类 RequestContextUtils

字段详细资料

• REQUEST_DATA_VALUE_PROCESSOR_BEAN_NAME

  public static final String REQUEST_DATA_VALUE_PROCESSOR_BEAN_NAME

  The name of the bean to use to look up in an implementation of RequestDataValueProcessor has been configured.

  从以下版本开始:

  4.2.1

  另请参阅:

  常量字段值

构造器详细资料

• RequestContextUtils

  public RequestContextUtils()

方法详细资料

• getWebApplicationContext

  @Deprecated
  public static WebApplicationContext getWebApplicationContext​(ServletRequest request)
                                                        throws IllegalStateException

  已过时。

  as of Spring 4.2.1, in favor of findWebApplicationContext(HttpServletRequest)
  Look for the WebApplicationContext associated with the DispatcherServlet that has initiated request processing.

  参数:

  request - current HTTP request

  返回:

  the request-specific web application context

  抛出:

  IllegalStateException - if no servlet-specific context has been found

  另请参阅:

  getWebApplicationContext(ServletRequest, ServletContext)

• getWebApplicationContext

  @Deprecated
  public static WebApplicationContext getWebApplicationContext​(ServletRequest request,
                                                               ServletContext servletContext)
                                                        throws IllegalStateException

  已过时。

  as of Spring 4.2.1, in favor of findWebApplicationContext(HttpServletRequest, ServletContext)
  Look for the WebApplicationContext associated with the DispatcherServlet that has initiated request processing, and for the global context if none was found associated with the current request. This method is useful to allow components outside the framework, such as JSP tag handlers, to access the most specific application context available.

  参数:

  request - current HTTP request

  servletContext - current servlet context

  返回:

  the request-specific WebApplicationContext, or the global one if no request-specific context has been found

  抛出:

  IllegalStateException - if neither a servlet-specific nor a global context has been found

  另请参阅:

  DispatcherServlet.WEB_APPLICATION_CONTEXT_ATTRIBUTE, WebApplicationContextUtils.getRequiredWebApplicationContext(ServletContext)

• findWebApplicationContext

  public static WebApplicationContext findWebApplicationContext​(HttpServletRequest request,
                                                                ServletContext servletContext)

  Look for the WebApplicationContext associated with the DispatcherServlet that has initiated request processing, and for the global context if none was found associated with the current request. The global context will be found via the ServletContext or via ContextLoader's current context.

  NOTE: This variant remains compatible with Servlet 2.5, explicitly checking a given ServletContext instead of deriving it from the request.

  参数:

  request - current HTTP request

  servletContext - current servlet context

  返回:

  the request-specific WebApplicationContext, or the global one if no request-specific context has been found, or null if none

  从以下版本开始:

  4.2.1

  另请参阅:

  DispatcherServlet.WEB_APPLICATION_CONTEXT_ATTRIBUTE, WebApplicationContextUtils.getWebApplicationContext(ServletContext), ContextLoader.getCurrentWebApplicationContext()

• findWebApplicationContext

  public static WebApplicationContext findWebApplicationContext​(HttpServletRequest request)

  Look for the WebApplicationContext associated with the DispatcherServlet that has initiated request processing, and for the global context if none was found associated with the current request. The global context will be found via the ServletContext or via ContextLoader's current context.

  NOTE: This variant requires Servlet 3.0+ and is generally recommended for forward-looking custom user code.

  参数:

  request - current HTTP request

  返回:

  the request-specific WebApplicationContext, or the global one if no request-specific context has been found, or null if none

  从以下版本开始:

  4.2.1

  另请参阅:

  findWebApplicationContext(HttpServletRequest, ServletContext), ServletRequest.getServletContext(), ContextLoader.getCurrentWebApplicationContext()

• getLocaleResolver

  public static LocaleResolver getLocaleResolver​(HttpServletRequest request)

  Return the LocaleResolver that has been bound to the request by the DispatcherServlet.

  参数:

  request - current HTTP request

  返回:

  the current LocaleResolver, or null if not found

• getLocale

  public static Locale getLocale​(HttpServletRequest request)

  Retrieve the current locale from the given request, using the LocaleResolver bound to the request by the DispatcherServlet (if available), falling back to the request's accept-header Locale.

  This method serves as a straightforward alternative to the standard Servlet ServletRequest.getLocale() method, falling back to the latter if no more specific locale has been found.

  Consider using LocaleContextHolder.getLocale() which will normally be populated with the same Locale.

  参数:

  request - current HTTP request

  返回:

  the current locale for the given request, either from the LocaleResolver or from the plain request itself

  另请参阅:

  getLocaleResolver(javax.servlet.http.HttpServletRequest), LocaleContextHolder.getLocale()

• getTimeZone

  public static TimeZone getTimeZone​(HttpServletRequest request)

  Retrieve the current time zone from the given request, using the TimeZoneAwareLocaleResolver bound to the request by the DispatcherServlet (if available), falling back to the system's default time zone.

  Note: This method returns null if no specific time zone can be resolved for the given request. This is in contrast to getLocale(javax.servlet.http.HttpServletRequest) where there is always the request's accept-header locale to fall back to.

  Consider using LocaleContextHolder.getTimeZone() which will normally be populated with the same TimeZone: That method only differs in terms of its fallback to the system time zone if the LocaleResolver hasn't provided a specific time zone (instead of this method's null).

  参数:

  request - current HTTP request

  返回:

  the current time zone for the given request, either from the TimeZoneAwareLocaleResolver or null if none associated

  另请参阅:

  getLocaleResolver(javax.servlet.http.HttpServletRequest), LocaleContextHolder.getTimeZone()

• getThemeResolver

  public static ThemeResolver getThemeResolver​(HttpServletRequest request)

  Return the ThemeResolver that has been bound to the request by the DispatcherServlet.

  参数:

  request - current HTTP request

  返回:

  the current ThemeResolver, or null if not found

• getThemeSource

  public static ThemeSource getThemeSource​(HttpServletRequest request)

  Return the ThemeSource that has been bound to the request by the DispatcherServlet.

  参数:

  request - current HTTP request

  返回:

  the current ThemeSource

• getTheme

  public static Theme getTheme​(HttpServletRequest request)

  Retrieves the current theme from the given request, using the ThemeResolver and ThemeSource bound to the request by the DispatcherServlet.

  参数:

  request - current HTTP request

  返回:

  the current theme, or null if not found

  另请参阅:

  getThemeResolver(javax.servlet.http.HttpServletRequest)

• getInputFlashMap

  public static Map<String,​?> getInputFlashMap​(HttpServletRequest request)

  Return read-only "input" flash attributes from request before redirect.

  参数:

  request - current request

  返回:

  a read-only Map, or null if not found

  另请参阅:

  FlashMap

• getOutputFlashMap

  public static FlashMap getOutputFlashMap​(HttpServletRequest request)

  Return "output" FlashMap to save attributes for request after redirect.

  参数:

  request - current request

  返回:

  a FlashMap instance, never null within a DispatcherServlet-handled request

• getFlashMapManager

  public static FlashMapManager getFlashMapManager​(HttpServletRequest request)

  Return the FlashMapManager instance to save flash attributes.

  参数:

  request - the current request

  返回:

  a FlashMapManager instance, never null within a DispatcherServlet-handled request