01-13 17:09:30.251: ERROR/RSS Handler IO(277): Too many redirects >> java.net.ProtocolException: Too many redirects
这是我的RSSReader.java页面
/**
*
*/
package com.tmm.android.rssreader.reader;
import java.util.ArrayList;
import java.util.List;
import org.json.JSONException;
import org.json.JSONObject;
import android.text.Html;
import android.util.Log;
import com.tmm.android.rssreader.util.Article;
import com.tmm.android.rssreader.util.RSSHandler;
/**
* @author rob
*
*/
public class RssReader {
private final static String BOLD_OPEN = "<B>";
private final static String BOLD_CLOSE = "</B>";
private final static String BREAK = "<BR>";
private final static String ITALIC_OPEN = "<I>";
private final static String ITALIC_CLOSE = "</I>";
private final static String SMALL_OPEN = "<SMALL>";
private final static String SMALL_CLOSE = "</SMALL>";
/**
* This method defines a feed URL and then calles our SAX Handler to read the article list
* from the stream
*
* @return List<JSONObject> - suitable for the List View activity
*/
public static List<JSONObject> getLatestRssFeed(){
//String feed = "http://globoesporte.globo.com/dynamo/futebol/times/vasco/rss2.xml";
String feed = "http://www.flightstats.com/go/rss/flightStatusByRoute.do?guid=34b64945a69b9cac:-420d81e6:134c55649d7:-21c5&departureCode=cgk&arrivalCode=sub&departureDate=2012-01-13";
RSSHandler rh = new RSSHandler();
List<Article> articles = rh.getLatestArticles(feed);
Log.e("RSS ERROR", "Number of articles " + articles.size());
return fillData(articles);
}
/**
* This method takes a list of Article objects and converts them in to the
* correct JSON format so the info can be processed by our list view
*
* @param articles - list<Article>
* @return List<JSONObject> - suitable for the List View activity
*/
private static List<JSONObject> fillData(List<Article> articles) {
List<JSONObject> items = new ArrayList<JSONObject>();
for (Article article : articles) {
JSONObject current = new JSONObject();
try {
buildJsonObject(article, current);
} catch (JSONException e) {
Log.e("RSS ERROR", "Error creating JSON Object from RSS feed");
}
items.add(current);
}
return items;
}
/**
* This method takes a single Article Object and converts it in to a single JSON object
* including some additional HTML formating so they can be displayed nicely
*
* @param article
* @param current
* @throws JSONException
*/
private static void buildJsonObject(Article article, JSONObject current) throws JSONException {
String title = article.getTitle();
String description = article.getDescription();
String date = article.getPubDate();
String imgLink = article.getImgLink();
StringBuffer sb = new StringBuffer();
sb.append(BOLD_OPEN).append(title).append(BOLD_CLOSE);
sb.append(BREAK);
sb.append(description);
sb.append(BREAK);
sb.append(SMALL_OPEN).append(ITALIC_OPEN).append(date).append(ITALIC_CLOSE).append(SMALL_CLOSE);
current.put("text", Html.fromHtml(sb.toString()));
current.put("imageLink", imgLink);
}
}
这是我的RSSHandler.java代码
package com.tmm.android.rssreader.util;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.xml.sax.Attributes;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.DefaultHandler;
import android.util.Log;
public class RSSHandler extends DefaultHandler {
// Feed and Article objects to use for temporary storage
private Article currentArticle = new Article();
private List<Article> articleList = new ArrayList<Article>();
// Number of articles added so far
private int articlesAdded = 0;
// Number of articles to download
private static final int ARTICLES_LIMIT = 20;
//Current characters being accumulated
StringBuffer chars = new StringBuffer();
/*
* This method is called everytime a start element is found (an opening XML marker)
* here we always reset the characters StringBuffer as we are only currently interested
* in the the text values stored at leaf nodes
*
* (non-Javadoc)
* @see org.xml.sax.helpers.DefaultHandler#startElement(java.lang.String, java.lang.String, java.lang.String, org.xml.sax.Attributes)
*/
public void startElement(String uri, String localName, String qName, Attributes atts) {
chars = new StringBuffer();
}
/*
* This method is called everytime an end element is found (a closing XML marker)
* here we check what element is being closed, if it is a relevant leaf node that we are
* checking, such as Title, then we get the characters we have accumulated in the StringBuffer
* and set the current Article's title to the value
*
* If this is closing the "Item", it means it is the end of the article, so we add that to the list
* and then reset our Article object for the next one on the stream
*
*
* (non-Javadoc)
* @see org.xml.sax.helpers.DefaultHandler#endElement(java.lang.String, java.lang.String, java.lang.String)
*/
public void endElement(String uri, String localName, String qName) throws SAXException {
if (localName.equalsIgnoreCase("title"))
{
Log.d("LOGGING RSS XML", "Setting article title: " + chars.toString());
currentArticle.setTitle(chars.toString());
}
else if (localName.equalsIgnoreCase("description"))
{
Log.d("LOGGING RSS XML", "Setting article description: " + chars.toString());
currentArticle.setDescription(chars.toString());
}
else if (localName.equalsIgnoreCase("pubDate"))
{
Log.d("LOGGING RSS XML", "Setting article published date: " + chars.toString());
currentArticle.setPubDate(chars.toString());
}
else if (localName.equalsIgnoreCase("encoded"))
{
Log.d("LOGGING RSS XML", "Setting article content: " + chars.toString());
currentArticle.setEncodedContent(chars.toString());
}
//////////////////
else if(localName.equalsIgnoreCase("fh:FlightHistory"))
{
Log.d("LOGGING RSS XML", "Setting article content: " + chars.toString());
currentArticle.setFhFlightHistory(chars.toString());
}
else if(localName.equalsIgnoreCase("fh:Airline"))
{
Log.d("LOGGING RSS XML", "Setting article content: " + chars.toString());
currentArticle.setFhAirline(chars.toString());
}
////////////////////
else if (localName.equalsIgnoreCase("item"))
{
}
else if (localName.equalsIgnoreCase("link"))
{
try {
System.out.println(chars.toString());
Log.d("LOGGING RSS XML", "Setting article link url: " + chars.toString());
currentArticle.setUrl(new URL(chars.toString()));
} catch (MalformedURLException e) {
Log.e("RSA Error", e.getMessage());
e.printStackTrace();
}
}
// Check if looking for article, and if article is complete
if (localName.equalsIgnoreCase("item")) {
articleList.add(currentArticle);
currentArticle = new Article();
// Lets check if we've hit our limit on number of articles
articlesAdded++;
if (articlesAdded >= ARTICLES_LIMIT)
{
throw new SAXException();
}
}
}
/*
* This method is called when characters are found in between XML markers, however, there is no
* guarante that this will be called at the end of the node, or that it will be called only once
* , so we just accumulate these and then deal with them in endElement() to be sure we have all the
* text
*
* (non-Javadoc)
* @see org.xml.sax.helpers.DefaultHandler#characters(char[], int, int)
*/
public void characters(char ch[], int start, int length) {
chars.append(new String(ch, start, length));
}
/**
* This is the entry point to the parser and creates the feed to be parsed
*
* @param feedUrl
* @return
*/
public List<Article> getLatestArticles(String feedUrl) {
URL url = null;
try {
SAXParserFactory spf = SAXParserFactory.newInstance();
SAXParser sp = spf.newSAXParser();
XMLReader xr = sp.getXMLReader();
url = new URL(feedUrl);
xr.setContentHandler(this);
xr.parse(new InputSource(url.openStream()));
} catch (IOException e) {
Log.e("RSS Handler IO", e.getMessage() + " >> " + e.toString());
} catch (SAXException e) {
Log.e("RSS Handler SAX", e.toString());
} catch (ParserConfigurationException e) {
Log.e("RSS Handler Parser Config", e.toString());
}
return articleList;
}
}
请，任何答案和建议将非常感谢。 ：）
答案 0 :(得分：0)
很可能是与用户代理相关的问题。
据我所知，您呼叫的网站有一个特殊版本的移动设备，如果检测到您使用的是移动用户代理，则不会为您提供RSS提要。
您可能需要更改它。