类 HandlerFunctionAdapter

构造器详细资料

• HandlerFunctionAdapter

  public HandlerFunctionAdapter()

方法详细资料

• setOrder

  public void setOrder​(int order)

  Specify the order value for this HandlerAdapter bean.

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

  另请参阅:

  Ordered.getOrder()

• getOrder

  public int getOrder()

  从接口复制的说明: 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.

  指定者:

  getOrder 在接口中 Ordered

  返回:

  the order value

  另请参阅:

  Ordered.HIGHEST_PRECEDENCE, Ordered.LOWEST_PRECEDENCE

• supports

  public boolean supports​(Object handler)

  从接口复制的说明: 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);

  指定者:

  supports 在接口中 HandlerAdapter

  参数:

  handler - the handler object to check

  返回:

  whether or not this object can use the given handler

• handle

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

  从接口复制的说明: HandlerAdapter
  Use the given handler to handle this request. The workflow that is required may vary widely.

  指定者:

  handle 在接口中 HandlerAdapter

  参数:

  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.

  返回:

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

  抛出:

  Exception - in case of errors

• getLastModified

  public long getLastModified​(HttpServletRequest request,
                              Object handler)

  从接口复制的说明: HandlerAdapter
  Same contract as for HttpServlet's getLastModified method. Can simply return -1 if there's no support in the handler class.

  指定者:

  getLastModified 在接口中 HandlerAdapter

  参数:

  request - current HTTP request

  handler - the handler to use

  返回:

  the lastModified value for the given handler

  另请参阅:

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