worddetailreacher.java

使用OSGi框架开发的分布式电子辞典

/*
 * @(#)WordDetailReacher.java
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Library General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */
package cn.edu.ynu.sei.dict.web.data;

import cn.edu.ynu.sei.dict.core.exception.NotFoundWordException;
import cn.edu.ynu.sei.dict.core.service.IDictQueryService;
import cn.edu.ynu.sei.dict.core.service.Word;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.osgi.framework.ServiceReference;

/**
 * Word detail information servlet.
 * @author zy
 * @author 88250
 * @version 1.0.0.0, Mar 8, 2008
 */
public class WordDetailReacher extends HttpServlet {

    private ServiceReference serviceReference;
    private IDictQueryService wordReader;

    /**
     * Constructor with arguments.
     * @param sr service reference
     * @param wordReader word reader
     */
    public WordDetailReacher(ServiceReference sr, IDictQueryService wordReader) {
        this.wordReader = wordReader;
        this.serviceReference = sr;
    }

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws javax.servlet.ServletException
     * @throws java.io.IOException 
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        HttpSession session = request.getSession();
        PrintWriter out = response.getWriter();
        String word = request.getParameter("word");
        System.out.println(word);
        //if(word.contains("'")){
            //word = word.replace("'", "\'");
        //}
        String author = request.getParameter("choose");
        Word keyWord = new Word();
        keyWord.self = word;
        keyWord.defComeFrom = author;
        try {
            Word result = wordReader.lookup(keyWord);
            if(result.definition.contains("@e@:")){
                System.out.println("haha");
                result.definition = result.definition.replace("@e@:", "例句:");
            }
            session.setAttribute("result", result);
            String output = result.self + ": " + result.definition;
            out.write(output);
        } catch (NotFoundWordException ex) {
            out.write("-1");
        }
        return;

    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet 方法。单击左侧的 + 号以编缉代码。">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     */
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     */
    public String getServletInfo() {
        return "Short description";
    }
    // </editor-fold>
}