JpaBenchResource.java 文件源码

/**
 * Bench the get picture file.
 * 
 * @return the JAX-RS stream.
 */
@GET
@Path("picture.png")
@Produces(MediaType.APPLICATION_OCTET_STREAM)
@OnNullReturn404
public StreamingOutput downloadLobFile() {
    log.info("Picture download is requested");
    final byte[] firstAvailableLob = jpaDao.getLastAvailableLob();
    if (firstAvailableLob.length == 0) {
        return null;
    }
    return output -> {
        try {
            IOUtils.write(firstAvailableLob, output);
        } catch (final IOException e) {
            throw new IllegalStateException("Unable to write the LOB data", e);
        }
    };
}