Java CacheControl類代碼示例

import javax.ws.rs.core.CacheControl; //導入依賴的package包/類
private Response cacheAwareResponse(
    Request request, String entity, EntityTag etag, Date lastModified, int maxAge
) {

  final Response.ResponseBuilder builderLastMod = request.evaluatePreconditions(lastModified);
  if (builderLastMod != null) {
    return builderLastMod.build();
  }

  final Response.ResponseBuilder builderEtag = request.evaluatePreconditions(etag);
  if (builderEtag != null) {
    return builderEtag.build();
  }

  final CacheControl cc = new CacheControl();
  cc.setMaxAge(maxAge);

  return Response.ok(entity)
      .tag(etag)
      .lastModified(lastModified)
      .cacheControl(cc)
      .build();
}
 

import javax.ws.rs.core.CacheControl; //導入依賴的package包/類
@Override
@SuppressWarnings("unchecked")
public <T> HeaderDelegate<T> createHeaderDelegate(final Class<T> type) {
    if (type == MediaType.class) {
        return (HeaderDelegate<T>) MEDIA_TYPE_DELEGATE;
    }
    if (type == Cookie.class) {
        return (HeaderDelegate<T>) COOKIE_DELEGATE;
    }
    if (type == NewCookie.class) {
        return (HeaderDelegate<T>) NEW_COOKIE_DELEGATE;
    }
    if (type == CacheControl.class) {
        return (HeaderDelegate<T>) CACHE_CONTROL_DELEGATE;
    }
    throw new IllegalArgumentException("Unrecognized header delegate: " + type);
}
 

import javax.ws.rs.core.CacheControl; //導入依賴的package包/類
@GET
@Path("{derivate}{path: (/[^?#]*)?}")
public Response show(@Context HttpServletRequest request, @Context Request jaxReq,
    @Context ServletContext context, @Context ServletConfig config) throws Exception {
    MCRContent content = getContent(request);
    String contentETag = content.getETag();
    Response.ResponseBuilder responseBuilder = null;
    EntityTag eTag = contentETag == null ? null : new EntityTag(contentETag);
    if (eTag != null) {
        responseBuilder = jaxReq.evaluatePreconditions(eTag);
    }
    if (responseBuilder == null) {
        responseBuilder = Response.ok(content.asByteArray(), MediaType.valueOf(content.getMimeType()));
    }
    if (eTag != null) {
        responseBuilder.tag(eTag);
    }
    if (content.isUsingSession()) {
        CacheControl cc = new CacheControl();
        cc.setPrivate(true);
        cc.setMaxAge(0);
        cc.setMustRevalidate(true);
        responseBuilder.cacheControl(cc);
    }
    return responseBuilder.build();
}
 

import javax.ws.rs.core.CacheControl; //導入依賴的package包/類
@Test
public void testCustomerResource() throws Exception
{
   System.out.println("*** Create a new Customer ***");
   Customer newCustomer = new Customer();
   newCustomer.setFirstName("Bill");
   newCustomer.setLastName("Burke");
   newCustomer.setStreet("256 Clarendon Street");
   newCustomer.setCity("Boston");
   newCustomer.setState("MA");
   newCustomer.setZip("02115");
   newCustomer.setCountry("USA");

   Response response = client.target("http://localhost:8080/services/customers")
           .request().post(Entity.xml(newCustomer));
   if (response.getStatus() != 201) throw new RuntimeException("Failed to create");
   String location = response.getLocation().toString();
   System.out.println("Location: " + location);
   response.close();

   System.out.println("*** GET Created Customer **");
   response = client.target(location).request().get();
   CacheControl cc = CacheControl.valueOf(response.getHeaderString(HttpHeaders.CACHE_CONTROL));
   System.out.println("Max age: " + cc.getMaxAge());
}
 

import javax.ws.rs.core.CacheControl; //導入依賴的package包/類
@Autowired
public DefaultSmartcommitsService(@ComponentImport IssueManager issueManager,
        @Qualifier ("smartcommitsTransitionsHandler") TransitionHandler transitionHandler,
        @Qualifier ("smartcommitsCommentHandler") CommentHandler commentHandler,
        @Qualifier ("smartcommitsWorklogHandler") WorkLogHandler workLogHandler,
        @ComponentImport JiraAuthenticationContext jiraAuthenticationContext,
        @ComponentImport CrowdService crowdService)
{
    this.crowdService = checkNotNull(crowdService);

    NO_CACHE = new CacheControl();
    NO_CACHE.setNoCache(true);

    this.issueManager = checkNotNull(issueManager);
    this.transitionHandler = transitionHandler;
    this.commentHandler = commentHandler;
    this.workLogHandler = workLogHandler;
    this.jiraAuthenticationContext = checkNotNull(jiraAuthenticationContext);
}
 

import javax.ws.rs.core.CacheControl; //導入依賴的package包/類
/**
 * Run the CacheControl getNoStoreCacheControl() method test.
 *
 * @throws Exception
 *
 * @generatedBy CodePro at 12/16/14 4:40 PM
 */
@Test
public void testGetNoStoreCacheControl_1()
    throws Exception {

    CacheControl result = ResponseUtil.getNoStoreCacheControl();

    assertNotNull(result);
    assertEquals("private, no-cache, no-store, no-transform, max-age=0, s-maxage=0", result.toString());
    assertEquals(true, result.isPrivate());
    assertEquals(true, result.isNoTransform());
    assertEquals(true, result.isNoCache());
    assertEquals(true, result.isNoStore());
    assertEquals(0, result.getSMaxAge());
    assertEquals(false, result.isProxyRevalidate());
    assertEquals(false, result.isMustRevalidate());
    assertEquals(0, result.getMaxAge());
}
 

import javax.ws.rs.core.CacheControl; //導入依賴的package包/類
@javax.ws.rs.GET public Response method() {
    Response.ResponseBuilder responseBuilder = Response.ok();
    responseBuilder.header("X-Test", "Hello");
    responseBuilder.cacheControl(CacheControl.valueOf(""));
    responseBuilder.contentLocation(URI.create(""));
    responseBuilder.cookie();
    responseBuilder.entity(12d);
    responseBuilder.expires(new Date());
    responseBuilder.language(Locale.ENGLISH);
    responseBuilder.encoding("UTF-8");
    responseBuilder.lastModified(new Date());
    responseBuilder.link(URI.create(""), "rel");
    responseBuilder.location(URI.create(""));
    responseBuilder.status(433);
    responseBuilder.tag(new EntityTag(""));
    responseBuilder.type(MediaType.APPLICATION_JSON_TYPE);
    responseBuilder.variants(new LinkedList<>());

    return responseBuilder.build();
}
 

import javax.ws.rs.core.CacheControl; //導入依賴的package包/類
final ResponseBuilder newResponseBuilder(final Status status, @Nullable final Object entity,
        @Nullable final GenericType<?> type) {
    Preconditions.checkState(this.context.variant != null);
    final ResponseBuilder builder = Response.status(status);
    if (entity != null) {
        builder.entity(type == null ? entity : new GenericEntity<Object>(entity, type
                .getType()));
        builder.variant(this.context.variant);
        final CacheControl cacheControl = new CacheControl();
        cacheControl.setNoStore(true);
        if ("GET".equalsIgnoreCase(this.request.getMethod())
                || "HEAD".equalsIgnoreCase(this.request.getMethod())) {
            builder.lastModified(this.context.lastModified);
            builder.tag(this.context.etag);
            if (isCachingEnabled()) {
                cacheControl.setNoStore(false);
                cacheControl.setMaxAge(0); // always stale, must revalidate each time
                cacheControl.setMustRevalidate(true);
                cacheControl.setPrivate(getUsername() != null);
                cacheControl.setNoTransform(true);
            }
        }
        builder.cacheControl(cacheControl);
    }
    return builder;
}
 

import javax.ws.rs.core.CacheControl; //導入依賴的package包/類
@Override
public Response retrieveSomeSamples(final String ids) throws Exception {

	Integer[] keys = Util.parseAsLongArray(ids);

	List<SampleBean> data = new ArrayList<SampleBean>();

	SampleBean one = null;
	for (int i = 0; i < keys.length; i++)
	{
		one = new SampleBean(keys[i], 4, "test1", "test1");
		data.add(one);
	}

	CacheControl cc = new CacheControl();
	cc.setMaxAge(30000);

	GenericEntity<List<SampleBean>> entity =
			new GenericEntity<List<SampleBean>>(data) {
			};

	ResponseBuilder builder = Response.ok(entity);
	builder.cacheControl(cc);
	return builder.build();
}
 

import javax.ws.rs.core.CacheControl; //導入依賴的package包/類
/**
 * Get the {@link HttpHeaders#CACHE_CONTROL} header, if set.
 *
 * @return cache-control header or absent if cache-control header is not set
 */
public Optional<CacheControl> getCacheControl() {
    if (_cacheControl == null) {
        List<String> headerValues = _responseHeaders.get(CACHE_CONTROL);

        _cacheControl = Optional.absent();

        if (headerValues != null) {
            try {
                _cacheControl = Optional.of(CacheControl.valueOf(HttpHeaderUtils.join(headerValues)));
            } catch (Exception ex) {
                LOG.debug("Failed to parse cache-control header: value='{}'", headerValues, ex);
            }
        }
    }

    return _cacheControl;
}
 

import javax.ws.rs.core.CacheControl; //導入依賴的package包/類
@Override
public Matcher<CacheControl> build() {
    return new TypeSafeMatcher<CacheControl>() {

        @Override
        public void describeTo(Description description) {
            description.appendText("is a CacheControl header ");
            if(noCache != null) {
                description.appendText("with " + (noCache?"no":"") + " cache");
            }
        }

        @Override
        protected boolean matchesSafely(CacheControl item) {
            if(noCache != null) {
                if(item.isNoCache() != noCache) {
                    return false;
                }
            }
            return true;
        }
    };
}
 

import javax.ws.rs.core.CacheControl; //導入依賴的package包/類
/**
 * Show a photo.
 * @param num ID of the user
 * @return PNG
 * @throws IOException If fails
 */
@GET
@Path("/{id : \\d+}.png")
@Produces("image/png")
public Response index(@PathParam("id") final String num)
    throws IOException {
    final URN urn = URN.create(String.format("urn:aintshy:%s", num));
    final byte[] png = this.base().human(urn).profile().photo();
    if (png == null) {
        throw new WebApplicationException(
            Response.seeOther(
                URI.create("http://img.aintshy.com/no-photo.png")
            ).build()
        );
    }
    final CacheControl cache = new CacheControl();
    cache.setMaxAge((int) TimeUnit.HOURS.toSeconds(1L));
    cache.setPrivate(false);
    return Response.ok(new ByteArrayInputStream(png))
        .cacheControl(cache)
        .type("image/png")
        .build();
}
 

import javax.ws.rs.core.CacheControl; //導入依賴的package包/類
/**
 * Converts a {@code Cache-Control} annotation to a {@code Cache-Control}
 * Jersey API object.
 *
 * @param annotation the annotation
 *
 * @return the Jersey API object
 *
 * @see javax.ws.rs.core.CacheControl
 * @see com.github.autermann.jersey.cache.CacheControl
 */
private CacheControl createCacheControl(
        com.github.autermann.jersey.cache.CacheControl annotation) {
    CacheControl cacheControl = new CacheControl();
    cacheControl.setPrivate(annotation._private() ||
                            annotation.privateFields().length > 0);
    cacheControl.getPrivateFields()
            .addAll(Arrays.asList(annotation.privateFields()));
    cacheControl.setMustRevalidate(annotation.mustRevalidate());
    cacheControl.setNoCache(annotation.noCache() ||
                            annotation.noCacheFields().length > 0);
    cacheControl.getNoCacheFields()
            .addAll(Arrays.asList(annotation.noCacheFields()));
    cacheControl.setNoStore(annotation.noStore());
    cacheControl.setNoTransform(annotation.noTransform());
    cacheControl.setProxyRevalidate(annotation.proxyRevalidate());
    cacheControl.setMaxAge(annotation.maxAge());
    cacheControl.setSMaxAge(annotation.sMaxAge());
    for (CacheControlExtension e : annotation.extensions()) {
        cacheControl.getCacheExtension().put(e.key(), e.value());
    }
    return cacheControl;
}
 

import javax.ws.rs.core.CacheControl; //導入依賴的package包/類
@GET
public Response getImage(@PathParam("vreName") String vreName) {

  return transactionEnforcer.executeAndReturn(timbuctooActions -> {
    final Vre vre = timbuctooActions.getVre(vreName);
    if (vre == null) {
      return TransactionStateAndResult.commitAndReturn(Response.status(Response.Status.NOT_FOUND).build());
    }

    final byte[] imageBlob = timbuctooActions.getVreImageBlob(vreName);
    final MediaType mediaType = vre.getMetadata().getImageMediaType();

    if (imageBlob != null && mediaType != null) {
      final CacheControl cacheControl = new CacheControl();
      cacheControl.setMaxAge(604800);
      cacheControl.setPrivate(false);
      return TransactionStateAndResult.commitAndReturn(Response
        .ok(imageBlob).type(mediaType).cacheControl(cacheControl).build());
    } else {
      return TransactionStateAndResult.commitAndReturn(Response.status(Response.Status.NOT_FOUND).build());
    }
  });
}
 

import javax.ws.rs.core.CacheControl; //導入依賴的package包/類
@Override
public void filter(final ContainerRequestContext req, final ContainerResponseContext res) throws IOException {

    if (req.getMethod().equals(GET)) {
        final CacheControl cc = new CacheControl();
        cc.setMaxAge(cacheAge);
        res.getHeaders().add(CACHE_CONTROL, cc);
    }
}