Java 春季社交Facebook：如何从帖子中获取大照片？

Post对象具有属性getPicture（）。它包含指向非常小（130×130）图像的url

如何了解Facebook帖子的整体情况

示例url:

https://scontent.xx.fbcdn.net/v/t1.0-0/s130x130/13173717_10209376327474891_7842199861010585961_n.jpg?oh=d244df2db666e1d3be73cb7b76060337&oe=57A64C44

替换url中的s130x130没有帮助，因为这在新的Graph API中不起作用

我尝试使用

graphApi.mediaOperations（）

，但没有看到接受postId的方法。存在

graphApi.mediaOperations（）.getPhotos（objectID）

，但根据文档，此objectID必须是AlbumID或UserID，并且此方法引发异常：

org.springframework.social.uncategorizedapiepeiception:（#100）尝试访问节点类型（照片）上不存在的字段（照片）

编辑：我发现了一些有用的东西：

byte[]photo=graphApi.mediaOperations（）.getAlbumImage（post.getObjectId（），ImageType.NORMAL）

但是现在我得到一个字节[]而不是url，所以现在我必须将图像存储在某个地方：（
使用ImageType.LARGE而不是ImageType.NORMAL）
它返回CustomMultipartFile
我没有使用Spring Social framework获取Facebook帖子完整图片的直接方法。我使用Facebook的graph API获取完整图片。我添加的代码仅供参考。您需要根据需要进行自定义

FacebookTemplate facebook = new FacebookTemplate("<fb token>");

String[] ALL_POST_FIELDS = { "id", "actions", "admin_creator", "application", "caption", "created_time", "description", "from", "icon",
        "is_hidden", "is_published", "link", "message", "message_tags", "name", "object_id", "picture", "full_picture", "place", "privacy",
        "properties", "source", "status_type", "story", "to", "type", "updated_time", "with_tags", "shares", "likes.limit(1).summary(true)" };

URIBuilder uriBuilder = URIBuilder.fromUri(facebook.getBaseGraphApiUrl() + request.getAccountId() + "/posts");
uriBuilder = uriBuilder.queryParam("limit", String.valueOf(request.getRecordCount()));
uriBuilder.queryParam("fields", org.springframework.util.StringUtils.arrayToCommaDelimitedString(ALL_POST_FIELDS));
URI uri = uriBuilder.build();
LOGGER.info("facebook URL :{} ", uri);
JsonNode jsonNode = (JsonNode) facebook.getRestTemplate().getForObject(uri, JsonNode.class);
LOGGER.debug("facebook URL :{}, response: {} ", uri, jsonNode);
// you can cast jsonnode as required into your format or below line can be used to cast into PagedList<Post> format
PagedList<Post> posts = new DeserializingPosts().deserializeList(jsonNode, null, Post.class, true);

我们怎样才能获得facebook.feedOperations（）。因为它只返回小图片。并且没有选项设置ImageType.Maven org.springframework.social spring social facebook 2.0.3.RELEASE@AwanishKumar你解决了这个问题吗？我现在面临着同样的问题。ImageType是spring social的facebook API中的枚举。更多参考信息：@kavishmital是的，但如果我获取facebook.feedOperations（）如何获取正常大小的图像？@Deniel Henao:我使用自定义代码解决了它。我添加代码作为参考答案，您可以根据需要自定义。feedOperations（）的问题您解决了吗？
@Component
public class DeserializingPosts extends AbstractOAuth2ApiBinding {

    private ObjectMapper objectMapper = new ObjectMapper();

    private static final Logger LOGGER = Logger.getLogger(DeserializingPosts.class);

    public <T> PagedList<T> deserializeList(JsonNode jsonNode, String postType, Class<T> type, boolean accountFlag) {
        JsonNode dataNode = jsonNode.get("data");
        return deserializeList(dataNode, postType, type);
    }


    public <T> PagedList<T> deserializeList(JsonNode jsonNode, String postType, Class<T> type) {
        List posts = new ArrayList();
        for (Iterator iterator = jsonNode.iterator(); iterator.hasNext();) {
            posts.add(deserializePost(postType, type, (ObjectNode) iterator.next()));
        }
        if (jsonNode.has("paging")) {
            JsonNode pagingNode = jsonNode.get("paging");
            PagingParameters previousPage = PagedListUtils.getPagedListParameters(pagingNode, "previous");
            PagingParameters nextPage = PagedListUtils.getPagedListParameters(pagingNode, "next");
            return new PagedList(posts, previousPage, nextPage);
        }

        return new PagedList(posts, null, null);
    }


    public <T> T deserializePost(String postType, Class<T> type, ObjectNode node) {
        try {
            if (postType == null) {
                postType = determinePostType(node);
            }

            node.put("postType", postType);
            node.put("type", postType);
            MappingJackson2HttpMessageConverter converter = super.getJsonMessageConverter();
            this.objectMapper = new ObjectMapper();
            this.objectMapper.registerModule(new FacebookModule());
            converter.setObjectMapper(this.objectMapper);
            return this.objectMapper.reader(type).readValue(node.toString());
        } catch (IOException shouldntHappen) {
            throw new UncategorizedApiException("facebook", "Error deserializing " + postType + " post" + shouldntHappen.getMessage(),
                    shouldntHappen);
        }
    }

    private String determinePostType(ObjectNode node) {
        if (node.has("type")) {
            try {
                String type = node.get("type").textValue();
                Post.PostType.valueOf(type.toUpperCase());
                return type;
            } catch (IllegalArgumentException e) {
                LOGGER.error("Error occured while determining post type: " + e.getMessage(), e);
                return "post";
            }
        }
        return "post";
    }

}