基于java的开发源码-Facebook API 的Java 封装请求处理组件 RestFB.zip

# RestFB (http://restfb.com) ## What it is RestFB is a pure Java Facebook Graph API and Old REST API client with no external dependencies. ## Licensing RestFB uses other open-source software - see the "licensing" directory. RestFB itself is open source software released under the terms of the MIT License. ## Installation RestFB is a single JAR - just drop `restfb-1.6.11.jar` into your app and you're ready to go. Or, if you're using [Maven](http://maven.apache.org/), you can add RestFB to your project like this: ```xml <dependency> <groupId>com.restfb</groupId> <artifactId>restfb</artifactId> <version>1.6.11</version> </dependency> ``` ## Building it Yourself Just type ant dist ...and you're done. ## Usage examples Please see http://restfb.com for complete documentation. #### Initialization ```java // DefaultFacebookClient is the FacebookClient implementation // that ships with RestFB. You can customize it by passing in // custom JsonMapper and WebRequestor implementations, or simply // write your own FacebookClient instead for maximum control. FacebookClient facebookClient = new DefaultFacebookClient(MY_ACCESS_TOKEN); // It's also possible to create a client that can only access // publicly-visible data - no access token required. // Note that many of the examples below will not work unless you supply an access token! FacebookClient publicOnlyFacebookClient = new DefaultFacebookClient(); ``` #### Fetching Single Objects ```java // For all API calls, you need to tell RestFB how to turn the JSON // returned by Facebook into Java objects. In this case, the data // we get back should be mapped to the User and Page types, respectively. // You can write your own types too! User user = facebookClient.fetchObject("me", User.class); Page page = facebookClient.fetchObject("cocacola", Page.class); out.println("User name: " + user.getName()); out.println("Page likes: " + page.getLikes()); ``` #### Fetching Multiple Objects in One Call ```java FetchObjectsResults fetchObjectsResults = facebookClient.fetchObjects(Arrays.asList("me", "cocacola"), FetchObjectsResults.class); out.println("User name: " + fetchObjectsResults.me.getName()); out.println("Page likes: " + fetchObjectsResults.page.getLikes()); ... // Holds results from a "fetchObjects" call. // You need to write this class yourself! public class FetchObjectsResults { @Facebook User me; // If the Facebook property name doesn't match // the Java field name, specify the Facebook field name in the annotation. @Facebook("cocacola") Page page; } ``` #### Fetching Connections ```java Connection<User> myFriends = facebookClient.fetchConnection("me/friends", User.class); Connection<Post> myFeed = facebookClient.fetchConnection("me/feed", Post.class); out.println("Count of my friends: " + myFriends.getData().size()); out.println("First item in my feed: " + myFeed.getData().get(0)); // Connections support paging and are iterable for (List<Post> myFeedConnectionPage : myFeed) for (Post post : myFeedConnectionPage) out.println("Post: " + post); ``` #### Searching ```java // Searching is just a special case of fetching Connections - // all you have to do is pass along a few extra parameters. Connection<Post> publicSearch = facebookClient.fetchConnection("search", Post.class, Parameter.with("q", "watermelon"), Parameter.with("type", "post")); Connection<User> targetedSearch = facebookClient.fetchConnection("me/home", User.class, Parameter.with("q", "Mark"), Parameter.with("type", "user")); out.println("Public search: " + publicSearch.getData().get(0).getMessage()); out.println("Posts on my wall by friends named Mark: " + targetedSearch.getData().size()); ``` #### Fetching Insights ```java // Fetching Insights data is as simple as fetching a Connection Connection<Insight> insights = facebookClient.fetchConnection("PAGE_ID/insights", Insight.class); for (Insight insight : insights.getData()) out.println(insight.getName()); ``` #### Executing FQL Queries ```java String query = "SELECT uid, name FROM user WHERE uid=220439 or uid=7901103"; List<FqlUser> users = facebookClient.executeQuery(query, FqlUser.class); out.println("Users: " + users); ... // Holds results from an "executeQuery" call. // You need to write this class yourself! // Be aware that FQL fields don't always map to Graph API Object fields. public class FqlUser { @Facebook String uid; @Facebook String name; @Override public String toString() { return String.format("%s (%s)", name, uid); } } ``` #### Metadata/Introspection ```java // You can specify metadata=1 for many calls, not just this one. // See the Facebook Graph API documentation for more details. User userWithMetadata = facebookClient.fetchObject("me", User.class, Parameter.with("metadata", 1)); out.println("User metadata: has albums? " + userWithMetadata.getMetadata().getConnections().hasAlbums()); ``` #### Passing Parameters ```java // You can pass along any parameters you'd like to the Facebook endpoint. Date oneWeekAgo = new Date(currentTimeMillis() - 1000L * 60L * 60L * 24L * 7L); Connection<Post> filteredFeed = facebookClient.fetchConnection("me/feed", Post.class, Parameter.with("limit", 3), Parameter.with("until", "yesterday"), Parameter.with("since", oneWeekAgo)); out.println("Filtered feed count: " + filteredFeed.getData().size()); ``` #### Selecting Specific Fields ```java User user = facebookClient.fetchObject("me", User.class, Parameter.with("fields", "id, name")); out.println("User name: " + user.getName()); ``` #### Getting Any Kind of Data as a JSON Object ```java // Sometimes you can't know field names at compile time // so the @Facebook annotation can't be used. // Or maybe you'd like full control over the data that gets returned. // Either way, RestFB has you covered. Just map any API call to JsonObject. // Here's how to fetch a single object JsonObject btaylor = facebookClient.fetchObject("btaylor", JsonObject.class); out.println(btaylor.getString("name")); // Here's how to fetch a connection JsonObject photosConnection = facebookClient.fetchObject("me/photos", JsonObject.class); String firstPhotoUrl = photosConnection.getJsonArray("data").getJsonObject(0).getString("source"); out.println(firstPhotoUrl); // Here's how to handle an FQL query String query = "SELECT uid, name FROM user WHERE uid=220439 or uid=7901103"; List<JsonObject> queryResults = facebookClient.executeQuery(query, JsonObject.class); out.println(queryResults.get(0).getString("name")); // Sometimes it's helpful to use JsonMapper directly if you're working with JsonObjects. List<String> ids = new ArrayList<String>(); ids.add("btaylor"); ids.add("http://www.imdb.com/title/tt0117500/"); // First, make the API call... JsonObject results = facebookClient.fetchObjects(ids, JsonObject.class); // ...then pull out raw JSON data and map each type "by hand". // Normally your FacebookClient uses a JsonMapper internally, but // there's nothing stopping you from using it too! JsonMapper jsonMapper = new DefaultJsonMapper(); User user = jsonMapper.toJavaObject(results.getString("btaylor"), User.class); Url url = jsonMapper.toJavaObject(results.getString("http://restfb.com"), Url.class); out.println("User is " + user); out.println("URL is " + url); ``` #### Publishing a Message and Event ```java // Publishing a simple message. // FacebookType represents any Facebook Graph Object that has an ID property. FacebookType publishMessageResponse = facebookClient.publish("me/feed", FacebookType.class, Parameter.with("message", "RestFB test")); out.println("Published message ID: " + publishMessageResponse.getId()); // Publishing an event Date tomorrow = new Date(currentTimeMillis() + 1000L * 60L * 60L * 24L); Date twoDaysFromNow = new Date(currentTimeMillis() + 1000L * 60L * 60L * 48L); FacebookType publishEventResponse = facebookClient.publish("me/events", FacebookTy