95 lines
3.5 KiB
Java
95 lines
3.5 KiB
Java
package net.woodyfolsom.cs6601.p3.svc;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.net.HttpURLConnection;
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import java.net.MalformedURLException;
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import java.net.URL;
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import java.net.URLConnection;
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import java.text.DateFormat;
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import java.text.SimpleDateFormat;
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import java.util.ArrayList;
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import java.util.Date;
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import java.util.List;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import net.woodyfolsom.cs6601.p3.dao.HeadlineDao;
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import net.woodyfolsom.cs6601.p3.domain.Headline;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Service;
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@Service
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public class YahooHeadlineServiceImpl implements HeadlineService {
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private Log log = LogFactory.getLog(YahooHeadlineServiceImpl.class);
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private static final DateFormat DATE_FORMATTER = new SimpleDateFormat("yyyy-MM-dd");
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private static final String STORY_DATE_FIELD = "STORY_DATE";
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private static final String STOCK_SYMBOL_FIELD = "STOCK_SYMBOL";
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private static final String QUERY_URL = "http://query.yahooapis.com/v1/public/yql?q=select%20content%20from%20html%20where%20url%3D%22http%3A%2F%2Ffinance.yahoo.com%2Fq%2Fh%3Fs%3DSTOCK_SYMBOL%26t%3DSTORY_DATE%22%20and%20xpath%3D'%2F%2Fdiv%5B%40class%3D%22mod%20yfi_quote_headline%20withsky%22%5D%2Ful%2Fli%2Fa'";
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@Override
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public int insertHeadline(Headline headline) {
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throw new UnsupportedOperationException("This implementation does not support inserting headlines.");
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}
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@Override
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public int[] insertHeadlines(List<Headline> headline) {
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throw new UnsupportedOperationException("This implementation does not support inserting headlines.");
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}
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@Override
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public List<Headline> getHeadlines(String stock, Date date) {
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List<Headline> headlineList = new ArrayList<Headline>();
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try {
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URL url = new URL(populateQueryURL(stock,date));
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HttpURLConnection connection = (HttpURLConnection)url.openConnection();
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connection.setRequestMethod("GET");
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connection.setReadTimeout(10000);
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connection.connect();
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BufferedReader buf = new BufferedReader(new InputStreamReader(connection.getInputStream()));
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String line;
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StringBuilder sb = new StringBuilder();
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while ((line = buf.readLine()) != null) {
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sb.append(line);
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}
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buf.close();
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String xmlResults = sb.toString();
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Pattern pattern = Pattern.compile("<a>.*?</a>");
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Matcher matcher = pattern.matcher(xmlResults);
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while (matcher.find()) {
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String anchorValue = xmlResults.substring(matcher.start()+3,matcher.end()-4);
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headlineList.add(new Headline(stock,anchorValue,date,1));
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}
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} catch (MalformedURLException mue) {
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log.warn("Caught MalformedURLException: " + mue.getMessage() + ", returning empty Headline list.");
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} catch (IOException ioe) {
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log.warn("Caught IOException: " + ioe.getMessage() + ", returning empty Headline list.");
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}
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return headlineList;
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}
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private String populateQueryURL(String stock, Date date) {
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String formattedDate = DATE_FORMATTER.format(date);
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return QUERY_URL.replaceAll(STOCK_SYMBOL_FIELD, stock).replaceAll(STORY_DATE_FIELD, formattedDate);
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}
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@Override
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public List<Headline> getHeadlines(String stock, Date startDate,
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Date endDate) {
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throw new UnsupportedOperationException("This implementation does not support getting headlines for a date range.");
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}
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} |