org.eclipse.jetty.server
Class ServletResponseHttpWrapper

java.lang.Object
  extended by javax.servlet.ServletResponseWrapper
      extended by org.eclipse.jetty.server.ServletResponseHttpWrapper
All Implemented Interfaces:
HttpServletResponse, ServletResponse

public class ServletResponseHttpWrapper
extends ServletResponseWrapper
implements HttpServletResponse

Wrapper to tunnel a ServletResponse via a HttpServletResponse


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
ServletResponseHttpWrapper(ServletResponse response)
           
 
Method Summary
 void addCookie(Cookie cookie)
          Adds the specified cookie to the response.
 void addDateHeader(java.lang.String name, long date)
          Adds a response header with the given name and date-value.
 void addHeader(java.lang.String name, java.lang.String value)
          Adds a response header with the given name and value.
 void addIntHeader(java.lang.String name, int value)
          Adds a response header with the given name and integer value.
 boolean containsHeader(java.lang.String name)
          Returns a boolean indicating whether the named response header has already been set.
 java.lang.String encodeRedirectUrl(java.lang.String url)
           
 java.lang.String encodeRedirectURL(java.lang.String url)
          Encodes the specified URL for use in the sendRedirect method or, if encoding is not needed, returns the URL unchanged.
 java.lang.String encodeUrl(java.lang.String url)
           
 java.lang.String encodeURL(java.lang.String url)
          Encodes the specified URL by including the session ID in it, or, if encoding is not needed, returns the URL unchanged.
 java.lang.String getHeader(java.lang.String name)
          Gets the value of the response header with the given name.
 java.util.Collection<java.lang.String> getHeaderNames()
          Gets the names of the headers of this response.
 java.util.Collection<java.lang.String> getHeaders(java.lang.String name)
          Gets the values of the response header with the given name.
 int getStatus()
          Gets the current status code of this response.
 void sendError(int sc)
          Sends an error response to the client using the specified status code and clears the buffer.
 void sendError(int sc, java.lang.String msg)
          Sends an error response to the client using the specified status and clears the buffer.
 void sendRedirect(java.lang.String location)
          Sends a temporary redirect response to the client using the specified redirect location URL and clears the buffer.
 void setDateHeader(java.lang.String name, long date)
          Sets a response header with the given name and date-value.
 void setHeader(java.lang.String name, java.lang.String value)
          Sets a response header with the given name and value.
 void setIntHeader(java.lang.String name, int value)
          Sets a response header with the given name and integer value.
 void setStatus(int sc)
          Sets the status code for this response.
 void setStatus(int sc, java.lang.String sm)
           
 
Methods inherited from class javax.servlet.ServletResponseWrapper
flushBuffer, getBufferSize, getCharacterEncoding, getContentType, getLocale, getOutputStream, getResponse, getWriter, isCommitted, isWrapperFor, isWrapperFor, 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

ServletResponseHttpWrapper

public ServletResponseHttpWrapper(ServletResponse response)
Method Detail

addCookie

public void addCookie(Cookie cookie)
Description copied from interface: HttpServletResponse
Adds the specified cookie to the response. This method can be called multiple times to set more than one cookie.

Specified by:
addCookie in interface HttpServletResponse
Parameters:
cookie - the Cookie to return to the client

containsHeader

public boolean containsHeader(java.lang.String name)
Description copied from interface: HttpServletResponse
Returns a boolean indicating whether the named response header has already been set.

Specified by:
containsHeader in interface HttpServletResponse
Parameters:
name - the header name
Returns:
true if the named response header has already been set; false otherwise

encodeURL

public java.lang.String encodeURL(java.lang.String url)
Description copied from interface: HttpServletResponse
Encodes the specified URL by including the session ID in it, or, if encoding is not needed, returns the URL unchanged. The implementation of this method includes the logic to determine whether the session ID needs to be encoded in the URL. For example, if the browser supports cookies, or session tracking is turned off, URL encoding is unnecessary.

For robust session tracking, all URLs emitted by a servlet should be run through this method. Otherwise, URL rewriting cannot be used with browsers which do not support cookies.

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.

encodeRedirectURL

public java.lang.String encodeRedirectURL(java.lang.String url)
Description copied from interface: HttpServletResponse
Encodes the specified URL for use in the sendRedirect method or, if encoding is not needed, returns the URL unchanged. The implementation of this method includes the logic to determine whether the session ID needs to be encoded in the URL. Because the rules for making this determination can differ from those used to decide whether to encode a normal link, this method is separated from the encodeURL method.

All URLs sent to the HttpServletResponse.sendRedirect method should be run through this method. Otherwise, URL rewriting cannot be used with browsers which do not support cookies.

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)

encodeUrl

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

encodeRedirectUrl

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

sendError

public void sendError(int sc,
                      java.lang.String msg)
               throws java.io.IOException
Description copied from interface: HttpServletResponse
Sends an error response to the client using the specified status and clears the 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". The server will preserve cookies and may clear or update any headers needed to serve the error page as a valid response. 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 and the msg parameter will be ignored.

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.

Specified by:
sendError in interface HttpServletResponse
Parameters:
sc - the error status code
msg - the descriptive message
Throws:
java.io.IOException - If an input or output exception occurs

sendError

public void sendError(int sc)
               throws java.io.IOException
Description copied from interface: HttpServletResponse
Sends an error response to the client using the specified status code and clears the buffer. The server will preserve cookies and may clear or update any headers needed to serve the error page as a valid response. If an error-page declaration has been made for the web application corresponding to the status code passed in, it will be served back the error page

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.

Specified by:
sendError in interface HttpServletResponse
Parameters:
sc - the error status code
Throws:
java.io.IOException - If an input or output exception occurs

sendRedirect

public void sendRedirect(java.lang.String location)
                  throws java.io.IOException
Description copied from interface: HttpServletResponse
Sends a temporary redirect response to the client using the specified redirect location URL and clears the buffer. The buffer will be replaced with the data set by this method. Calling this method sets the status code to HttpServletResponse.SC_FOUND 302 (Found). 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.

Specified by:
sendRedirect in interface HttpServletResponse
Parameters:
location - the redirect location URL
Throws:
java.io.IOException - If an input or output exception occurs

setDateHeader

public void setDateHeader(java.lang.String name,
                          long date)
Description copied from interface: HttpServletResponse
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.

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)

addDateHeader

public void addDateHeader(java.lang.String name,
                          long date)
Description copied from interface: HttpServletResponse
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.

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)

setHeader

public void setHeader(java.lang.String name,
                      java.lang.String value)
Description copied from interface: HttpServletResponse
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.

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)

addHeader

public void addHeader(java.lang.String name,
                      java.lang.String value)
Description copied from interface: HttpServletResponse
Adds a response header with the given name and value. This method allows response headers to have multiple values.

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)

setIntHeader

public void setIntHeader(java.lang.String name,
                         int value)
Description copied from interface: HttpServletResponse
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.

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)

addIntHeader

public void addIntHeader(java.lang.String name,
                         int value)
Description copied from interface: HttpServletResponse
Adds a response header with the given name and integer value. This method allows response headers to have multiple values.

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)

setStatus

public void setStatus(int sc)
Description copied from interface: HttpServletResponse
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 SC_OK or SC_MOVED_TEMPORARILY status codes).

If this method is used to set an error code, then the container's error page mechanism will not be triggered. If there is an error and the caller wishes to invoke an error page defined in the web application, then HttpServletResponse.sendError(int, java.lang.String) must be used instead.

This method preserves any cookies and other response headers.

Valid status codes are those in the 2XX, 3XX, 4XX, and 5XX ranges. Other status codes are treated as container specific.

Specified by:
setStatus in interface HttpServletResponse
Parameters:
sc - the status code
See Also:
HttpServletResponse.sendError(int, java.lang.String)

setStatus

public void setStatus(int sc,
                      java.lang.String sm)
Specified by:
setStatus in interface HttpServletResponse
Parameters:
sc - the status code
sm - the status message

getHeader

public java.lang.String getHeader(java.lang.String name)
Description copied from interface: HttpServletResponse
Gets the value of the response header with the given name.

If a response header with the given name exists and contains multiple values, the value that was added first will be returned.

This method considers only response headers set or added via HttpServletResponse.setHeader(java.lang.String, java.lang.String), HttpServletResponse.addHeader(java.lang.String, java.lang.String), HttpServletResponse.setDateHeader(java.lang.String, long), HttpServletResponse.addDateHeader(java.lang.String, long), HttpServletResponse.setIntHeader(java.lang.String, int), or HttpServletResponse.addIntHeader(java.lang.String, int), respectively.

Specified by:
getHeader in interface HttpServletResponse
Parameters:
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 this response
See Also:
HttpServletResponse.getHeader(java.lang.String)

getHeaderNames

public java.util.Collection<java.lang.String> getHeaderNames()
Description copied from interface: HttpServletResponse
Gets the names of the headers of this response.

This method considers only response headers set or added via HttpServletResponse.setHeader(java.lang.String, java.lang.String), HttpServletResponse.addHeader(java.lang.String, java.lang.String), HttpServletResponse.setDateHeader(java.lang.String, long), HttpServletResponse.addDateHeader(java.lang.String, long), HttpServletResponse.setIntHeader(java.lang.String, int), or HttpServletResponse.addIntHeader(java.lang.String, int), respectively.

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

Specified by:
getHeaderNames in interface HttpServletResponse
Returns:
a (possibly empty) Collection of the names of the headers of this response
See Also:
HttpServletResponse.getHeaderNames()

getHeaders

public java.util.Collection<java.lang.String> getHeaders(java.lang.String name)
Description copied from interface: HttpServletResponse
Gets the values of the response header with the given name.

This method considers only response headers set or added via HttpServletResponse.setHeader(java.lang.String, java.lang.String), HttpServletResponse.addHeader(java.lang.String, java.lang.String), HttpServletResponse.setDateHeader(java.lang.String, long), HttpServletResponse.addDateHeader(java.lang.String, long), HttpServletResponse.setIntHeader(java.lang.String, int), or HttpServletResponse.addIntHeader(java.lang.String, int), respectively.

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

Specified by:
getHeaders in interface HttpServletResponse
Parameters:
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
See Also:
HttpServletResponse.getHeaders(java.lang.String)

getStatus

public int getStatus()
Description copied from interface: HttpServletResponse
Gets the current status code of this response.

Specified by:
getStatus in interface HttpServletResponse
Returns:
the current status code of this response
See Also:
HttpServletResponse.getStatus()


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