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javax.servlet.http
Class HttpServletResponseWrapper

java.lang.Object
 extended by javax.servlet.ServletResponseWrapper
 extended by javax.servlet.http.HttpServletResponseWrapper

All Implemented Interfaces:

HttpServletResponse, ServletResponse

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public class HttpServletResponseWrapper
extends ServletResponseWrapper
implements HttpServletResponse

Provides a convenient implementation of the HttpServletResponse interface that can be subclassed by developers wishing to adapt the response from a Servlet. This class implements the Wrapper or Decorator pattern. Methods default to calling through to the wrapped response object.

Since:

v 2.3

Author:

Various

See Also:

HttpServletResponse

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Field Summary

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
HttpServletResponseWrapper(HttpServletResponse response) Constructs a response adaptor wrapping the given response.

Method Summary
void	addCookie(Cookie cookie) The default behavior of this method is to call addCookie(Cookie cookie) on the wrapped response object.
void	addDateHeader(String name, long date) The default behavior of this method is to call addDateHeader(String name, long date) on the wrapped response object.
void	addHeader(String name, String value) The default behavior of this method is to return addHeader(String name, String value) on the wrapped response object.
void	addIntHeader(String name, int value) The default behavior of this method is to call addIntHeader(String name, int value) on the wrapped response object.
boolean	containsHeader(String name) The default behavior of this method is to call containsHeader(String name) on the wrapped response object.
String	encodeRedirectUrl(String url) The default behavior of this method is to return encodeRedirectUrl(String url) on the wrapped response object.
String	encodeRedirectURL(String url) The default behavior of this method is to return encodeRedirectURL(String url) on the wrapped response object.
String	encodeUrl(String url) The default behavior of this method is to call encodeUrl(String url) on the wrapped response object.
String	encodeURL(String url) The default behavior of this method is to call encodeURL(String url) on the wrapped response object.
void	sendError(int sc) The default behavior of this method is to call sendError(int sc) on the wrapped response object.
void	sendError(int sc, String msg) The default behavior of this method is to call sendError(int sc, String msg) on the wrapped response object.
void	sendRedirect(String location) The default behavior of this method is to return sendRedirect(String location) on the wrapped response object.
void	setDateHeader(String name, long date) The default behavior of this method is to call setDateHeader(String name, long date) on the wrapped response object.
void	setHeader(String name, String value) The default behavior of this method is to return setHeader(String name, String value) on the wrapped response object.
void	setIntHeader(String name, int value) The default behavior of this method is to call setIntHeader(String name, int value) on the wrapped response object.
void	setStatus(int sc) The default behavior of this method is to call setStatus(int sc) on the wrapped response object.
void	setStatus(int sc, String sm) The default behavior of this method is to call setStatus(int sc, String sm) on the wrapped response object.

Methods inherited from class javax.servlet.ServletResponseWrapper
flushBuffer, getBufferSize, getCharacterEncoding, getContentType, getLocale, getOutputStream, getResponse, getWriter, isCommitted, reset, resetBuffer, setBufferSize, setCharacterEncoding, setContentLength, setContentType, setLocale, setResponse

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface javax.servlet.ServletResponse
flushBuffer, getBufferSize, getCharacterEncoding, getContentType, getLocale, getOutputStream, getWriter, isCommitted, reset, resetBuffer, setBufferSize, setCharacterEncoding, setContentLength, setContentType, setLocale

Constructor Detail

HttpServletResponseWrapper

public HttpServletResponseWrapper(HttpServletResponse response)

Constructs a response adaptor wrapping the given response.

Throws:

IllegalArgumentException - if the response is null

Method Detail

addCookie

public void addCookie(Cookie cookie)

The default behavior of this method is to call addCookie(Cookie cookie) on the wrapped response object.

Specified by:

addCookie in interface HttpServletResponse

Parameters:

cookie - the Cookie to return to the client

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containsHeader

public boolean containsHeader(String name)

The default behavior of this method is to call containsHeader(String name) on the wrapped response object.

Specified by:

containsHeader in interface HttpServletResponse

Parameters:

name - the header name

Returns:

true if the named response header has already been set; false otherwise

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encodeURL

public String encodeURL(String url)

The default behavior of this method is to call encodeURL(String url) on the wrapped response object.

Specified by:

encodeURL in interface HttpServletResponse

Parameters:

url - the url to be encoded.

Returns:

the encoded URL if encoding is needed; the unchanged URL otherwise.

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encodeRedirectURL

public String encodeRedirectURL(String url)

The default behavior of this method is to return encodeRedirectURL(String url) on the wrapped response object.

Specified by:

encodeRedirectURL in interface HttpServletResponse

Parameters:

url - the url to be encoded.

Returns:

the encoded URL if encoding is needed; the unchanged URL otherwise.

See Also:

HttpServletResponse.sendRedirect(java.lang.String), HttpServletResponse.encodeUrl(java.lang.String)

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encodeUrl

public String encodeUrl(String url)

The default behavior of this method is to call encodeUrl(String url) on the wrapped response object.

Specified by:

encodeUrl in interface HttpServletResponse

Parameters:

url - the url to be encoded.

Returns:

the encoded URL if encoding is needed; the unchanged URL otherwise.

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encodeRedirectUrl

public String encodeRedirectUrl(String url)

The default behavior of this method is to return encodeRedirectUrl(String url) on the wrapped response object.

Specified by:

encodeRedirectUrl in interface HttpServletResponse

Parameters:

url - the url to be encoded.

Returns:

the encoded URL if encoding is needed; the unchanged URL otherwise.

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sendError

public void sendError(int sc,
 String msg)
 throws IOException

The default behavior of this method is to call sendError(int sc, String msg) on the wrapped response object.

Specified by:

sendError in interface HttpServletResponse

Parameters:

sc - the error status code

msg - the descriptive message

Throws:

IOException - If an input or output exception occurs

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sendError

public void sendError(int sc)
 throws IOException

The default behavior of this method is to call sendError(int sc) on the wrapped response object.

Specified by:

sendError in interface HttpServletResponse

Parameters:

sc - the error status code

Throws:

IOException - If an input or output exception occurs

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sendRedirect

public void sendRedirect(String location)
 throws IOException

The default behavior of this method is to return sendRedirect(String location) on the wrapped response object.

Specified by:

sendRedirect in interface HttpServletResponse

Parameters:

location - the redirect location URL

Throws:

IOException - If an input or output exception occurs

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setDateHeader

public void setDateHeader(String name,
 long date)

The default behavior of this method is to call setDateHeader(String name, long date) on the wrapped response object.

Specified by:

setDateHeader in interface HttpServletResponse

Parameters:

name - the name of the header to set

date - the assigned date value

See Also:

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

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addDateHeader

public void addDateHeader(String name,
 long date)

The default behavior of this method is to call addDateHeader(String name, long date) on the wrapped response object.

Specified by:

addDateHeader in interface HttpServletResponse

Parameters:

name - the name of the header to set

date - the additional date value

See Also:

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

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setHeader

public void setHeader(String name,
 String value)

The default behavior of this method is to return setHeader(String name, String value) on the wrapped response object.

Specified by:

setHeader in interface HttpServletResponse

Parameters:

name - the name of the header

value - the header value If it contains octet string, it should be encoded according to RFC 2047 (http://www.ietf.org/rfc/rfc2047.txt)

See Also:

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

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addHeader

public void addHeader(String name,
 String value)

The default behavior of this method is to return addHeader(String name, String value) on the wrapped response object.

Specified by:

addHeader in interface HttpServletResponse

Parameters:

name - the name of the header

value - the additional header value If it contains octet string, it should be encoded according to RFC 2047 (http://www.ietf.org/rfc/rfc2047.txt)

See Also:

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

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setIntHeader

public void setIntHeader(String name,
 int value)

The default behavior of this method is to call setIntHeader(String name, int value) on the wrapped response object.

Specified by:

setIntHeader in interface HttpServletResponse

Parameters:

name - the name of the header

value - the assigned integer value

See Also:

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

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addIntHeader

public void addIntHeader(String name,
 int value)

The default behavior of this method is to call addIntHeader(String name, int value) on the wrapped response object.

Specified by:

addIntHeader in interface HttpServletResponse

Parameters:

name - the name of the header

value - the assigned integer value

See Also:

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

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setStatus

public void setStatus(int sc)

The default behavior of this method is to call setStatus(int sc) on the wrapped response object.

Specified by:

setStatus in interface HttpServletResponse

Parameters:

sc - the status code

See Also:

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

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setStatus

public void setStatus(int sc,
 String sm)

The default behavior of this method is to call setStatus(int sc, String sm) on the wrapped response object.

Specified by:

setStatus in interface HttpServletResponse

Parameters:

sc - the status code

sm - the status message

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