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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc (build 1.5.0_13) on Wed Sep 17 19:17:32 PDT 2008 --><META http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><TITLE>FacebookWebappHelper (Facebook Java Library 2.0.1 API)</TITLE><META NAME="keywords" CONTENT="com.google.code.facebookapi.FacebookWebappHelper class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="FacebookWebappHelper (Facebook Java Library 2.0.1 API)";}</SCRIPT><NOSCRIPT></NOSCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../com/google/code/facebookapi/package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/FacebookWebappHelper.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../com/google/code/facebookapi/FacebookSignatureUtil.html" title="class in com.google.code.facebookapi"><B>PREV CLASS</B></A> <A HREF="../../../../com/google/code/facebookapi/FacebookWebRequest.html" title="class in com.google.code.facebookapi"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../index.html?com/google/code/facebookapi/FacebookWebappHelper.html" target="_top"><B>FRAMES</B></A> <A HREF="FacebookWebappHelper.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | <A HREF="#field_summary">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: <A HREF="#field_detail">FIELD</A> | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">com.google.code.facebookapi</FONT><BR>Class FacebookWebappHelper<T></H2><PRE>java.lang.Object <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>com.google.code.facebookapi.FacebookWebappHelper<T></B></PRE><DL><DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../../com/google/code/facebookapi/Facebook.html" title="class in com.google.code.facebookapi">Facebook</A></DD></DL><HR><DL><DT><PRE>public class <B>FacebookWebappHelper<T></B><DT>extends java.lang.Object</DL></PRE><P>Utility class to handle authorization and authentication of requests. Objects of this class are meant to be created for every request. They are stateless and are not supposed to be kept in the session.<P><P><HR><P><!-- =========== FIELD SUMMARY =========== --><A NAME="field_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Field Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected <A HREF="../../../../com/google/code/facebookapi/IFacebookRestClient.html" title="interface in com.google.code.facebookapi">IFacebookRestClient</A><<A HREF="../../../../com/google/code/facebookapi/FacebookWebappHelper.html" title="type parameter in FacebookWebappHelper">T</A>></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/google/code/facebookapi/FacebookWebappHelper.html#apiClient">apiClient</A></B></CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/google/code/facebookapi/FacebookWebappHelper.html#apiKey">apiKey</A></B></CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected java.util.Map<java.lang.String,java.lang.String></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/google/code/facebookapi/FacebookWebappHelper.html#fbParams">fbParams</A></B></CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected static org.apache.commons.logging.Log</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/google/code/facebookapi/FacebookWebappHelper.html#log">log</A></B></CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/google/code/facebookapi/FacebookWebappHelper.html#secret">secret</A></B></CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected java.lang.Long</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/google/code/facebookapi/FacebookWebappHelper.html#user">user</A></B></CODE><BR> </TD></TR></TABLE> <!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../com/google/code/facebookapi/FacebookWebappHelper.html#FacebookWebappHelper(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse, java.lang.String, java.lang.String)">FacebookWebappHelper</A></B>(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, java.lang.String apiKey, java.lang.String secret)</CODE><BR> <B>Deprecated.</B> <I>please use different constructor, or factory methods</I></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../com/google/code/facebookapi/FacebookWebappHelper.html#FacebookWebappHelper(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse, java.lang.String, java.lang.String, com.google.code.facebookapi.IFacebookRestClient)">FacebookWebappHelper</A></B>(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, java.lang.String apiKey, java.lang.String secret, <A HREF="../../../../com/google/code/facebookapi/IFacebookRestClient.html" title="interface in com.google.code.facebookapi">IFacebookRestClient</A><<A HREF="../../../../com/google/code/facebookapi/FacebookWebappHelper.html" title="type parameter in FacebookWebappHelper">T</A>> apiClient)</CODE><BR> </TD></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Method Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/google/code/facebookapi/FacebookWebappHelper.html#doGetSession(java.lang.String)">doGetSession</A></B>(java.lang.String authToken)</CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/google/code/facebookapi/FacebookWebappHelper.html#generateSig(java.util.Map, java.lang.String)">generateSig</A></B>(java.util.Map<java.lang.String,java.lang.String> params, java.lang.String secret)</CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../../com/google/code/facebookapi/IFacebookRestClient.html" title="interface in com.google.code.facebookapi">IFacebookRestClient</A><<A HREF="../../../../com/google/code/facebookapi/FacebookWebappHelper.html" title="type parameter in FacebookWebappHelper">T</A>></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/google/code/facebookapi/FacebookWebappHelper.html#get_api_client()">get_api_client</A></B>()</CODE><BR> Synonym for <A HREF="../../../../com/google/code/facebookapi/FacebookWebappHelper.html#getFacebookRestClient()"><CODE>getFacebookRestClient()</CODE></A></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.Long</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/google/code/facebookapi/FacebookWebappHelper.html#get_loggedin_user()">get_loggedin_user</A></B>()</CODE><BR> Synonym for <A HREF="../../../../com/google/code/facebookapi/FacebookWebappHelper.html#getUser()"><CODE>getUser()</CODE></A></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/google/code/facebookapi/FacebookWebappHelper.html#getAddUrl(java.lang.String)">getAddUrl</A></B>(java.lang.String next)</CODE><BR> Returns the url that facebook uses to prompt the user to add this application.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/google/code/facebookapi/FacebookWebappHelper.html#getApiKey()">getApiKey</A></B>()</CODE><BR> Returns the api key used to initialize this object.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../../com/google/code/facebookapi/IFacebookRestClient.html" title="interface in com.google.code.facebookapi">IFacebookRestClient</A><<A HREF="../../../../com/google/code/facebookapi/FacebookWebappHelper.html" title="type parameter in FacebookWebappHelper">T</A>></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/google/code/facebookapi/FacebookWebappHelper.html#getFacebookRestClient()">getFacebookRestClient</A></B>()</CODE><BR> Returns the internal FacebookRestClient object.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/google/code/facebookapi/FacebookWebappHelper.html#getFacebookUrl(java.lang.String)">getFacebookUrl</A></B>(java.lang.String subDomain)</CODE><BR> Returns a url to a facebook sub-domain</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/google/code/facebookapi/FacebookWebappHelper.html#getLoginUrl(java.lang.String, boolean)">getLoginUrl</A></B>(java.lang.String next, boolean canvas)</CODE><BR> Returns the url that facebook uses to prompt the user to login to this application.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/google/code/facebookapi/FacebookWebappHelper.html#getSecret()">getSecret</A></B>()</CODE><BR> Returns the secret key used to initialize this object.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.Long</CODE></FONT></TD>⌨️ 快捷键说明
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