Hi Dillard, Thank you very much for your advice. The problem is solved already. This week I will be refactoring project using Servlets and for sure I will have further questions :)
BR Rafal Dnia 21-12-2009 o godz. 16:29 Dillard Derek napisał(a): > Hi Rafal, > You may need to provide more information on your problem, but this is > how I see it... > > From what you've provided, it looks like your form takes only one > person's name (first, surname), etc and then the form is submitted. If > that is the case, then I'm assumin you expect each html form submission > to call a jsp which will set values for a Person object, and then add > that Person object to an List. > > The problem with your code is that your List changes each time the form > is submitted. What I mean is, each time result.jsp is generated, it > generates a new List object. This is because when you create a variable > in a scriptlet (anything beteen <% and %>), the variable is local to the > _jspService method that is run in a separate thread for each request. So > this variable is re-initialized for every request. This is why you only > get the last record in your List. It is only holding one Person object > at a time. > > If you want your List retain the Objects you've previously created, you > could declare the List object like this: <%! List list = new ArrayList() > %> (note the exclamation in the declaration) and then use it in your > scriptlet. Keep in mind that this is not thread safe, but should work > for your purposes. > > HTH. > -d. > > -----Original Message----- > From: java-ee-j2ee-programming-with-passion@googlegroups.com > [mailto:java-ee-j2ee-programming-with-pass...@googlegroups.com] On > Behalf Of Rafal Laczek > Sent: Sunday, December 20, 2009 9:22 AM > To: Java EE (J2EE) Programming with Passion! > Subject: [java ee programming] JSP/Arraylist > > Hi, > My form.html is following: > <form action="result.jsp" method="get"> > <p>First name <input type="text" name="firstName" /></p> > <p>Surname <input type="text" name="surname" /></p> > Male<input type="radio" name="sex" value="male" /> > Female<input type="radio" name="sex" value="female" /><br> > Preferable country to live <select name="countryType"> > <option value="poland">Poland</option> > <option value="norway" selected>Norway</option> > <option value="hungary">Hungary</option> > <option value="vietnam">Vietnam</option> > <option value="uk">UK</option> > <option value="france">France</option> > </select> > <p><input type="submit" /></p> > </form> > > And code in result.jsp is: > Person person1 = new Person(); > person1.setFirstName(request.getParameter("firstName")); > person1.setSurname(request.getParameter("surname")); > person1.setSex(request.getParameter("sex")); > person1.setCountryType(request.getParameter("countryType")); > > List list = new ArrayList(); > > list.add(person1); > > //out.println("Arraylist has " +list.size()+ " objects"); > > for (Iterator it = list.iterator(); it.hasNext();){ > Person person =(Person)it.next(); > out.println(person.getFirstName()); > out.println(person.getSurname()); > out.println(person.getSex()); > out.println(person.countryType()); > } > Unfor > tunately it seems that only last record inserted in form.html is added > to the list as the result.jsp displays only this last record. > Can you help me please. > > Best regards, > Rafal Laczek > > ---------------------------------------------------- > Pozbieraj treści ze swoich ulubionych stron w jednym miejscu! > I napisz koniecznie, czy ci się spodobało! > Internet od nowa: > http://klik.wp.pl/?adr=http%3A%2F%2Fpozbierane.pl&sid=932 > > > -- > You received this message because you are subscribed to the Google > Groups "Java EE (J2EE) Programming with Passion!" group. > To post to this group, send email to > java-ee-j2ee-programming-with-passion@googlegroups.com > To unsubscribe from this group, send email to > java-ee-j2ee-programming-with-passion+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/java-ee-j2ee-programming-with-passion?hl=en?hl=en ---------------------------------------------------- Zainwestuj pieniądze w nieruchomości w górach. Sprawdź najnowsze oferty w Zakopanem i okolicach - Kliknij: http://klik.wp.pl/?adr=www.bachledanieruchomosci.pl&sid=934 -- You received this message because you are subscribed to the Google Groups "Java EE (J2EE) Programming with Passion!" group. To post to this group, send email to java-ee-j2ee-programming-with-passion@googlegroups.com To unsubscribe from this group, send email to java-ee-j2ee-programming-with-passion+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/java-ee-j2ee-programming-with-passion?hl=en?hl=en
