KEY_PUBDATE }, new int[] {
                R.id.name, R.id.cost });

setListAdapter(adapter);

// selecting single ListView item
ListView lv = getListView();
lv.setOnItemClickListener(new OnItemClickListener() {
    @Override
    public void onItemClick(AdapterView<?> parent, View view,
            int position, long id) {
        String m_pubDate = menuItems.get(position).get(KEY_PUBDATE).toString();
    String m_description=menuItems.get(position).get(KEY_DESCRIPTION).toString();

System.out.println("PubDate==>"+m_pubDate+"\n Description===>"+m_description);
        // Starting new intent
        Intent in = new Intent(getApplicationContext(), SingleMenuItemActivity.class);
        in.putExtra(KEY_PUBDATE, m_pubDate);
        in.putExtra(KEY_DESCRIPTION, m_description);
        startActivity(in);
    }
   });
 }

我希望它会帮助你。

谢谢。

于 2013-02-15T06:40:37.487 回答