- java.lang.Object
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- javax.servlet.ServletRequestWrapper
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- javax.servlet.http.HttpServletRequestWrapper
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- All Implemented Interfaces:
- HttpServletRequest, ServletRequest
public class HttpServletRequestWrapper extends ServletRequestWrapper implements HttpServletRequest
Provides a convenient implementation of the HttpServletRequest interface that can be subclassed by developers wishing to adapt the request to a Servlet.This class implements the Wrapper or Decorator pattern. Methods default to calling through to the wrapped request object.
- Since:
- Servlet 2.3
- See Also:
HttpServletRequest
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Field Summary
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Fields inherited from interface javax.servlet.http.HttpServletRequest
BASIC_AUTH, CLIENT_CERT_AUTH, DIGEST_AUTH, FORM_AUTH
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Constructor Summary
Constructors Constructor and Description HttpServletRequestWrapper(HttpServletRequest request)Constructs a request object wrapping the given request.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method and Description booleanauthenticate(HttpServletResponse response)The default behavior of this method is to call authenticate on the wrapped request object.StringchangeSessionId()The default behavior of this method is to return changeSessionId() on the wrapped request object.StringgetAuthType()The default behavior of this method is to return getAuthType() on the wrapped request object.StringgetContextPath()The default behavior of this method is to return getContextPath() on the wrapped request object.Cookie[]getCookies()The default behavior of this method is to return getCookies() on the wrapped request object.longgetDateHeader(String name)The default behavior of this method is to return getDateHeader(String name) on the wrapped request object.StringgetHeader(String name)The default behavior of this method is to return getHeader(String name) on the wrapped request object.Enumeration<String>getHeaderNames()The default behavior of this method is to return getHeaderNames() on the wrapped request object.Enumeration<String>getHeaders(String name)The default behavior of this method is to return getHeaders(String name) on the wrapped request object.intgetIntHeader(String name)The default behavior of this method is to return getIntHeader(String name) on the wrapped request object.StringgetMethod()The default behavior of this method is to return getMethod() on the wrapped request object.PartgetPart(String name)The default behavior of this method is to call getPart on the wrapped request object.Collection<Part>getParts()The default behavior of this method is to call getParts on the wrapped request object.StringgetPathInfo()The default behavior of this method is to return getPathInfo() on the wrapped request object.StringgetPathTranslated()The default behavior of this method is to return getPathTranslated() on the wrapped request object.StringgetQueryString()The default behavior of this method is to return getQueryString() on the wrapped request object.StringgetRemoteUser()The default behavior of this method is to return getRemoteUser() on the wrapped request object.StringgetRequestedSessionId()The default behavior of this method is to return getRequestedSessionId() on the wrapped request object.StringgetRequestURI()The default behavior of this method is to return getRequestURI() on the wrapped request object.StringBuffergetRequestURL()The default behavior of this method is to return getRequestURL() on the wrapped request object.StringgetServletPath()The default behavior of this method is to return getServletPath() on the wrapped request object.HttpSessiongetSession()The default behavior of this method is to return getSession() on the wrapped request object.HttpSessiongetSession(boolean create)The default behavior of this method is to return getSession(boolean create) on the wrapped request object.PrincipalgetUserPrincipal()The default behavior of this method is to return getUserPrincipal() on the wrapped request object.booleanisRequestedSessionIdFromCookie()The default behavior of this method is to return isRequestedSessionIdFromCookie() on the wrapped request object.booleanisRequestedSessionIdFromUrl()The default behavior of this method is to return isRequestedSessionIdFromUrl() on the wrapped request object.booleanisRequestedSessionIdFromURL()The default behavior of this method is to return isRequestedSessionIdFromURL() on the wrapped request object.booleanisRequestedSessionIdValid()The default behavior of this method is to return isRequestedSessionIdValid() on the wrapped request object.booleanisUserInRole(String role)The default behavior of this method is to return isUserInRole(String role) on the wrapped request object.voidlogin(String username, String password)The default behavior of this method is to call login on the wrapped request object.voidlogout()The default behavior of this method is to call login on the wrapped request object.<T extends HttpUpgradeHandler>
Tupgrade(Class<T> handlerClass)Create an instance ofHttpUpgradeHandlerfor an given class and uses it for the http protocol upgrade processing.-
Methods inherited from class javax.servlet.ServletRequestWrapper
getAsyncContext, getAttribute, getAttributeNames, getCharacterEncoding, getContentLength, getContentLengthLong, getContentType, getDispatcherType, getInputStream, getLocalAddr, getLocale, getLocales, getLocalName, getLocalPort, getParameter, getParameterMap, getParameterNames, getParameterValues, getProtocol, getReader, getRealPath, getRemoteAddr, getRemoteHost, getRemotePort, getRequest, getRequestDispatcher, getScheme, getServerName, getServerPort, getServletContext, isAsyncStarted, isAsyncSupported, isSecure, isWrapperFor, isWrapperFor, removeAttribute, setAttribute, setCharacterEncoding, setRequest, startAsync, startAsync
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface javax.servlet.ServletRequest
getAsyncContext, getAttribute, getAttributeNames, getCharacterEncoding, getContentLength, getContentLengthLong, getContentType, getDispatcherType, getInputStream, getLocalAddr, getLocale, getLocales, getLocalName, getLocalPort, getParameter, getParameterMap, getParameterNames, getParameterValues, getProtocol, getReader, getRealPath, getRemoteAddr, getRemoteHost, getRemotePort, getRequestDispatcher, getScheme, getServerName, getServerPort, getServletContext, isAsyncStarted, isAsyncSupported, isSecure, removeAttribute, setAttribute, setCharacterEncoding, startAsync, startAsync
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Constructor Detail
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HttpServletRequestWrapper
public HttpServletRequestWrapper(HttpServletRequest request)
Constructs a request object wrapping the given request.- Throws:
IllegalArgumentException- if the request is null
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Method Detail
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getAuthType
public String getAuthType()
The default behavior of this method is to return getAuthType() on the wrapped request object.- Specified by:
getAuthTypein interfaceHttpServletRequest- 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
nullif the request was not authenticated.
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getCookies
public Cookie[] getCookies()
The default behavior of this method is to return getCookies() on the wrapped request object.- Specified by:
getCookiesin interfaceHttpServletRequest- Returns:
- an array of all the
Cookiesincluded with this request, ornullif the request has no cookies
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getDateHeader
public long getDateHeader(String name)
The default behavior of this method is to return getDateHeader(String name) on the wrapped request object.- Specified by:
getDateHeaderin interfaceHttpServletRequest- Parameters:
name- aStringspecifying the name of the header- Returns:
- a
longvalue 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
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getHeader
public String getHeader(String name)
The default behavior of this method is to return getHeader(String name) on the wrapped request object.- Specified by:
getHeaderin interfaceHttpServletRequest- Parameters:
name- aStringspecifying the header name- Returns:
- a
Stringcontaining the value of the requested header, ornullif the request does not have a header of that name
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getHeaders
public Enumeration<String> getHeaders(String name)
The default behavior of this method is to return getHeaders(String name) on the wrapped request object.- Specified by:
getHeadersin interfaceHttpServletRequest- Parameters:
name- aStringspecifying the header name- Returns:
- an
Enumerationcontaining 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
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getHeaderNames
public Enumeration<String> getHeaderNames()
The default behavior of this method is to return getHeaderNames() on the wrapped request object.- Specified by:
getHeaderNamesin interfaceHttpServletRequest- 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
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getIntHeader
public int getIntHeader(String name)
The default behavior of this method is to return getIntHeader(String name) on the wrapped request object.- Specified by:
getIntHeaderin interfaceHttpServletRequest- Parameters:
name- aStringspecifying 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
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getMethod
public String getMethod()
The default behavior of this method is to return getMethod() on the wrapped request object.- Specified by:
getMethodin interfaceHttpServletRequest- Returns:
- a
Stringspecifying the name of the method with which this request was made
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getPathInfo
public String getPathInfo()
The default behavior of this method is to return getPathInfo() on the wrapped request object.- Specified by:
getPathInfoin interfaceHttpServletRequest- Returns:
- a
String, decoded by the web container, specifying extra path information that comes after the servlet path but before the query string in the request URL; ornullif the URL does not have any extra path information
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getPathTranslated
public String getPathTranslated()
The default behavior of this method is to return getPathTranslated() on the wrapped request object.- Specified by:
getPathTranslatedin interfaceHttpServletRequest- Returns:
- a
Stringspecifying the real path, ornullif the URL does not have any extra path information
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getContextPath
public String getContextPath()
The default behavior of this method is to return getContextPath() on the wrapped request object.- Specified by:
getContextPathin interfaceHttpServletRequest- Returns:
- a
Stringspecifying the portion of the request URI that indicates the context of the request - See Also:
ServletContext.getContextPath()
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getQueryString
public String getQueryString()
The default behavior of this method is to return getQueryString() on the wrapped request object.- Specified by:
getQueryStringin interfaceHttpServletRequest- Returns:
- a
Stringcontaining the query string ornullif the URL contains no query string. The value is not decoded by the container.
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getRemoteUser
public String getRemoteUser()
The default behavior of this method is to return getRemoteUser() on the wrapped request object.- Specified by:
getRemoteUserin interfaceHttpServletRequest- Returns:
- a
Stringspecifying the login of the user making this request, ornullif the user login is not known
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isUserInRole
public boolean isUserInRole(String role)
The default behavior of this method is to return isUserInRole(String role) on the wrapped request object.- Specified by:
isUserInRolein interfaceHttpServletRequest- Parameters:
role- aStringspecifying the name of the role- Returns:
- a
booleanindicating whether the user making this request belongs to a given role;falseif the user has not been authenticated
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getUserPrincipal
public Principal getUserPrincipal()
The default behavior of this method is to return getUserPrincipal() on the wrapped request object.- Specified by:
getUserPrincipalin interfaceHttpServletRequest- Returns:
- a
java.security.Principalcontaining the name of the user making this request;nullif the user has not been authenticated
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getRequestedSessionId
public String getRequestedSessionId()
The default behavior of this method is to return getRequestedSessionId() on the wrapped request object.- Specified by:
getRequestedSessionIdin interfaceHttpServletRequest- Returns:
- a
Stringspecifying the session ID, ornullif the request did not specify a session ID - See Also:
HttpServletRequest.isRequestedSessionIdValid()
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getRequestURI
public String getRequestURI()
The default behavior of this method is to return getRequestURI() on the wrapped request object.- Specified by:
getRequestURIin interfaceHttpServletRequest- Returns:
- a
Stringcontaining the part of the URL from the protocol name up to the query string - See Also:
HttpUtils.getRequestURL(javax.servlet.http.HttpServletRequest)
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getRequestURL
public StringBuffer getRequestURL()
The default behavior of this method is to return getRequestURL() on the wrapped request object.- Specified by:
getRequestURLin interfaceHttpServletRequest- Returns:
- a
StringBufferobject containing the reconstructed URL
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getServletPath
public String getServletPath()
The default behavior of this method is to return getServletPath() on the wrapped request object.- Specified by:
getServletPathin interfaceHttpServletRequest- Returns:
- a
Stringcontaining the name or path of the servlet being called, as specified in the request URL, decoded, or an empty string if the servlet used to process the request is matched using the "/*" pattern.
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getSession
public HttpSession getSession(boolean create)
The default behavior of this method is to return getSession(boolean create) on the wrapped request object.- Specified by:
getSessionin interfaceHttpServletRequest- Parameters:
create-trueto create a new session for this request if necessary;falseto returnnullif there's no current session- Returns:
- the
HttpSessionassociated with this request ornullifcreateisfalseand the request has no valid session - See Also:
HttpServletRequest.getSession()
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getSession
public HttpSession getSession()
The default behavior of this method is to return getSession() on the wrapped request object.- Specified by:
getSessionin interfaceHttpServletRequest- Returns:
- the
HttpSessionassociated with this request - See Also:
HttpServletRequest.getSession(boolean)
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changeSessionId
public String changeSessionId()
The default behavior of this method is to return changeSessionId() on the wrapped request object.- Specified by:
changeSessionIdin interfaceHttpServletRequest- Returns:
- the new session id
- Since:
- Servlet 3.1
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isRequestedSessionIdValid
public boolean isRequestedSessionIdValid()
The default behavior of this method is to return isRequestedSessionIdValid() on the wrapped request object.- Specified by:
isRequestedSessionIdValidin interfaceHttpServletRequest- Returns:
trueif this request has an id for a valid session in the current session context;falseotherwise- See Also:
HttpServletRequest.getRequestedSessionId(),HttpServletRequest.getSession(boolean),HttpSessionContext
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isRequestedSessionIdFromCookie
public boolean isRequestedSessionIdFromCookie()
The default behavior of this method is to return isRequestedSessionIdFromCookie() on the wrapped request object.- Specified by:
isRequestedSessionIdFromCookiein interfaceHttpServletRequest- Returns:
trueif the session ID came in as a cookie; otherwise,false- See Also:
HttpServletRequest.getSession(boolean)
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isRequestedSessionIdFromURL
public boolean isRequestedSessionIdFromURL()
The default behavior of this method is to return isRequestedSessionIdFromURL() on the wrapped request object.- Specified by:
isRequestedSessionIdFromURLin interfaceHttpServletRequest- Returns:
trueif the session ID came in as part of a URL; otherwise,false- See Also:
HttpServletRequest.getSession(boolean)
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isRequestedSessionIdFromUrl
public boolean isRequestedSessionIdFromUrl()
The default behavior of this method is to return isRequestedSessionIdFromUrl() on the wrapped request object.- Specified by:
isRequestedSessionIdFromUrlin interfaceHttpServletRequest
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authenticate
public boolean authenticate(HttpServletResponse response) throws IOException, ServletException
The default behavior of this method is to call authenticate on the wrapped request object.- Specified by:
authenticatein interfaceHttpServletRequest- Parameters:
response- TheHttpServletResponseassociated with thisHttpServletRequest- Returns:
truewhen non-null values were or have been established as the values returned bygetUserPrincipal,getRemoteUser, andgetAuthType. Returnfalseif authentication is incomplete and the underlying login mechanism has committed, in the response, the message (e.g., challenge) and HTTP status code to be returned to the user.- Throws:
IOException- if an input or output error occurred while reading from this request or writing to the given responseServletException- if the authentication failed and the caller is responsible for handling the error (i.e., the underlying login mechanism did NOT establish the message and HTTP status code to be returned to the user)- Since:
- Servlet 3.0
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login
public void login(String username, String password) throws ServletException
The default behavior of this method is to call login on the wrapped request object.- Specified by:
loginin interfaceHttpServletRequest- Parameters:
username- TheStringvalue corresponding to the login identifier of the user.password- The passwordStringcorresponding to the identified user.- Throws:
ServletException- if the configured login mechanism does not support username password authentication, or if a non-null caller identity had already been established (prior to the call to login), or if validation of the provided username and password fails.- Since:
- Servlet 3.0
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logout
public void logout() throws ServletExceptionThe default behavior of this method is to call login on the wrapped request object.- Specified by:
logoutin interfaceHttpServletRequest- Throws:
ServletException- if logout fails- Since:
- Servlet 3.0
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getParts
public Collection<Part> getParts() throws IOException, ServletException
The default behavior of this method is to call getParts on the wrapped request object.Any changes to the returned
Collectionmust not affect thisHttpServletRequestWrapper.- Specified by:
getPartsin interfaceHttpServletRequest- Returns:
- a (possibly empty)
Collectionof thePartcomponents of this request - Throws:
IOException- if an I/O error occurred during the retrieval of thePartcomponents of this requestServletException- if this request is not of typemultipart/form-data- Since:
- Servlet 3.0
- See Also:
MultipartConfig.maxFileSize(),MultipartConfig.maxRequestSize()
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getPart
public Part getPart(String name) throws IOException, ServletException
The default behavior of this method is to call getPart on the wrapped request object.- Specified by:
getPartin interfaceHttpServletRequest- Parameters:
name- the name of the requestedPart- Returns:
- The
Partwith the given name, ornullif this request is of typemultipart/form-data, but does not contain the requestedPart - Throws:
IOException- if an I/O error occurred during the retrieval of the requestedPartServletException- if this request is not of typemultipart/form-data- Since:
- Servlet 3.0
- See Also:
MultipartConfig.maxFileSize(),MultipartConfig.maxRequestSize()
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upgrade
public <T extends HttpUpgradeHandler> T upgrade(Class<T> handlerClass) throws IOException, ServletException
Create an instance ofHttpUpgradeHandlerfor an given class and uses it for the http protocol upgrade processing.- Specified by:
upgradein interfaceHttpServletRequest- Parameters:
handlerClass- TheHttpUpgradeHandlerclass used for the upgrade.- Returns:
- an instance of the
HttpUpgradeHandler - Throws:
IOException- if an I/O error occurred during the upgradeServletException- if the givenhandlerClassfails to be instantiated- Since:
- Servlet 3.1
- See Also:
HttpUpgradeHandler,WebConnection
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Document créé le 14/09/2006, dernière modification le 18/08/2025
Source du document imprimé : https://www.gaudry.be/java-api-javaee-rf-javax/servlet/http/HttpServletRequestWrapper.html
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