javax.servlet

Interface ReadListener

Contents
  • All Superinterfaces:
    EventListener

    public interface ReadListener
extends EventListener

    This class represents a call-back mechanism that will notify implementations as HTTP request data becomes available to be read without blocking.

    Since:
    Servlet 3.1

    • Method Detail

      • onDataAvailable

        void onDataAvailable()
              throws IOException
        When an instance of the ReadListener is registered with a ServletInputStream, this method will be invoked by the container the first time when it is possible to read data. Subsequently the container will invoke this method if and only if ServletInputStream.isReady() method has been called and has returned false.
        Throws:
        IOException - if an I/O related error has occurred during processing

      • onAllDataRead

        void onAllDataRead()
            throws IOException
        Invoked when all data for the current request has been read.
        Throws:
        IOException - if an I/O related error has occurred during processing

      • onError

        void onError(Throwable t)
        Invoked when an error occurs processing the request.

Document created the 11/06/2005, last modified the 18/08/2025
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