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com.vaadin.flow.component.upload.receivers.
Package com.vaadin.flow.component.upload.receivers

Class FileBuffer

java.lang.Object
com.vaadin.flow.component.upload.receivers.AbstractFileBuffer
com.vaadin.flow.component.upload.receivers.FileBuffer

All Implemented Interfaces:

Receiver, Serializable

public class FileBuffer extends AbstractFileBuffer implements Receiver

Basic in file receiver implementation. File is stored by default to File created using File.createTempFile(String, String) with a null suffix.

For a custom file the constructor AbstractFileBuffer(FileFactory) should be used.

See Also:

  • Constructor Details

    • FileBuffer

      public FileBuffer()

      Creates a file buffer with a default file factory.

      Files will be created using File.createTempFile(String, String) and have that build 'upload_tmpfile_{FILENAME}_{currentTimeMillis}'

    • FileBuffer

      public FileBuffer(FileFactory factory)

      Creates a file buffer that uses a file factory to create a custom upload File.

      Parameters:

      factory - file factory for file buffer

  • Method Details

    • receiveUpload

      public OutputStream receiveUpload(String fileName, String mimeType)

      Description copied from interface: Receiver

      Invoked when a new upload arrives.

      Specified by:

      receiveUpload in interface Receiver

      Parameters:

      fileName - the desired filename of the upload, usually as specified by the client

      mimeType - the MIME type of the uploaded file

      Returns:

      stream to which the uploaded file should be written

    • getFileData

      public FileData getFileData()

      Get the file data object.

      Returns:

      file data for the latest upload or null

    • getFileName

      public String getFileName()

      Get the file name for this buffer.

      Returns:

      file name or empty if no file

    • getFileDescriptor

      public FileDescriptor getFileDescriptor()

      Get the output stream for file.

      Returns:

      file output stream or null if not available

    • getInputStream

      public InputStream getInputStream()

      Get the input stream for file.

      Returns:

      input stream for file or empty stream if file not found

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