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Java EE 5 SDK 深圳电信培训中心.徐海蛟老师. |
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摘要: 嵌套 | 字段 | 构造器 | 方法 | 详细信息: 字段 | 构造器 | 方法 |
javax.servlet.http Interface HttpServletResponse
- 所有父接口:
- ServletResponse
- 所有已知实现子孙类:
- HttpServletResponseWrapper
public interface HttpServletResponse
- extends ServletResponse
Extends the ServletResponse
interface to provide HTTP-specific
functionality in sending a response. For example, it has methods
to access HTTP headers and cookies.
The servlet container creates an HttpServletResponse
object
and passes it as an argument to the servlet's service methods
(doGet
, doPost
, etc).
- 作者:
- Various
- 另请参见:
ServletResponse
字段摘要 | |
---|---|
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. |
方法摘要 | |
---|---|
void |
addCookie(Cookie cookie)
Adds the specified cookie to the response. |
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. |
String |
encodeRedirectUrl(String url)
Deprecated. As of version 2.1, use encodeRedirectURL(String url) instead |
String |
encodeRedirectURL(String url)
Encodes the specified URL for use in the sendRedirect method or, if encoding is not needed,
returns the URL unchanged. |
String |
encodeUrl(String url)
Deprecated. As of version 2.1, use encodeURL(String url) instead |
String |
encodeURL(String url)
Encodes the specified URL by including the session ID in it, or, if encoding is not needed, returns the URL unchanged. |
void |
sendError(int sc)
Sends an error response to the client using the specified status code and clearing the buffer. |
void |
sendError(int sc,
String msg)
Sends an error response to the client using the specified status. |
void |
sendRedirect(String location)
Sends a temporary redirect response to the client using the specified redirect location URL. |
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 |
setStatus(int sc)
Sets the status code for this response. |
void |
setStatus(int sc,
String sm)
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) .
Sets the status code and message for this response. |
Methods inherited from interface javax.servlet.ServletResponse |
---|
flushBuffer, getBufferSize, getCharacterEncoding, getContentType, getLocale, getOutputStream, getWriter, isCommitted, reset, resetBuffer, setBufferSize, setCharacterEncoding, setContentLength, setContentType, setLocale |
字段详细信息 |
---|
SC_CONTINUE
static final int SC_CONTINUE
- Status code (100) indicating the client can continue.
- 另请参见:
- 常量字段
SC_SWITCHING_PROTOCOLS
static final int SC_SWITCHING_PROTOCOLS
- Status code (101) indicating the server is switching protocols
according to Upgrade header.
- 另请参见:
- 常量字段
SC_OK
static final int SC_OK
- Status code (200) indicating the request succeeded normally.
- 另请参见:
- 常量字段
SC_CREATED
static final int SC_CREATED
- Status code (201) indicating the request succeeded and created
a new resource on the server.
- 另请参见:
- 常量字段
SC_ACCEPTED
static final int SC_ACCEPTED
- Status code (202) indicating that a request was accepted for
processing, but was not completed.
- 另请参见:
- 常量字段
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.
- 另请参见:
- 常量字段
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.
- 另请参见:
- 常量字段
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.
- 另请参见:
- 常量字段
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.
- 另请参见:
- 常量字段
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.
- 另请参见:
- 常量字段
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.
- 另请参见:
- 常量字段
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.
- 另请参见:
- 常量字段
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.
- 另请参见:
- 常量字段
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.
- 另请参见:
- 常量字段
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.
- 另请参见:
- 常量字段
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.- 另请参见:
- 常量字段
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.- 另请参见:
- 常量字段
SC_BAD_REQUEST
static final int SC_BAD_REQUEST
- Status code (400) indicating the request sent by the client was
syntactically incorrect.
- 另请参见:
- 常量字段
SC_UNAUTHORIZED
static final int SC_UNAUTHORIZED
- Status code (401) indicating that the request requires HTTP
authentication.
- 另请参见:
- 常量字段
SC_PAYMENT_REQUIRED
static final int SC_PAYMENT_REQUIRED
- Status code (402) reserved for future use.
- 另请参见:
- 常量字段
SC_FORBIDDEN
static final int SC_FORBIDDEN
- Status code (403) indicating the server understood the request
but refused to fulfill it.
- 另请参见:
- 常量字段
SC_NOT_FOUND
static final int SC_NOT_FOUND
- Status code (404) indicating that the requested resource is not
available.
- 另请参见:
- 常量字段
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 theRequest-URI
.- 另请参见:
- 常量字段
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.
- 另请参见:
- 常量字段
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.
- 另请参见:
- 常量字段
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.
- 另请参见:
- 常量字段
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.
- 另请参见:
- 常量字段
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.
- 另请参见:
- 常量字段
SC_LENGTH_REQUIRED
static final int SC_LENGTH_REQUIRED
- Status code (411) indicating that the request cannot be handled
without a defined
Content-Length
.- 另请参见:
- 常量字段
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.
- 另请参见:
- 常量字段
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.
- 另请参见:
- 常量字段
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.- 另请参见:
- 常量字段
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.
- 另请参见:
- 常量字段
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.
- 另请参见:
- 常量字段
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.
- 另请参见:
- 常量字段
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.
- 另请参见:
- 常量字段
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.
- 另请参见:
- 常量字段
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.
- 另请参见:
- 常量字段
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.
- 另请参见:
- 常量字段
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.
- 另请参见:
- 常量字段
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.
- 另请参见:
- 常量字段
方法详细信息 |
---|
addCookie
void addCookie(Cookie cookie)
- Adds the specified cookie to the response. This method can be called
multiple times to set more than one cookie.
- 参数:
cookie
- the Cookie to return to the client
containsHeader
boolean containsHeader(String name)
- Returns a boolean indicating whether the named response header
has already been set.
- 参数:
name
- the header name- 返回:
true
if the named response header has already been set;false
otherwise
encodeURL
String encodeURL(String url)
- 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.
- 参数:
url
- the url to be encoded.- 返回:
- the encoded URL if encoding is needed; the unchanged URL otherwise.
encodeRedirectURL
String encodeRedirectURL(String url)
- 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 theencodeURL
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. - 参数:
url
- the url to be encoded.- 返回:
- the encoded URL if encoding is needed; the unchanged URL otherwise.
- 另请参见:
sendRedirect(java.lang.String)
,encodeUrl(java.lang.String)
encodeUrl
String encodeUrl(String url)
- Deprecated. As of version 2.1, use encodeURL(String url) instead
- 参数:
url
- the url to be encoded.- 返回:
- the encoded URL if encoding is needed; the unchanged URL otherwise.
encodeRedirectUrl
String encodeRedirectUrl(String url)
- Deprecated. As of version 2.1, use
encodeRedirectURL(String url) instead
- 参数:
url
- the url to be encoded.- 返回:
- the encoded URL if encoding is needed; the unchanged URL otherwise.
sendError
void sendError(int sc, String msg) throws IOException
- Sends an error response to the client using the specified
status. 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.
- 参数:
sc
- the error status codemsg
- the descriptive message- 抛出异常:
IOException
- If an input or output exception occursIllegalStateException
- 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 clearing the buffer.
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.
- 参数:
sc
- the error status code- 抛出异常:
IOException
- If an input or output exception occursIllegalStateException
- 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.
- 参数:
location
- the redirect location URL- 抛出异常:
IOException
- If an input or output exception occursIllegalStateException
- 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. - 参数:
name
- the name of the header to setdate
- the assigned date value- 另请参见:
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.
- 参数:
name
- the name of the header to setdate
- the additional date value- 另请参见:
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. - 参数:
name
- the name of the headervalue
- the header value If it contains octet string, it should be encoded according to RFC 2047 (http://www.ietf.org/rfc/rfc2047.txt)- 另请参见:
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.
- 参数:
name
- the name of the headervalue
- the additional header value If it contains octet string, it should be encoded according to RFC 2047 (http://www.ietf.org/rfc/rfc2047.txt)- 另请参见:
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. - 参数:
name
- the name of the headervalue
- the assigned integer value- 另请参见:
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.
- 参数:
name
- the name of the headervalue
- the assigned integer value- 另请参见:
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.
- 参数:
sc
- the status code- 另请参见:
sendError(int, java.lang.String)
setStatus
void setStatus(int sc, String sm)
- 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 usesendError(int, String)
. Sets the status code and message for this response. - 参数:
sc
- the status codesm
- the status message
|
Java EE 5 SDK 深圳电信培训中心.徐海蛟老师. |
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摘要: 嵌套 | 字段 | 构造器 | 方法 | 详细信息: 字段 | 构造器 | 方法 |
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