Java 没有显示RSS数据

我现在正在学习这个教程。我想将RSS的URL更改为我自己的地址。这是我的密码：

Java

import android.app.Activity;
import android.app.AlertDialog;
import android.app.ListActivity;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.ConnectivityManager;
import android.os.AsyncTask;
import android.os.Bundle;
import android.widget.Toast;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;


public class SplashActivty extends Activity {

String RSSFEEDURL = "http://feeds.feedburner.com/androidcentral?format=xml";
//wanted http://feeds.feedburner.com/TwitterRssFeedXML instead
RSSFeed feed;
String fileName;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.splash);

    fileName = "TDRSSFeed.td";

    File feedFile = getBaseContext().getFileStreamPath(fileName);

    ConnectivityManager conMgr = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    if (conMgr.getActiveNetworkInfo() == null) {

        // No connectivity. Check if feed File exists
        if (!feedFile.exists()) {

            // No connectivity & Feed file doesn't exist: Show alert to exit
            // & check for connectivity
            AlertDialog.Builder builder = new AlertDialog.Builder(this);
            builder.setMessage(
                    "Unable to reach server, \nPlease check your connectivity.")
                    .setTitle("TD RSS Reader")
                    .setCancelable(false)
                    .setPositiveButton("Exit",
                            new DialogInterface.OnClickListener() {
                                @Override
                                public void onClick(DialogInterface dialog,
                                                    int id) {
                                    finish();
                                }
                            });

            AlertDialog alert = builder.create();
            alert.show();
        } else {

            // No connectivty and file exists: Read feed from the File
            Toast toast = Toast.makeText(this,
                    "No connectivity! Reading last update...",
                    Toast.LENGTH_LONG);
            toast.show();
            feed = ReadFeed(fileName);
            startLisActivity(feed);
        }

    } else {

        // Connected - Start parsing
        new AsyncLoadXMLFeed().execute();

    }

}

private void startLisActivity(RSSFeed feed) {

    Bundle bundle = new Bundle();
    bundle.putSerializable("feed", feed);

    // launch List activity
    Intent intent = new Intent(SplashActivty.this, List_Activity.class);
    intent.putExtras(bundle);
    startActivity(intent);

    // kill this activity
    finish();

}

private class AsyncLoadXMLFeed extends AsyncTask<Void, Void, Void> {

    @Override
    protected Void doInBackground(Void... params) {

        // Obtain feed
        DOMParser myParser = new DOMParser();
        feed = myParser.parseXml(RSSFEEDURL);
        if (feed != null && feed.getItemCount() > 0)
            WriteFeed(feed);
        return null;

    }

    @Override
    protected void onPostExecute(Void result) {
        super.onPostExecute(result);

        startLisActivity(feed);
    }

}

// Method to write the feed to the File
private void WriteFeed(RSSFeed data) {

    FileOutputStream fOut = null;
    ObjectOutputStream osw = null;

    try {
        fOut = openFileOutput(fileName, MODE_PRIVATE);
        osw = new ObjectOutputStream(fOut);
        osw.writeObject(data);
        osw.flush();
    }

    catch (Exception e) {
        e.printStackTrace();
    }

    finally {
        try {
            fOut.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

// Method to read the feed from the File
private RSSFeed ReadFeed(String fName) {

    FileInputStream fIn = null;
    ObjectInputStream isr = null;

    RSSFeed _feed = null;
    File feedFile = getBaseContext().getFileStreamPath(fileName);
    if (!feedFile.exists())
        return null;

    try {
        fIn = openFileInput(fName);
        isr = new ObjectInputStream(fIn);

        _feed = (RSSFeed) isr.readObject();
    }

    catch (Exception e) {
        e.printStackTrace();
    }

    finally {
        try {
            fIn.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    return _feed;

}

}

DOMparser：

public class DOMParser {

private RSSFeed _feed = new RSSFeed();

public RSSFeed parseXml(String xml) {

    // _feed.clearList();

    URL url = null;
    try {
        url = new URL(xml);
    } catch (MalformedURLException e1) {
        e1.printStackTrace();
    }

    try {
        // Create required instances
        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        DocumentBuilder db = dbf.newDocumentBuilder();

        // Parse the xml
        Document doc = db.parse(new InputSource(url.openStream()));
        doc.getDocumentElement().normalize();

        // Get all <item> tags.
        NodeList nl = doc.getElementsByTagName("item");
        int length = nl.getLength();

        for (int i = 0; i < length; i++) {
            Node currentNode = nl.item(i);
            RSSItem _item = new RSSItem();

            NodeList nchild = currentNode.getChildNodes();
            int clength = nchild.getLength();

            // Get the required elements from each Item
            for (int j = 0; j < clength; j = j + 1) {

                Node thisNode = nchild.item(j);
                String theString = null;
                String nodeName = thisNode.getNodeName();

                theString = nchild.item(j).getFirstChild().getNodeValue();

                if (theString != null) {
                    if ("title".equals(nodeName)) {
                        // Node name is equals to 'title' so set the Node
                        // value to the Title in the RSSItem.
                        _item.setTitle(theString);
                    }

                    else if ("description".equals(nodeName)) {
                        _item.setDescription(theString);

                        // Parse the html description to get the image url
                        String html = theString;
                        org.jsoup.nodes.Document docHtml = Jsoup
                                .parse(html);
                        Elements imgEle = docHtml.select("img");
                        _item.setImage(imgEle.attr("src"));
                    }

                    else if ("pubDate".equals(nodeName)) {

                        // We replace the plus and zero's in the date with
                        // empty string
                        String formatedDate = theString.replace(" +0000",
                                "");
                        _item.setDate(formatedDate);
                    }

                }
            }

            // add item to the list
            _feed.addItem(_item);
        }

    } catch (Exception e) {
        e.printStackTrace();
    }

    // Return the final feed once all the Items are added to the RSSFeed
    // Object(_feed).
    return _feed;
}

}

公共类DOMParser{
私有RSSFeed_feed=新RSSFeed（）；
公共RSSFeed解析xml（字符串xml）{
//_feed.clearList（）；
URL=null；
试一试{
url=新url（xml）；
}捕获（格式错误的异常e1）{
e1.printStackTrace（）；
}
试一试{
//创建所需的实例
DocumentBuilderFactory dbf=DocumentBuilderFactory.newInstance（）；
DocumentBuilder db=dbf.newDocumentBuilder（）；
//解析xml
Document doc=db.parse（新的输入源（url.openStream（））；
doc.getDocumentElement（）.normalize（）；
//获取所有标签。
NodeList nl=doc.getElementsByTagName（“项目”）；
int length=nl.getLength（）；
for（int i=0；i

---

问题是我的个人URL不起作用，但原始URL起作用。有人能解决这个问题吗？

好的，经过一段时间的工作，我找到了解决这个问题的方法。只需在中调整一些设置，确保在

Optimize

下激活

SmartFeed

，就可以开始了。如果单独使用

SmartFeed

无法工作，请确保检查任何其他设置。

好的，经过一段时间的工作，我找到了解决方案。只需在中调整一些设置，确保在

Optimize

下激活

SmartFeed

，就可以开始了。如果

SmartFeed

单独不起作用，请确保检查任何其他设置

public class DOMParser {

private RSSFeed _feed = new RSSFeed();

public RSSFeed parseXml(String xml) {

    // _feed.clearList();

    URL url = null;
    try {
        url = new URL(xml);
    } catch (MalformedURLException e1) {
        e1.printStackTrace();
    }

    try {
        // Create required instances
        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        DocumentBuilder db = dbf.newDocumentBuilder();

        // Parse the xml
        Document doc = db.parse(new InputSource(url.openStream()));
        doc.getDocumentElement().normalize();

        // Get all <item> tags.
        NodeList nl = doc.getElementsByTagName("item");
        int length = nl.getLength();

        for (int i = 0; i < length; i++) {
            Node currentNode = nl.item(i);
            RSSItem _item = new RSSItem();

            NodeList nchild = currentNode.getChildNodes();
            int clength = nchild.getLength();

            // Get the required elements from each Item
            for (int j = 0; j < clength; j = j + 1) {

                Node thisNode = nchild.item(j);
                String theString = null;
                String nodeName = thisNode.getNodeName();

                theString = nchild.item(j).getFirstChild().getNodeValue();

                if (theString != null) {
                    if ("title".equals(nodeName)) {
                        // Node name is equals to 'title' so set the Node
                        // value to the Title in the RSSItem.
                        _item.setTitle(theString);
                    }

                    else if ("description".equals(nodeName)) {
                        _item.setDescription(theString);

                        // Parse the html description to get the image url
                        String html = theString;
                        org.jsoup.nodes.Document docHtml = Jsoup
                                .parse(html);
                        Elements imgEle = docHtml.select("img");
                        _item.setImage(imgEle.attr("src"));
                    }

                    else if ("pubDate".equals(nodeName)) {

                        // We replace the plus and zero's in the date with
                        // empty string
                        String formatedDate = theString.replace(" +0000",
                                "");
                        _item.setDate(formatedDate);
                    }

                }
            }

            // add item to the list
            _feed.addItem(_item);
        }

    } catch (Exception e) {
        e.printStackTrace();
    }

    // Return the final feed once all the Items are added to the RSSFeed
    // Object(_feed).
    return _feed;
}

}