Class HandlerFunctionAdapter

Constructor Detail

• HandlerFunctionAdapter

  public HandlerFunctionAdapter()

Method Detail

• setOrder

  public void setOrder​(int order)

  Specify the order value for this HandlerAdapter bean.

  The default value is Ordered.LOWEST_PRECEDENCE, meaning non-ordered.

  See Also:

  Ordered.getOrder()

• getOrder

  public int getOrder()

  Description copied from interface: Ordered
  Get the order value of this object.

  Higher values are interpreted as lower priority. As a consequence, the object with the lowest value has the highest priority (somewhat analogous to Servlet load-on-startup values).

  Same order values will result in arbitrary sort positions for the affected objects.

  Specified by:

  getOrder in interface Ordered

  Returns:

  the order value

  See Also:

  Ordered.HIGHEST_PRECEDENCE, Ordered.LOWEST_PRECEDENCE

• supports

  public boolean supports​(Object handler)

  Description copied from interface: HandlerAdapter
  Given a handler instance, return whether or not this HandlerAdapter can support it. Typical HandlerAdapters will base the decision on the handler type. HandlerAdapters will usually only support one handler type each.

  A typical implementation:

  return (handler instanceof MyHandler);

  Specified by:

  supports in interface HandlerAdapter

  Parameters:

  handler - the handler object to check

  Returns:

  whether or not this object can use the given handler

• handle

  @Nullable
  public ModelAndView handle​(HttpServletRequest servletRequest,
                             HttpServletResponse servletResponse,
                             Object handler)
                      throws Exception

  Description copied from interface: HandlerAdapter
  Use the given handler to handle this request. The workflow that is required may vary widely.

  Specified by:

  handle in interface HandlerAdapter

  Parameters:

  servletRequest - current HTTP request

  servletResponse - current HTTP response

  handler - the handler to use. This object must have previously been passed to the supports method of this interface, which must have returned true.

  Returns:

  a ModelAndView object with the name of the view and the required model data, or null if the request has been handled directly

  Throws:

  Exception - in case of errors

• getLastModified

  public long getLastModified​(HttpServletRequest request,
                              Object handler)

  Description copied from interface: HandlerAdapter
  Same contract as for HttpServlet's getLastModified method. Can simply return -1 if there's no support in the handler class.

  Specified by:

  getLastModified in interface HandlerAdapter

  Parameters:

  request - current HTTP request

  handler - the handler to use

  Returns:

  the lastModified value for the given handler

  See Also:

  HttpServlet.getLastModified(javax.servlet.http.HttpServletRequest), LastModified.getLastModified(javax.servlet.http.HttpServletRequest)