Sockets Java Blackberry发送定制包
我需要在Java for Blackberry设备中重新创建此功能:Sockets Java Blackberry发送定制包,sockets,networking,blackberry,java-me,Sockets,Networking,Blackberry,Java Me,我需要在Java for Blackberry设备中重新创建此功能: char cPacketData[1024]; int thisPacketLength=( X_PACKET_SPACE*12 ) + ( 20*X_PACKET_SPACE ); (*(int *) (cPacketData)) =X_PACKET_START; (*(int *) (cPacketData+X_PACKET_SPACE)) =thisPacketLength; (
char cPacketData[1024];
int thisPacketLength=( X_PACKET_SPACE*12 ) + ( 20*X_PACKET_SPACE );
(*(int *) (cPacketData)) =X_PACKET_START;
(*(int *) (cPacketData+X_PACKET_SPACE)) =thisPacketLength;
(*(int *) (cPacketData+X_PACKET_SPACE*2)) =X_PACKET_POSITION_DATA;
(*(int *) (cPacketData+X_PACKET_SPACE*3)) =positionX;
(*(int *) (cPacketData+X_PACKET_SPACE*4)) =positionY;
send(mSocket,(const char *)&cPacketData,thisPacketLength,0);
我已经知道我应该使用
OutputStreamWriter
但是我不知道如何用Java重新创建这个包,你能帮我吗
更新
好吧,我想我说对了:
char[] payload = new char[100];
int start=9999;
payload[3] = (char)((start >> 24) & 0XFF);
payload[2] = (char)((start >> 16) & 0XFF);
payload[1] = (char)((start >> 8) & 0XFF);
payload[0] = (char)((start >> 0) & 0XFF);
int len=100;
payload[X_PACKET_SPACE+3] = (char)((len >> 24) & 0XFF);
payload[X_PACKET_SPACE+2] = (char)((len >> 16) & 0XFF);
payload[X_PACKET_SPACE+1] = (char)((len >> 8) & 0XFF);
payload[X_PACKET_SPACE] = (char)((len >> 0) & 0XFF);
_out.write(payload);
看起来很好,有点像“Oldskowl”的方式-所以如果你们有更好的选择,我会很感激
只是确认一下,它是这样工作的。已解决 下面是我如何做到的,这样我的服务器端就可以正确地从BB接收数据包
OutputStream _out = conn.openOutputStream();
packet[3]= (byte)(9999 >>> 24);
packet[2]= (byte)(9999 >>> 16);
packet[1]= (byte)(9999 >>> 8);
packet[0]= (byte)(9999 >>> 0);
packet[8]= (byte)(60 >>> 24);
packet[7]= (byte)(60 >>> 16);
packet[6]= (byte)(60 >>> 8);
packet[5]= (byte)(60 >>> 0);
packet[13]= (byte)(4 >>> 24);
packet[12]= (byte)(4 >>> 16);
packet[11]= (byte)(4 >>> 8);
packet[10]= (byte)(4 >>> 0);
packet[18]= (byte)(_PIN >>> 24);
packet[17]= (byte)(_PIN >>> 16);
packet[16]= (byte)(_PIN >>> 8);
packet[15]= (byte)(_PIN >>> 0);
packet[23]= (byte)(1 >>> 24);
packet[22]= (byte)(1 >>> 16);
packet[21]= (byte)(1 >>> 8);
packet[20]= (byte)(1 >>> 0);
_out.write(packet,0,60);
为了维护类型安全,C代码使用了reinterpret转换,这是Java明确不允许的。对于这种类型的网络代码,您的位移位和掩蔽是我所期望的。