英文:
Write from one OutputStream to another InputStream
问题
我想在一个类中拥有一个类似这样的InputStream：
class A {
InputStream inputStream = ...
}
然后，我想使用另一个在同一应用程序中的类中的OutputStream向该InputStream写入。这种做法可行吗？
英文:
I want to have an InputStream in a class like this:
class A {
InputStream inputStream = ...
}
And I want to write to that InputStream using a OutputStream from another class which is in the same application. Is it possible to do this?
答案1
得分: 1
是的，就是这样！你需要使用 PipedOutputStream（参见）和 PipedInputStream（参见）。
以下是一个简单的示例，演示如何使用它：
public static void main(String[] args) throws ParseException, IOException {
PipedInputStream inputStream = new PipedInputStream();
PipedOutputStream outputStream = new PipedOutputStream(inputStream);
// 向输出流写入一些数据
writeDataToOutputStream(outputStream);
// 现在读取那些数据
Scanner src = new Scanner(inputStream);
System.out.println(src.nextLine());
}
private static void writeDataToOutputStream(OutputStream outputStream) throws IOException {
outputStream.write("Hello!\n".getBytes());
}
这段代码将输出：
Hello!
英文:
Yes it is! PipedOutputStream (see) and a PipedInputStream (see) is what you need.
Here is a little example how to use it:
public static void main(String[] args) throws ParseException, IOException {
PipedInputStream inputStream = new PipedInputStream();
PipedOutputStream outputStream = new PipedOutputStream(inputStream);
// Write some data to the output stream
writeDataToOutputStream(outputStream);
// Now read that data
Scanner src = new Scanner(inputStream);
System.out.println(src.nextLine());
}
private static void writeDataToOutputStream(OutputStream outputStream) throws IOException {
outputStream.write("Hello!\n".getBytes());
}
The code will output:
Hello!
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