protected void writeResourceRegion(ResourceRegion region, HttpOutputMessage outputMessage) throws IOException { Assert.notNull(region, "ResourceRegion must not be null"); HttpHeaders responseHeaders = outputMessage.getHeaders(); long start = region.getPosition(); long end = start + region.getCount() - 1; Long resourceLength = region.getResource().contentLength(); end = Math.min(end, resourceLength - 1); long rangeLength = end - start + 1; responseHeaders.add("Content-Range", "bytes " + start + '-' + end + '/' + resourceLength); responseHeaders.setContentLength(rangeLength); InputStream in = region.getResource().getInputStream(); try { StreamUtils.copyRange(in, outputMessage.getBody(), start, end); } finally { try { in.close(); } catch (IOException ex) { // ignore } } }
@Test public void copyRange() throws Exception { ByteArrayOutputStream out = spy(new ByteArrayOutputStream()); StreamUtils.copyRange(new ByteArrayInputStream(bytes), out, 0, 100); byte[] range = Arrays.copyOfRange(bytes, 0, 101); assertThat(out.toByteArray(), equalTo(range)); verify(out, never()).close(); }
protected void writeResourceRegion(ResourceRegion region, HttpOutputMessage outputMessage) throws IOException { Assert.notNull(region, "ResourceRegion must not be null"); HttpHeaders responseHeaders = outputMessage.getHeaders(); long start = region.getPosition(); long end = start + region.getCount() - 1; Long resourceLength = region.getResource().contentLength(); end = Math.min(end, resourceLength - 1); long rangeLength = end - start + 1; responseHeaders.add("Content-Range", "bytes " + start + '-' + end + '/' + resourceLength); responseHeaders.setContentLength(rangeLength); InputStream in = region.getResource().getInputStream(); try { StreamUtils.copyRange(in, outputMessage.getBody(), start, end); } finally { try { in.close(); } catch (IOException ex) { // ignore } } }
println(out); StreamUtils.copyRange(in, out, start, end);
println(out); StreamUtils.copyRange(in, out, start, end);
protected void writeResourceRegion(ResourceRegion region, HttpOutputMessage outputMessage) throws IOException { Assert.notNull(region, "ResourceRegion must not be null"); HttpHeaders responseHeaders = outputMessage.getHeaders(); long start = region.getPosition(); long end = start + region.getCount() - 1; Long resourceLength = region.getResource().contentLength(); end = Math.min(end, resourceLength - 1); long rangeLength = end - start + 1; responseHeaders.add("Content-Range", "bytes " + start + '-' + end + '/' + resourceLength); responseHeaders.setContentLength(rangeLength); InputStream in = region.getResource().getInputStream(); try { StreamUtils.copyRange(in, outputMessage.getBody(), start, end); } finally { try { in.close(); } catch (IOException ex) { // ignore } } }
protected void writeResourceRegion(ResourceRegion region, HttpOutputMessage outputMessage) throws IOException { Assert.notNull(region, "ResourceRegion must not be null"); HttpHeaders responseHeaders = outputMessage.getHeaders(); long start = region.getPosition(); long end = start + region.getCount() - 1; Long resourceLength = region.getResource().contentLength(); end = Math.min(end, resourceLength - 1); long rangeLength = end - start + 1; responseHeaders.add("Content-Range", "bytes " + start + '-' + end + '/' + resourceLength); responseHeaders.setContentLength(rangeLength); InputStream in = region.getResource().getInputStream(); try { StreamUtils.copyRange(in, outputMessage.getBody(), start, end); } finally { try { in.close(); } catch (IOException ex) { // ignore } } }
println(out); StreamUtils.copyRange(in, out, start, end);
println(out); StreamUtils.copyRange(in, out, start, end);