hmm... I did through eclipse... On Oct 8, 3:11 am, Arnold <[email protected]> wrote: > May be try restarting the development mode server. > > On Oct 7, 8:42 pm, x_maras <[email protected]> wrote: > > > > > Hi, > > > I was trying to do some simple JDO queries in order to find my way in > > java google app engine. > > I have an persistent object where I store information about users, > > called UserData > > I also have made a class DAO where I have methods for creating new > > users for checking if a user exist and to show data for users. > > I created 2 records successfully but I can't read them. > > The error that I get is > > HTTP ERROR 500 > > > Problem accessing /. Reason: > > > com.awt.oat.dao.UserDao.showUserData()V > > Caused by: > > > java.lang.NoSuchMethodError: com.awt.oat.dao.UserDao.showUserData()V > > at org.apache.jsp.auction_jsp._jspService(auction_jsp.java:89) > > at > > org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94) > > .... > > .... and a lot more > > .... > > > I'm sure that I 'm doing something really stupid. Please someone to > > help me... > > > Here is my DAO class code: > > > package com.awt.oat.dao; > > > import javax.jdo.PersistenceManager; > > import com.awt.oat.PMF; > > import com.awt.oat.model.UserData; > > import com.google.appengine.api.users.User; > > import javax.jdo.Query; > > import java.util.List; > > import java.util.Date; > > import javax.jdo.JDOObjectNotFoundException; > > > public class UserDao { > > public void createUser(String uniqueID, String userName, String > > email) > > { > > Date date = new Date(); > > UserData newUser = new UserData(uniqueID, userName, email, > > date); > > > PersistenceManager pm = PMF.get().getPersistenceManager(); > > try { > > pm.makePersistent(newUser); > > }finally { > > pm.close(); > > } > > } > > > public void showUserData(){ > > > PersistenceManager pm = PMF.get().getPersistenceManager(); > > Query query = pm.newQuery(UserData.class); > > > try{ > > List<UserData> results = (List<UserData>)query.execute(); > > > if (results.iterator().hasNext()) { > > for(UserData u : results){ > > System.out.println("<table border='1'>" + > > "<tr><td>username</td><td>" > > + u.getUserName() + "</tr>" > > + "<tr><td>email</td><td>" > > + u.getEmail() + "</td></tr></ > > table>"); > > } > > } else { > > System.out.printf("<p>No results in the > > datastore</p>"); > > } > > }finally{ > > query.closeAll(); > > } > > } > > > } > > > and here my jsp file > > > <%@ page contentType="text/html;charset=UTF-8" language="java" %> > > <%@ page import="java.util.List" %> > > <%@ page import="javax.jdo.PersistenceManager" %> > > <%@ page import="com.google.appengine.api.users.User" %> > > <%@ page import="com.google.appengine.api.users.UserService" %> > > <%@ page import="com.google.appengine.api.users.UserServiceFactory" %> > > <%@ page import="com.awt.oat.dao.UserDao" %> > > <%@ page import="java.io.*" %> > > > <html> > > <head> > > <link type="text/css" rel="stylesheet" href="/stylesheets/ > > main.css" /> > > </head> > > <body> > > <% > > UserService userService = UserServiceFactory.getUserService(); > > User user = userService.getCurrentUser(); > > if (user != null) { > > %> > > <p>Hello, <%= user.getNickname() %>! (You can > > <a href="<%= userService.createLogoutURL(request.getRequestURI()) > > %>">sign out</a>.)</p> > > <% > > } else { > > %> > > <a href="<%= userService.createLoginURL(request.getRequestURI()) > > %>">Sign in</a> > > <% > > } > > UserDao dao = new UserDao(); > > //dao.createUser(user.getUserId(), user.getNickname(), > > user.getEmail()); this one works creates new users in the database > > dao.showUserData(); //this gives me error > > %> > > </body> > > </html>
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