●プログラム・リスト●

package jp.tuyano;

import java.io.*;
import java.util.*;

import javax.jdo.*;
import javax.servlet.http.*;

@SuppressWarnings("serial")
public class FindDataServlet extends HttpServlet {
	public void doGet(HttpServletRequest req,
			HttpServletResponse resp)
			throws IOException {
		PersistenceManagerFactory factory = PMF.get();
		PersistenceManager manager = factory.getPersistenceManager();
		resp.setCharacterEncoding("UTF-8");
		resp.setContentType("text/html");
		req.setCharacterEncoding("utf-8");
		String param1 = req.getParameter("find");
		PrintWriter out = resp.getWriter();
		List<LinkData> list = null;
		Query query = manager.newQuery(LinkData.class);
	    query.setFilter("title == findTitle");
	    query.setOrdering("datetime desc");
	    query.declareParameters("String findTitle");
	    try {
	    	list = (List<LinkData>)query.execute(param1);
		} catch(JDOObjectNotFoundException e){}
		String res = "[";
		if (list != null){
			for(LinkData data:list){
				res += "{id:" + data.getId() + ",url:'" + data.getUrl() + "',title:'" +
					data.getTitle() + "',date:'" + data.getDatetime() +
					"',comment:'" + data.getComment() + "'},";
			}
		}
		res += "]";
		out.println(res);
		manager.close();
	}
}