尝试通过同一个sockt发送文件和字符串（在java中）
我需要通过一些sockt（假设端口8478）将文件从服务器发送到客户端，并且还需要按摩（在文件传输的中间）（诸如“嗨”，或“你达到你的极限”或“你达到你的50” %限制”）。
现在只发送文件很容易使用 客户端和服务器端的BufferedInputStrear和BufferedOutputStream。 现在我怎样才能在同一端口（8478）的文件传输中发送消息。
谢谢大家..
这是我传输文件
服务器端的方式：
BufferedInputStream d=new BufferedInputStream(new FileInputStream(s));
BufferedOutputStream outStream = new BufferedOutputStream(cs.getOutputStream());
ObjectOutputStream msgoutStream = new ObjectOutputStream(cs.getOutputStream());
byte buffer[] = new byte[1024];
int read;
while((read = d.read(buffer))!=-1)
{
//msgoutStream.writeUTF("hjlhkhjk");
outStream.write(buffer, 0, read);
outStream.flush();
}
客户端：
byte buffer[] = new byte[1024];
int read;
int f=0;
while((read = d.read(buffer))!=-1)
{
if(ifContinun)
{
System.out.println("strat write to file...");
}
//String s1=msgInPutStream.readLine();
//String s2=msgInPutStream.readUTF();
outStream.write(buffer, 0, read);
outStream.flush();
if(ifContinun)
{
System.out.println("after write to file...");
ifContinun=false;
}
}
i need to send file from server to client through some sockt (lets say port 8478) and also massage(in middel of file transfer ) (somthing like "hi", or "you reach to your limt"or "you reach to your 50% limt").
now to send only file it's easy im using
BufferedInputStrear and BufferedOutputStream in the client and server side.
now how can i send also massage in middel of file transfer in same port (8478).
thank you all..
this how i transfer the file
server side:
BufferedInputStream d=new BufferedInputStream(new FileInputStream(s));
BufferedOutputStream outStream = new BufferedOutputStream(cs.getOutputStream());
ObjectOutputStream msgoutStream = new ObjectOutputStream(cs.getOutputStream());
byte buffer[] = new byte[1024];
int read;
while((read = d.read(buffer))!=-1)
{
//msgoutStream.writeUTF("hjlhkhjk");
outStream.write(buffer, 0, read);
outStream.flush();
}
client side:
byte buffer[] = new byte[1024];
int read;
int f=0;
while((read = d.read(buffer))!=-1)
{
if(ifContinun)
{
System.out.println("strat write to file...");
}
//String s1=msgInPutStream.readLine();
//String s2=msgInPutStream.readUTF();
outStream.write(buffer, 0, read);
outStream.flush();
if(ifContinun)
{
System.out.println("after write to file...");
ifContinun=false;
}
}
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评论（3）
您需要分部分发送文件。您可以发明一个像这样的协议，
这将允许您在同一个套接字中交错多个数据流，并让另一端分解不同的流。
然而，打开两个连接可能要简单得多，这样就不需要这样的协议。例如 FTP 就是这样做的。 ;)
You need to send the file in parts. You can invent a protocol like
This will allow you to interleave multiple streams of data in the same socket and have the other end break up the different streams.
However, its likely to be much simpler to open two connections which avoids the need for a protocol like this. e.g. FTP does this. ;)
为此，您需要在 TCP 之上定义一个协议。例如，协议可以是：
In order to do this, you need to define a protocol on top of TCP. For example, the protocol can be:
一种方法是使用一些转义代码来指示何时从文件传输更改为文本传输，反之亦然。由于二进制文件可能包含转义码，因此您必须以某种方式传递这些代码。
但消息协议是更好的选择。
One way is to use some escape code to indicate when changing from file transfer to text transefer, and vice versa. Because a binary file may contain your escape codes, you must hand those some how.
But message protocol is preferable.