NIO学习笔记七：Pipe

Java NIO 管道是2个线程之间的单向数据连接。Pipe有一个source通道和一个sink通道。数据会被写到sink通道，从source通道读取。

这里是Pipe原理的图示：

示例代码

Pipe pipe=Pipe.open();
Pipe.SinkChannel sinkChannel=pipe.sink();
ByteBuffer buffer = ByteBuffer.allocate(1024);
buffer.put("这是一个测试程序".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();
}