jsputil.java

来自「一个优秀的供应商管理系统」· Java 代码 · 共 96 行

package apusic.myshop.util;




import java.util.Vector;
import java.text.NumberFormat;
import java.text.DecimalFormat;
import java.text.BreakIterator;
import java.util.Locale;
import java.util.StringTokenizer;

/**
 * This utility class for web tier components (namely Java
 * Server Pages and JavaBeans). This class provides a
 * central location to do specialized formatting in both
 * a default and a locale specfic manner.
 * @author Greg Murray
 */
public final class JSPUtil extends Object {

    //access to eventCounter is only through a synchronized
    //accessor method getEventId()
    private static int eventCounter;

    public static String formatCurrency(double amount){
      NumberFormat nf = NumberFormat.getCurrencyInstance();
      DecimalFormat df = (DecimalFormat)nf;
      df.setMinimumFractionDigits(2);
      df.setMaximumFractionDigits(2);
      df.setDecimalSeparatorAlwaysShown(true);
      String pattern = "$###,###.00";
      df.applyPattern(pattern);
      return df.format(amount);
    }

    public static String formatCurrency(double amount, Locale locale){
      NumberFormat nf = NumberFormat.getCurrencyInstance(locale);
      DecimalFormat df = (DecimalFormat)nf;
      df.setMinimumFractionDigits(2);
      df.setMaximumFractionDigits(2);
      df.setDecimalSeparatorAlwaysShown(true);
      String pattern = "###,###.00";
      df.applyPattern(pattern);
      return df.format(amount);
    }

    public static Vector parseKeywords(String keywordString){
      if (keywordString != null){
        Vector keywords = new Vector();
        BreakIterator breakIt = BreakIterator.getWordInstance();
        int index=0;
        int previousIndex =0;
        breakIt.setText(keywordString);
        try{
          while(index < keywordString.length()){
            previousIndex = index;
            index = breakIt.next();
            String word = keywordString.substring(previousIndex, index);
            if (!word.trim().equals("")) keywords.addElement(word);
          }
          return keywords;
        } catch (Throwable e){
          Debug.print(e, "Error while parsing search string");
        }
	    }
      return null;
    }

    public static Vector parseKeywords(String keywordString, Locale locale){
      if (keywordString != null){
        Vector keywords = new Vector();
        BreakIterator breakIt = BreakIterator.getWordInstance(locale);
        int index=0;
        int previousIndex =0;
        breakIt.setText(keywordString);
        try{
          while(index < keywordString.length()){
            previousIndex = index;
            index = breakIt.next();
            String word = keywordString.substring(previousIndex, index);
            if (!word.trim().equals("")) keywords.addElement(word);
          }
          return keywords;
	      } catch (Throwable e){
          Debug.print(e, "Error while parsing search string" );
        }
	    }
      return null;
    }

    public static synchronized int getEventId(){
      return eventCounter++;
    }
}