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一个socket相关的问题

一个socket相关的问题# Java - 爪哇娇娃

b*d2003-07-24 07:07

1 楼

通过socket 送int数据,
int buffer[10].
但是，write( byte[], off, len ) 要求是byte形。怎么处理？在c++
里，可以用memcpy, or (void *). 请问在Java中如何处理？

e*c2003-07-24 07:07

2 楼

Seems to me you have to use bitwise operation.
Also note java have no unsigned type. so use
byte[] makeBytes(int i){
byte[] bytes = new byte[4];
byte[0] = (i>>24)&FF;
...
heihei
}

【在 b*********d 的大作中提到】

: 通过socket 送int数据,
: int buffer[10].
: 但是，write( byte[], off, len ) 要求是byte形。怎么处理？在c++
: 里，可以用memcpy, or (void *). 请问在Java中如何处理？

m*t2003-07-24 07:07

3 楼

this solution might not work if you are writing to another machine
that has a different ending scheme.
I would use something like:
ObjectOutputStream objOut = new ObjectOutputStream(socket.getOutputStream());
objOut.writeInt(anInt);

【在 e***c 的大作中提到】

: Seems to me you have to use bitwise operation.
: Also note java have no unsigned type. so use
: byte[] makeBytes(int i){
: byte[] bytes = new byte[4];
: byte[0] = (i>>24)&FF;
: ...
: heihei
: }

m*t2003-07-24 07:07

4 楼

That was assuming you are using java on both ends. Otherwise it
can get real tricky on the receiving end, because you have to know
which ending scheme the sender machine uses.

【在 m******t 的大作中提到】

: this solution might not work if you are writing to another machine
: that has a different ending scheme.
: I would use something like:
: ObjectOutputStream objOut = new ObjectOutputStream(socket.getOutputStream());
: objOut.writeInt(anInt);