在Java中獲得AT COMMAND的意外結果

Question

import gnu.io.*;
import java.io.*;
import java.util.*;
import java.lang.*;

public class SerialWrite implements Runnable, SerialPortEventListener{

    static String output="";

    public void run(){
    }

    static Enumeration portList;
    static CommPortIdentifier portId;
    static String dest = "+923216159133";
    static String messageString = "Hello Testing";
    static InputStream inputStream;
    static SerialPort serialPort;
    static OutputStream outputStream;

    public void serialEvent(SerialPortEvent event){
        switch (event.getEventType()){
            case SerialPortEvent.BI:
            case SerialPortEvent.OE:
            case SerialPortEvent.FE:
            case SerialPortEvent.PE:
            case SerialPortEvent.CD:
            case SerialPortEvent.CTS:
            case SerialPortEvent.DSR:
            case SerialPortEvent.RI:
            case SerialPortEvent.OUTPUT_BUFFER_EMPTY:
                System.out.println("Error");
            break;
            case SerialPortEvent.DATA_AVAILABLE:{
                BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
                String line = "";
                try{
                    while ( (line = reader.readLine()) != null){
                        if(line.equalsIgnoreCase("OK") || (line.indexOf("+CMGS") != -1)){
                            output=line;
                        }
                    Thread.sleep(10);
                    }
                }
                catch (Exception e){
                    System.err.println("Error while reading Port " + e);
                }
            break;
        }
    } //switch
}

public SerialWrite(SerialPort serial){
    try{
        inputStream = serial.getInputStream();
        try{
            serial.addEventListener(this);
        }
        catch (TooManyListenersException e){
            System.out.println("Exception in Adding Listener" + e);
        }
        serial.notifyOnDataAvailable(true);
    }
    catch (Exception ex){
        System.out.println("Exception in getting InputStream" + ex);
    }
}

public static void main(String[] args) throws Exception{
    int i=0;
    String line1 = "AT+CMGF=1\r\n";
    String line2 = "AT+CMGS=" + "\"" + dest + "\""+"\r\n";
    System.out.println("This " + line2);
    String line3 = messageString;
    String line4 = "<ctrl+z>";
    portList = CommPortIdentifier.getPortIdentifiers();
    while (portList.hasMoreElements()){
        portId = (CommPortIdentifier) portList.nextElement();
        if (portId.getPortType() == CommPortIdentifier.PORT_SERIAL){
            System.out.println("SMS Sending........");
            if ( portId.getName().equals("COM3")){
                System.out.println("SMS Sending....Port Found");
                try{
                    serialPort = (SerialPort) portId.open("SerialTestApp", 2000);
                    SerialWrite wr = new SerialWrite(serialPort);
                }
                catch (PortInUseException e){
                    System.out.println("Port In Use " + e);
                }
                try{
                    outputStream = serialPort.getOutputStream();
                }
                catch (IOException e){
                    System.out.println("Error writing to output stream " + e);
                }
                try{
                    serialPort.setSerialPortParams(9600,SerialPort.DATABITS_8,SerialPort.STOPBITS_1,SerialPort.PARITY_NONE);
                }
                catch (UnsupportedCommOperationException e){
                    System.out.println("Error");
                }
                try{
                    System.out.println("It seems OK now");
                    outputStream.write(line1.getBytes());
                    byte buffer[] = new byte[10000];
                    // read the response from mobile phone
                    inputStream.read(buffer);
                    System.out.println("AT Comand response: "+buffer.toString());
                    /*System.out.println ("done");
                    outputStream.write(line2.getBytes());
                    System.out.println("It seems OK now");
                    outputStream.write(line3.getBytes());
                    outputStream.write(line4.getBytes());
                    System.out.println("This one is output "+output);
                    outputStream.flush();
                    System.out.println("Message Sent!");*/
                }
                catch (IOException e){
                    System.out.println("Error writing message " + e);
                }
            }
        }
    }
}


public static void showText(String Text){
    System.out.println("TEXT "+Text);
    }
}

我想先使用GSM PHONE（諾基亞110）發送消息，我嘗試發送“ AT”命令，但收到的響應是意外的，如下所示：

SMS Sending........
SMS Sending....Port Found
It seems OK now
**AT Comand response: [B@3820e**
SMS Sending........
SMS Sending........
SMS Sending........
SMS Sending........

其次，當我在沒有COMMENTS的情況下運行整個程序時，我的手機最終會重啟。 誰能幫我這個忙。

Answer 1

您需要更改打印接收到的字節數組內容的方式：

String str = new String(buffer);
System.out.println(str);

代替： buffer.toString() ，它將打印緩沖區數組的哈希碼。 這是您從設備看到的響應。

至於第二部分，在注釋掉的代碼中，嘗試取消注釋： outputStream.flush(); ，則設備可能仍在等待AT命令，並且該命令尚未刷新到其輸入流。