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package javax.servlet.http;

import java.io.IOException;
import java.util.Collection;
import java.util.Map;
import java.util.function.Supplier;
import javax.servlet.ServletResponseWrapper;

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.
Author:Various
See Also:
Since:Servlet 2.3
/** * * 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. * * @author Various * @since Servlet 2.3 * * @see javax.servlet.http.HttpServletResponse */
public class HttpServletResponseWrapper extends ServletResponseWrapper implements HttpServletResponse {
Constructs a response adaptor wrapping the given response.
Params:
Throws:
  • IllegalArgumentException – if the response is null
/** * Constructs a response adaptor wrapping the given response. * @throws java.lang.IllegalArgumentException if the response is null * * @param response the {@link HttpServletResponse} to be wrapped. */
public HttpServletResponseWrapper(HttpServletResponse response) { super(response); } private HttpServletResponse _getHttpServletResponse() { return (HttpServletResponse) super.getResponse(); }
The default behavior of this method is to call addCookie(Cookie cookie) on the wrapped response object.
/** * The default behavior of this method is to call addCookie(Cookie cookie) * on the wrapped response object. */
@Override public void addCookie(Cookie cookie) { this._getHttpServletResponse().addCookie(cookie); }
The default behavior of this method is to call containsHeader(String name) on the wrapped response object.
/** * The default behavior of this method is to call containsHeader(String name) * on the wrapped response object. */
@Override public boolean containsHeader(String name) { return this._getHttpServletResponse().containsHeader(name); }
The default behavior of this method is to call encodeURL(String url) on the wrapped response object.
/** * The default behavior of this method is to call encodeURL(String url) * on the wrapped response object. */
@Override public String encodeURL(String url) { return this._getHttpServletResponse().encodeURL(url); }
The default behavior of this method is to return encodeRedirectURL(String url) on the wrapped response object.
/** * The default behavior of this method is to return encodeRedirectURL(String url) * on the wrapped response object. */
@Override public String encodeRedirectURL(String url) { return this._getHttpServletResponse().encodeRedirectURL(url); }
The default behavior of this method is to call encodeUrl(String url) on the wrapped response object.
Deprecated:As of version 2.1, use encodeURL(String url) instead
/** * The default behavior of this method is to call encodeUrl(String url) * on the wrapped response object. * * @deprecated As of version 2.1, use {@link #encodeURL(String url)} * instead */
@Deprecated @Override public String encodeUrl(String url) { return this._getHttpServletResponse().encodeUrl(url); }
The default behavior of this method is to return encodeRedirectUrl(String url) on the wrapped response object.
Deprecated:As of version 2.1, use encodeRedirectURL(String url) instead
/** * The default behavior of this method is to return * encodeRedirectUrl(String url) on the wrapped response object. * * @deprecated As of version 2.1, use * {@link #encodeRedirectURL(String url)} instead */
@Deprecated @Override public String encodeRedirectUrl(String url) { return this._getHttpServletResponse().encodeRedirectUrl(url); }
The default behavior of this method is to call sendError(int sc, String msg) on the wrapped response object.
/** * The default behavior of this method is to call sendError(int sc, String msg) * on the wrapped response object. */
@Override public void sendError(int sc, String msg) throws IOException { this._getHttpServletResponse().sendError(sc, msg); }
The default behavior of this method is to call sendError(int sc) on the wrapped response object.
/** * The default behavior of this method is to call sendError(int sc) * on the wrapped response object. */
@Override public void sendError(int sc) throws IOException { this._getHttpServletResponse().sendError(sc); }
The default behavior of this method is to return sendRedirect(String location) on the wrapped response object.
/** * The default behavior of this method is to return sendRedirect(String location) * on the wrapped response object. */
@Override public void sendRedirect(String location) throws IOException { this._getHttpServletResponse().sendRedirect(location); }
The default behavior of this method is to call setDateHeader(String name, long date) on the wrapped response object.
/** * The default behavior of this method is to call setDateHeader(String name, long date) * on the wrapped response object. */
@Override public void setDateHeader(String name, long date) { this._getHttpServletResponse().setDateHeader(name, date); }
The default behavior of this method is to call addDateHeader(String name, long date) on the wrapped response object.
/** * The default behavior of this method is to call addDateHeader(String name, long date) * on the wrapped response object. */
@Override public void addDateHeader(String name, long date) { this._getHttpServletResponse().addDateHeader(name, date); }
The default behavior of this method is to return setHeader(String name, String value) on the wrapped response object.
/** * The default behavior of this method is to return setHeader(String name, String value) * on the wrapped response object. */
@Override public void setHeader(String name, String value) { this._getHttpServletResponse().setHeader(name, value); }
The default behavior of this method is to return addHeader(String name, String value) on the wrapped response object.
/** * The default behavior of this method is to return addHeader(String name, String value) * on the wrapped response object. */
@Override public void addHeader(String name, String value) { this._getHttpServletResponse().addHeader(name, value); }
The default behavior of this method is to call setIntHeader(String name, int value) on the wrapped response object.
/** * The default behavior of this method is to call setIntHeader(String name, int value) * on the wrapped response object. */
@Override public void setIntHeader(String name, int value) { this._getHttpServletResponse().setIntHeader(name, value); }
The default behavior of this method is to call addIntHeader(String name, int value) on the wrapped response object.
/** * The default behavior of this method is to call addIntHeader(String name, int value) * on the wrapped response object. */
@Override public void addIntHeader(String name, int value) { this._getHttpServletResponse().addIntHeader(name, value); }
The default behavior of this method is to call setStatus(int sc) on the wrapped response object.
/** * The default behavior of this method is to call setStatus(int sc) * on the wrapped response object. */
@Override public void setStatus(int sc) { this._getHttpServletResponse().setStatus(sc); }
The default behavior of this method is to call setStatus(int sc, String sm) on the wrapped response object.
Deprecated:As of version 2.1, due to ambiguous meaning of the message parameter. To set a status code use setStatus(int), to send an error with a description use sendError(int, String)
/** * The default behavior of this method is to call * setStatus(int sc, String sm) on the wrapped response object. * * @deprecated As of version 2.1, due to ambiguous meaning of the * message parameter. To set a status code * use {@link #setStatus(int)}, to send an error with a description * use {@link #sendError(int, String)} */
@Deprecated @Override public void setStatus(int sc, String sm) { this._getHttpServletResponse().setStatus(sc, sm); }
The default behaviour of this method is to call HttpServletResponse.getStatus on the wrapped response object.
Returns:the current status code of the wrapped response
/** * The default behaviour of this method is to call * {@link HttpServletResponse#getStatus} on the wrapped response * object. * * @return the current status code of the wrapped response */
@Override public int getStatus() { return _getHttpServletResponse().getStatus(); }
The default behaviour of this method is to call HttpServletResponse.getHeader on the wrapped response object.
Params:
  • name – the name of the response header whose value to return
Returns:the value of the response header with the given name, or null if no header with the given name has been set on the wrapped response
Since:Servlet 3.0
/** * The default behaviour of this method is to call * {@link HttpServletResponse#getHeader} on the wrapped response * object. * * @param name the name of the response header whose value to return * * @return the value of the response header with the given name, * or <tt>null</tt> if no header with the given name has been set * on the wrapped response * * @since Servlet 3.0 */
@Override public String getHeader(String name) { return _getHttpServletResponse().getHeader(name); }
The default behaviour of this method is to call HttpServletResponse.getHeaders on the wrapped response object.

Any changes to the returned Collection must not affect this HttpServletResponseWrapper.

Params:
  • name – the name of the response header whose values to return
Returns:a (possibly empty) Collection of the values of the response header with the given name
Since:Servlet 3.0
/** * The default behaviour of this method is to call * {@link HttpServletResponse#getHeaders} on the wrapped response * object. * * <p>Any changes to the returned <code>Collection</code> must not * affect this <code>HttpServletResponseWrapper</code>. * * @param name the name of the response header whose values to return * * @return a (possibly empty) <code>Collection</code> of the values * of the response header with the given name * * @since Servlet 3.0 */
@Override public Collection<String> getHeaders(String name) { return _getHttpServletResponse().getHeaders(name); }
The default behaviour of this method is to call HttpServletResponse.getHeaderNames on the wrapped response object.

Any changes to the returned Collection must not affect this HttpServletResponseWrapper.

Returns:a (possibly empty) Collection of the names of the response headers
Since:Servlet 3.0
/** * The default behaviour of this method is to call * {@link HttpServletResponse#getHeaderNames} on the wrapped response * object. * * <p>Any changes to the returned <code>Collection</code> must not * affect this <code>HttpServletResponseWrapper</code>. * * @return a (possibly empty) <code>Collection</code> of the names * of the response headers * * @since Servlet 3.0 */
@Override public Collection<String> getHeaderNames() { return _getHttpServletResponse().getHeaderNames(); }
The default behaviour of this method is to call HttpServletResponse.setTrailerFields on the wrapped response object.
Params:
  • supplier – of trailer headers
Since:Servlet 4.0
/** * The default behaviour of this method is to call * {@link HttpServletResponse#setTrailerFields} on the wrapped response * object. * * @param supplier of trailer headers * * @since Servlet 4.0 */
@Override public void setTrailerFields(Supplier<Map<String, String>> supplier) { _getHttpServletResponse().setTrailerFields(supplier); }
The default behaviour of this method is to call HttpServletResponse.getTrailerFields on the wrapped response object.
Returns:supplier of trailer headers
Since:Servlet 4.0
/** * The default behaviour of this method is to call * {@link HttpServletResponse#getTrailerFields} on the wrapped response * object. * * @return supplier of trailer headers * * @since Servlet 4.0 */
@Override public Supplier<Map<String, String>> getTrailerFields() { return _getHttpServletResponse().getTrailerFields(); } }