Method Details

• setStatus

  void setStatus(int statusCode)

  Sets the (http) status code for the response. If you want to include an error message along the status code, use sendError(int, String) instead.

  Parameters:

  statusCode - the status code to set

  See Also:

  • HttpServletResponse.setStatus(int)

• setContentType

  void setContentType(String contentType)

  Sets the content type of this response. If the content type including a charset is set before getWriter() is invoked, the returned PrintWriter will automatically use the defined charset.

  Parameters:

  contentType - a string specifying the MIME type of the content

  See Also:

  • ServletResponse.setContentType(String)

• setHeader

  void setHeader(String name, String value)

  Sets the value of a generic response header. If the header had already been set, the new value overwrites the previous one.

  Parameters:

  name - the name of the header

  value - the header value.

  See Also:

  • HttpServletResponse.setHeader(String, String)

• setDateHeader

  void setDateHeader(String name, long timestamp)

  Properly formats a timestamp as a date header. If the header had already been set, the new value overwrites the previous one.

  Parameters:

  name - the name of the header

  timestamp - the number of milliseconds since epoch

  See Also:

  • HttpServletResponse.setDateHeader(String, long)

• getOutputStream

  OutputStream getOutputStream() throws IOException

  Returns a OutputStream for writing binary data in the response.

  Either this method or getWriter() may be called to write the response, not both.

  Returns:

  a OutputStream for writing binary data

  Throws:

  IOException - if an input or output exception occurred

  See Also:

  • getWriter()
  • ServletResponse.getOutputStream()

• getWriter

  PrintWriter getWriter() throws IOException

  Returns a PrintWriter object that can send character text to the client. The PrintWriter uses the character encoding defined using setContentType.

  Either this method or getOutputStream() may be called to write the response, not both.

  Returns:

  a PrintWriter for writing character text

  Throws:

  IOException - if an input or output exception occurred

  See Also:

  • getOutputStream()
  • ServletResponse.getWriter()

• setCacheTime

  void setCacheTime(long milliseconds)

  Sets cache time in milliseconds, -1 means no cache at all. All required headers related to caching in the response are set based on the time.

  Parameters:

  milliseconds - Cache time in milliseconds

• sendError

  void sendError(int errorCode, String message) throws IOException

  Sends an error response to the client using the specified status code and clears the buffer. In some configurations, this can cause a predefined error page to be displayed.

  Parameters:

  errorCode - the HTTP status code

  message - a message to accompany the error

  Throws:

  IOException - if an input or output exception occurs

  See Also:

  • HttpServletResponse.sendError(int, String)

• getService

  VaadinService getService()

  Gets the vaadin service for the context of this response.

  Returns:

  the vaadin service

  See Also:

  • VaadinService

• addCookie

  void addCookie(jakarta.servlet.http.Cookie cookie)

  Adds the specified cookie to the response. This method can be called multiple times to set more than one cookie.

  Parameters:

  cookie - the Cookie to return to the client

  See Also:

  • HttpServletResponse.addCookie(Cookie)

• setContentLength

  void setContentLength(int len)

  Sets the length of the content body in the response In HTTP servlets, this method sets the HTTP Content-Length header.

  Parameters:

  len - an integer specifying the length of the content being returned to the client

• setNoCacheHeaders

  default void setNoCacheHeaders()

  Sets all conceivable headers that might prevent a response from being stored in any caches.

• getCurrent

  static VaadinResponse getCurrent()

  Gets the currently processed Vaadin response. The current response is automatically defined when the request is started. The current response can not be used in e.g. background threads because of the way server implementations reuse response instances.

  Returns:

  the current Vaadin response instance if available, otherwise null