querythestockid.java

股票投资管理系统

package querystock;
import java.net.*;
import java.util.*;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.BufferedReader;


public class QueryTheStockId {

    protected static final String _URL = "http://finance.cn.yahoo.com/fin/finance_search_result.html?s=";
    protected static final String _TOKEN1 = "searbg3";
    //protected static final String _TOKEN2 = "new_price";
    //protected static final String _DELIMITER = "</>\"=";
    protected static final String _DELIMITER = ":</?=.>\"=";
    protected static boolean stocktypeAH=true;

    public static String getLastStockid(String tickerSymbol)
    throws WebsiteDataException, NoSuchTickerException {

        String strURLStart = _URL;
        URL urlWebPage = null;
        InputStreamReader isr = null;
        BufferedReader brWebPage = null;

        // open the web page for reading
        try {
          urlWebPage = new URL(strURLStart + tickerSymbol);
          isr = new InputStreamReader(urlWebPage.openStream());
          brWebPage = new BufferedReader(isr);
        } catch(Exception e) {
          throw new WebsiteDataException();
        }

        // find the line with the stock quote on it
        String strLine = null;
        try {
          while(true) {
            strLine = brWebPage.readLine();
            if(strLine == null)
              {
                throw new NoSuchTickerException("Invalid ticker symbol!");
              }
            if((strLine.indexOf(_TOKEN1) != -1))
              break;
          }
        } catch(IOException e) {
          throw new WebsiteDataException();
        }

        if(strLine.indexOf(_TOKEN1) != -1)
            try {
              for (int i = 7; i >= 1; i--)
                strLine = brWebPage.readLine();
                //System.out.println("A"+strLine);
            } catch(IOException e) {
            throw new WebsiteDataException();
          }

          // find the stock quote in the line
           String strStockValue="";
          StringTokenizer strtok = new StringTokenizer(strLine, _DELIMITER);
  

          while(true) {
            if(strtok.nextToken().compareTo("stock_id") == 0) {
            	//System.out.println("stock_id");
              stocktypeAH = false;
              break;
            }
          }
      
          if(stocktypeAH==false){
              strStockValue = strtok.nextToken("=\">.</") ;
              //System.out.println(strStockValue);
          }else{
        	  strStockValue = null;
          }
          
          
          return strStockValue;
            
    }

    
    
    
    
    
    /*public static void main(String args[]){
  	  try {
  		  getLastStockid("NFHK");
  		getLastStockid("ZSYH");
  		getLastStockid("ZGLT");
  		getLastStockid("JSYH");
  		getLastStockid("ZGSH");
  		System.out.println();
  		//System.out.println(getNameFromTicker("NFHK"));
  	} catch (WebsiteDataException e) {
  		// TODO Auto-generated catch block
  		e.printStackTrace();
  	} catch (NoSuchTickerException e) {
  		// TODO Auto-generated catch block
  		e.printStackTrace();
  	}
    }*/

}