dfi债务融资特点:请教JAVA高手！！！

LZ首先你得搞明白JPEG图像怎么了，JPEG格式图片就不能用字节流传输了么？？如果你说远程传输，你可以考虑使用Socket,URLConnection等类，这些类都会提供getInputStream()或getOutputStream()方法，读或写过程就和本地的一样了

用TCP传就可以了，请用Socket，ServerSocket，DataInputStream，DataOutputStream。
一下是一个例子：
Socket MyClient;
try {
MyClient = new Socket("Machine name", PortNumber);
}
catch (IOException e) {
System.out.println(e);
}

ServerSocket MyService;
try {
MyServerice = new ServerSocket(PortNumber);
}
catch (IOException e) {
System.out.println(e);
}

Socket clientSocket = null;
try {
serviceSocket = MyService.accept();
}
catch (IOException e) {
System.out.println(e);
}

DataInputStream input;
try {
input = new DataInputStream(MyClient.getInputStream());
}
catch (IOException e) {
System.out.println(e);
}

DataInputStream input;
try {
input = new DataInputStream(serviceSocket.getInputStream());
}
catch (IOException e) {
System.out.println(e);
}

PrintStream output;
try {
output = new PrintStream(MyClient.getOutputStream());
}
catch (IOException e) {
System.out.println(e);
}

DataOutputStream output;
try {
output = new DataOutputStream(MyClient.getOutputStream());
}
catch (IOException e) {
System.out.println(e);
}

PrintStream output;
try {
output = new PrintStream(serviceSocket.getOutputStream());
}
catch (IOException e) {
System.out.println(e);
}

详细请查阅参考资料