public String toQueryString()
   {
      try
      {
         StringBuffer result = new StringBuffer();

         if ((null != parameters) && !parameters.isEmpty())
         {
            result.append("?");
            Iterator<Entry<String, List<String>>> iterator = parameters.entrySet().iterator();
            while (iterator.hasNext())
            {
               Entry<String, List<String>> entry = iterator.next();
               String key = entry.getKey();
               List<String> values = entry.getValue();

               if ((key != null) && !"".equals(key))
               {
                  key = URLEncoder.encode(key, "UTF-8");
                  result.append(key);

                  if ((values != null) && !values.isEmpty())
                  {
                     for (int i = 0; i < values.size(); i++)
                     {
                        String value = values.get(i);
                        if ((value != null) && !"".equals(value))
                        {
                           value = URLEncoder.encode(value, "UTF-8");
                           result.append("=" + value);
                        }
                        else if ((value != null) && "".equals(value))
                        {
                           result.append("=");
                        }

                        if (i < values.size() - 1)
                        {
                           result.append("&" + key);
                        }
                     }
                  }
               }

               if (iterator.hasNext())
               {
                  result.append("&");
               }
            }
         }

         return result.toString();
      }
      catch (UnsupportedEncodingException e)
      {
         throw new PrettyException("Error building query string.", e);
      }
   }
public String toQueryString()
   {
      try
      {
         StringBuffer result = new StringBuffer();

         if ((null != parameters) && !parameters.isEmpty())
         {
            result.append("?");
            Iterator<Entry<String, List<String>>> iterator = parameters.entrySet().iterator();
            while (iterator.hasNext())
            {
               Entry<String, List<String>> entry = iterator.next();
               String key = entry.getKey();
               List<String> values = entry.getValue();

               if ((key != null) && !"".equals(key))
               {
                  key = URLEncoder.encode(key, "UTF-8");
                  result.append(key);

                  if ((values != null) && !values.isEmpty())
                  {
                     for (int i = 0; i < values.size(); i++)
                     {
                        String value = values.get(i);
                        if ((value != null) && !"".equals(value))
                        {
                           value = URLEncoder.encode(value, "UTF-8");
                           result.append("=" + value);
                        }
                        else if ((value != null) && "".equals(value))
                        {
                           result.append("=");
                        }

                        if (i < values.size() - 1)
                        {
                           result.append("&" + key);
                        }
                     }
                  }
               }

               if (iterator.hasNext())
               {
                  result.append("&");
               }
            }
         }

         return result.toString();
      }
      catch (UnsupportedEncodingException e)
      {
         throw new PrettyException("Error building query string.", e);
      }
   }
public String toQueryString ( ) { try { StringBuffer result = new StringBuffer ( ) ; if ( ( null != parameters ) && ! parameters . isEmpty ( ) ) { result . append ( "?" ) ; Iterator < Entry < String , List < String > > > iterator = parameters . entrySet ( ) . iterator ( ) ; while ( iterator . hasNext ( ) ) { Entry < String , List < String > > entry = iterator . next ( ) ; String key = entry . getKey ( ) ; List < String > values = entry . getValue ( ) ; if ( ( key != null ) && ! "" . equals ( key ) ) { key = URLEncoder . encode ( key , "UTF-8" ) ; result . append ( key ) ; if ( ( values != null ) && ! values . isEmpty ( ) ) { for ( int i = 0 ; i < values . size ( ) ; i ++ ) { String value = values . get ( i ) ; if ( ( value != null ) && ! "" . equals ( value ) ) { value = URLEncoder . encode ( value , "UTF-8" ) ; result . append ( "=" + value ) ; } else if ( ( value != null ) && "" . equals ( value ) ) { result . append ( "=" ) ; } if ( i < values . size ( ) - 1 ) { result . append ( "&" + key ) ; } } } } if ( iterator . hasNext ( ) ) { result . append ( "&" ) ; } } } return result . toString ( ) ; } catch ( UnsupportedEncodingException e ) { throw new PrettyException ( "Error building query string." , e ) ; } }
Convert the current parameters to a valid query string, including the leading '?' character. This method
automatically URLEncodes query-parameter values
<p>

For example, a {@link QueryString} with the values [key=>value, name=>value1,value2,value3] will become:

<pre>

?key=value&name=value1&name=value2&name=value3
</pre>

@return If parameters exist, return a valid query string with leading '?' character. If no parameters exist,
return an empty string.
Convert the current parameters to a valid query string including the leading ? character . This method automatically URLEncodes query - parameter values <p >