我需要通过阻塞的输入/输出流将数据从一个进程传递到另一个进程。在JVM世界中有准备使用的东西了吗？
如何使一个过程的输出成为另一过程的输入？
从一个线程可以使用：
InputStream input = process.getInputStream();
OutputStream output = process.getOutputStream();
byte[] buffer = new byte[8192];
int amountRead;
while ((amountRead = input.read(buffer)) != -1) {
output.write(buffer, 0, amountRead);
}
如果要使用两个线程，可以使用PipedInputStream和PipedOutputStream：
PipedOutputStream producer = new PipedOutputStream();
PipedInputStream consumer = new PipedInputStream(producer);
// This thread reads the input from one process, and publishes it to another thread
byte[] buffer = new byte[8192];
int amountRead;
while ((amountRead = input.read(buffer)) != -1) {
producer.write(buffer, 0, amountRead);
}
// This thread consumes what has been published, and writes it to another process
byte[] buffer = new byte[8192];
int amountRead;
while ((amountRead = consumer.read(buffer)) != -1) {
output.write(buffer, 0, amountRead);
}
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