msg.java

手机短信编程的源代码

// Useful tools for the communication with the mobile phone
//
// file:    Msg.java
// used by: SMS.java
//
// For comments see header of SMS.java.
//---------------------------------------------------------------------------------------

package smspack;

import java.io.*;
import java.rmi.*;
import java.util.*;
import javax.comm.*;

class Msg {
  private static String portName;
  private static SerialPort port;
  private static OutputStreamWriter out;
  private static InputStreamReader in;

  private static String number;
  private static String message;
  private static boolean numbertype;       // national or international dialing number

  /** sends a SMS over the mobile phone to the GSM network
   * @param dialno dialing number of the destionation
   * @param notype national/international dialing number
   * @param smstext SMS to send
   * @throws java.rmi.RemoteException
   */
  public static void sendSMS(String dialno, boolean notype, String smstext)
    throws java.rmi.RemoteException {

    //----- message will be restricted to 160 characters
    if (smstext.length() > 160) {
      smstext = smstext.substring(0, 160);
      SMS.showText("\nWarning: SMS shorten to 160 characters\n");
    } // if

    SMS.showText("Dialing Number: " + dialno + "\n");
    SMS.showText("Message:        " + smstext + "\n\n");

    //----- build PDU
    SMSTools smstools = new SMSTools();
    byte[] pdu = SMSTools.getPDUPart(dialno, notype, smstext);

    //----- send
    try {
      Port.writeln("AT+CMGF=0");              // set message format to PDU mode
      Port.read();
      Port.writeln("AT+CMGS=" + pdu.length);  // set length of PDU
      Port.read();
      Port.write("00");                       // prepare for the PDU
      Port.write(SMSTools.toHexString(pdu));  // set PDU
      Port.write("\u001A");                   // set Ctrl-Z = indicates end of PDU
      Port.read();
    } // try
    catch (Exception e) {
      SMS.showText("Error: send SMS failed: " + e);
    } // catch
  }  // sendSMS

  /** get SMS from the ME
   *  @param  index of SMS
   *  @return  SMS string of the ME
   *  @throws Exception
   */
  public static String getSMS(int index) throws Exception {
    int p;
    String s="";
    try {
      s = Port.sendAT ("AT+CMGR=" + index);
    } // try
    catch (Exception e) {
      SMS.showText("Error: getSMS failed: " + e);
    } // catch

    //----- destilate the PDU from the received string of raw data
    p = s.indexOf("+CMGR:");    // delete the AT command information at the beginning of the PDU
    s = s.substring(p+6, s.length());
    p = s.indexOf("\n");
    s = s.substring(p+1, s.length());
    p = s.indexOf("\r");        // delete LF / CR at the end of the PDU
    s = s.substring(0, p);

    return s;
  } // getSMS

  /** get number of stored SMS from the ME
   *  @return  number of stored SMS in the ME
   *  @throws Exception
   */
  public static int getNoOfSMS() throws Exception {
    int n=-1;
    int[] index;

    try {
      index = getIndexOfSMS();          // get a index list of stored SMS
      do {                              // search all guilty index of SMS
        n++;
      } while (index[n] != 0);
    }  // try
    catch (Exception e) {
      SMS.showText("Error: getNoOfSMS failed: " + e);
    }  // catch
    return n;
  } // getNoOfSMS

  /** get an index list of guilty SMS from the ME
   *  @return  list of indexes of stored SMS in the ME
   *  @throws Exception
   */
  public static int[] getIndexOfSMS() throws Exception {
    int n, p;
    int[] index;
    index = new int[SMS.MAXNOSIMSMS];
    String s = "", atrsp = "";

    try {
      atrsp = Port.sendAT ("AT+CMGL");
    } // try
    catch (Exception e) {
      SMS.showText("Error: getIndexOfSMS failed: " + e);
    } // catch

    // get a index list from the stored SMS
    // example of answer: "+CMGL: 1,0,,51", 1 is the index of the SMS
    n = 0;
    do {
      p = atrsp.indexOf("+CMGL: ");
      if (p != -1) {                             // found a new PDU
        atrsp = atrsp.substring(p+7, atrsp.length());
        p = atrsp.indexOf(",");
        s = atrsp.substring(0, p);
        index[n] = Integer.parseInt(s.trim());
      } // if
      else break;
      n++;
    } while (p != -1);
    return index;
  } // getIndexOfSMS

  /** delete a SMS from the ME
   *  @param  index of SMS
   *  @throws Exception
   */
  public static void deleteSMS(int index) throws Exception {
    String s="";
    try {
      s = Port.sendAT ("AT+CMGD=" + index);
    } // try
    catch (Exception e) {
      SMS.showText("Error: deleteSMS failed: " + e);
    } // catch
  } // deleteSMS

  /** deletes all SMS from the ME
   *  @throws Exception
   */
  public static void deleteAllSMS() throws Exception {
    int n;
    int[] index;

    try {
      index = getIndexOfSMS();          // get a index list of stored SMS
      n = -1;
      do {
        n++;
        if (index[n] != 0) {          // found a guilty index for a SMS
          SMS.showText("Delete SMS with Index: " + index[n] + "\n");
          deleteSMS(index[n]);
        } // if
      } while (index[n] != 0);
    }  // try
    catch (Exception e) {
      SMS.showText("Error: deleteAllSMS failed: " + e);
    }  // catch
  } // deleteAllSMS

  /** get the signal quality from the ME
   *  @return  received signal strength indication (rssi = 0 ... 31 (best), 99 not known)
   *  @throws Exception
   */
  public static int getSignalQuality() throws Exception {
    int n, p;
    String s = "";

    try {
      s = Port.sendAT ("AT+CSQ");
    } // try
    catch (Exception e) {
      SMS.showText("Error: getSignalQuality failed: " + e);
    } // catch

    // destilate the signal quality from the answer string
    // example of answer: "+CSQ: 31,99"
    if (s.length() > 0) {
      p = s.indexOf(":");
      s = s.substring(p+1, s.length());
      p = s.indexOf(",");
      s = s.substring(0, p);
      n = Integer.parseInt(s.trim());
    } // if
    else n = 99;

    return n;
  } // getSignalQuality

  /** get the battery status from the ME
   *  @return  battery connection status (bcs), battery charge level (bcl)
   *           bcs: 0	     powered by the battery
   *                1	     battery connected, but not powered by it
   *                2	     does not have a battery connected
   *           bcl: 0	     battery is exhausted, or MT does not have a battery connected
   *                1...100  battery has 1 ... 100 percent of capacity remaining
   *  @throws Exception
   */
  public static String getBatteryStatus() throws Exception {
    int p;
    String s = "";

    try {
      s = Port.sendAT ("AT+CBC");
    } // try
    catch (Exception e) {
      SMS.showText("Error: getBatteryStatus failed: " + e);
    } // catch

    // destilate the battery status from the answer string
    // example of answer: "+CBC: 0,90"
    if (s.length() > 0) {
      p = s.indexOf(":");
      s = s.substring(p+1, s.length());
      p = s.indexOf("\r");
      s = s.substring(0, p);
      s = s.trim();
    } // if
    else s = "";

    return s;
  } // getBatteryStatus

  /** test the connection between PC and ME
   * @return  answer string of the ME
   * @throws java.rmi.RemoteException
   */
  public static boolean test() throws java.rmi.RemoteException {
    String s="";

    try {
      Port.writeln("AT");   // test if there is a working communication
      s = Port.read();      // get response from ME
    } // try
    catch (Exception e) {
      SMS.showText("Error: testConnection failed:" + e);
    } // catch
    if (s.indexOf("AT") == 0) return true;  // working connection to the mobile phone
    else return false;                      // no connection to the mobile phone
  }  // test

} // Msg