Servlet how to send response redirect with body data?

Trying to redirect with a body message?

response.sendRedirect(url);Writer writer = response.getWriter();writer.write("some message");write.close();

and

Writer writer = response.getWriter();writer.write("some message");response.sendRedirect(url);write.close();

In both cases, the response body received by http client is empty.

No error messages.

Response body for 302 is not forbidden.

HTTP 302 Redirect - is a message-body needed?