public String getCharacterEncoding()
Returns the name of the character encoding used in the body of this request.
This method returns null if the request
does not specify a character encoding.

 public int getContentLength()
Returns the length, in bytes, of the request body
which is made available by the input stream, or -1 if the
length is not known.

 public String getContentType()
Returns the MIME type of the body of the request,
or null if the type is not known.

 public InputStream getPortletInputStream() throws IOException
Retrieves the body of the HTTP request from client to
portal as binary data using
an InputStream. Either this method or
#getReader  may be called to read the body, but not both.

For HTTP POST data of type application/x-www-form-urlencoded
this method throws an IllegalStateException
as this data has been already processed by the
portal/portlet-container and is available as request parameters.

 public BufferedReader getReader() throws UnsupportedEncodingException, IOException
Retrieves the body of the HTTP request from the client to the portal
as character data using
a BufferedReader. The reader translates the character
data according to the character encoding used on the body.
Either this method or #getPortletInputStream  may be called to read the
body, not both.

For HTTP POST data of type application/x-www-form-urlencoded
this method throws an IllegalStateException
as this data has been already processed by the
portal/portlet-container and is available as request parameters.

 public  void setCharacterEncoding(String enc) throws UnsupportedEncodingException
Overrides the name of the character encoding used in the body of this
request. This method must be called prior to reading input
using #getReader  or #getPortletInputStream .

This method only sets the character set for the Reader that the
#getReader  method returns.