public class ServletWebRequest extends ServletRequestAttributes implements NativeWebRequest
WebRequest adapter for an HttpServletRequest.DESTRUCTION_CALLBACK_NAME_PREFIX, immutableValueTypesrequestDestructionCallbacksREFERENCE_REQUEST, REFERENCE_SESSION, SCOPE_REQUEST, SCOPE_SESSION| Constructor and Description |
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ServletWebRequest(HttpServletRequest request)
Create a new ServletWebRequest instance for the given request.
|
ServletWebRequest(HttpServletRequest request,
HttpServletResponse response)
Create a new ServletWebRequest instance for the given request/response pair.
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| Modifier and Type | Method and Description |
|---|---|
boolean |
checkNotModified(long lastModifiedTimestamp)
Check whether the requested resource has been modified given the
supplied last-modified timestamp (as determined by the application).
|
boolean |
checkNotModified(String etag)
Check whether the requested resource has been modified given the
supplied
ETag (entity tag), as determined by the application. |
boolean |
checkNotModified(String etag,
long lastModifiedTimestamp)
Check whether the requested resource has been modified given the
supplied
ETag (entity tag) and last-modified timestamp,
as determined by the application. |
String |
getContextPath()
Return the context path for this request
(usually the base path that the current web application is mapped to).
|
String |
getDescription(boolean includeClientInfo)
Get a short description of this request,
typically containing request URI and session id.
|
String |
getHeader(String headerName)
Return the request header of the given name, or
null if none. |
Iterator<String> |
getHeaderNames()
Return an Iterator over request header names.
|
String[] |
getHeaderValues(String headerName)
Return the request header values for the given header name,
or
null if none. |
HttpMethod |
getHttpMethod()
Return the HTTP method of the request.
|
Locale |
getLocale()
Return the primary Locale for this request.
|
Object |
getNativeRequest()
Return the underlying native request object.
|
<T> T |
getNativeRequest(Class<T> requiredType)
Return the underlying native request object, if available.
|
Object |
getNativeResponse()
Return the underlying native response object, if any.
|
<T> T |
getNativeResponse(Class<T> requiredType)
Return the underlying native response object, if available.
|
String |
getParameter(String paramName)
Return the request parameter of the given name, or
null if none. |
Map<String,String[]> |
getParameterMap()
Return an immutable Map of the request parameters, with parameter names as map keys
and parameter values as map values.
|
Iterator<String> |
getParameterNames()
Return an Iterator over request parameter names.
|
String[] |
getParameterValues(String paramName)
Return the request parameter values for the given parameter name,
or
null if none. |
String |
getRemoteUser()
Return the remote user for this request, if any.
|
Principal |
getUserPrincipal()
Return the user principal for this request, if any.
|
boolean |
isNotModified() |
boolean |
isSecure()
Return whether this request has been sent over a secure transport
mechanism (such as SSL).
|
boolean |
isUserInRole(String role)
Determine whether the user is in the given role for this request.
|
String |
toString() |
getAttribute, getAttributeNames, getRequest, getResponse, getSession, getSessionId, getSessionMutex, isImmutableSessionAttribute, registerDestructionCallback, registerSessionDestructionCallback, removeAttribute, resolveReference, setAttribute, updateAccessedSessionAttributesisRequestActive, registerRequestDestructionCallback, removeRequestDestructionCallback, requestCompletedclone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, waitgetAttribute, getAttributeNames, getSessionId, getSessionMutex, registerDestructionCallback, removeAttribute, resolveReference, setAttributepublic ServletWebRequest(HttpServletRequest request)
request - current HTTP requestpublic ServletWebRequest(HttpServletRequest request, @Nullable HttpServletResponse response)
request - current HTTP requestresponse - current HTTP response (for automatic last-modified handling)public Object getNativeRequest()
NativeWebRequestgetNativeRequest in interface NativeWebRequestHttpServletRequestpublic Object getNativeResponse()
NativeWebRequestgetNativeResponse in interface NativeWebRequestHttpServletResponsepublic <T> T getNativeRequest(@Nullable Class<T> requiredType)
NativeWebRequestgetNativeRequest in interface NativeWebRequestrequiredType - the desired type of request objectnull if none
of that type is availableHttpServletRequestpublic <T> T getNativeResponse(@Nullable Class<T> requiredType)
NativeWebRequestgetNativeResponse in interface NativeWebRequestrequiredType - the desired type of response objectnull if none
of that type is availableHttpServletResponse@Nullable public HttpMethod getHttpMethod()
@Nullable public String getHeader(String headerName)
WebRequestnull if none.
Retrieves the first header value in case of a multi-value header.
getHeader in interface WebRequestHttpServletRequest.getHeader(String)@Nullable public String[] getHeaderValues(String headerName)
WebRequestnull if none.
A single-value header will be exposed as an array with a single element.
getHeaderValues in interface WebRequestHttpServletRequest.getHeaders(String)public Iterator<String> getHeaderNames()
WebRequestgetHeaderNames in interface WebRequestHttpServletRequest.getHeaderNames()@Nullable public String getParameter(String paramName)
WebRequestnull if none.
Retrieves the first parameter value in case of a multi-value parameter.
getParameter in interface WebRequestServletRequest.getParameter(String)@Nullable public String[] getParameterValues(String paramName)
WebRequestnull if none.
A single-value parameter will be exposed as an array with a single element.
getParameterValues in interface WebRequestServletRequest.getParameterValues(String)public Iterator<String> getParameterNames()
WebRequestgetParameterNames in interface WebRequestServletRequest.getParameterNames()public Map<String,String[]> getParameterMap()
WebRequestA single-value parameter will be exposed as an array with a single element.
getParameterMap in interface WebRequestServletRequest.getParameterMap()public Locale getLocale()
WebRequestgetLocale in interface WebRequestServletRequest.getLocale()public String getContextPath()
WebRequestgetContextPath in interface WebRequestHttpServletRequest.getContextPath()@Nullable public String getRemoteUser()
WebRequestgetRemoteUser in interface WebRequestHttpServletRequest.getRemoteUser()@Nullable public Principal getUserPrincipal()
WebRequestgetUserPrincipal in interface WebRequestHttpServletRequest.getUserPrincipal()public boolean isUserInRole(String role)
WebRequestisUserInRole in interface WebRequestHttpServletRequest.isUserInRole(String)public boolean isSecure()
WebRequestisSecure in interface WebRequestServletRequest.isSecure()public boolean checkNotModified(long lastModifiedTimestamp)
WebRequestThis will also transparently set the "Last-Modified" response header and HTTP status when applicable.
Typical usage:
public String myHandleMethod(WebRequest request, Model model) {
long lastModified = // application-specific calculation
if (request.checkNotModified(lastModified)) {
// shortcut exit - no further processing necessary
return null;
}
// further request processing, actually building content
model.addAttribute(...);
return "myViewName";
}
This method works with conditional GET/HEAD requests, but also with conditional POST/PUT/DELETE requests.
Note: you can use either
this #checkNotModified(long) method; or
WebRequest.checkNotModified(String). If you want to enforce both
a strong entity tag and a Last-Modified value,
as recommended by the HTTP specification,
then you should use WebRequest.checkNotModified(String, long).
If the "If-Modified-Since" header is set but cannot be parsed to a date value, this method will ignore the header and proceed with setting the last-modified timestamp on the response.
checkNotModified in interface WebRequestlastModifiedTimestamp - the last-modified timestamp in
milliseconds that the application determined for the underlying
resourcepublic boolean checkNotModified(String etag)
WebRequestETag (entity tag), as determined by the application.
This will also transparently set the "ETag" response header and HTTP status when applicable.
Typical usage:
public String myHandleMethod(WebRequest request, Model model) {
String eTag = // application-specific calculation
if (request.checkNotModified(eTag)) {
// shortcut exit - no further processing necessary
return null;
}
// further request processing, actually building content
model.addAttribute(...);
return "myViewName";
}
Note: you can use either
this #checkNotModified(String) method; or
WebRequest.checkNotModified(long). If you want to enforce both
a strong entity tag and a Last-Modified value,
as recommended by the HTTP specification,
then you should use WebRequest.checkNotModified(String, long).
checkNotModified in interface WebRequestetag - the entity tag that the application determined
for the underlying resource. This parameter will be padded
with quotes (") if necessary.public boolean checkNotModified(@Nullable String etag, long lastModifiedTimestamp)
WebRequestETag (entity tag) and last-modified timestamp,
as determined by the application.
This will also transparently set the "ETag" and "Last-Modified" response headers, and HTTP status when applicable.
Typical usage:
public String myHandleMethod(WebRequest request, Model model) {
String eTag = // application-specific calculation
long lastModified = // application-specific calculation
if (request.checkNotModified(eTag, lastModified)) {
// shortcut exit - no further processing necessary
return null;
}
// further request processing, actually building content
model.addAttribute(...);
return "myViewName";
}
This method works with conditional GET/HEAD requests, but also with conditional POST/PUT/DELETE requests.
Note: The HTTP specification recommends
setting both ETag and Last-Modified values, but you can also
use #checkNotModified(String) or
WebRequest.checkNotModified(long).
checkNotModified in interface WebRequestetag - the entity tag that the application determined
for the underlying resource. This parameter will be padded
with quotes (") if necessary.lastModifiedTimestamp - the last-modified timestamp in
milliseconds that the application determined for the underlying
resourcepublic boolean isNotModified()
public String getDescription(boolean includeClientInfo)
WebRequestgetDescription in interface WebRequestincludeClientInfo - whether to include client-specific
information such as session id and user namepublic String toString()
toString in class ServletRequestAttributes