NIO學習筆記七：Pipe

Java NIO 管道是2個線程之間的單向數據鏈接。Pipe有一個source通道和一個sink通道。數據會被寫到sink通道，從source通道讀取。

這裏是Pipe原理的圖示：

 

示例代碼

Pipe pipe=Pipe.open();Pipe.SinkChannel sinkChannel=pipe.sink();ByteBuffer buffer = ByteBuffer.allocate(1024);buffer.put("這是一個測試程序".getBytes("UTF-8"));buffer.flip();while (buffer.hasRemaining()){    sinkChannel.write(buffer);}Pipe.SourceChannel sourceChannel=pipe.source();ByteBuffer byteBuffer = ByteBuffer.allocate(40);int bytesRead =sourceChannel.read(byteBuffer);StringBuilder sb = new StringBuilder();byte b[] =new byte[1024];while (bytesRead !=-1){    byteBuffer.flip();    int index = 0;    while (byteBuffer.hasRemaining()) {        b[index++] = byteBuffer.get();        if (index >= bytesRead) {            index = 0;            sb.append(new String(b, "UTF-8"));            System.out.println(sb.toString());        }    }    byteBuffer.clear();}