javax.servlet.http
Interface HttpServletResponse

All Superinterfaces:

ServletResponse

All Known Subinterfaces:

CauchoResponse

All Known Implementing Classes:

AbstractCauchoResponse, CauchoResponseWrapper, CauchoResponseWrapper, DispatchResponse, HttpServletResponseImpl, HttpServletResponseWrapper, IncludeResponse, JspResponse, JspResponseWrapper, ProxyCacheResponse, ResponseAdapter, StubServletResponse, ToCharResponseAdapter

public interface HttpServletResponse
extends ServletResponse

HttpServletResponse extends ServletResponse allowing servlets to set the status and headers.

Useful Headers

Expires

Lets clients cache the page. Resin can use Expires to internally cache the page.

Field Summary

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

Method Summary

void	addCookie(Cookie cookie) Sends a new cookie to the client.
void	addDateHeader(java.lang.String name, long date) Adds a header by converting a date to a string.
void	addHeader(java.lang.String name, java.lang.String value) Adds a header.
void	addIntHeader(java.lang.String name, int value) Adds a header by converting an integer value to a string.
boolean	containsHeader(java.lang.String name) Returns true if the output headers include name
java.lang.String	encodeRedirectUrl(java.lang.String url) Deprecated.
java.lang.String	encodeRedirectURL(java.lang.String name) Encodes session information in a URL suitable for sendRedirect()
java.lang.String	encodeUrl(java.lang.String url) Deprecated.
java.lang.String	encodeURL(java.lang.String url) Encodes session information in a URL.
java.lang.String	getHeader(java.lang.String name) Retuns value of header with a given name
java.util.Collection<java.lang.String>	getHeaderNames() Returns an Iterable for header names set via setHeader(java.lang.String, java.lang.String), addHeader(java.lang.String, java.lang.String), setDateHeader(java.lang.String, long), addDateHeader(java.lang.String, long), setIntHeader(java.lang.String, int), or addIntHeader(java.lang.String, int), respectively.
java.util.Collection<java.lang.String>	getHeaders(java.lang.String name) Returns an Iterable for header values with a given name
int	getStatus() Returns the current status code of this response
void	sendError(int sc) Sends an HTTP error page based on the status code
void	sendError(int sc, java.lang.String msg) Sends an HTTP error page based on the status code
void	sendRedirect(java.lang.String location) Redirects the client to another page.
void	setDateHeader(java.lang.String name, long date) Sets a header by converting a date to a string.
void	setHeader(java.lang.String name, java.lang.String value) Sets a header.
void	setIntHeader(java.lang.String name, int value) Sets a header by converting an integer value to a string.
void	setStatus(int sc) Sets the HTTP status
void	setStatus(int sc, java.lang.String msg) Deprecated.

Methods inherited from interface javax.servlet.ServletResponse

flushBuffer, getBufferSize, getCharacterEncoding, getContentType, getLocale, getOutputStream, getWriter, isCommitted, reset, resetBuffer, setBufferSize, setCharacterEncoding, setContentLength, setContentType, setLocale

Field Detail

SC_ACCEPTED

static final int SC_ACCEPTED

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Constant Field Values

SC_BAD_GATEWAY

static final int SC_BAD_GATEWAY

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Constant Field Values

SC_BAD_REQUEST

static final int SC_BAD_REQUEST

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SC_CONFLICT

static final int SC_CONFLICT

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SC_CONTINUE

static final int SC_CONTINUE

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SC_CREATED

static final int SC_CREATED

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SC_EXPECTATION_FAILED

static final int SC_EXPECTATION_FAILED

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SC_FORBIDDEN

static final int SC_FORBIDDEN

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SC_GATEWAY_TIMEOUT

static final int SC_GATEWAY_TIMEOUT

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Constant Field Values

SC_GONE

static final int SC_GONE

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Constant Field Values

SC_HTTP_VERSION_NOT_SUPPORTED

static final int SC_HTTP_VERSION_NOT_SUPPORTED

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SC_INTERNAL_SERVER_ERROR

static final int SC_INTERNAL_SERVER_ERROR

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SC_LENGTH_REQUIRED

static final int SC_LENGTH_REQUIRED

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SC_METHOD_NOT_ALLOWED

static final int SC_METHOD_NOT_ALLOWED

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Constant Field Values

SC_MOVED_PERMANENTLY

static final int SC_MOVED_PERMANENTLY

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Constant Field Values

SC_MOVED_TEMPORARILY

static final int SC_MOVED_TEMPORARILY

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Constant Field Values

SC_FOUND

static final int SC_FOUND

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SC_MULTIPLE_CHOICES

static final int SC_MULTIPLE_CHOICES

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Constant Field Values

SC_NO_CONTENT

static final int SC_NO_CONTENT

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Constant Field Values

SC_NON_AUTHORITATIVE_INFORMATION

static final int SC_NON_AUTHORITATIVE_INFORMATION

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Constant Field Values

SC_NOT_ACCEPTABLE

static final int SC_NOT_ACCEPTABLE

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Constant Field Values

SC_NOT_FOUND

static final int SC_NOT_FOUND

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Constant Field Values

SC_NOT_IMPLEMENTED

static final int SC_NOT_IMPLEMENTED

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SC_NOT_MODIFIED

static final int SC_NOT_MODIFIED

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SC_OK

static final int SC_OK

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SC_PARTIAL_CONTENT

static final int SC_PARTIAL_CONTENT

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SC_PAYMENT_REQUIRED

static final int SC_PAYMENT_REQUIRED

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SC_PRECONDITION_FAILED

static final int SC_PRECONDITION_FAILED

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Constant Field Values

SC_PROXY_AUTHENTICATION_REQUIRED

static final int SC_PROXY_AUTHENTICATION_REQUIRED

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Constant Field Values

SC_REQUEST_ENTITY_TOO_LARGE

static final int SC_REQUEST_ENTITY_TOO_LARGE

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SC_REQUEST_TIMEOUT

static final int SC_REQUEST_TIMEOUT

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SC_REQUEST_URI_TOO_LONG

static final int SC_REQUEST_URI_TOO_LONG

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SC_REQUESTED_RANGE_NOT_SATISFIABLE

static final int SC_REQUESTED_RANGE_NOT_SATISFIABLE

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SC_RESET_CONTENT

static final int SC_RESET_CONTENT

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SC_SEE_OTHER

static final int SC_SEE_OTHER

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SC_SERVICE_UNAVAILABLE

static final int SC_SERVICE_UNAVAILABLE

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SC_SWITCHING_PROTOCOLS

static final int SC_SWITCHING_PROTOCOLS

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SC_UNAUTHORIZED

static final int SC_UNAUTHORIZED

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Constant Field Values

SC_UNSUPPORTED_MEDIA_TYPE

static final int SC_UNSUPPORTED_MEDIA_TYPE

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SC_USE_PROXY

static final int SC_USE_PROXY

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Constant Field Values

SC_TEMPORARY_REDIRECT

static final int SC_TEMPORARY_REDIRECT

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Constant Field Values

Method Detail

setStatus

void setStatus(int sc)

Sets the HTTP status

Parameters:

sc - the HTTP status code

sendError

void sendError(int sc,
               java.lang.String msg)
               throws java.io.IOException

Sends an HTTP error page based on the status code

Parameters:

sc - the HTTP status code

Throws:

java.io.IOException

sendError

void sendError(int sc)
               throws java.io.IOException

Sends an HTTP error page based on the status code

Parameters:

sc - the HTTP status code

Throws:

java.io.IOException

sendRedirect

void sendRedirect(java.lang.String location)
                  throws java.io.IOException

Redirects the client to another page.

Parameters:

location - the location to redirect to.

Throws:

java.io.IOException

setHeader

void setHeader(java.lang.String name,
               java.lang.String value)

Sets a header. This will override a previous header with the same name.

Parameters:

name - the header name

value - the header value

addHeader

void addHeader(java.lang.String name,
               java.lang.String value)

Adds a header. If another header with the same name exists, both will be sent to the client.

Parameters:

name - the header name

value - the header value

containsHeader

boolean containsHeader(java.lang.String name)

Returns true if the output headers include name

Parameters:

name - the header name to test

setDateHeader

void setDateHeader(java.lang.String name,
                   long date)

Sets a header by converting a date to a string.

To set the page to expire in 15 seconds use the following:

 long now = System.currentTime();
 response.setDateHeader("Expires", now + 15000);
 

Parameters:

name - name of the header

date - the date in milliseconds since the epoch.

addDateHeader

void addDateHeader(java.lang.String name,
                   long date)

Adds a header by converting a date to a string.

Parameters:

name - name of the header

date - the date in milliseconds since the epoch.

setIntHeader

void setIntHeader(java.lang.String name,
                  int value)

Sets a header by converting an integer value to a string.

Parameters:

name - name of the header

value - the value as an integer

addIntHeader

void addIntHeader(java.lang.String name,
                  int value)

Adds a header by converting an integer value to a string.

Parameters:

name - name of the header

value - the value as an integer

addCookie

void addCookie(Cookie cookie)

Sends a new cookie to the client.

encodeURL

java.lang.String encodeURL(java.lang.String url)

Encodes session information in a URL. Calling this will enable sessions for users who have disabled cookies.

Parameters:

url - the url to encode

Returns:

a url with session information encoded

encodeRedirectURL

java.lang.String encodeRedirectURL(java.lang.String name)

Encodes session information in a URL suitable for sendRedirect()

Parameters:

name - the url to encode

Returns:

a url with session information encoded

setStatus

void setStatus(int sc,
               java.lang.String msg)

Deprecated.

encodeUrl

java.lang.String encodeUrl(java.lang.String url)

Deprecated.

encodeRedirectUrl

java.lang.String encodeRedirectUrl(java.lang.String url)

Deprecated.

getStatus

int getStatus()

Returns the current status code of this response

Returns:

getHeader

java.lang.String getHeader(java.lang.String name)

Retuns value of header with a given name

Parameters:

name -

Returns:

getHeaders

java.util.Collection<java.lang.String> getHeaders(java.lang.String name)

Returns an Iterable for header values with a given name

Parameters:

name -

Returns:

getHeaderNames

java.util.Collection<java.lang.String> getHeaderNames()

Returns an Iterable for header names set via setHeader(java.lang.String, java.lang.String), addHeader(java.lang.String, java.lang.String), setDateHeader(java.lang.String, long), addDateHeader(java.lang.String, long), setIntHeader(java.lang.String, int), or addIntHeader(java.lang.String, int), respectively.

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