Question

java如何把outputStream流转换成ByteArrayOutputStream或者InputStream或者String急急急！

Answer 1

ByteArrayOutputStream baos=ByteArrayOutputStream（outputStream）;
outputStream是OutputStream对象实例。

Answer 2

挖个坟供后人用。。。ByteArrayOutputStream arrayoutputStream = new ByteArrayOutputStream();
arrayoutputStream .writeTo(outputStream);