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Googleが提供するfacebook APIを使用してJavaでデスクトップアプリを構築しようとしています。いくつか質問があります:

1) ソケットプログラミングを利用する必要がありますか? （私は初心者であり、まだ行っていません:/）

2) auth_token を作成しようとすると、facebook api で java.net.UnknownHost 例外が発生します。

追加情報は非常に役立ちます。:)

java.lang.RuntimeException: java.net.UnknownHostException: api.facebook.com
at com.google.code.facebookapi.BasicClientHelper.runtimeException(BasicClientHelper.java:123)
at com.google.code.facebookapi.ExtensibleClient.callMethod(ExtensibleClient.java:538)
at com.google.code.facebookapi.ExtensibleClient.callMethod(ExtensibleClient.java:446)
at com.google.code.facebookapi.ExtensibleClient.auth_createToken(ExtensibleClient.java:860)
at com.google.code.facebookapi.SpecificReturnTypeAdapter.auth_createToken(SpecificReturnTypeAdapter.java:73)
at facebookConnection.FbStartingPoint.<init>(FbStartingPoint.java:26)
at sourcepoint.FirstWindow$1.actionPerformed(FirstWindow.java:41)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$000(Unknown Source)
at java.awt.EventQueue$1.run(Unknown Source)
at java.awt.EventQueue$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue$2.run(Unknown Source)
at java.awt.EventQueue$2.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
    Caused by: java.net.UnknownHostException: api.facebook.com
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at sun.net.NetworkClient.doConnect(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.<init>(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
at com.google.code.facebookapi.ExtensibleClient.postRequest(ExtensibleClient.java:583)
at com.google.code.facebookapi.ExtensibleClient.callMethod(ExtensibleClient.java:534)
... 41 more
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2 に答える 2

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マシンがapi.facebook.comホストにアクセスできないようです。プロキシを使用してインターネットに接続していますか?

telnet を使用して、コンピューター全体がインターネットに接続できることを確認してください (プロキシ構成のドライバーだけでなく)。

> telnet api.facebook.com 80
Trying 66.220.149.99...
Connected to api.facebook.com.
Escape character is '^]'.
GET /

HTTP/1.1 400 Bad Request
Content-Type: text/html
Date: Sat, 25 Aug 2012 16:29:53 GMT
Connection: close
Content-Length: 134

<HTML><HEAD>
<TITLE>400 Bad Request</TITLE>
</HEAD><BODY>
<H1>Method Not Implemented</H1>
Invalid method in request<P>
</BODY></HTML>
Connection closed by foreign host.
于 2012-08-25T16:29:25.227 に答える
0

api.facebook.com非推奨の古い REST API のエンドポイントです。おそらく接続する必要がありますgraph.facebook.com

それにもかかわらず、api.facebook.com は解決可能であり、レガシー API を使用している場合でも機能するはずです。

これはほぼ間違いなく、ネットワーク、ファイアウォール、コンピューター、DNS、または JDK の問題です。Facebook に接続するコードの問題であり、Facebook 側の問題ではありません。

于 2012-08-25T16:30:13.730 に答える