我正在尝试使用以下代码解析程序中的xml。但它在logcat中抛出了以下错误。任何人都可以帮忙。
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.DOMException;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
import android.util.Log;
public class Secactivity
{
public static String TAG = "Abeeee";
public static String[] PodcastTitle;
public static String[] PodcastURL;
public static String[] PodcastContent;
public static String[] PodcastMedia;
public static void parse()
{
URL url;
try
{
// Set the url (you will need to change this to your RSS URL
url = new URL(
"http://myurl");
// Setup the connection
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
// Connect
if (conn.getResponseCode() == HttpURLConnection.HTTP_OK)
{
// Retreive the XML from the URL
DocumentBuilderFactory dbf = DocumentBuilderFactory
.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
Document doc;
doc = db.parse(url.openStream());
doc.getDocumentElement().normalize();
// This is the root node of each section you want to parse
NodeList itemLst = doc.getElementsByTagName("employee");
// This sets up some arrays to hold the data parsed
PodcastTitle = new String[itemLst.getLength()];
PodcastURL = new String[itemLst.getLength()];
//PodcastContent = new String[itemLst.getLength()];
//PodcastMedia = new String[itemLst.getLength()];
// Loop through the XML passing the data to the arrays
for (int i = 0; i < itemLst.getLength(); i++)
{
Node item = itemLst.item(i);
if (item.getNodeType() == Node.ELEMENT_NODE)
{
Element ielem = (Element) item;
// This section gets the elements from the XML
// that we want to use you will need to add
// and remove elements that you want / don't want
NodeList title = ielem.getElementsByTagName("title");
NodeList link = ielem.getElementsByTagName("link");
//NodeList content = ielem
// .getElementsByTagName("content:encoded");
//NodeList media = ielem
// .getElementsByTagName("media:content");
// This is an attribute of an element so I create
// a string to make it easier to use
// String mediaurl = media.item(0).getAttributes()
// .getNamedItem("url").getNodeValue();
// This section adds an entry to the arrays with the
// data retrieved from above. I have surrounded each
// with try/catch just incase the element does not
// exist
try
{
Log.i(TAG,"Parsing");
PodcastTitle[i] = title.item(0)
.getChildNodes().item(0).getNodeValue();
} catch (NullPointerException e)
{
e.printStackTrace();
}
try
{
PodcastURL[i] = link.item(0).getChildNodes()
.item(0).getNodeValue();
} catch (NullPointerException e)
{
e.printStackTrace();
}
/* try
{
PodcastContent[i] = content.item(0)
.getChildNodes().item(0).getNodeValue();
} catch (NullPointerException e)
{
e.printStackTrace();
}
try
{
PodcastMedia[i] = mediaurl;
} catch (NullPointerException e)
{
e.printStackTrace();
}*/
}
}
}
} catch (MalformedURLException e)
{
e.printStackTrace();
} catch (DOMException e)
{
e.printStackTrace();
} catch (IOException e)
{
e.printStackTrace();
} catch (ParserConfigurationException e)
{
e.printStackTrace();
} catch (SAXException e)
{
e.printStackTrace();
}
}
}
LOGCAT条目：
01-10 05:20:25.964: E/ActivityThread(612): Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@40d5f150 that was originally bound here
01-10 05:20:25.964: E/ActivityThread(612): android.app.ServiceConnectionLeaked: Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@40d5f150 that was originally bound here
01-10 05:20:25.964: E/ActivityThread(612): at android.app.LoadedApk$ServiceDispatcher.<init>(LoadedApk.java:969)
01-10 05:20:25.964: E/ActivityThread(612): at android.app.LoadedApk.getServiceDispatcher(LoadedApk.java:863)
01-10 05:20:25.964: E/ActivityThread(612): at android.app.ContextImpl.bindService(ContextImpl.java:1418)
01-10 05:20:25.964: E/ActivityThread(612): at android.app.ContextImpl.bindService(ContextImpl.java:1407)
01-10 05:20:25.964: E/ActivityThread(612): at android.content.ContextWrapper.bindService(ContextWrapper.java:473)
01-10 05:20:25.964: E/ActivityThread(612): at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:157)
01-10 05:20:25.964: E/ActivityThread(612): at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:145)
01-10 05:20:25.964: E/ActivityThread(612): at com.android.emailcommon.service.ServiceProxy.test(ServiceProxy.java:191)
01-10 05:20:25.964: E/ActivityThread(612): at com.android.exchange.ExchangeService$7.run(ExchangeService.java:1850)
01-10 05:20:25.964: E/ActivityThread(612): at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:551)
01-10 05:20:25.964: E/ActivityThread(612): at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:549)
01-10 05:20:25.964: E/ActivityThread(612): at android.os.AsyncTask$2.call(AsyncTask.java:287)
01-10 05:20:25.964: E/ActivityThread(612): at java.util.concurrent.FutureTask.run(FutureTask.java:234)
01-10 05:20:25.964: E/ActivityThread(612): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
01-10 05:20:25.964: E/ActivityThread(612): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
01-10 05:20:25.964: E/ActivityThread(612): at java.lang.Thread.run(Thread.java:856)
01-10 05:20:26.105: E/StrictMode(612): null
01-10 05:20:26.105: E/StrictMode(612): android.app.ServiceConnectionLeaked: Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@40d5f150 that was originally bound here
01-10 05:20:26.105: E/StrictMode(612): at android.app.LoadedApk$ServiceDispatcher.<init>(LoadedApk.java:969)
01-10 05:20:26.105: E/StrictMode(612): at android.app.LoadedApk.getServiceDispatcher(LoadedApk.java:863)
01-10 05:20:26.105: E/StrictMode(612): at android.app.ContextImpl.bindService(ContextImpl.java:1418)
01-10 05:20:26.105: E/StrictMode(612): at android.app.ContextImpl.bindService(ContextImpl.java:1407)
01-10 05:20:26.105: E/StrictMode(612): at android.content.ContextWrapper.bindService(ContextWrapper.java:473)
01-10 05:20:26.105: E/StrictMode(612): at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:157)
01-10 05:20:26.105: E/StrictMode(612): at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:145)
01-10 05:20:26.105: E/StrictMode(612): at com.android.emailcommon.service.ServiceProxy.test(ServiceProxy.java:191)
01-10 05:20:26.105: E/StrictMode(612): at com.android.exchange.ExchangeService$7.run(ExchangeService.java:1850)
01-10 05:20:26.105: E/StrictMode(612): at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:551)
01-10 05:20:26.105: E/StrictMode(612): at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:549)
01-10 05:20:26.105: E/StrictMode(612): at android.os.AsyncTask$2.call(AsyncTask.java:287)
01-10 05:20:26.105: E/StrictMode(612): at java.util.concurrent.FutureTask.run(FutureTask.java:234)
01-10 05:20:26.105: E/StrictMode(612): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
01-10 05:20:26.105: E/StrictMode(612): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
01-10 05:20:26.105: E/StrictMode(612): at java.lang.Thread.run(Thread.java:856)
主要课程：这就是我所说的Secactivity：
import android.annotation.TargetApi;
import android.app.Activity;
import android.content.Intent;
import android.os.Build;
import android.os.Bundle;
import android.os.StrictMode;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class MainActivity extends Activity {
EditText uid;
EditText password;
Button submit;
@TargetApi(Build.VERSION_CODES.GINGERBREAD)
@Override
protected void onCreate(Bundle savedInstanceState) {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
submit = (Button)findViewById(R.id.submit);
submit.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
uid = (EditText)findViewById(R.id.id);
password = (EditText)findViewById(R.id.password);
String userid = uid.getText().toString();
String pwd = password.getText().toString();
Loginauth log = new Loginauth();
if(!userid.equals("")&&!pwd.equals(""))
{
String result = log.Login(userid,pwd);
if(result.equals(""))
{
Toast toast = Toast.makeText(getApplicationContext(), "Login Error: Check id and Password", Toast.LENGTH_LONG);
toast.show();
}
else
{
Toast toast = Toast.makeText(getApplicationContext(), "Login Successfull", Toast.LENGTH_SHORT);
toast.show();
//startActivity(new Intent("com.example.temp.ABC"));
Secactivity.parse();
}
}
else
{
Toast toast = Toast.makeText(getApplicationContext(), "Invalid id or password", Toast.LENGTH_LONG);
toast.show();
}
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}
答案 0 :(得分：1)
尝试此链接，它解释了有关xml解析的所有内容
public class AndroidXMLParsingActivity extends ListActivity {
static final String URL = "http://api.androidhive.info/pizza/?format=xml";
// XML node keys
static final String KEY_ITEM = "item"; // parent node
static final String KEY_ID = "id";
static final String KEY_NAME = "name";
static final String KEY_COST = "cost";
static final String KEY_DESC = "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_NAME, parser.getValue(e, KEY_NAME));
map.put(KEY_COST, "Rs." + parser.getValue(e, KEY_COST));
map.put(KEY_DESC, parser.getValue(e, KEY_DESC));
// adding HashList to ArrayList
menuItems.add(map);
}
供参考.. http://www.androidhive.info/2011/11/android-xml-parsing-tutorial/
http://developer.android.com/training/basics/network-ops/xml.html