在Java中

Question

使用的DatagramPacket要發送通過我們使用DatagramPacket類的字符串：

String msg = "example"; 
byte[]data = msg.getBytes(); 
DatagramPacket pktOut = new DatagramPacket(data, 0, data.length, dest, port) 

如何通過一個DatagramPacket發送陣列？

int num[] = {50,20,45,82,25,63}; 
//I need to send this over two packets, but I don't know how to deal 
//with arrays when sending them 

預先感謝您

Answer 1

您可以在整數數組轉換成使用ByteBuffer類的字節的緩衝區。

int num[] = { 50 , 20 , 45 , 82 , 25 , 63 }; 
ByteBuffer bb = ByteBuffer.allocate(num.length * 4); 
for (int i : num) { 
    bb.putInt(i); 
} 
byte[] data = bb.array();