無法解析在客戶端側的整個UDP消息

Question

這是在UDP服務器側發送的字符串：
S：0 T：1 FL：4 IP：127.0.0.1，P：9000

我能夠令牌化和打印，直到最後一個字，當我得到這個錯誤：

Exception in thread "Thread-2" java.lang.NumberFormatException: For input string: "9000 
at java.lang.NumberFormatException.forInputString(Unknown Source)  
at java.lang.Integer.parseInt(Unknown Source) 
at java.lang.Integer.parseInt(Unknown Source) 
at com.acn.fog.listener.UdpListener.tokenizeIotIntoPacket(UdpListener.java:119) 
at com.acn.fog.listener.UdpListener.run(UdpListener.java:43) 
at java.lang.Thread.run(Unknown Source) 

Server代碼：

clientSocket = new DatagramSocket(); // make a Datagram socket 
    byte[] sendData = new byte[data.getBytes().length]; // make a Byte array of the data to be sent 
    sendData = data.getBytes(); // get the bytes of the message 
    DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length, IPAddress, port); // craft the message to be sent 
    clientSocket.send(sendPacket); // send the message 

客戶端代碼：

byte[] receiveData = new byte[10000]; // data size not to exceed ~10KB 
    DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length); // receive the response 
    serverSocket.receive(receivePacket); 
    // Tokenize received IOT packet into String 
    String iotPacketString = new String(receivePacket.getData()); 

感謝有關此問題的任何幫助。由於

Answer 1

Unable to parse the entire UDP message at client side

您解析更比整個UDP消息：

String iotPacketString = new String(receivePacket.getData()); 

無效。你忽略了長度。那應該是：

String iotPacketString = new String(receivePacket.getData(), receivePacket.getOffset(), receivePacket.getLength());