java - 收到的 UDP 消息长度不正确

Question

我正在从 DatagramSocket 接收一条 UDP 消息，并尝试像这样解析该消息:

this.broadSock.receive(recvPacket);

// Decode response
byte[] response = recvPacket.getData();
String strResp = new String(response);
String[] splitResp = strResp.split("\\s+");
log.debug("The String: " + strResp + " has the length " + strResp.length());

InetAddress lobbyAdress = InetAddress.getByName(splitResp[0].substring(1));
String portStr = splitResp[1];
int lobbyPort = Integer.parseInt(portStr);

我收到以下异常:

java.lang.NumberFormatException: For input string: "8080"

因此，调试输出给出的接收字符串有问题:

The String: /192.168.0.11 8080 has the length 256

有人知道为什么会发生这种情况吗？

Answer 1

提供了长度，但您忽略了它。应该是:

String strResp = new String(packet.getData(), packet.getOffset(), packet.getLength());
String[] splitResp = strResp.split("\\s+");
log.debug("The response: " + strResp + " has the length " + packet.length());