在線六角到文本解碼器

I was trying to append the Hexa decimal value 'F' to the string which contains some data.

Example:

std:string myString = "1234567";

Now I want to append the Hex Value 'F' in the end of the string.

The user of the string could able to identify the last value is HEXDecimal. is there a way to store the Hex value in string ?

Expected output: myString as 1234567F.

Any idea how to do it in c++ ?

I have a Hex String which reads 18000000 this String is in Host byte order (Little endian) and I need to convert it to Network byte order (Big endian). The resultant Hex String will be 00000018.

To summarize I need to convert18000000 to 00000018

How do I achieve this in PHP?

There is a hex data in client :

MESSAGE = "\x16\x01\x12\x03\x1b\x14\x30\x23\x80\x00\x03\xe8\x00\x00\x00\x00"s.sendto(MESSAGE, (UDP_IP, UDP_PORT))

and server would show :

16 01 12 03 1b 14 30 23 80 00 03 e8 00 00 00 00

but when I want to use variable and for loop to increase the last number

for i in range(times):     i += 1     i = format(i, '02x')MESSAGE = "\x16\x01\x12\x03\x1b\x14\x30\x23\x80\x00\x03\xe8\x00\x00\x00"+is.sendto(MESSAGE, (UDP_IP, UDP_PORT))

server would show:

16 01 12 03 1b 14 30 23 80 00 03 e8 00 00 00 30 32

The "+i" become ASCII....

So how should I do to make the server show:

16 01 12 03 1b 14 30 23 80 00 03 e8 00 00 00 0116 01 12 03 1b 14 30 23 80 00 03 e8 00 00 00 0216 01 12 03 1b 14 30 23 80 00 03 e8 00 00 00 03...

Thanks!

I have this string: Hello world !! and I want to print it using Python as 48:65:6c:6c:6f:20:77:6f:72:6c:64:20:21:21.

hex() works only for integers.

How can it be done?

I'am trying to convert the byte array to HEX String. Below is my byte to string conversion method,

public static String toHexString(byte[] bytes) {    char[] hexArray = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};    char[] hexChars = new char[bytes.length * 2];    int v;    for ( int j = 0; j < bytes.length; j++ ) {        v = bytes[j] & 0xFF;        hexChars[j*2] = hexArray[v/16];        hexChars[j*2 + 1] = hexArray[v%16];    }    return new String(hexChars);}

The issue is, the data what sender is sending is something like this

00 4A 60 01 02 03 04 02 10 30 38 00 00 0E 80 02 00 00 00 00 00 00 00 00 31 00 00 46 74 16 54 28 12 11 38 33 34 35 31 36 30 30 34 36 37 34 31 36 35 34 32 39 30 30 36 32 37 30 35 35 32 34 00 12 91 0A 59 21 8C DA FB BC D2 52 00 14

and what I'm getting after conversion is something like this

00 4A 60 01 02 03 04 02 10 30 38 00 00 0E EF BF BD 02 00 00 00 00 00 00 00 00 31 00 00 46 74 16 54 28 12 11 38 33 34 35 31 36 30 30 34 36 37 34 31 36 35 34 32 39 30 30 36 32 37 30 35 35 32 34 00 12 EF BF BD

while most of the data is similar, but "EFBFBD" data is coming somehow.

UPDATE

The complete code required for assessment of problem:

import java.io.BufferedReader;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.OutputStream;import java.net.InetAddress;import java.net.InetSocketAddress;import java.net.Socket;public class TCPClient {private static final String TAG = "TCPRequest";public static final String SERVER_IP = "X.X.X.X"; //server IP addresspublic static final int SERVER_PORT = xxxx;private String mServerMessage;// sends message received notificationsprivate OnMessageReceived mMessageListener = null;// while this is true, the server will continue runningprivate boolean mRun = false;// used to send messagesprivate OutputStream mOutStream;private InputStream mInStream;// used to read messages from the serverprivate BufferedReader mBufferIn;byte[] bMsg = new byte[100];int byteArr;/** * Constructor of the class. OnMessagedReceived listens for the messages received from server */public TCPClient(OnMessageReceived listener) {    mMessageListener = listener;}/** * Sends the message entered by client to the server * * @param message text entered by client */public void sendMessage(final String message) {    Runnable runnable = new Runnable() {        @Override        public void run() {            if (mOutStream != null) {                try {                    byte[] bMessage = BytesUtil.hexStringToByteArray(message);                    mOutStream.write(bMessage, 0, bMessage.length);                    mOutStream.flush();                } catch (IOException e) {                    e.printStackTrace();                }            }        }    };    Thread thread = new Thread(runnable);    thread.start();}/** * Close the connection and release the members */public void stopClient() throws IOException {    mRun = false;    if (mOutStream != null) {        mOutStream.flush();        mOutStream.close();    }    mMessageListener = null;    mServerMessage = null;    mOutStream = null;    mInStream = null;}public void run() {    mRun = true;    try {        //here you must put your computer's IP address.        InetAddress serverAddr = InetAddress.getByName(SERVER_IP);        PrintLog.log("TCP Client", "C: Connecting...");        //create a socket to make the connection with the server        //Socket socket = new Socket(SERVER_IP, SERVER_PORT);        Socket socket = new Socket();        socket.connect(new InetSocketAddress(SERVER_IP, SERVER_PORT), 100000);        sendMessage("requestData");        if (socket.isConnected()) {            PrintLog.log("CONNECTED...");        } else {            PrintLog.log("NOT CONNECTED: ");        }        try {            //sends the message to the server            mOutStream = socket.getOutputStream();            //receives the message which the server sends back            mBufferIn = new BufferedReader(new InputStreamReader(socket.getInputStream()));            //in this while the client listens for the messages sent by the server            while (mRun) {                bMsg = mBufferIn.readLine().getBytes();                PrintLog.log(TAG, "Byte Array Response (Local): " + toHexString(bMsg));                mServerMessage = new String(bMsg);                PrintLog.log(TAG, "Listening message...");                if (mServerMessage != null && mMessageListener != null) {                    //call the method messageReceived from MyActivity class                    mMessageListener.messageReceived(mServerMessage);                }            }            PrintLog.log("RESPONSE FROM SERVER", "S: Received Message: '" + String.valueOf(mServerMessage) + "'");        } catch (Exception e) {            PrintLog.log("TCP", "S: Error" + e);        } finally {            //the socket must be closed. It is not possible to reconnect to this socket            // after it is closed, which means a new socket instance has to be created.            socket.close();        }    } catch (Exception e) {        PrintLog.log("TCP", "C: Error" + e);    }}public static String toHexString(byte[] bytes) {    char[] hexArray = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};    char[] hexChars = new char[bytes.length * 2];    int v;    for ( int j = 0; j < bytes.length; j++ ) {        v = bytes[j] & 0xFF;        hexChars[j*2] = hexArray[v/16];        hexChars[j*2 + 1] = hexArray[v%16];    }    return new String(hexChars);}//Declare the interface. The method messageReceived(String message) will must be implemented in the Activity//class at on AsyncTask doInBackgroundpublic interface OnMessageReceived {    public void messageReceived(String message);}static String convertStreamToString(java.io.InputStream is) {    java.util.Scanner s = new java.util.Scanner(is).useDelimiter("\\A");    return s.hasNext() ? s.next() : "";}

}

Please help me solve this.

Thanks in advance.