public interface ExtensionPointHttpServletResponse

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`SC_ACCEPTED`	Status code (202) indicating that a request was accepted for processing, but was not completed.
`static int`	`SC_BAD_GATEWAY`	Status code (502) indicating that the HTTP server received an invalid response from a server it consulted when acting as a proxy or gateway.
`static int`	`SC_BAD_REQUEST`	Status code (400) indicating the request sent by the client was syntactically incorrect.
`static int`	`SC_CONFLICT`	Status code (409) indicating that the request could not be completed due to a conflict with the current state of the resource.
`static int`	`SC_CONTINUE`	Status code (100) indicating the client can continue.
`static int`	`SC_CREATED`	Status code (201) indicating the request succeeded and created a new resource on the server.
`static int`	`SC_EXPECTATION_FAILED`	Status code (417) indicating that the server could not meet the expectation given in the Expect request header.
`static int`	`SC_FORBIDDEN`	Status code (403) indicating the server understood the request but refused to fulfill it.
`static int`	`SC_FOUND`	Status code (302) indicating that the resource reside temporarily under a different URI.
`static int`	`SC_GATEWAY_TIMEOUT`	Status code (504) indicating that the server did not receive a timely response from the upstream server while acting as a gateway or proxy.
`static int`	`SC_GONE`	Status code (410) indicating that the resource is no longer available at the server and no forwarding address is known.
`static int`	`SC_HTTP_VERSION_NOT_SUPPORTED`	Status code (505) indicating that the server does not support or refuses to support the HTTP protocol version that was used in the request message.
`static int`	`SC_INTERNAL_SERVER_ERROR`	Status code (500) indicating an error inside the HTTP server which prevented it from fulfilling the request.
`static int`	`SC_LENGTH_REQUIRED`	Status code (411) indicating that the request cannot be handled without a defined `Content-Length`.
`static int`	`SC_METHOD_NOT_ALLOWED`	Status code (405) indicating that the method specified in the `Request-Line` is not allowed for the resource identified by the `Request-URI`.
`static int`	`SC_MOVED_PERMANENTLY`	Status code (301) indicating that the resource has permanently moved to a new location, and that future references should use a new URI with their requests.
`static int`	`SC_MOVED_TEMPORARILY`	Status code (302) indicating that the resource has temporarily moved to another location, but that future references should still use the original URI to access the resource.
`static int`	`SC_MULTIPLE_CHOICES`	Status code (300) indicating that the requested resource corresponds to any one of a set of representations, each with its own specific location.
`static int`	`SC_NO_CONTENT`	Status code (204) indicating that the request succeeded but that there was no new information to return.
`static int`	`SC_NON_AUTHORITATIVE_INFORMATION`	Status code (203) indicating that the meta information presented by the client did not originate from the server.
`static int`	`SC_NOT_ACCEPTABLE`	Status code (406) indicating that the resource identified by the request is only capable of generating response entities which have content characteristics not acceptable according to the accept headers sent in the request.
`static int`	`SC_NOT_FOUND`	Status code (404) indicating that the requested resource is not available.
`static int`	`SC_NOT_IMPLEMENTED`	Status code (501) indicating the HTTP server does not support the functionality needed to fulfill the request.
`static int`	`SC_NOT_MODIFIED`	Status code (304) indicating that a conditional GET operation found that the resource was available and not modified.
`static int`	`SC_OK`	Status code (200) indicating the request succeeded normally.
`static int`	`SC_PARTIAL_CONTENT`	Status code (206) indicating that the server has fulfilled the partial GET request for the resource.
`static int`	`SC_PAYMENT_REQUIRED`	Status code (402) reserved for future use.
`static int`	`SC_PRECONDITION_FAILED`	Status code (412) indicating that the precondition given in one or more of the request-header fields evaluated to false when it was tested on the server.
`static int`	`SC_PROXY_AUTHENTICATION_REQUIRED`	Status code (407) indicating that the client MUST first authenticate itself with the proxy.
`static int`	`SC_REQUEST_ENTITY_TOO_LARGE`	Status code (413) indicating that the server is refusing to process the request because the request entity is larger than the server is willing or able to process.
`static int`	`SC_REQUEST_TIMEOUT`	Status code (408) indicating that the client did not produce a request within the time that the server was prepared to wait.
`static int`	`SC_REQUEST_URI_TOO_LONG`	Status code (414) indicating that the server is refusing to service the request because the `Request-URI` is longer than the server is willing to interpret.
`static int`	`SC_REQUESTED_RANGE_NOT_SATISFIABLE`	Status code (416) indicating that the server cannot serve the requested byte range.
`static int`	`SC_RESET_CONTENT`	Status code (205) indicating that the agent SHOULD reset the document view which caused the request to be sent.
`static int`	`SC_SEE_OTHER`	Status code (303) indicating that the response to the request can be found under a different URI.
`static int`	`SC_SERVICE_UNAVAILABLE`	Status code (503) indicating that the HTTP server is temporarily overloaded, and unable to handle the request.
`static int`	`SC_SWITCHING_PROTOCOLS`	Status code (101) indicating the server is switching protocols according to Upgrade header.
`static int`	`SC_TEMPORARY_REDIRECT`	Status code (307) indicating that the requested resource resides temporarily under a different URI.
`static int`	`SC_UNAUTHORIZED`	Status code (401) indicating that the request requires HTTP authentication.
`static int`	`SC_UNSUPPORTED_MEDIA_TYPE`	Status code (415) indicating that the server is refusing to service the request because the entity of the request is in a format not supported by the requested resource for the requested method.
`static int`	`SC_USE_PROXY`	Status code (305) indicating that the requested resource MUST be accessed through the proxy given by the `Location` field.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`addDateHeader(String name, long date)`	Adds a response header with the given name and date-value.
`void`	`addHeader(String name, String value)`	Adds a response header with the given name and value.
`void`	`addIntHeader(String name, int value)`	Adds a response header with the given name and integer value.
`boolean`	`containsHeader(String name)`	Returns a boolean indicating whether the named response header has already been set.
`void`	`flushBuffer()`	Forces any content in the buffer to be written to the client.
`int`	`getBufferSize()`	Returns the actual buffer size used for the response.
`String`	`getCharacterEncoding()`	Returns the name of the character encoding (MIME charset) used for the body sent in this response.
`String`	`getContentType()`	Returns the content type used for the MIME body sent in this response.
`Locale`	`getLocale()`	Returns the locale specified for this response using the `setLocale(java.util.Locale)` method.
`OutputStream`	`getOutputStream()`	Returns a `OutputStream` suitable for writing binary data in the response.
`PrintWriter`	`getWriter()`	Returns a `PrintWriter` object that can send character text to the client.
`boolean`	`isCommitted()`	Returns a boolean indicating if the response has been committed.
`void`	`reset()`	Clears any data that exists in the buffer as well as the status code and headers.
`void`	`resetBuffer()`	Clears the content of the underlying buffer in the response without clearing headers or status code.
`void`	`sendError(int sc)`	Sends an error response to the client using the specified status code and clears the buffer.
`void`	`sendError(int sc, String msg)`	Sends an error response to the client using the specified status code and clears the output buffer.
`void`	`sendRedirect(String location)`	Sends a temporary redirect response to the client using the specified redirect location URL.
`void`	`setBufferSize(int size)`	Sets the preferred buffer size for the body of the response.
`void`	`setContentLength(int len)`	Sets the length of the content body in the response In HTTP servlets, this method sets the HTTP Content-Length header.
`void`	`setContentType(String type)`	Sets the content type of the response being sent to the client, if the response has not been committed yet.
`void`	`setDateHeader(String name, long date)`	Sets a response header with the given name and date-value.
`void`	`setHeader(String name, String value)`	Sets a response header with the given name and value.
`void`	`setIntHeader(String name, int value)`	Sets a response header with the given name and integer value.
`void`	`setLocale(Locale loc)`	Sets the locale of the response, if the response has not been committed yet.
`void`	`setStatus(int sc)`	Sets the status code for this response.

- Field Detail
  - SC_CONTINUE
```
static final int SC_CONTINUE
```
    Status code (100) indicating the client can continue.
    
    See Also:
    
    Constant Field Values
  - SC_SWITCHING_PROTOCOLS
```
static final int SC_SWITCHING_PROTOCOLS
```
    Status code (101) indicating the server is switching protocols according to Upgrade header.
    
    See Also:
    
    Constant Field Values
  - SC_OK
```
static final int SC_OK
```
    Status code (200) indicating the request succeeded normally.
    
    See Also:
    
    Constant Field Values
  - SC_CREATED
```
static final int SC_CREATED
```
    Status code (201) indicating the request succeeded and created a new resource on the server.
    
    See Also:
    
    Constant Field Values
  - SC_ACCEPTED
```
static final int SC_ACCEPTED
```
    Status code (202) indicating that a request was accepted for processing, but was not completed.
    
    See Also:
    
    Constant Field Values
  - SC_NON_AUTHORITATIVE_INFORMATION
```
static final int SC_NON_AUTHORITATIVE_INFORMATION
```
    Status code (203) indicating that the meta information presented by the client did not originate from the server.
    
    See Also:
    
    Constant Field Values
  - SC_NO_CONTENT
```
static final int SC_NO_CONTENT
```
    Status code (204) indicating that the request succeeded but that there was no new information to return.
    
    See Also:
    
    Constant Field Values
  - SC_RESET_CONTENT
```
static final int SC_RESET_CONTENT
```
    Status code (205) indicating that the agent SHOULD reset the document view which caused the request to be sent.
    
    See Also:
    
    Constant Field Values
  - SC_PARTIAL_CONTENT
```
static final int SC_PARTIAL_CONTENT
```
    Status code (206) indicating that the server has fulfilled the partial GET request for the resource.
    
    See Also:
    
    Constant Field Values
  - SC_MULTIPLE_CHOICES
```
static final int SC_MULTIPLE_CHOICES
```
    Status code (300) indicating that the requested resource corresponds to any one of a set of representations, each with its own specific location.
    
    See Also:
    
    Constant Field Values
  - SC_MOVED_PERMANENTLY
```
static final int SC_MOVED_PERMANENTLY
```
    Status code (301) indicating that the resource has permanently moved to a new location, and that future references should use a new URI with their requests.
    
    See Also:
    
    Constant Field Values
  - SC_MOVED_TEMPORARILY
```
static final int SC_MOVED_TEMPORARILY
```
    Status code (302) indicating that the resource has temporarily moved to another location, but that future references should still use the original URI to access the resource. This definition is being retained for backwards compatibility. SC_FOUND is now the preferred definition.
    
    See Also:
    
    Constant Field Values
  - SC_FOUND
```
static final int SC_FOUND
```
    Status code (302) indicating that the resource reside temporarily under a different URI. Since the redirection might be altered on occasion, the client should continue to use the Request-URI for future requests.(HTTP/1.1) To represent the status code (302), it is recommended to use this variable.
    
    See Also:
    
    Constant Field Values
  - SC_SEE_OTHER
```
static final int SC_SEE_OTHER
```
    Status code (303) indicating that the response to the request can be found under a different URI.
    
    See Also:
    
    Constant Field Values
  - SC_NOT_MODIFIED
```
static final int SC_NOT_MODIFIED
```
    Status code (304) indicating that a conditional GET operation found that the resource was available and not modified.
    
    See Also:
    
    Constant Field Values
  - SC_USE_PROXY
```
static final int SC_USE_PROXY
```
    Status code (305) indicating that the requested resource MUST be accessed through the proxy given by the Location field.
    
    See Also:
    
    Constant Field Values
  - SC_TEMPORARY_REDIRECT
```
static final int SC_TEMPORARY_REDIRECT
```
    Status code (307) indicating that the requested resource resides temporarily under a different URI. The temporary URI SHOULD be given by the Location field in the response.
    
    See Also:
    
    Constant Field Values
  - SC_BAD_REQUEST
```
static final int SC_BAD_REQUEST
```
    Status code (400) indicating the request sent by the client was syntactically incorrect.
    
    See Also:
    
    Constant Field Values
  - SC_UNAUTHORIZED
```
static final int SC_UNAUTHORIZED
```
    Status code (401) indicating that the request requires HTTP authentication.
    
    See Also:
    
    Constant Field Values
  - SC_PAYMENT_REQUIRED
```
static final int SC_PAYMENT_REQUIRED
```
    Status code (402) reserved for future use.
    
    See Also:
    
    Constant Field Values
  - SC_FORBIDDEN
```
static final int SC_FORBIDDEN
```
    Status code (403) indicating the server understood the request but refused to fulfill it.
    
    See Also:
    
    Constant Field Values
  - SC_NOT_FOUND
```
static final int SC_NOT_FOUND
```
    Status code (404) indicating that the requested resource is not available.
    
    See Also:
    
    Constant Field Values
  - SC_METHOD_NOT_ALLOWED
```
static final int SC_METHOD_NOT_ALLOWED
```
    Status code (405) indicating that the method specified in the Request-Line is not allowed for the resource identified by the Request-URI.
    
    See Also:
    
    Constant Field Values
  - SC_NOT_ACCEPTABLE
```
static final int SC_NOT_ACCEPTABLE
```
    Status code (406) indicating that the resource identified by the request is only capable of generating response entities which have content characteristics not acceptable according to the accept headers sent in the request.
    
    See Also:
    
    Constant Field Values
  - SC_PROXY_AUTHENTICATION_REQUIRED
```
static final int SC_PROXY_AUTHENTICATION_REQUIRED
```
    Status code (407) indicating that the client MUST first authenticate itself with the proxy.
    
    See Also:
    
    Constant Field Values
  - SC_REQUEST_TIMEOUT
```
static final int SC_REQUEST_TIMEOUT
```
    Status code (408) indicating that the client did not produce a request within the time that the server was prepared to wait.
    
    See Also:
    
    Constant Field Values
  - SC_CONFLICT
```
static final int SC_CONFLICT
```
    Status code (409) indicating that the request could not be completed due to a conflict with the current state of the resource.
    
    See Also:
    
    Constant Field Values
  - SC_GONE
```
static final int SC_GONE
```
    Status code (410) indicating that the resource is no longer available at the server and no forwarding address is known. This condition SHOULD be considered permanent.
    
    See Also:
    
    Constant Field Values
  - SC_LENGTH_REQUIRED
```
static final int SC_LENGTH_REQUIRED
```
    Status code (411) indicating that the request cannot be handled without a defined Content-Length.
    
    See Also:
    
    Constant Field Values
  - SC_PRECONDITION_FAILED
```
static final int SC_PRECONDITION_FAILED
```
    Status code (412) indicating that the precondition given in one or more of the request-header fields evaluated to false when it was tested on the server.
    
    See Also:
    
    Constant Field Values
  - SC_REQUEST_ENTITY_TOO_LARGE
```
static final int SC_REQUEST_ENTITY_TOO_LARGE
```
    Status code (413) indicating that the server is refusing to process the request because the request entity is larger than the server is willing or able to process.
    
    See Also:
    
    Constant Field Values
  - SC_REQUEST_URI_TOO_LONG
```
static final int SC_REQUEST_URI_TOO_LONG
```
    Status code (414) indicating that the server is refusing to service the request because the Request-URI is longer than the server is willing to interpret.
    
    See Also:
    
    Constant Field Values
  - SC_UNSUPPORTED_MEDIA_TYPE
```
static final int SC_UNSUPPORTED_MEDIA_TYPE
```
    Status code (415) indicating that the server is refusing to service the request because the entity of the request is in a format not supported by the requested resource for the requested method.
    
    See Also:
    
    Constant Field Values
  - SC_REQUESTED_RANGE_NOT_SATISFIABLE
```
static final int SC_REQUESTED_RANGE_NOT_SATISFIABLE
```
    Status code (416) indicating that the server cannot serve the requested byte range.
    
    See Also:
    
    Constant Field Values
  - SC_EXPECTATION_FAILED
```
static final int SC_EXPECTATION_FAILED
```
    Status code (417) indicating that the server could not meet the expectation given in the Expect request header.
    
    See Also:
    
    Constant Field Values
  - SC_INTERNAL_SERVER_ERROR
```
static final int SC_INTERNAL_SERVER_ERROR
```
    Status code (500) indicating an error inside the HTTP server which prevented it from fulfilling the request.
    
    See Also:
    
    Constant Field Values
  - SC_NOT_IMPLEMENTED
```
static final int SC_NOT_IMPLEMENTED
```
    Status code (501) indicating the HTTP server does not support the functionality needed to fulfill the request.
    
    See Also:
    
    Constant Field Values
  - SC_BAD_GATEWAY
```
static final int SC_BAD_GATEWAY
```
    Status code (502) indicating that the HTTP server received an invalid response from a server it consulted when acting as a proxy or gateway.
    
    See Also:
    
    Constant Field Values
  - SC_SERVICE_UNAVAILABLE
```
static final int SC_SERVICE_UNAVAILABLE
```
    Status code (503) indicating that the HTTP server is temporarily overloaded, and unable to handle the request.
    
    See Also:
    
    Constant Field Values
  - SC_GATEWAY_TIMEOUT
```
static final int SC_GATEWAY_TIMEOUT
```
    Status code (504) indicating that the server did not receive a timely response from the upstream server while acting as a gateway or proxy.
    
    See Also:
    
    Constant Field Values
  - SC_HTTP_VERSION_NOT_SUPPORTED
```
static final int SC_HTTP_VERSION_NOT_SUPPORTED
```
    Status code (505) indicating that the server does not support or refuses to support the HTTP protocol version that was used in the request message.
    
    See Also:
    
    Constant Field Values
- Method Detail
  - containsHeader
```
boolean containsHeader(String name)
```
    Returns a boolean indicating whether the named response header has already been set.
    
    Parameters:
    
    name - the header name
    
    Returns:
    
    true if the named response header has already been set; false otherwise
  - sendError
```
void sendError(int sc,
               String msg)
        throws IOException
```
    Sends an error response to the client using the specified status code and clears the output buffer. The server defaults to creating the response to look like an HTML-formatted server error page containing the specified message, setting the content type to "text/html", leaving cookies and other headers unmodified. If an error-page declaration has been made for the web application corresponding to the status code passed in, it will be served back in preference to the suggested msg parameter.
    If the response has already been committed, this method throws an IllegalStateException. After using this method, the response should be considered to be committed and should not be written to.
    
    Parameters:
    
    sc - the error status code
    
    msg - the descriptive message
    
    Throws:
    
    IOException - If an input or output exception occurs
    
    IllegalStateException - If the response was committed
  - sendError
```
void sendError(int sc)
        throws IOException
```
    Sends an error response to the client using the specified status code and clears the buffer. This is equivalent to calling sendError(int, String) with the same status code and null for the message.
    
    Parameters:
    
    sc - the error status code
    
    Throws:
    
    IOException - If an input or output exception occurs
    
    IllegalStateException - If the response was committed before this method call
  - sendRedirect
```
void sendRedirect(String location)
           throws IOException
```
    Sends a temporary redirect response to the client using the specified redirect location URL. This method can accept relative URLs; the servlet container must convert the relative URL to an absolute URL before sending the response to the client. If the location is relative without a leading '/' the container interprets it as relative to the current request URI. If the location is relative with a leading '/' the container interprets it as relative to the servlet container root.
    If the response has already been committed, this method throws an IllegalStateException. After using this method, the response should be considered to be committed and should not be written to.
    
    Parameters:
    
    location - the redirect location URL
    
    Throws:
    
    IOException - If an input or output exception occurs
    
    IllegalStateException - If the response was committed or if a partial URL is given and cannot be converted into a valid URL
  - setDateHeader
```
void setDateHeader(String name,
                   long date)
```
    Sets a response header with the given name and date-value. The date is specified in terms of milliseconds since the epoch. If the header had already been set, the new value overwrites the previous one. The containsHeader method can be used to test for the presence of a header before setting its value.
    
    Parameters:
    
    name - the name of the header to set
    
    date - the assigned date value
    
    See Also:
    
    containsHeader(java.lang.String), addDateHeader(java.lang.String, long)
  - addDateHeader
```
void addDateHeader(String name,
                   long date)
```
    Adds a response header with the given name and date-value. The date is specified in terms of milliseconds since the epoch. This method allows response headers to have multiple values.
    
    Parameters:
    
    name - the name of the header to set
    
    date - the additional date value
    
    See Also:
    
    setDateHeader(java.lang.String, long)
  - setHeader
```
void setHeader(String name,
               String value)
```
    Sets a response header with the given name and value. If the header had already been set, the new value overwrites the previous one. The containsHeader method can be used to test for the presence of a header before setting its value.
    
    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:
    
    containsHeader(java.lang.String), addHeader(java.lang.String, java.lang.String)
  - addHeader
```
void addHeader(String name,
               String value)
```
    Adds a response header with the given name and value. This method allows response headers to have multiple values.
    
    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:
    
    setHeader(java.lang.String, java.lang.String)
  - setIntHeader
```
void setIntHeader(String name,
                  int value)
```
    Sets a response header with the given name and integer value. If the header had already been set, the new value overwrites the previous one. The containsHeader method can be used to test for the presence of a header before setting its value.
    
    Parameters:
    
    name - the name of the header
    
    value - the assigned integer value
    
    See Also:
    
    containsHeader(java.lang.String), addIntHeader(java.lang.String, int)
  - addIntHeader
```
void addIntHeader(String name,
                  int value)
```
    Adds a response header with the given name and integer value. This method allows response headers to have multiple values.
    
    Parameters:
    
    name - the name of the header
    
    value - the assigned integer value
    
    See Also:
    
    setIntHeader(java.lang.String, int)
  - setStatus
```
void setStatus(int sc)
```
    Sets the status code for this response. This method is used to set the return status code when there is no error (for example, for the status codes SC_OK or SC_MOVED_TEMPORARILY). If there is an error, and the caller wishes to invoke an error-page defined in the web application, the sendError method should be used instead.
    The container clears the buffer and sets the Location header, preserving cookies and other headers.
    
    Parameters:
    
    sc - the status code
    
    See Also:
    
    sendError(int, java.lang.String)
  - getCharacterEncoding
```
String getCharacterEncoding()
```
    Returns the name of the character encoding (MIME charset) used for the body sent in this response. The character encoding may have been specified explicitly using the setContentType(java.lang.String) method, or implicitly using the setLocale(java.util.Locale) method. Explicit specifications take precedence over implicit specifications. Calls made to these methods after getWriter has been called or after the response has been committed have no effect on the character encoding. If no character encoding has been specified, ISO-8859-1 is returned.
    See RFC 2047 (http://www.ietf.org/rfc/rfc2047.txt) for more information about character encoding and MIME.
    
    Returns:
    
    a String specifying the name of the character encoding, for example, UTF-8
  - getContentType
```
String getContentType()
```
    Returns the content type used for the MIME body sent in this response. The content type proper must have been specified using setContentType(java.lang.String) before the response is committed. If no content type has been specified, this method returns null. If a content type has been specified and a character encoding has been explicitly or implicitly specified as described in getCharacterEncoding(), the charset parameter is included in the string returned. If no character encoding has been specified, the charset parameter is omitted.
    
    Returns:
    
    a String specifying the content type, for example, text/html; charset=UTF-8, or null
    
    Since:
    
    2.4
  - getOutputStream
```
OutputStream getOutputStream()
                      throws IOException
```
    Returns a OutputStream suitable for writing binary data in the response. The servlet container does not encode the binary data.
    Calling flush() on the OutputStream commits the response. Either this method or getWriter() may be called to write the body, not both.
    
    Returns:
    
    a OutputStream for writing binary data
    
    Throws:
    
    IllegalStateException - if the getWriter method has been called on this response
    
    IOException - if an input or output exception occurred
    
    See Also:
    
    getWriter()
  - getWriter
```
PrintWriter getWriter()
               throws IOException
```
    Returns a PrintWriter object that can send character text to the client. The PrintWriter uses the character encoding returned by getCharacterEncoding(). If the response's character encoding has not been specified as described in getCharacterEncoding (i.e., the method just returns the default value ISO-8859-1), getWriter updates it to ISO-8859-1.
    Calling flush() on the PrintWriter commits the response.
    Either this method or getOutputStream() may be called to write the body, not both.
    
    Returns:
    
    a PrintWriter object that can return character data to the client
    
    Throws:
    
    UnsupportedEncodingException - if the character encoding returned by getCharacterEncoding cannot be used
    
    IllegalStateException - if the getOutputStream method has already been called for this response object
    
    IOException - if an input or output exception occurred
    
    See Also:
    
    getOutputStream()
  - setContentLength
```
void setContentLength(int len)
```
    Sets the length of the content body in the response In HTTP servlets, this method sets the HTTP Content-Length header.
    
    Parameters:
    
    len - an integer specifying the length of the content being returned to the client; sets the Content-Length header
  - setContentType
```
void setContentType(String type)
```
    Sets the content type of the response being sent to the client, if the response has not been committed yet. The given content type may include a character encoding specification, for example, text/html;charset=UTF-8. The response's character encoding is only set from the given content type if this method is called before getWriter is called.
    This method may be called repeatedly to change content type and character encoding. This method has no effect if called after the response has been committed. It does not set the response's character encoding if it is called after getWriter has been called or after the response has been committed.
    Containers must communicate the content type and the character encoding used for the servlet response's writer to the client if the protocol provides a way for doing so. In the case of HTTP, the Content-Type header is used.
    
    Parameters:
    
    type - a String specifying the MIME type of the content
    
    See Also:
    
    setLocale(java.util.Locale), getOutputStream(), getWriter()
  - setBufferSize
```
void setBufferSize(int size)
```
    Sets the preferred buffer size for the body of the response. The servlet container will use a buffer at least as large as the size requested. The actual buffer size used can be found using getBufferSize.
    A larger buffer allows more content to be written before anything is actually sent, thus providing the servlet with more time to set appropriate status codes and headers. A smaller buffer decreases server memory load and allows the client to start receiving data more quickly.
    This method must be called before any response body content is written; if content has been written or the response object has been committed, this method throws an IllegalStateException.
    
    Parameters:
    
    size - the preferred buffer size
    
    Throws:
    
    IllegalStateException - if this method is called after content has been written
    
    See Also:
    
    getBufferSize(), flushBuffer(), isCommitted(), reset()
  - getBufferSize
```
int getBufferSize()
```
    Returns the actual buffer size used for the response. If no buffering is used, this method returns 0.
    
    Returns:
    
    the actual buffer size used
    
    See Also:
    
    setBufferSize(int), flushBuffer(), isCommitted(), reset()
  - flushBuffer
```
void flushBuffer()
          throws IOException
```
    Forces any content in the buffer to be written to the client. A call to this method automatically commits the response, meaning the status code and headers will be written.
    
    Throws:
    
    IOException
    
    See Also:
    
    setBufferSize(int), getBufferSize(), isCommitted(), reset()
  - resetBuffer
```
void resetBuffer()
```
    Clears the content of the underlying buffer in the response without clearing headers or status code. If the response has been committed, this method throws an IllegalStateException.
    
    See Also:
    
    setBufferSize(int), getBufferSize(), isCommitted(), reset()
  - isCommitted
```
boolean isCommitted()
```
    Returns a boolean indicating if the response has been committed. A committed response has already had its status code and headers written.
    
    Returns:
    
    a boolean indicating if the response has been committed
    
    See Also:
    
    setBufferSize(int), getBufferSize(), flushBuffer(), reset()
  - reset
```
void reset()
```
    Clears any data that exists in the buffer as well as the status code and headers. If the response has been committed, this method throws an IllegalStateException.
    
    Throws:
    
    IllegalStateException - if the response has already been committed
    
    See Also:
    
    setBufferSize(int), getBufferSize(), flushBuffer(), isCommitted()
  - setLocale
```
void setLocale(Locale loc)
```
    Sets the locale of the response, if the response has not been committed yet. It also sets the response's character encoding appropriately for the locale, if the character encoding has not been explicitly set using setContentType(java.lang.String), getWriter hasn't been called yet, and the response hasn't been committed yet. If the deployment descriptor contains a locale-encoding-mapping-list element, and that element provides a mapping for the given locale, that mapping is used. Otherwise, the mapping from locale to character encoding is container dependent.
    This method may be called repeatedly to change locale and character encoding. The method has no effect if called after the response has been committed. It does not set the response's character encoding if it is called after setContentType(java.lang.String) has been called with a charset specification, after getWriter has been called, or after the response has been committed.
    Containers must communicate the locale and the character encoding used for the servlet response's writer to the client if the protocol provides a way for doing so. In the case of HTTP, the locale is communicated via the Content-Language header, the character encoding as part of the Content-Type header for text media types. Note that the character encoding cannot be communicated via HTTP headers if the servlet does not specify a content type; however, it is still used to encode text written via the servlet response's writer.
    
    Parameters:
    
    loc - the locale of the response
    
    See Also:
    
    getLocale(), setContentType(java.lang.String)
  - getLocale
```
Locale getLocale()
```
    Returns the locale specified for this response using the setLocale(java.util.Locale) method. Calls made to setLocale after the response is committed have no effect. If no locale has been specified, the container's default locale is returned.
    
    Returns:
    
    the locale
    
    See Also:
    
    setLocale(java.util.Locale)

Interface ExtensionPointHttpServletResponse

Field Summary

Method Summary

Field Detail

SC_CONTINUE

SC_SWITCHING_PROTOCOLS

SC_OK

SC_CREATED

SC_ACCEPTED

SC_NON_AUTHORITATIVE_INFORMATION

SC_NO_CONTENT

SC_RESET_CONTENT

SC_PARTIAL_CONTENT

SC_MULTIPLE_CHOICES

SC_MOVED_PERMANENTLY

SC_MOVED_TEMPORARILY

SC_FOUND

SC_SEE_OTHER

SC_NOT_MODIFIED

SC_USE_PROXY

SC_TEMPORARY_REDIRECT

SC_BAD_REQUEST

SC_UNAUTHORIZED

SC_PAYMENT_REQUIRED

SC_FORBIDDEN

SC_NOT_FOUND

SC_METHOD_NOT_ALLOWED

SC_NOT_ACCEPTABLE

SC_PROXY_AUTHENTICATION_REQUIRED

SC_REQUEST_TIMEOUT

SC_CONFLICT

SC_GONE

SC_LENGTH_REQUIRED

SC_PRECONDITION_FAILED

SC_REQUEST_ENTITY_TOO_LARGE

SC_REQUEST_URI_TOO_LONG

SC_UNSUPPORTED_MEDIA_TYPE

SC_REQUESTED_RANGE_NOT_SATISFIABLE

SC_EXPECTATION_FAILED

SC_INTERNAL_SERVER_ERROR

SC_NOT_IMPLEMENTED

SC_BAD_GATEWAY

SC_SERVICE_UNAVAILABLE

SC_GATEWAY_TIMEOUT

SC_HTTP_VERSION_NOT_SUPPORTED

Method Detail

containsHeader

sendError

sendError

sendRedirect

setDateHeader

addDateHeader

setHeader

addHeader

setIntHeader

addIntHeader

setStatus

getCharacterEncoding

getContentType

getOutputStream

getWriter

setContentLength

setContentType

setBufferSize

getBufferSize

flushBuffer

resetBuffer

isCommitted

reset

setLocale

getLocale