如何使用xmlpullparser android解析xml字符串 [英] How to parse xml string with xmlpullparser android
本文介绍了如何使用xmlpullparser android解析xml字符串的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我想解析一个XML字符串并将其显示在EditText中，但是我不能，我不明白可能是什么问题，请给我的代码一点帮助:
I want to parse an XML string and display it in a EditText but I can't, I not understand what could be the problem, please a bit help, my code :
private String xmlc = < game>< cel> 5</cel< val> 2</val></game>" ;;
private String xmlc = "<game><cel>5</cel><val>2</val></game>";
private CharSequence readXML(String xmlc2) throws XmlPullParserException {
XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
XmlPullParser xpp = factory.newPullParser();
String results = "";
String celda = "";
String valor = "";
xpp.setInput(new StringReader (xmlc2));
int eventType = xpp.getEventType();
String tagName = xpp.getName();
try {
while (eventType != XmlPullParser.END_DOCUMENT) {
if(tagName.equalsIgnoreCase("cell")){
celda = xpp.nextText();
} else if(tagName.equalsIgnoreCase("val")){
valor = xpp.nextText();
}
xpp.nextTag();
}
} catch (Exception e) {
Toast.makeText(this, "error!", Toast.LENGTH_LONG).show();
}
return celda;
}
感谢您的建议，现在我可以将字符串xml作为参数发送并可以解析，但是我不知道如何保存找到的2个值并在不同的EditText中显示每个值?
Thanks for the suggestion, now I can send the string xml as parameter and I can to parse, but I don't know how save the 2 values found and show each value in different EditText?
private EditText et02;
private EditText et03;
private String xmlc = "<game><cel>5</cel><val>2</val></game>";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
EditText et02 = (EditText)findViewById(R.id.et02);
EditText et03 = (EditText)findViewById(R.id.et03);
TextView myXmlContent = (TextView)findViewById(R.id.xml_tv);
String stringXmlContent;
stringXmlContent = getAllXML();
myXmlContent.setText(stringXmlContent);
}
public String getAllXML(){
Activity activity = this;
String str = "";
//For file source
//Resources res = activity.getResources();
//XmlResourceParser xpp = res.getXml(R.xml.test);
try {
//For String source
XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
factory.setNamespaceAware(true);
XmlPullParser xpp = factory.newPullParser();
xpp.setInput(new StringReader(xmlc));
xpp.next();
int eventType = xpp.getEventType();
while (xpp.getEventType()!=XmlPullParser.END_DOCUMENT) {
if (xpp.getEventType()==XmlPullParser.START_TAG) {
if (xpp.getName().equals("cel")) {
str += "\ncell : "+xpp.nextText();
}
if (xpp.getName().equals("val")) {
str += "\nval : "+xpp.nextText();
}
}
xpp.next();
}
} catch (XmlPullParserException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return str;
}
推荐答案
//调用Web api并尝试以下代码进行xml解析
// call web api and try below code for xml parsing
new GettingData().execute();
private class GettingDataextends AsyncTask<String, String, String> {
private static final String PLACEMARK = "Placemark";
private static final String NAME = "name";
private static final String DESCRIPTION = "description";
private static final String COORDINATES = "coordinates";
private ProgressDialog progressDialog;
private String serverName, trackName;
@Override
protected void onPreExecute() {
super.onPreExecute();
progressDialog = new ProgressDialog(mContext);
progressDialog.setMessage("Loading ...");
progressDialog.setIndeterminate(false);
progressDialog.setCancelable(false);
progressDialog.show();
}
@Override
protected String doInBackground(String... args) {
try {
url = "Your_Url_Here";
XMLParser parser1 = new XMLParser();
String xml = parser1.getXmlFromUrl(url); // getting XML
XmlPullParserFactory factory = XmlPullParserFactory
.newInstance();
factory.setNamespaceAware(true);
XmlPullParser parser = factory.newPullParser();
parser.setInput(new StringReader(xml));
int eventType = parser.getEventType();
Model mModel = null;
while (eventType != XmlPullParser.END_DOCUMENT) {
String name = null;
switch (eventType) {
case XmlPullParser.START_DOCUMENT:
break;
case XmlPullParser.START_TAG:
name = parser.getName();
if (name.equalsIgnoreCase(PLACEMARK)) {
mModel = new Model();
} else if (mModel != null) {
if (name.equalsIgnoreCase(NAME)) {
mModel.setName(parser
.nextText());
} else if (name.equalsIgnoreCase(DESCRIPTION)) {
mModel.setDescription(parser
.nextText());
} else if (name.equalsIgnoreCase(COORDINATES)) {
mModel.setCoordinates(parser
.nextText());
}
}
break;
case XmlPullParser.END_TAG:
name = parser.getName();
if (name.equalsIgnoreCase(PLACEMARK)
&& mModel != null) {
if (!mPlaceMarkSingleDriver.getName()
.equalsIgnoreCase("null")) {
Constance.mArryList .add(mModel);
}
}
break;
}
eventType = parser.next();
}
} catch (Exception e) {
progressDialog.dismiss();
}
return null;
}
@Override
protected void onPostExecute(String result) {
progressdialog.dismiss();
}
//XmlParse类
// XmlParse class
import java.io.IOException;
import java.io.StringReader;
import java.io.UnsupportedEncodingException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import android.util.Log;
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();
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));
}
}
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