rss.java

一个jsp写的bbs

package com.laoer.bbscs.web.servlet;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import org.springframework.web.context.*;
import org.springframework.web.context.support.*;
import com.laoer.bbscs.service.ForumService;
import com.laoer.bbscs.service.config.SysConfig;
import com.laoer.bbscs.service.BoardService;
import com.sun.syndication.feed.synd.SyndFeedImpl;
import com.sun.syndication.feed.synd.SyndFeed;
import com.sun.syndication.feed.synd.SyndContent;
import com.laoer.bbscs.comm.BBSCSUtil;
import com.sun.syndication.feed.synd.SyndEntryImpl;
import com.laoer.bbscs.bean.Forum;
import com.sun.syndication.feed.synd.SyndEntry;
import java.net.MalformedURLException;
import com.sun.syndication.feed.synd.SyndContentImpl;
import org.apache.commons.logging.LogFactory;
import org.apache.commons.logging.Log;
import org.jdom.output.Format;
import com.sun.syndication.io.SyndFeedOutput;
import org.jdom.Document;
import org.jdom.output.XMLOutputter;
import com.laoer.bbscs.bean.Board;
import com.laoer.bbscs.service.web.Pages;
import com.laoer.bbscs.service.web.PageList;

/**
 * <p>Title: TianyiBBS</p>
 *
 * <p>Description: BBSCS</p>
 *
 * <p>Copyright: Copyright (c) 2006</p>
 *
 * <p>Company: Laoer.com</p>
 *
 * @author Laoer
 * @version 7.0
 */


public class Rss
    extends HttpServlet {

  private static final Log logger = LogFactory.getLog(Rss.class);

  private static final String CONTENT_TYPE = "text/xml; charset=UTF-8";

  //Initialize global variables
  public void init() throws ServletException {
  }

  //Process the HTTP Get request
  public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException,
      IOException {
    long bid;
    try {
      bid = Long.parseLong(request.getParameter("bid"));
    }
    catch (NumberFormatException e) {
      bid = 0L;
    }
    String action = request.getParameter("action");
    if (action == null) {
      action = "";
    }

    response.setContentType(CONTENT_TYPE);
    PrintWriter out = response.getWriter();

    WebApplicationContext wc = WebApplicationContextUtils.getWebApplicationContext(this.getServletContext());

    ForumService forumService = (ForumService) wc.getBean("forumService");
    SysConfig sysConfig = (SysConfig) wc.getBean("sysConfig");
    BoardService boardService = (BoardService) wc.getBean("boardService");

    SyndFeed feed = new SyndFeedImpl();
    feed.setFeedType("rss_2.0");
    String postLink = "";

    if (bid == 0) {
      feed.setTitle(sysConfig.getForumName());
      feed.setLink(sysConfig.getForumUrl());
      feed.setDescription(sysConfig.getWebName() + " - " + sysConfig.getForumName());

      List entries = new ArrayList();
      SyndEntry entry;
      SyndContent description;

      //List newfs = forumService.findForumsAllNew(50);
      List newfs = forumService.findForumsAllNewCache(50);
      for (int i = 0; i < newfs.size(); i++) {
        Forum f = (Forum) newfs.get(i);
        try {
          postLink = BBSCSUtil.absoluteActionURL(request,
                                                 "/main.bbscs?action=read&bid=" + f.getBoardID() + "&postID=" +
                                                 f.getMainID()).toString();
        }
        catch (MalformedURLException ex) {
          postLink = "";
        }

        entry = new SyndEntryImpl();
        entry.setTitle(f.getTitle());
        entry.setLink(postLink);
        entry.setPublishedDate(new Date(f.getPostTime()));

        description = new SyndContentImpl();
        if (f.getEditType() == 0) {
          description.setType("text/plain");
        }
        else {
          description.setType("text/html");
        }
        description.setValue(BBSCSUtil.getSpeShortString(f.getDetail(), 400, ""));
        entry.setDescription(description);
        entries.add(entry);

      }

      feed.setEntries(entries);
      try {
        SyndFeedOutput output = new SyndFeedOutput();
        //String feedStr = output.outputString(feed);
        Document messagesDocument = output.outputJDom(feed);
        Format format = Format.getPrettyFormat();
        format.setOmitDeclaration(true);
        XMLOutputter xmlo = new XMLOutputter(format);
        xmlo.output(messagesDocument, out);
      }
      catch (Exception ex) {
        logger.error(ex);
      }
    }
    else {
      Board board = boardService.getBoardByID(bid);
      if (board != null) {
        if (board.getBoardType() == 2 || board.getBoardType() == 3) {
          String forumLink = "";
          try {
            forumLink = BBSCSUtil.absoluteActionURL(request, "/forum.bbscs?action=index&bid=" + bid).toString();
          }
          catch (MalformedURLException ex2) {
            forumLink = "";
          }
          feed.setTitle(sysConfig.getForumName() + " - " + board.getBoardName());
          feed.setLink(forumLink);
          feed.setDescription(sysConfig.getWebName() + " - " + sysConfig.getForumName() + " - " +
                              board.getBoardName());

          List entries = new ArrayList();
          SyndEntry entry;
          SyndContent description;

          Pages pages = new Pages();
          pages.setPage(1);
          pages.setPerPageNum(40);
          pages.setFileName("");

          PageList pl = forumService.findForumsMainWWW(bid, pages);
          List flist = pl.getObjectList();

          for (int i = 0; i < flist.size(); i++) {
            Forum f = (Forum) flist.get(i);
            try {
              postLink = BBSCSUtil.absoluteActionURL(request,
                  "/main.bbscs?action=read&bid=" + f.getBoardID() + "&postID=" + f.getMainID()).toString();
            }
            catch (MalformedURLException ex) {
              postLink = "";
            }

            entry = new SyndEntryImpl();
            entry.setTitle(f.getTitle());
            entry.setLink(postLink);
            entry.setPublishedDate(new Date(f.getPostTime()));

            description = new SyndContentImpl();
            if (f.getEditType() == 0) {
              description.setType("text/plain");
            }
            else {
              description.setType("text/html");
            }
            description.setValue(BBSCSUtil.getSpeShortString(f.getDetail(), 400, ""));
            entry.setDescription(description);
            entries.add(entry);
          }

          feed.setEntries(entries);
          try {
            SyndFeedOutput output = new SyndFeedOutput();
            //String feedStr = output.outputString(feed);
            Document messagesDocument = output.outputJDom(feed);
            Format format = Format.getPrettyFormat();
            format.setOmitDeclaration(true);
            XMLOutputter xmlo = new XMLOutputter(format);
            xmlo.output(messagesDocument, out);
          }
          catch (Exception ex) {
            logger.error(ex);
          }
        }
      }
    }

    out.close();
    return;
  }

  //Clean up resources
  public void destroy() {
  }
}