管道流PipedInputStream 和PipedOutputStream
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管道流一般不用于单线程,避免死锁,
一般用两个线程,一个读一个写 各干各的,
import java.io.*;
import java.io.*;
//读线程
public class Read implements Runnable {
private PipedInputStream in;
public Read(PipedInputStream in) {
this.in = in;
}
@Override
public void run() {
try {
byte[] buf = new byte[1024];
int len =0;
while((len =in.read(buf))!=-1){
System.out.println(new String (buf,0,len));
in.close();
}
} catch (Exception e) {
throw new RuntimeException("管道流读取失败!");
}
}
}
import java.io.*;
//写线程
public class Write implements Runnable {
private PipedOutputStream out;
public Write(PipedOutputStream out) {
this.out = out;
}
@Override
public void run() {
BufferedInputStream buffi = null;
try {
System.out.println("请从键盘输入");
byte[] buf = new byte[1024];
while (true) {
buffi = new BufferedInputStream(System.in);
if (!(buffi.toString().equals("ok"))) {
int len = buffi.read(buf);
out.write(buf, 0, len);
} else {
buffi.close();
out.close();
}
}
} catch (Exception e) {
throw new RuntimeException("管道流写入失败!");
}
}
}
//主线程测试
import java.io.*;
public class PipedStream {
/**
* @param args
* @throws IOException
*/
public static void main(String[] args) throws IOException {
PipedOutputStream out =new PipedOutputStream();
PipedInputStream in = new PipedInputStream();
in.connect(out);
Read r = new Read(in);
Write w = new Write(out);
new Thread(r).start();
new Thread(w).start();
}
}
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