校内应用API开发源码

目前在51，校内，facebook开发小应用越来越热，这里我仅以xiaonei.com提供的APP Java API为例，探讨他的实现方法，简单来说就是分为2步：

1. 申请个应用，得到应用的API Key和Secret两个数值
2. 利用这两个数值，我们就可以使用xiaonei的Java API，以下代码用来实现获取你的个人信息和你的好友信息代码（由于邀请API已过期，所以不能使用）：

package com.cxlh.servlet;

 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.EnumSet;
 import java.util.List;

 import javax.servlet.ServletException;
 import javax.servlet.http.HttpServlet;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;

 import org.w3c.dom.Document;

 import com.common.utils.StrCharUtil;
 import com.xiaonei.api.ProfileField;
 import com.xiaonei.api.XiaoneiException;
 import com.xiaonei.api.XiaoneiRestClient;
 import com.xiaonei.api.schema.Friend;
 import com.xiaonei.api.schema.FriendsGetFriendsResponse;
 import com.xiaonei.api.schema.RequestsSendRequestResponse;
 import com.xiaonei.api.schema.UsersGetInfoResponse;

 import net.sf.json.JSONArray;
 import net.sf.json.JSONObject;


 /**
 * Servlet implementation class XN
 */
 public class XN extends HttpServlet {
     private static final long serialVersionUID = 1L;

     public static String PARAM_XN_SIG_IN_IFRAME = "xn_sig_in_iframe";

     public static String PARAM_XN_SIG_TIME = "xn_sig_time";

     public static String PARAM_XN_SIG_ADDED = "xn_sig_added";

     public static String PARAM_XN_SIG_USER = "xn_sig_user";

     public static String PARAM_XN_SIG_SESSION_KEY = "xn_sig_session_key";

     public static String PARAM_XN_SIG_API_KEY = "xn_sig_api_key";

     /**
     * @see HttpServlet#HttpServlet()
     */
     public XN() {
         super();
         // TODO Auto-generated constructor stub
    }

     private List<Friend> getFriend(XiaoneiRestClient client) throws Exception{
        client.friends_getFriends();
        FriendsGetFriendsResponse resp = (FriendsGetFriendsResponse) client.getResponsePOJO();
        List<Friend> friends = resp.getFriend();
         return friends;
        }
    }

     private String buildUserInfo(int id) {
          StringBuffer sb=new StringBuffer();
          sb.append("<div align=\"center\">\n");
          sb.append("图片：<xn:profile-pic uid=\"");
         sb.append(id);
          sb.append("\" linked=\"true\" size=\"tiny\"/><br>\n");
          sb.append("姓名：<xn:name uid=\""+id+"\" linked=\"true\" shownetwork=\"true\" />\n");
          sb.append("</div>\n");
          return sb.toString();
         }

     /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
     */
     protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

         response.setContentType("text/html;charset=utf-8");
         response.setCharacterEncoding("utf-8");
         response.setHeader("Charset", "utf-8");
         response.setHeader("Cache-Control", "no-cache");
         request.setCharacterEncoding("UTF-8");

         JSONObject json = new JSONObject();

         String cmd=StrCharUtil.formatNullStr(request.getParameter("cmd"));
         String callback=StrCharUtil.formatNullStr(request.getParameter("callback"));

        String sessionKey = request.getParameter(PARAM_XN_SIG_SESSION_KEY);


         XiaoneiRestClient client = new XiaoneiRestClient("你的APIKey",
                 "你的Secret Key", sessionKey);
         //client.setDebug(true);

         try{
             if("getfriends".equals(cmd)){
                JSONArray jj = JSONArray.fromObject(getFriend(client));
                 json.put("res",jj.toString());
             }else if("myinfor".equals(cmd)){
                 int loggedInUserId = 0;
                  try {
                     loggedInUserId = client.users_getLoggedInUser();
                     EnumSet<ProfileField> enumFields = EnumSet.of(ProfileField.NAME,
                             ProfileField.HOMETOWN_LOCATION,ProfileField.BIRTHDAY,
                             ProfileField.HEADURL,ProfileField.MAINURL,
                             ProfileField.SEX,ProfileField.STAR,ProfileField.TINYURL,
                             ProfileField.ZIDOU,ProfileField.UNIVERSITY_HISTORY,
                             ProfileField.WORK_HISTORY);

                     Document doc = client.users_getInfo(loggedInUserId, enumFields);
                      json.put("xml",doc.toString());
                     UsersGetInfoResponse loggedUserGetInfoRes = (UsersGetInfoResponse) client.getResponsePOJO();
                      json.put("res",JSONArray.fromObject(loggedUserGetInfoRes.getUser()));
                 }
                  catch(XiaoneiException e) {
                     e.printStackTrace();
                 }
             }else if("invite".equals(cmd)){
                 List<Integer> userIds = new ArrayList();
                List<Friend> friends = getFriend(client);

                 for (Friend f:friends) {
                    userIds.add(f.getId());
                }

                client.requests_sendRequest(userIds);
                 request.setAttribute("uids", client.getRawResponse());
                 //进一步看看都成功邀请了哪些朋友
                RequestsSendRequestResponse resp = (RequestsSendRequestResponse) client.getResponsePOJO();

                List<Integer> uids = resp.getUid();

                 json.put("res",JSONArray.fromObject(uids));
            }
             if(json!=null){
                 if(callback.equals("")){ //没有回调函数
                    response.getWriter().println(json.toString());
                 }else{
                     response.setContentType("text/javascript;charset=utf-8");
                     response.getWriter().println(callback+"("+json.toString()+")");
                }
            }
         }catch(Exception ex){
            ex.printStackTrace();
        }

    }

     /**
     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
     */
     protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
         // TODO Auto-generated method stub
         super.doGet(request, response);
    }

}

package com.cxlh.servlet;

import java.io.IOException;
import java.util.ArrayList;
import java.util.EnumSet;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.w3c.dom.Document;

import com.common.utils.StrCharUtil;
import com.xiaonei.api.ProfileField;
import com.xiaonei.api.XiaoneiException;
import com.xiaonei.api.XiaoneiRestClient;
import com.xiaonei.api.schema.Friend;
import com.xiaonei.api.schema.FriendsGetFriendsResponse;
import com.xiaonei.api.schema.RequestsSendRequestResponse;
import com.xiaonei.api.schema.UsersGetInfoResponse;

import net.sf.json.JSONArray;
import net.sf.json.JSONObject;


/**
 * Servlet implementation class XN
 */
public class XN extends HttpServlet {
	private static final long serialVersionUID = 1L;
	
	public static String PARAM_XN_SIG_IN_IFRAME = "xn_sig_in_iframe";

	public static String PARAM_XN_SIG_TIME = "xn_sig_time";

	public static String PARAM_XN_SIG_ADDED = "xn_sig_added";

	public static String PARAM_XN_SIG_USER = "xn_sig_user";

	public static String PARAM_XN_SIG_SESSION_KEY = "xn_sig_session_key";

	public static String PARAM_XN_SIG_API_KEY = "xn_sig_api_key";	
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public XN() {
        super();
        // TODO Auto-generated constructor stub
    }

    private List<Friend> getFriend(XiaoneiRestClient client) throws Exception{
	    client.friends_getFriends();
	    FriendsGetFriendsResponse resp = (FriendsGetFriendsResponse) client.getResponsePOJO();
	    List<Friend> friends = resp.getFriend();
	    return friends;
	    }    	
    }
    
    private String buildUserInfo(int id) {
    	 StringBuffer sb=new StringBuffer();
    	 sb.append("<div align=\"center\">\n");
    	 sb.append("图片：<xn:profile-pic uid=\"");
    	 sb.append(id);
    	 sb.append("\" linked=\"true\" size=\"tiny\"/><br>\n");
    	 sb.append("姓名：<xn:name uid=\""+id+"\" linked=\"true\" shownetwork=\"true\" />\n");
    	 sb.append("</div>\n");
    	 return sb.toString();
    	 }
    	     
	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		response.setContentType("text/html;charset=utf-8");
		response.setCharacterEncoding("utf-8");
		response.setHeader("Charset", "utf-8");
		response.setHeader("Cache-Control", "no-cache");
		request.setCharacterEncoding("UTF-8");
		
		JSONObject json = new JSONObject();
		
		String cmd=StrCharUtil.formatNullStr(request.getParameter("cmd"));
		String callback=StrCharUtil.formatNullStr(request.getParameter("callback"));
		
		String sessionKey = request.getParameter(PARAM_XN_SIG_SESSION_KEY);
		
	
	   	XiaoneiRestClient client = new XiaoneiRestClient("你的APIKey", 
	   			"你的Secret Key", sessionKey);
	   	//client.setDebug(true);
		
		try{
			if("getfriends".equals(cmd)){
				JSONArray jj = JSONArray.fromObject(getFriend(client));
				json.put("res",jj.toString());
			}else if("myinfor".equals(cmd)){
				int loggedInUserId = 0;
				 try {
					 loggedInUserId = client.users_getLoggedInUser();
					 EnumSet<ProfileField> enumFields = EnumSet.of(ProfileField.NAME,
							 ProfileField.HOMETOWN_LOCATION,ProfileField.BIRTHDAY,
							 ProfileField.HEADURL,ProfileField.MAINURL,
							 ProfileField.SEX,ProfileField.STAR,ProfileField.TINYURL,
							 ProfileField.ZIDOU,ProfileField.UNIVERSITY_HISTORY,
							 ProfileField.WORK_HISTORY);
							 
					 Document doc = client.users_getInfo(loggedInUserId, enumFields);
					 json.put("xml",doc.toString());
					 UsersGetInfoResponse loggedUserGetInfoRes = (UsersGetInfoResponse) client.getResponsePOJO();
					 json.put("res",JSONArray.fromObject(loggedUserGetInfoRes.getUser()));
				 }
				 catch(XiaoneiException e) {
					 e.printStackTrace();
				 }
			}else if("invite".equals(cmd)){
				List<Integer> userIds = new ArrayList();
				List<Friend> friends = getFriend(client);

				for (Friend f:friends) {
					userIds.add(f.getId());
				}

				client.requests_sendRequest(userIds);
				request.setAttribute("uids", client.getRawResponse());
				//进一步看看都成功邀请了哪些朋友
				RequestsSendRequestResponse resp = (RequestsSendRequestResponse) client.getResponsePOJO();
				
				List<Integer> uids = resp.getUid();
				
				json.put("res",JSONArray.fromObject(uids));
			}
			if(json!=null){
				if(callback.equals("")){ //没有回调函数
					response.getWriter().println(json.toString());
				}else{
					response.setContentType("text/javascript;charset=utf-8");
					response.getWriter().println(callback+"("+json.toString()+")");
				}		
			}
		}catch(Exception ex){
			ex.printStackTrace();
		}		
	
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		super.doGet(request, response);
	}

}

 

 最终效果见校内网：http://apps.xiaonei.com/testfaqee