有什么方法可以将PrintWriter转换为ByteArrayOutputStream吗？

Question

I want to convert PrintWriter object into ByteArrayOutputStream. and this I am displaying as a PDF.

Answer 1

I don't know how you are using PrintWriter exactly (please post your code), but instead of converting objects you can write lines directly to ByteArrayOutputStream like this:

ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
PrintWriter pw = new PrintWriter(byteStream);
pw.write("example");
pw.flush();

or (flush after closing PrintWriter ):

ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
PrintWriter pw = new PrintWriter(byteStream);
pw.write("example");
pw.close();

or (auto-flushable):

ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
PrintWriter pw = new PrintWriter(byteStream, true);
pw.println("example");

Let me know whether you prefer other solution and add some more details then(your code).