我刚刚意识到写入读取套接字的 DataInputStream 和 DataOutputStream 可用于区分即将发生的输入 .
检查此代码：
Server Side. (receiving string or file)
Socket bSock = serverSocket.accept();
DataInputStream inp = new DataInputStream(bSock.getInputStream());
int iCode = inp.readInt();
switch (iCode) {
case Request.STATE_FILESHARING:
byte bp[] = new byte[iCode];
FileOutputStream fos = new FileOutputStream("s.pdf");
BufferedOutputStream bos = new BufferedOutputStream(fos);
int bytesRead = inp.read(bp, 0, bp.length);
bos.write(bp, 0, bytesRead);
bos.close();
break;
case Request.STATE_CONVERSATION:
requestFound = new Request(inp.readUTF());
sendToUI(requestFound);
break;
}
Client Side. (sending string or file)
Socket socket = new Socket(myServerAddress, SocketServerPORT);
DataOutputStream out = new DataOutputStream(socket.getOutputStream());
if (isThisFileMode()) {
File myFile = new File(sLocationFile);
byte[] mybytearray = new byte[(int) myFile.length()];
FileInputStream fis = new FileInputStream(myFile);
BufferedInputStream bis = new BufferedInputStream(fis);
bis.read(mybytearray, 0, mybytearray.length);
out.writeInt(Request.STATE_FILESHARING);
out.write(mybytearray, 0, mybytearray.length);
out.flush();
} else {
out.writeInt(Request.STATE_CONVERSATION);
out.write(obReq.toString().getBytes());
out.flush();
}
但我最终得到了错误 . 系统崩溃了！我忘了添加什么？
1 回答
您正在使用
readUTF()但不是writeUTF().几乎所有DataInputStream和DataOutputStream的方法都是对称的：如果您调用readXXX()，则必须在另一端调用writeXXX().你犯了通常的错误，认为
read()填充了缓冲区 . 它只签约传输至少一个字节 . 你必须循环：