org.mmbase.util
Class GenericResponseWrapper

java.lang.Object
  javax.servlet.ServletResponseWrapper
      javax.servlet.http.HttpServletResponseWrapper
          org.mmbase.util.GenericResponseWrapper

All Implemented Interfaces:

HttpServletResponse, ServletResponse

public class GenericResponseWrapper
extends HttpServletResponseWrapper

Wrapper around the response. It collects all data that is sent to it, and makes it available through a toString() method. It is used by taglib's Include-Tag, but it might find more general use, outside taglib.

Since:

MMBase-1.7

Version:

$Id: GenericResponseWrapper.java 41036 2010-02-15 22:30:54Z michiel $

Author:

Kees Jongenburger, Johannes Verelst, Michiel Meeuwissen

Field Summary

protected String	redirected
static String	TEXT_XML_DEFAULT_CHARSET

Fields inherited from interface javax.servlet.http.HttpServletResponse

SC_ACCEPTED, SC_BAD_GATEWAY, SC_BAD_REQUEST, SC_CONFLICT, SC_CONTINUE, SC_CREATED, SC_EXPECTATION_FAILED, SC_FORBIDDEN, SC_FOUND, SC_GATEWAY_TIMEOUT, SC_GONE, SC_HTTP_VERSION_NOT_SUPPORTED, SC_INTERNAL_SERVER_ERROR, SC_LENGTH_REQUIRED, SC_METHOD_NOT_ALLOWED, SC_MOVED_PERMANENTLY, SC_MOVED_TEMPORARILY, SC_MULTIPLE_CHOICES, SC_NO_CONTENT, SC_NON_AUTHORITATIVE_INFORMATION, SC_NOT_ACCEPTABLE, SC_NOT_FOUND, SC_NOT_IMPLEMENTED, SC_NOT_MODIFIED, SC_OK, SC_PARTIAL_CONTENT, SC_PAYMENT_REQUIRED, SC_PRECONDITION_FAILED, SC_PROXY_AUTHENTICATION_REQUIRED, SC_REQUEST_ENTITY_TOO_LARGE, SC_REQUEST_TIMEOUT, SC_REQUEST_URI_TOO_LONG, SC_REQUESTED_RANGE_NOT_SATISFIABLE, SC_RESET_CONTENT, SC_SEE_OTHER, SC_SERVICE_UNAVAILABLE, SC_SWITCHING_PROTOCOLS, SC_TEMPORARY_REDIRECT, SC_UNAUTHORIZED, SC_UNSUPPORTED_MEDIA_TYPE, SC_USE_PROXY

Constructor Summary

GenericResponseWrapper(HttpServletResponse resp)
Public constructor

GenericResponseWrapper(HttpServletResponse resp, String encoding)
Sets also a value for the characterEncoding which must be supposed.

Method Summary

void	addCookie(Cookie c)
void	addDateHeader(String arg0, long arg1)
void	addHeader(String arg0, String arg1)
void	addIntHeader(String arg0, int arg1)
boolean	containsHeader(String arg0)
protected byte[]	determinXMLEncoding()
String	encodeRedirectURL(String arg0)
String	encodeURL(String arg0)
String	getCharacterEncoding() Returns the name of the charset used for the MIME body sent in this response.
static String	getDefaultEncoding(String contentType) Supposes that no explicit charset is mentioned in a contentType, and returns a default.
static String	getEncoding(String contentType) Takes the value of a Content-Type header, and tries to find the encoding from it.
HttpServletResponse	getHttpServletResponse() Gets the response object which this wrapper is wrapping.
Locale	getLocale()
ServletOutputStream	getOutputStream() Return the OutputStream.
String	getRedirected()
PrintWriter	getWriter() Return the PrintWriter
static String	getXMLEncoding(byte[] allBytes) Takes a ByteArrayInputStream, which is considered to be (the first) part of an XML, and returns the encoding.
static String	getXMLEncoding(String xmlString) Takes a String, which is considered to be (the first) part of an XML, and returns the encoding (the specified one, or the XML default)
void	sendError(int arg0)
void	sendError(int arg0, String arg1)
void	sendRedirect(String location)
void	setContentType(String ct) Sets the content type of the response being sent to the client.
void	setDateHeader(String arg0, long arg1)
void	setHeader(String header, String value)
void	setIntHeader(String arg0, int arg1)
void	setLocale(Locale arg0)
void	setStatus(int s)
String	toString() Return all data that has been written to the PrintWriter.

Methods inherited from class javax.servlet.http.HttpServletResponseWrapper

encodeRedirectUrl, encodeUrl, setStatus

Methods inherited from class javax.servlet.ServletResponseWrapper

flushBuffer, getBufferSize, getContentType, getResponse, isCommitted, reset, resetBuffer, setBufferSize, setCharacterEncoding, setContentLength, setResponse

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface javax.servlet.ServletResponse

flushBuffer, getBufferSize, getContentType, isCommitted, reset, resetBuffer, setBufferSize, setCharacterEncoding, setContentLength

Field Detail

TEXT_XML_DEFAULT_CHARSET

public static String TEXT_XML_DEFAULT_CHARSET

redirected

protected String redirected

Constructor Detail

GenericResponseWrapper

public GenericResponseWrapper(HttpServletResponse resp)

Public constructor

GenericResponseWrapper

public GenericResponseWrapper(HttpServletResponse resp,
                              String encoding)

Sets also a value for the characterEncoding which must be supposed. Normally it would be determined automaticly right, but if for some reason it doesn't you can override it.

Method Detail

getHttpServletResponse

public HttpServletResponse getHttpServletResponse()

Gets the response object which this wrapper is wrapping. You might need this when giving a redirect or so.

Since:

MMBase-1.7.1

sendRedirect

public void sendRedirect(String location)
                  throws IOException

Specified by:

sendRedirect in interface HttpServletResponse

Overrides:

sendRedirect in class HttpServletResponseWrapper

Throws:

IOException

getRedirected

public String getRedirected()

Since:

MMBase-1.8.5

setStatus

public void setStatus(int s)

Specified by:

setStatus in interface HttpServletResponse

Overrides:

setStatus in class HttpServletResponseWrapper

addCookie

public void addCookie(Cookie c)

Specified by:

addCookie in interface HttpServletResponse

Overrides:

addCookie in class HttpServletResponseWrapper

setHeader

public void setHeader(String header,
                      String value)

Specified by:

setHeader in interface HttpServletResponse

Overrides:

setHeader in class HttpServletResponseWrapper

addDateHeader

public void addDateHeader(String arg0,
                          long arg1)

Specified by:

addDateHeader in interface HttpServletResponse

Overrides:

addDateHeader in class HttpServletResponseWrapper

See Also:

HttpServletResponse.addDateHeader(java.lang.String, long)

addHeader

public void addHeader(String arg0,
                      String arg1)

Specified by:

addHeader in interface HttpServletResponse

Overrides:

addHeader in class HttpServletResponseWrapper

See Also:

HttpServletResponse.addHeader(java.lang.String, java.lang.String)

addIntHeader

public void addIntHeader(String arg0,
                         int arg1)

Specified by:

addIntHeader in interface HttpServletResponse

Overrides:

addIntHeader in class HttpServletResponseWrapper

See Also:

HttpServletResponse.addIntHeader(java.lang.String, int)

containsHeader

public boolean containsHeader(String arg0)

Specified by:

containsHeader in interface HttpServletResponse

Overrides:

containsHeader in class HttpServletResponseWrapper

See Also:

HttpServletResponse.containsHeader(java.lang.String)

encodeRedirectURL

public String encodeRedirectURL(String arg0)

Specified by:

encodeRedirectURL in interface HttpServletResponse

Overrides:

encodeRedirectURL in class HttpServletResponseWrapper

See Also:

HttpServletResponse.encodeRedirectURL(java.lang.String)

encodeURL

public String encodeURL(String arg0)

Specified by:

encodeURL in interface HttpServletResponse

Overrides:

encodeURL in class HttpServletResponseWrapper

See Also:

HttpServletResponse.encodeURL(java.lang.String)

getLocale

public Locale getLocale()

Specified by:

getLocale in interface ServletResponse

Overrides:

getLocale in class ServletResponseWrapper

See Also:

ServletResponse.getLocale()

sendError

public void sendError(int arg0,
                      String arg1)
               throws IOException

Specified by:

sendError in interface HttpServletResponse

Overrides:

sendError in class HttpServletResponseWrapper

Throws:

IOException

See Also:

HttpServletResponse.sendError(int, java.lang.String)

sendError

public void sendError(int arg0)
               throws IOException

Specified by:

sendError in interface HttpServletResponse

Overrides:

sendError in class HttpServletResponseWrapper

Throws:

IOException

See Also:

HttpServletResponse.sendError(int)

setDateHeader

public void setDateHeader(String arg0,
                          long arg1)

Specified by:

setDateHeader in interface HttpServletResponse

Overrides:

setDateHeader in class HttpServletResponseWrapper

See Also:

HttpServletResponse.setDateHeader(java.lang.String, long)

setIntHeader

public void setIntHeader(String arg0,
                         int arg1)

Specified by:

setIntHeader in interface HttpServletResponse

Overrides:

setIntHeader in class HttpServletResponseWrapper

See Also:

HttpServletResponse.setIntHeader(java.lang.String, int)

setLocale

public void setLocale(Locale arg0)

Specified by:

setLocale in interface ServletResponse

Overrides:

setLocale in class ServletResponseWrapper

See Also:

ServletResponse.setLocale(java.util.Locale)

getOutputStream

public ServletOutputStream getOutputStream()
                                    throws IOException

Return the OutputStream. This is a 'MyServletOutputStream'.

Specified by:

getOutputStream in interface ServletResponse

Overrides:

getOutputStream in class ServletResponseWrapper

Throws:

IOException

getWriter

public PrintWriter getWriter()
                      throws IOException

Return the PrintWriter

Specified by:

getWriter in interface ServletResponse

Overrides:

getWriter in class ServletResponseWrapper

Throws:

IOException

setContentType

public void setContentType(String ct)

Sets the content type of the response being sent to the client. The content type may include the type of character encoding used, for example, text/html; charset=ISO-8859-4. If obtaining a PrintWriter, this method should be called first.

Specified by:

setContentType in interface ServletResponse

Overrides:

setContentType in class ServletResponseWrapper

getCharacterEncoding

public String getCharacterEncoding()

Returns the name of the charset used for the MIME body sent in this response. If no charset has been assigned, it is implicitly set to ISO-8859-1 (Latin-1). See RFC 2047 for more information about character encoding and MIME. returns the encoding

Specified by:

getCharacterEncoding in interface ServletResponse

Overrides:

getCharacterEncoding in class ServletResponseWrapper

determinXMLEncoding

protected byte[] determinXMLEncoding()

toString

public String toString()

Return all data that has been written to the PrintWriter.

Overrides:

toString in class Object

getXMLEncoding

public static final String getXMLEncoding(String xmlString)

Takes a String, which is considered to be (the first) part of an XML, and returns the encoding (the specified one, or the XML default)

Returns:

The XML Encoding, or null if the String was not recognized as XML (no <?xml> header found)

Since:

MMBase-1.7.1

See Also:

getXMLEncoding(byte[])

getXMLEncoding

public static String getXMLEncoding(byte[] allBytes)

Takes a ByteArrayInputStream, which is considered to be (the first) part of an XML, and returns the encoding.

Returns:

The XML Encoding, or null if the String was not recognized as XML (not <?xml> header found)

Since:

MMBase-1.7.1

See Also:

getXMLEncoding(String)

getEncoding

public static String getEncoding(String contentType)

Takes the value of a Content-Type header, and tries to find the encoding from it.

Returns:

The found charset if found, otherwise 'null'

Since:

MMBase-1.7.1

getDefaultEncoding

public static String getDefaultEncoding(String contentType)

Supposes that no explicit charset is mentioned in a contentType, and returns a default. (UTF-8 or US-ASCII for XML types and ISO-8859-1 otherwise).

Returns:

A charset.

Since:

MMBase-1.7.1