Package org.apache.catalina.connector

Class RequestFacade

java.lang.Object

org.apache.catalina.connector.RequestFacade

All Implemented Interfaces:

HttpServletRequest, ServletRequest

public class RequestFacade
extends Object
implements HttpServletRequest

Facade class that wraps a Coyote request object. All methods are delegated to the wrapped request.

Author:

Craig R. McClanahan, Remy Maucherat

Field Summary

Fields

Modifier and Type	Field	Description
protected Request	request	The wrapped request.

Fields inherited from interface jakarta.servlet.http.HttpServletRequest

BASIC_AUTH, CLIENT_CERT_AUTH, DIGEST_AUTH, FORM_AUTH

Constructor Summary

Constructors

Constructor	Description
RequestFacade(Request request)	Construct a wrapper for the specified request.

Method Summary

Modifier and Type	Method	Description
boolean	authenticate(HttpServletResponse response)	Triggers the same authentication process as would be triggered if the request is for a resource that is protected by a security constraint.
String	changeSessionId()	Changes the session ID of the session associated with this request.
void	clear()	Clear facade.
protected Object	clone()	Prevent cloning the facade.
boolean	getAllowTrace()
AsyncContext	getAsyncContext()	Get the current AsyncContext.
Object	getAttribute(String name)	Returns the value of the named attribute as an Object, or null if no attribute of the given name exists.
Enumeration<String>	getAttributeNames()	Returns an Enumeration containing the names of the attributes available to this request.
String	getAuthType()	Returns the name of the authentication scheme used to protect the servlet.
String	getCharacterEncoding()	Returns the name of the character encoding used in the body of this request.
int	getContentLength()	Returns the length, in bytes, of the request body and made available by the input stream, or -1 if the length is not known.
long	getContentLengthLong()	Returns the length, in bytes, of the request body and made available by the input stream, or -1 if the length is not known.
String	getContentType()	Returns the MIME type of the body of the request, or null if the type is not known.
String	getContextPath()	Returns the portion of the request URI that indicates the context of the request.
Cookie[]	getCookies()	Returns an array containing all of the Cookie objects the client sent with this request.
long	getDateHeader(String name)	Returns the value of the specified request header as a long value that represents a Date object.
DispatcherType	getDispatcherType()
String	getHeader(String name)	Returns the value of the specified request header as a String.
Enumeration<String>	getHeaderNames()	Returns an enumeration of all the header names this request contains.
Enumeration<String>	getHeaders(String name)	Returns all the values of the specified request header as an Enumeration of String objects.
HttpServletMapping	getHttpServletMapping()	Obtain the mapping information for this request.
ServletInputStream	getInputStream()	Retrieves the body of the request as binary data using a ServletInputStream.
int	getIntHeader(String name)	Returns the value of the specified request header as an int.
String	getLocalAddr()	Returns the Internet Protocol (IP) address of the interface on which the request was received.
Locale	getLocale()	Returns the preferred Locale that the client will accept content in, based on the Accept-Language header.
Enumeration<Locale>	getLocales()	Returns an Enumeration of Locale objects indicating, in decreasing order starting with the preferred locale, the locales that are acceptable to the client based on the Accept-Language header.
String	getLocalName()	Returns the host name of the Internet Protocol (IP) interface on which the request was received.
int	getLocalPort()	Returns the Internet Protocol (IP) port number of the interface on which the request was received.
String	getMethod()	Returns the name of the HTTP method with which this request was made, for example, GET, POST, or PUT.
String	getParameter(String name)	Returns the value of a request parameter as a String, or null if the parameter does not exist.
Map<String,String[]>	getParameterMap()	Returns a java.util.Map of the parameters of this request.
Enumeration<String>	getParameterNames()	Returns an Enumeration of String objects containing the names of the parameters contained in this request.
String[]	getParameterValues(String name)	Returns an array of String objects containing all of the values the given request parameter has, or null if the parameter does not exist.
Part	getPart(String name)	Gets the named Part or null if the Part does not exist.
Collection<Part>	getParts()	Return a collection of all uploaded Parts.
String	getPathInfo()	Returns any extra path information associated with the URL the client sent when it made this request.
String	getPathTranslated()	Returns any extra path information after the servlet name but before the query string, and translates it to a real path.
String	getProtocol()	Returns the name and version of the protocol the request uses in the form protocol/majorVersion.minorVersion, for example, HTTP/1.1.
String	getProtocolRequestId()	Obtain the request identifier for this request as defined by the protocol in use.
String	getQueryString()	Returns the query string that is contained in the request URL after the path.
BufferedReader	getReader()	Retrieves the body of the request as character data using a BufferedReader.
String	getRemoteAddr()	Returns the Internet Protocol (IP) address of the client or last proxy that sent the request.
String	getRemoteHost()	Returns the fully qualified name of the client or the last proxy that sent the request.
int	getRemotePort()	Returns the Internet Protocol (IP) source port of the client or last proxy that sent the request.
String	getRemoteUser()	Returns the login of the user making this request, if the user has been authenticated, or null if the user has not been authenticated.
RequestDispatcher	getRequestDispatcher(String path)	Returns a RequestDispatcher object that acts as a wrapper for the resource located at the given path.
String	getRequestedSessionId()	Returns the session ID specified by the client.
String	getRequestId()	Obtain a unique (within the lifetime of the Servlet container) identifier string for this request.
String	getRequestURI()	Returns the part of this request's URL from the protocol name up to the query string in the first line of the HTTP request.
StringBuffer	getRequestURL()	Reconstructs the URL the client used to make the request.
String	getScheme()	Returns the name of the scheme used to make this request, for example, http, https, or ftp.
String	getServerName()	Returns the host name of the server to which the request was sent.
int	getServerPort()	Returns the port number to which the request was sent.
ServletConnection	getServletConnection()	Obtain details of the network connection to the Servlet container that is being used by this request.
ServletContext	getServletContext()
String	getServletPath()	Returns the part of this request's URL that calls the servlet.
HttpSession	getSession()	Returns the current session associated with this request, or if the request does not have a session, creates one.
HttpSession	getSession(boolean create)	Returns the current HttpSession associated with this request or, if there is no current session and create is true, returns a new session.
Map<String,String>	getTrailerFields()	Obtain a Map of the trailer fields that is not backed by the request object.
Principal	getUserPrincipal()	Returns a java.security.Principal object containing the name of the current authenticated user.
boolean	isAsyncStarted()
boolean	isAsyncSupported()
boolean	isRequestedSessionIdFromCookie()	Checks whether the requested session ID came in as a cookie.
boolean	isRequestedSessionIdFromURL()	Checks whether the requested session ID came in as part of the request URL.
boolean	isRequestedSessionIdValid()	Checks whether the requested session ID is still valid.
boolean	isSecure()	Returns a boolean indicating whether this request was made using a secure channel, such as HTTPS.
boolean	isTrailerFieldsReady()	Are trailer fields ready to be read (there may still be no trailers to read).
boolean	isUserInRole(String role)	Returns a boolean indicating whether the authenticated user is included in the specified logical "role".
void	login(String username, String password)	Authenticate the provided user name and password and then associated the authenticated user with the request.
void	logout()	Removes any authenticated user from the request.
void	removeAttribute(String name)	Removes an attribute from this request.
void	setAttribute(String name, Object o)	Stores an attribute in this request.
void	setCharacterEncoding(String encoding)	Overrides the name of the character encoding used in the body of this request.
void	setCharacterEncoding(Charset encoding)	Overrides the character encoding used in the body of this request.
AsyncContext	startAsync()
AsyncContext	startAsync(ServletRequest request, ServletResponse response)
<T extends HttpUpgradeHandler> T	upgrade(Class<T> httpUpgradeHandlerClass)	Start the HTTP upgrade process and create and instance of the provided protocol handler class.

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface jakarta.servlet.http.HttpServletRequest

newPushBuilder

Field Details

request

protected Request request

The wrapped request.

Constructor Details

RequestFacade

public RequestFacade(Request request)

Construct a wrapper for the specified request.

Parameters:

request - The request to be wrapped

Method Details

clear

public void clear()

Clear facade.

clone

protected Object clone()
                throws CloneNotSupportedException

Prevent cloning the facade.

Overrides:

clone in class Object

Throws:

CloneNotSupportedException

getAttribute

public Object getAttribute(String name)

Description copied from interface: jakarta.servlet.ServletRequest

Returns the value of the named attribute as an Object, or null if no attribute of the given name exists.

Attributes can be set two ways. The servlet container may set attributes to make available custom information about a request. For example, for requests made using HTTPS, the attribute jakarta.servlet.request.X509Certificate can be used to retrieve information on the certificate of the client. Attributes can also be set programmatically using ServletRequest.setAttribute(java.lang.String, java.lang.Object). This allows information to be embedded into a request before a RequestDispatcher call.

Attribute names should follow the same conventions as package names. Names beginning with jakarta.* are reserved for use by the Jakarta EE platform.

Specified by:

getAttribute in interface ServletRequest

Parameters:

name - a String specifying the name of the attribute

Returns:

an Object containing the value of the attribute, or null if the attribute does not exist

getAttributeNames

public Enumeration<String> getAttributeNames()

Description copied from interface: jakarta.servlet.ServletRequest

Returns an Enumeration containing the names of the attributes available to this request. This method returns an empty Enumeration if the request has no attributes available to it.

Specified by:

getAttributeNames in interface ServletRequest

Returns:

an Enumeration of strings containing the names of the request's attributes

getCharacterEncoding

public String getCharacterEncoding()

Description copied from interface: jakarta.servlet.ServletRequest

Returns the name of the character encoding used in the body of this request. This method returns null if the no character encoding has been specified. The following priority order is used to determine the specified encoding:

1. per request
2. web application default via the deployment descriptor or ServletContext.setRequestCharacterEncoding(String)
3. container default via container specific configuration

Specified by:

getCharacterEncoding in interface ServletRequest

Returns:

a String containing the name of the character encoding, or null if the request does not specify a character encoding

setCharacterEncoding

public void setCharacterEncoding(String encoding)
                          throws UnsupportedEncodingException

Description copied from interface: jakarta.servlet.ServletRequest

Overrides the name of the character encoding used in the body of this request. This method must be called prior to reading request parameters or reading input using getReader().

Specified by:

setCharacterEncoding in interface ServletRequest

Parameters:

encoding - a String containing the name of the character encoding

Throws:

UnsupportedEncodingException - if this is not a valid encoding

setCharacterEncoding

public void setCharacterEncoding(Charset encoding)

Description copied from interface: jakarta.servlet.ServletRequest

Overrides the character encoding used in the body of this request. This method must be called prior to reading request parameters or reading input using getReader(). Otherwise, it has no effect.

Implementations are strongly encouraged to override this default method and provide a more efficient implementation.

Specified by:

setCharacterEncoding in interface ServletRequest

Parameters:

encoding - Charset representing the character encoding.

getContentLength

public int getContentLength()

Description copied from interface: jakarta.servlet.ServletRequest

Returns the length, in bytes, of the request body and made available by the input stream, or -1 if the length is not known. For HTTP servlets, same as the value of the CGI variable CONTENT_LENGTH.

Specified by:

getContentLength in interface ServletRequest

Returns:

an integer containing the length of the request body or -1 if the length is not known or is greater than Integer.MAX_VALUE

getContentType

public String getContentType()

Description copied from interface: jakarta.servlet.ServletRequest

Returns the MIME type of the body of the request, or null if the type is not known. For HTTP servlets, same as the value of the CGI variable CONTENT_TYPE.

Specified by:

getContentType in interface ServletRequest

Returns:

a String containing the name of the MIME type of the request, or null if the type is not known

getInputStream

public ServletInputStream getInputStream()
                                  throws IOException

Description copied from interface: jakarta.servlet.ServletRequest

Retrieves the body of the request as binary data using a ServletInputStream. Either this method or ServletRequest.getReader() may be called to read the body, not both.

Specified by:

getInputStream in interface ServletRequest

Returns:

a ServletInputStream object containing the body of the request

Throws:

IOException - if an input or output exception occurred

getParameter

public String getParameter(String name)

Description copied from interface: jakarta.servlet.ServletRequest

Returns the value of a request parameter as a String, or null if the parameter does not exist. Request parameters are extra information sent with the request. For HTTP servlets, parameters are contained in the query string or posted form data.

You should only use this method when you are sure the parameter has only one value. If the parameter might have more than one value, use ServletRequest.getParameterValues(java.lang.String).

If you use this method with a multivalued parameter, the value returned is equal to the first value in the array returned by getParameterValues.

If the parameter data was sent in the request body, such as occurs with an HTTP POST request, then reading the body directly via ServletRequest.getInputStream() or ServletRequest.getReader() can interfere with the execution of this method.

If not already parsed, calling this method will trigger the parsing of the query string, POSTed form data where the request body has content type is application/x-www-form-urlencoded and POSTed form data where the request body has content-type multipart/form-data and the Servlet is configured with a MultipartConfig annotation or a multipart-config element in the deployment descriptor.

Specified by:

getParameter in interface ServletRequest

Parameters:

name - a String specifying the name of the parameter

Returns:

a String representing the single value of the parameter

See Also:

• ServletRequest.getParameterValues(java.lang.String)

getParameterNames

public Enumeration<String> getParameterNames()

Description copied from interface: jakarta.servlet.ServletRequest

Returns an Enumeration of String objects containing the names of the parameters contained in this request. If the request has no parameters, the method returns an empty Enumeration.

If not already parsed, calling this method will trigger the parsing of the query string, POSTed form data where the request body has content type is application/x-www-form-urlencoded and POSTed form data where the request body has content-type multipart/form-data and the Servlet is configured with a MultipartConfig annotation or a multipart-config element in the deployment descriptor.

Specified by:

getParameterNames in interface ServletRequest

Returns:

an Enumeration of String objects, each String containing the name of a request parameter; or an empty Enumeration if the request has no parameters

getParameterValues

public String[] getParameterValues(String name)

Description copied from interface: jakarta.servlet.ServletRequest

Returns an array of String objects containing all of the values the given request parameter has, or null if the parameter does not exist.

If the parameter has a single value, the array has a length of 1.

If not already parsed, calling this method will trigger the parsing of the query string, POSTed form data where the request body has content type is application/x-www-form-urlencoded and POSTed form data where the request body has content-type multipart/form-data and the Servlet is configured with a MultipartConfig annotation or a multipart-config element in the deployment descriptor.

Specified by:

getParameterValues in interface ServletRequest

Parameters:

name - a String containing the name of the parameter whose value is requested

Returns:

an array of String objects containing the parameter's values

See Also:

• ServletRequest.getParameter(java.lang.String)

getParameterMap

public Map<String,String[]> getParameterMap()

Description copied from interface: jakarta.servlet.ServletRequest

Returns a java.util.Map of the parameters of this request. Request parameters are extra information sent with the request. For HTTP servlets, parameters are contained in the query string or posted form data.

If not already parsed, calling this method will trigger the parsing of the query string, POSTed form data where the request body has content type is application/x-www-form-urlencoded and POSTed form data where the request body has content-type multipart/form-data and the Servlet is configured with a MultipartConfig annotation or a multipart-config element in the deployment descriptor.

Specified by:

getParameterMap in interface ServletRequest

Returns:

an immutable java.util.Map containing parameter names as keys and parameter values as map values. The keys in the parameter map are of type String. The values in the parameter map are of type String array.

getProtocol

public String getProtocol()

Description copied from interface: jakarta.servlet.ServletRequest

Returns the name and version of the protocol the request uses in the form protocol/majorVersion.minorVersion, for example, HTTP/1.1. For HTTP servlets, the value returned is the same as the value of the CGI variable SERVER_PROTOCOL.

Specified by:

getProtocol in interface ServletRequest

Returns:

a String containing the protocol name and version number

getScheme

public String getScheme()

Description copied from interface: jakarta.servlet.ServletRequest

Returns the name of the scheme used to make this request, for example, http, https, or ftp. Different schemes have different rules for constructing URLs, as noted in RFC 1738.

Specified by:

getScheme in interface ServletRequest

Returns:

a String containing the name of the scheme used to make this request

getServerName

public String getServerName()

Description copied from interface: jakarta.servlet.ServletRequest

Returns the host name of the server to which the request was sent. It is the value of the part before ":" in the Host header value, if any, or the resolved server name, or the server IP address.

Specified by:

getServerName in interface ServletRequest

Returns:

a String containing the name of the server

getServerPort

public int getServerPort()

Description copied from interface: jakarta.servlet.ServletRequest

Returns the port number to which the request was sent. It is the value of the part after ":" in the Host header value, if any, or the server port where the client connection was accepted on.

Specified by:

getServerPort in interface ServletRequest

Returns:

an integer specifying the port number

getReader

public BufferedReader getReader()
                         throws IOException

Description copied from interface: jakarta.servlet.ServletRequest

Retrieves the body of the request as character data using a BufferedReader. The reader translates the character data according to the character encoding used on the body. Either this method or ServletRequest.getInputStream() may be called to read the body, not both.

Specified by:

getReader in interface ServletRequest

Returns:

a BufferedReader containing the body of the request

Throws:

IOException - if an input or output exception occurred

See Also:

• ServletRequest.getInputStream()

getRemoteAddr

public String getRemoteAddr()

Description copied from interface: jakarta.servlet.ServletRequest

Returns the Internet Protocol (IP) address of the client or last proxy that sent the request. For HTTP servlets, same as the value of the CGI variable REMOTE_ADDR.

Specified by:

getRemoteAddr in interface ServletRequest

Returns:

a String containing the IP address of the client that sent the request

getRemoteHost

public String getRemoteHost()

Description copied from interface: jakarta.servlet.ServletRequest

Returns the fully qualified name of the client or the last proxy that sent the request. If the engine cannot or chooses not to resolve the hostname (to improve performance), this method returns the dotted-string form of the IP address. For HTTP servlets, same as the value of the CGI variable REMOTE_HOST.

Specified by:

getRemoteHost in interface ServletRequest

Returns:

a String containing the fully qualified name of the client

setAttribute

public void setAttribute(String name,
 Object o)

Description copied from interface: jakarta.servlet.ServletRequest

Stores an attribute in this request. Attributes are reset between requests. This method is most often used in conjunction with RequestDispatcher.

Attribute names should follow the same conventions as package names. Names beginning with jakarta.* are reserved for use by the Jakarta EE platform.

If the object passed in is null, the effect is the same as calling ServletRequest.removeAttribute(java.lang.String).
It is warned that when the request is dispatched from the servlet resides in a different web application by RequestDispatcher, the object set by this method may not be correctly retrieved in the caller servlet.

Specified by:

setAttribute in interface ServletRequest

Parameters:

name - a String specifying the name of the attribute

o - the Object to be stored

removeAttribute

public void removeAttribute(String name)

Description copied from interface: jakarta.servlet.ServletRequest

Removes an attribute from this request. This method is not generally needed as attributes only persist as long as the request is being handled.

Attribute names should follow the same conventions as package names. Names beginning with jakarta.* are reserved for use by the Jakarta EE platform.

Specified by:

removeAttribute in interface ServletRequest

Parameters:

name - a String specifying the name of the attribute to remove

getLocale

public Locale getLocale()

Description copied from interface: jakarta.servlet.ServletRequest

Returns the preferred Locale that the client will accept content in, based on the Accept-Language header. If the client request doesn't provide an Accept-Language header, this method returns the default locale for the server.

Specified by:

getLocale in interface ServletRequest

Returns:

the preferred Locale for the client

getLocales

public Enumeration<Locale> getLocales()

Description copied from interface: jakarta.servlet.ServletRequest

Returns an Enumeration of Locale objects indicating, in decreasing order starting with the preferred locale, the locales that are acceptable to the client based on the Accept-Language header. If the client request doesn't provide an Accept-Language header, this method returns an Enumeration containing one Locale, the default locale for the server.

Specified by:

getLocales in interface ServletRequest

Returns:

an Enumeration of preferred Locale objects for the client

isSecure

public boolean isSecure()

Description copied from interface: jakarta.servlet.ServletRequest

Returns a boolean indicating whether this request was made using a secure channel, such as HTTPS.

Specified by:

isSecure in interface ServletRequest

Returns:

a boolean indicating if the request was made using a secure channel

getRequestDispatcher

public RequestDispatcher getRequestDispatcher(String path)

Description copied from interface: jakarta.servlet.ServletRequest

Returns a RequestDispatcher object that acts as a wrapper for the resource located at the given path. A RequestDispatcher object can be used to forward a request to the resource or to include the resource in a response. The resource can be dynamic or static.

The pathname specified may be relative, although it cannot extend outside the current servlet context. If the path begins with a "/" it is interpreted as relative to the current context root. This method returns null if the servlet container cannot return a RequestDispatcher.

The difference between this method and ServletContext.getRequestDispatcher(java.lang.String) is that this method can take a relative path.

Specified by:

getRequestDispatcher in interface ServletRequest

Parameters:

path - a String specifying the pathname to the resource. If it is relative, it must be relative against the current servlet.

Returns:

a RequestDispatcher object that acts as a wrapper for the resource at the specified path, or null if the servlet container cannot return a RequestDispatcher

See Also:

• RequestDispatcher
• ServletContext.getRequestDispatcher(java.lang.String)

getAuthType

public String getAuthType()

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Returns the name of the authentication scheme used to protect the servlet. All servlet containers support basic, form and client certificate authentication, and may additionally support digest authentication. If the servlet is not authenticated null is returned.

Same as the value of the CGI variable AUTH_TYPE.

Specified by:

getAuthType in interface HttpServletRequest

Returns:

one of the static members BASIC_AUTH, FORM_AUTH, CLIENT_CERT_AUTH, DIGEST_AUTH (suitable for == comparison) or the container-specific string indicating the authentication scheme, or null if the request was not authenticated.

getCookies

public Cookie[] getCookies()

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Returns an array containing all of the Cookie objects the client sent with this request. This method returns null if no cookies were sent.

Specified by:

getCookies in interface HttpServletRequest

Returns:

an array of all the Cookies included with this request, or null if the request has no cookies

getDateHeader

public long getDateHeader(String name)

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Returns the value of the specified request header as a long value that represents a Date object. Use this method with headers that contain dates, such as If-Modified-Since.

The date is returned as the number of milliseconds since January 1, 1970 GMT. The header name is case insensitive.

If the request did not have a header of the specified name, this method returns -1. If the header can't be converted to a date, the method throws an IllegalArgumentException.

Specified by:

getDateHeader in interface HttpServletRequest

Parameters:

name - a String specifying the name of the header

Returns:

a long value representing the date specified in the header expressed as the number of milliseconds since January 1, 1970 GMT, or -1 if the named header was not included with the request

getHeader

public String getHeader(String name)

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Returns the value of the specified request header as a String. If the request did not include a header of the specified name, this method returns null. If there are multiple headers with the same name, this method returns the first head in the request. The header name is case insensitive. You can use this method with any request header.

Specified by:

getHeader in interface HttpServletRequest

Parameters:

name - a String specifying the header name

Returns:

a String containing the value of the requested header, or null if the request does not have a header of that name

getHeaders

public Enumeration<String> getHeaders(String name)

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Returns all the values of the specified request header as an Enumeration of String objects.

Some headers, such as Accept-Language can be sent by clients as several headers each with a different value rather than sending the header as a comma separated list.

If the request did not include any headers of the specified name, this method returns an empty Enumeration. The header name is case insensitive. You can use this method with any request header.

Specified by:

getHeaders in interface HttpServletRequest

Parameters:

name - a String specifying the header name

Returns:

an Enumeration containing the values of the requested header. If the request does not have any headers of that name return an empty enumeration. If the container does not allow access to header information, return null

getHeaderNames

public Enumeration<String> getHeaderNames()

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Returns an enumeration of all the header names this request contains. If the request has no headers, this method returns an empty enumeration.

Some servlet containers do not allow servlets to access headers using this method, in which case this method returns null

Specified by:

getHeaderNames in interface HttpServletRequest

Returns:

an enumeration of all the header names sent with this request; if the request has no headers, an empty enumeration; if the servlet container does not allow servlets to use this method, null

getIntHeader

public int getIntHeader(String name)

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Returns the value of the specified request header as an int. If the request does not have a header of the specified name, this method returns -1. If the header cannot be converted to an integer, this method throws a NumberFormatException.

The header name is case insensitive.

Specified by:

getIntHeader in interface HttpServletRequest

Parameters:

name - a String specifying the name of a request header

Returns:

an integer expressing the value of the request header or -1 if the request doesn't have a header of this name

getHttpServletMapping

public HttpServletMapping getHttpServletMapping()

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Obtain the mapping information for this request.

Specified by:

getHttpServletMapping in interface HttpServletRequest

Returns:

the mapping information for this request

getMethod

public String getMethod()

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Returns the name of the HTTP method with which this request was made, for example, GET, POST, or PUT. Same as the value of the CGI variable REQUEST_METHOD.

Specified by:

getMethod in interface HttpServletRequest

Returns:

a String specifying the name of the method with which this request was made

getPathInfo

public String getPathInfo()

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Returns any extra path information associated with the URL the client sent when it made this request. The extra path information follows the servlet path but precedes the query string and will start with a "/" character.

This method returns null if there was no extra path information.

The URL will be canonicalized as per section 3.5 of the specification before the path information, if any, is extracted.

Specified by:

getPathInfo in interface HttpServletRequest

Returns:

a String, canonicalized by the web container, specifying extra path information that comes after the servlet path but before the query string in the request URL; or null if the URL does not have any extra path information

getPathTranslated

public String getPathTranslated()

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Returns any extra path information after the servlet name but before the query string, and translates it to a real path. Same as the value of the CGI variable PATH_TRANSLATED.

If the URL does not have any extra path information, this method returns null or the servlet container cannot translate the virtual path to a real path for any reason (such as when the web application is executed from an archive). The web container does not decode this string.

Specified by:

getPathTranslated in interface HttpServletRequest

Returns:

a String specifying the real path, or null if the URL does not have any extra path information

getContextPath

public String getContextPath()

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Returns the portion of the request URI that indicates the context of the request. The context path always comes first in a request URI. The path starts with a "/" character but does not end with a "/" character. For servlets in the default (root) context, this method returns "". The container does not decode this string.

Specified by:

getContextPath in interface HttpServletRequest

Returns:

a String specifying the portion of the request URI that indicates the context of the request

getQueryString

public String getQueryString()

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Returns the query string that is contained in the request URL after the path. This method returns null if the URL does not have a query string. Same as the value of the CGI variable QUERY_STRING.

Specified by:

getQueryString in interface HttpServletRequest

Returns:

a String containing the query string or null if the URL contains no query string. The value is not decoded by the container.

getRemoteUser

public String getRemoteUser()

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Returns the login of the user making this request, if the user has been authenticated, or null if the user has not been authenticated. Whether the user name is sent with each subsequent request depends on the browser and type of authentication. Same as the value of the CGI variable REMOTE_USER.

Specified by:

getRemoteUser in interface HttpServletRequest

Returns:

a String specifying the login of the user making this request, or null if the user login is not known

isUserInRole

public boolean isUserInRole(String role)

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Returns a boolean indicating whether the authenticated user is included in the specified logical "role". Roles and role membership can be defined using deployment descriptors. If the user has not been authenticated, the method returns false.

Specified by:

isUserInRole in interface HttpServletRequest

Parameters:

role - a String specifying the name of the role

Returns:

a boolean indicating whether the user making this request belongs to a given role; false if the user has not been authenticated

getUserPrincipal

public Principal getUserPrincipal()

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Returns a java.security.Principal object containing the name of the current authenticated user. If the user has not been authenticated, the method returns null.

Specified by:

getUserPrincipal in interface HttpServletRequest

Returns:

a java.security.Principal containing the name of the user making this request; null if the user has not been authenticated

getRequestedSessionId

public String getRequestedSessionId()

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Returns the session ID specified by the client. This may not be the same as the ID of the current valid session for this request. If the client did not specify a session ID, this method returns null.

Specified by:

getRequestedSessionId in interface HttpServletRequest

Returns:

a String specifying the session ID, or null if the request did not specify a session ID

See Also:

• HttpServletRequest.isRequestedSessionIdValid()

getRequestURI

public String getRequestURI()

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Returns the part of this request's URL from the protocol name up to the query string in the first line of the HTTP request. The web container does not decode this String. For example:

Examples of Returned Values

First line of HTTP request	Returned Value
POST /some/path.html HTTP/1.1		/some/path.html
GET http://foo.bar/a.html HTTP/1.0		/a.html
HEAD /xyz?a=b HTTP/1.1		/xyz

To reconstruct a URL with a scheme and host, use HttpServletRequest.getRequestURL().

Specified by:

getRequestURI in interface HttpServletRequest

Returns:

a String containing the part of the URL from the protocol name up to the query string

See Also:

• HttpServletRequest.getRequestURL()

getRequestURL

public StringBuffer getRequestURL()

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Reconstructs the URL the client used to make the request. The returned URL contains a protocol, server name, port number, and server path, but it does not include query string parameters.

Because this method returns a StringBuffer, not a string, you can modify the URL easily, for example, to append query parameters.

This method is useful for creating redirect messages and for reporting errors.

Specified by:

getRequestURL in interface HttpServletRequest

Returns:

a StringBuffer object containing the reconstructed URL

getServletPath

public String getServletPath()

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Returns the part of this request's URL that calls the servlet. This path starts with a "/" character and includes either the servlet name or a path to the servlet, but does not include any extra path information or a query string. Same as the value of the CGI variable SCRIPT_NAME.

The URL will be canonicalized as per section 3.5 of the specification before the path information, if any, is extracted.

This method will return an empty string ("") if the servlet used to process this request was matched using the "/*" pattern.

Specified by:

getServletPath in interface HttpServletRequest

Returns:

a String, canonicalized by the web container, containing the name or path of the servlet being called, as specified in the request URL, or an empty string if the servlet used to process the request is matched using the "/*" pattern.

getSession

public HttpSession getSession(boolean create)

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Returns the current HttpSession associated with this request or, if there is no current session and create is true, returns a new session.

If create is false and the request has no valid HttpSession, this method returns null.

To make sure the session is properly maintained, you must call this method before the response is committed. If the container is using cookies to maintain session integrity and is asked to create a new session when the response is committed, an IllegalStateException is thrown.

Specified by:

getSession in interface HttpServletRequest

Parameters:

create - true to create a new session for this request if necessary; false to return null if there's no current session

Returns:

the HttpSession associated with this request or null if create is false and the request has no valid session

See Also:

• HttpServletRequest.getSession()

getSession

public HttpSession getSession()

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Returns the current session associated with this request, or if the request does not have a session, creates one.

Specified by:

getSession in interface HttpServletRequest

Returns:

the HttpSession associated with this request

See Also:

• HttpServletRequest.getSession(boolean)

changeSessionId

public String changeSessionId()

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Changes the session ID of the session associated with this request. This method does not create a new session object it only changes the ID of the current session.

Specified by:

changeSessionId in interface HttpServletRequest

Returns:

the new session ID allocated to the session

See Also:

• HttpSessionIdListener

isRequestedSessionIdValid

public boolean isRequestedSessionIdValid()

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Checks whether the requested session ID is still valid.

Specified by:

isRequestedSessionIdValid in interface HttpServletRequest

Returns:

true if this request has an id for a valid session in the current session context; false otherwise

See Also:

• HttpServletRequest.getRequestedSessionId()
• HttpServletRequest.getSession(boolean)

isRequestedSessionIdFromCookie

public boolean isRequestedSessionIdFromCookie()

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Checks whether the requested session ID came in as a cookie.

Specified by:

isRequestedSessionIdFromCookie in interface HttpServletRequest

Returns:

true if the session ID came in as a cookie; otherwise, false

See Also:

• HttpServletRequest.getSession(boolean)

isRequestedSessionIdFromURL

public boolean isRequestedSessionIdFromURL()

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Checks whether the requested session ID came in as part of the request URL.

Specified by:

isRequestedSessionIdFromURL in interface HttpServletRequest

Returns:

true if the session ID came in as part of a URL; otherwise, false

See Also:

• HttpServletRequest.getSession(boolean)

getLocalAddr

public String getLocalAddr()

Description copied from interface: jakarta.servlet.ServletRequest

Returns the Internet Protocol (IP) address of the interface on which the request was received.

Specified by:

getLocalAddr in interface ServletRequest

Returns:

a String containing the IP address on which the request was received.

getLocalName

public String getLocalName()

Description copied from interface: jakarta.servlet.ServletRequest

Returns the host name of the Internet Protocol (IP) interface on which the request was received.

Specified by:

getLocalName in interface ServletRequest

Returns:

a String containing the host name of the IP on which the request was received.

getLocalPort

public int getLocalPort()

Description copied from interface: jakarta.servlet.ServletRequest

Returns the Internet Protocol (IP) port number of the interface on which the request was received.

Specified by:

getLocalPort in interface ServletRequest

Returns:

an integer specifying the port number

getRemotePort

public int getRemotePort()

Description copied from interface: jakarta.servlet.ServletRequest

Returns the Internet Protocol (IP) source port of the client or last proxy that sent the request.

Specified by:

getRemotePort in interface ServletRequest

Returns:

an integer specifying the port number

getServletContext

public ServletContext getServletContext()

Specified by:

getServletContext in interface ServletRequest

Returns:

TODO

startAsync

public AsyncContext startAsync()
                        throws IllegalStateException

Specified by:

startAsync in interface ServletRequest

Returns:

TODO

Throws:

IllegalStateException - If async is not supported for this request

startAsync

public AsyncContext startAsync(ServletRequest request,
 ServletResponse response)
                        throws IllegalStateException

Specified by:

startAsync in interface ServletRequest

Parameters:

request - The ServletRequest with which to initialise the asynchronous context

response - The ServletResponse with which to initialise the asynchronous context

Returns:

TODO

Throws:

IllegalStateException - If async is not supported for this request

isAsyncStarted

public boolean isAsyncStarted()

Specified by:

isAsyncStarted in interface ServletRequest

Returns:

TODO

isAsyncSupported

public boolean isAsyncSupported()

Specified by:

isAsyncSupported in interface ServletRequest

Returns:

TODO

getAsyncContext

public AsyncContext getAsyncContext()

Description copied from interface: jakarta.servlet.ServletRequest

Get the current AsyncContext.

Specified by:

getAsyncContext in interface ServletRequest

Returns:

The current AsyncContext

getDispatcherType

public DispatcherType getDispatcherType()

Specified by:

getDispatcherType in interface ServletRequest

Returns:

TODO

authenticate

public boolean authenticate(HttpServletResponse response)
                     throws IOException,
ServletException

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Triggers the same authentication process as would be triggered if the request is for a resource that is protected by a security constraint.

Specified by:

authenticate in interface HttpServletRequest

Parameters:

response - The response to use to return any authentication challenge

Returns:

true if the user is successfully authenticated and false if not

Throws:

IOException - if the authentication process attempted to read from the request or write to the response and an I/O error occurred

ServletException - if the authentication failed and the caller is expected to handle the failure

login

public void login(String username,
 String password)
           throws ServletException

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Authenticate the provided user name and password and then associated the authenticated user with the request.

Specified by:

login in interface HttpServletRequest

Parameters:

username - The user name to authenticate

password - The password to use to authenticate the user

Throws:

ServletException - If any of HttpServletRequest.getRemoteUser(), HttpServletRequest.getUserPrincipal() or HttpServletRequest.getAuthType() are non-null, if the configured authenticator does not support user name and password authentication or if the authentication fails

logout

public void logout()
            throws ServletException

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Removes any authenticated user from the request.

Specified by:

logout in interface HttpServletRequest

Throws:

ServletException - If the logout fails

getParts

public Collection<Part> getParts()
                          throws IllegalStateException,
IOException,
ServletException

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Return a collection of all uploaded Parts.

Specified by:

getParts in interface HttpServletRequest

Returns:

A collection of all uploaded Parts.

Throws:

IllegalStateException - if size limits are exceeded or no multipart configuration is provided

IOException - if an I/O error occurs

ServletException - if the request is not multipart/form-data

getPart

public Part getPart(String name)
             throws IllegalStateException,
IOException,
ServletException

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Gets the named Part or null if the Part does not exist. Triggers upload of all Parts.

Specified by:

getPart in interface HttpServletRequest

Parameters:

name - The name of the Part to obtain

Returns:

The named Part or null if the Part does not exist

Throws:

IllegalStateException - if size limits are exceeded

IOException - if an I/O error occurs

ServletException - if the request is not multipart/form-data

getAllowTrace

public boolean getAllowTrace()

getContentLengthLong

public long getContentLengthLong()

Description copied from interface: jakarta.servlet.ServletRequest

Returns the length, in bytes, of the request body and made available by the input stream, or -1 if the length is not known. For HTTP servlets, same as the value of the CGI variable CONTENT_LENGTH.

Specified by:

getContentLengthLong in interface ServletRequest

Returns:

a long integer containing the length of the request body or -1 if the length is not known

upgrade

public <T extends HttpUpgradeHandler> T upgrade(Class<T> httpUpgradeHandlerClass)
                                         throws IOException,
ServletException

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Start the HTTP upgrade process and create and instance of the provided protocol handler class. The connection will be passed this instance once the current request/response pair has completed processing. Calling this method sets the response status to HttpServletResponse.SC_SWITCHING_PROTOCOLS.

Specified by:

upgrade in interface HttpServletRequest

Type Parameters:

T - The type of the upgrade handler

Parameters:

httpUpgradeHandlerClass - The class that implements the upgrade handler

Returns:

A newly created instance of the specified upgrade handler type

Throws:

IOException - if an I/O error occurred during the upgrade

ServletException - if the given httpUpgradeHandlerClass fails to be instantiated

isTrailerFieldsReady

public boolean isTrailerFieldsReady()

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Are trailer fields ready to be read (there may still be no trailers to read). This method always returns true if the underlying protocol does not support trailer fields. Otherwise, true is returned once all of the following are true:

• The application has ready all the request data and an EOF has been received or the content-length is zero
• All trailer fields, if any, have been received

Specified by:

isTrailerFieldsReady in interface HttpServletRequest

Returns:

true if trailers are ready to be read

getTrailerFields

public Map<String,String> getTrailerFields()

Description copied from interface: jakarta.servlet.http.HttpServletRequest

Obtain a Map of the trailer fields that is not backed by the request object.

Specified by:

getTrailerFields in interface HttpServletRequest

Returns:

A Map of the received trailer fields with all keys lower case or an empty Map if no trailers are present

getRequestId

public String getRequestId()

Description copied from interface: jakarta.servlet.ServletRequest

Obtain a unique (within the lifetime of the Servlet container) identifier string for this request.

There is no defined format for this string. The format is implementation dependent.

Specified by:

getRequestId in interface ServletRequest

Returns:

A unique identifier for the request

getProtocolRequestId

public String getProtocolRequestId()

Description copied from interface: jakarta.servlet.ServletRequest

Obtain the request identifier for this request as defined by the protocol in use. Note that some protocols do not define such an identifier.

Examples of protocol provided request identifiers include:

HTTP 1.x

None, so the empty string should be returned

HTTP 2

The stream identifier

HTTP 3

The stream identifier

AJP

None, so the empty string should be returned

Specified by:

getProtocolRequestId in interface ServletRequest

Returns:

The request identifier if one is defined, otherwise an empty string

getServletConnection

public ServletConnection getServletConnection()

Description copied from interface: jakarta.servlet.ServletRequest

Obtain details of the network connection to the Servlet container that is being used by this request. The information presented may differ from information presented elsewhere in the Servlet API as raw information is presented without adjustments for, example, use of reverse proxies that may be applied elsewhere in the Servlet API.

Specified by:

getServletConnection in interface ServletRequest

Returns:

The network connection details.