com.vaadin.flow.server.RequestHandler API 24.7.0.alpha6

com.vaadin.flow.server.

All Superinterfaces:

Serializable

All Known Subinterfaces:

DevModeHandler, SessionExpiredHandler

All Known Implementing Classes:

AbstractDevServerRunner, BootstrapHandler, DevBundleBuildingHandler, FaviconHandler, HeartbeatHandler, IndexHtmlRequestHandler, JavaScriptBootstrapHandler, PushRequestHandler, PwaHandler, SessionRequestHandler, StreamRequestHandler, SynchronizedRequestHandler, TranslationFileRequestHandler, UidlRequestHandler, UnsupportedBrowserHandler, ViteHandler, WebComponentBootstrapHandler, WebComponentProvider

public interface RequestHandler extends Serializable

Handler for producing a response to HTTP requests. Handlers can be either added on a service level, common for all users, or on a session level for only a single user.

Since:

1.0

Method Summary

Modifier and Type

Method

Description

boolean

handleRequest(VaadinSession session, VaadinRequest request, VaadinResponse response)

Called when a request needs to be handled.

Method Details
- handleRequest
  
  boolean handleRequest(VaadinSession session, VaadinRequest request, VaadinResponse response) throws IOException
  
  Called when a request needs to be handled. If a response is written, this method should return true to indicate that no more request handlers should be invoked for the request.
  Note that request handlers by default do not lock the session. If you are using VaadinSession or anything inside the VaadinSession you must ensure the session is locked. This can be done by extending SynchronizedRequestHandler or by using VaadinSession.accessSynchronously(Command) or UI.accessSynchronously(Command).
  
  Parameters:
  
  session - The session for the request
  
  request - The request to handle
  
  response - The response object to which a response can be written.
  
  Returns:
  
  true if a response has been written and no further request handlers should be called, otherwise false
  
  Throws:
  
  IOException - If an IO error occurred

com.vaadin.flow.server.

Interface RequestHandler

Method Summary

Method Details

handleRequest