parser.java

一个用于手机蓝牙通讯的程序,其中包含了源码和编译过的程序

package gps.parser;

import gps.datatypes.Record;
import gps.exceptions.ParseException;
import gps.exceptions.UnsupportedTypeException;

import java.util.NoSuchElementException;

/**
 * NMEA-0183 Parser. Parses data sent by GPS receiver. As data is being
 * transfered via XML to server, parsing consists in most cases of separating
 * fields.
 *
 * @author Dominik Schmidt
 */
public class Parser {
        /**
         * Type not supported.
         */


        /**
         * Parses a string sent by GPS receiver.
         *
         * @param s
         *            String to be parsed
         * @param record
         *            Record to store data
         * @return Type of record
         * @throws UnsupportedTypeException
         *             If type is not recognized
         * @throws ParseException
         *             If there was an error during parsing
         */
        public static boolean  parse(String s, Record record)
                        throws UnsupportedTypeException, ParseException {

                // Tokenizer to separate tokens
                StringTokenizer tokenizer = new StringTokenizer(s,",");
                // Type of record
                int type;
                String temp ;
                try {
                      if (tokenizer.countTokens()==15) {
                        tokenizer.nextToken();
                        temp = tokenizer.nextToken();
                        // Time of fix
                        record.dateTimeOfFix = calaTime(temp.substring(0,2))+ ":"
                        + temp.substring(2, 4) + ":" + temp.substring(4, 6);
                        // Lattitude
                        record.lattitude = calLatitude(tokenizer.nextToken());
                        // Lattitude direction
                        tokenizer.nextToken();
                        // Longitude
                        record.longitude = calLongitude(tokenizer.nextToken());
                        // Longitude direction
                        tokenizer.nextToken();
                        record.quality = tokenizer.nextToken();
                        record.satelliteCount = tokenizer.nextToken();
                        tokenizer.nextToken();//
                        record.altitude = tokenizer.nextToken();
                        // Ignore rest
                        return true;
                      }
                }
                // Parsing exception.
                catch (NoSuchElementException e) {
                        throw new ParseException("Unexpected end of input.");
                }
                return false;
        }

        /**
         *
         * @param temp
         */
        private static String calaTime(String hour)
        {
                int i ;
                String strHour = null;
                i = Integer.parseInt(hour.substring(0,2));
                i+=8;
                i%=24;
                if (i>9)
                {
                        strHour = String.valueOf(i);
                }

                else
                {
                        strHour ="0"+ String.valueOf(i);
                }

                return strHour;
        }
        private static String calLongitude(String str){
          String strnew = null;
          float i = Float.parseFloat(str.substring(0,3));
          float j = Float.parseFloat(str.substring(3,str.length()))/60;
          strnew = Float.toString(i+j);
          System.out.println(strnew);
          return strnew;
        }

        private static String calLatitude(String str) {

          String strLatitude = null;
          float i = Float.parseFloat(str.substring(0, 2));
          float j = Float.parseFloat(str.substring(2, str.length())) / 60;
          strLatitude = Float.toString(i + j);
         return strLatitude;
        }
//        private static String calAtitude(String str){
//          String strAtitude = null;
//          float i = Float.parseFloat(str.substring(0, 3));
//          float j = Float.parseFloat(str.substring(3, str.length())) / 60;
//          strAtitude = Float.toString(i + j);
//          return strAtitude;
//        }


}