Interface StreamingResponse


  • public interface StreamingResponse
    Allows streaming a response directly, similar to StreamingOutput. Unlike StreamingOutput, though, StreamingResponse allows HTTP headers to be set prior to streaming. Setting headers in write(javax.ws.rs.core.MultivaluedMap<java.lang.String, java.lang.Object>, java.io.OutputStream) instead of on the Response wrapping this StreamingResponse, allows setting headers only if the operations leading up to streaming bytes actually succeed.

    Note that, if just-in-time headers are not needed, it's preferable to use the standard StreamingOutput interface instead.

    Since:
    9.5.0
    • Method Summary

      All Methods Instance Methods Abstract Methods 
      Modifier and Type Method Description
      void write​(@NotNull javax.ws.rs.core.MultivaluedMap<String,​Object> httpHeaders, @NotNull OutputStream outputStream)
      Writes the entity payload to the response, optionally setting additional HTTP headers first.
    • Method Detail

      • write

        void write​(@NotNull
                   @NotNull javax.ws.rs.core.MultivaluedMap<String,​Object> httpHeaders,
                   @NotNull
                   @NotNull OutputStream outputStream)
            throws IOException,
                   javax.ws.rs.WebApplicationException
        Writes the entity payload to the response, optionally setting additional HTTP headers first.

        Additional headers must be set before the first byte is written to the provided OutputStream. When the first byte is written pending headers are flushed, and any subsequent headers will be ignored.

        Parameters:
        httpHeaders - a mutable map of HTTP headers, allowing new headers to be set (HTTP headers can only be set prior to writing any bytes to the provided OutputStream.)
        outputStream - the stream to write the entity payload to
        Throws:
        IOException - if the entity cannot be written to the stream
        javax.ws.rs.WebApplicationException - if an unexpected error occurs and the overall Response should be changed (The response can only be changed if this exception is thrown prior to writing any bytes to the provided OutputStream.)