Struts Drop-Down List

Could someone let me know where I could have the code for my Drop Down List....I know this shud be in action class...but, i am little confused when this get invoked and how it the drop-down list gets populated before callling the action class in the JSP page....
Thanks in advance for any help in this....

see the following post for the sample code I have posted.
http://forum.java.sun.com/thread.jspa?threadID=768195&tstart=0
what you need to is call the Action class first and put the ArrayList of LabelValueBeans in either session or request scope as shown in the code and forward to JSP ( copy code for JSP from my post in the above link)
does it answer your question ?

Similar Messages

How to populate page drop-down list in Struts from action?

I have following mockup JSP:
<td colspan="2" height="28"> <font size="2">
        <html:select property="sj">
           <html:option value="allj">aaa,1,str1</html:option>
         </html:select>
                    </font>
                  </td>
...Struts action will prepare results as String[] array e.g.:
aaa,1,str1
aaa,2,str2
aaa1,1,str3
aaa1,b,str4
and I have to show this in the page as a drop-down list of values that are represented in this String[] array returned from Struts action.
Should action return result array in original ActionForm submitted to the action by this page or should it just put the array into request or session? I need an example if possible
Many thanks,

Hi,
In ur Action Class create aa ArrayList of LabelValueBean Object (use import org.apache.struts.util.LabelValueBean; )
Eg:
ArrayList myList = new ArrayList();
for( int i=0; i<10 ; i++ )
   myList.add( new LabelValueBean( "Label of "+ i , " value of " +i ) );
}put myList either in request or session
eg
session.setAttribute( "DisplayList", myList );****************************************************************
in JSP use JSTL Tags for JSP
eg
<html-el:select property="listToDisplay" style="width=200" size="1">
<html-el:option value="-1">--Select One--</html-el:option>
<html-el:options collection="DisplayList" property="value" labelProperty="label" />
</html-el:select>Here "DisplayList" will be ref'ed from session scope or request scope.
Hope this can solve ur Doubt.
Ganesh

Controlling drop down list in struts

Hi there!
I 've a form whereby in the form, I've 2 drop down list and data displayed in the second drop down list is depending on the data selected from the first drop down list. Both data are read from database.
After finished selected the selection from both drop down list then I'll submitt the button.(Save, Update etc ).
I used DispactAction to take control the buttons.
My Question is how to do it.
Any help pretty much appreciated. Thanks.

Hi,
In ur Action Class create aa ArrayList of LabelValueBean Object (use import org.apache.struts.util.LabelValueBean; )
Eg:
ArrayList myList = new ArrayList();
for( int i=0; i<10 ; i++ )
myList.add( new LabelValueBean( "Label of "+ i , " value of " +i ) );
}put myList either in request or session
eg
session.setAttribute( "DisplayList", myList );****************************************************************
in JSP use JSTL Tags for JSP
eg
<html-el:select property="listToDisplay" style="width=200" size="1">
<html-el:option value="-1">--Select One--</html-el:option>
<html-el:options collection="DisplayList" property="value" labelProperty="label" />
</html-el:select>Here "DisplayList" will be ref'ed from session scope or request scope.
Hope this can solve ur Doubt.
Ganesh

Error while populating drop down list with values from a database

Hi all,
I have a JSP page with a drop down list that is to be populated with values from a database.
This is the code in my JSP file:
     
         
         <% ArrayList<Integer> floornumbers = dataManager.getAllFloorNumbers();
            Iterator<Integer> iterator = floornumbers.iterator(); %>
         
         <form id="floorselectionform">
              <input type="hidden" name="action" value="floorselected"/> 
              Select floor | <select name="floorselector" id="floorselector">
                   <% while (iterator.hasNext()) { %>
                   <option value="<%=iterator.next().intValue()%>"> <%=iterator.next().intValue()%> </option>
                   <% } %>
              </select>
              <input type="submit" value="Go!"/>
         </form>   The DataManager.java class simply forwards this to its respective Peer class, which has the code shown below:
      package seatplanner.model;
    import java.sql.Connection;
    import java.sql.ResultSet;
    import java.sql.SQLException;
    import java.sql.Statement;
    import java.util.ArrayList;
    /* This class handles all floor operations */
     public class FloorPeer
     /* This method returns all the floor numbers */
     public static ArrayList<Integer> getAllFloorNumbers(DataManager dataManager) {
        ArrayList<Integer> floornumbers = new ArrayList<Integer>();
        Connection connection = dataManager.getConnection();
        if (connection != null) {
          try {
            Statement s = connection.createStatement();
            String sql = "select ID from floor order by ID asc";
            try {
              ResultSet rs = s.executeQuery(sql);
              try {
                while (rs.next()) {
                  floornumbers.add(rs.getInt(1));
              finally { rs.close(); }
            finally {s.close(); }
          catch (SQLException e) {
            System.out.println("Could not get floor numbers: " + e.getMessage());
          finally {
            dataManager.putConnection(connection);
        return floornumbers;
     } The classes compile properly, but when I load this page up in Tomcat it just freezes and does not load the form. I tested the DB connection and it works fine.
What am I doing wrong in the JSP code?
Thanks for the help in advance.
UPDATE: I commented out the form, and added <%=floornumbers.size()%> right above the commented code to check if the ArrayList is indeed getting populated with the values from the database (the values are of type integer in the database). The page still freezes like before. I'm puzzled now :confused: .

Wrong usage of Iterator.

         
         <% ArrayList<Integer> floornumbers = dataManager.getAllFloorNumbers();
            Iterator<Integer> iterator = floornumbers.iterator(); %>
         
         <form id="floorselectionform">
              <input type="hidden" name="action" value="floorselected"/> 
              Select floor | <select name="floorselector" id="floorselector">
                   <% while (iterator.hasNext()) {
                                Integer inte = iterator.next();
                        %>
                   <option value="<%=inte.intValue()%>"><%=inte.intValue()%></option>
                   <% } %>
              </select>
              <input type="submit" value="Go!"/>
         </form>or make use of enhanced loop as you are already using J2SE 5.0+ for avoiding confusions.

         
         <% ArrayList<Integer> floornumbers = dataManager.getAllFloorNumbers(); %>
         
         <form id="floorselectionform">
              <input type="hidden" name="action" value="floorselected"/> 
              Select floor | <select name="floorselector" id="floorselector">
                   <% for(Integer inte:floornumbers) {%>
                   <option value="<%=inte.intValue()%>"><%=inte.intValue()%></option>
                   <%}%>
              </select>
              <input type="submit" value="Go!"/>
         </form>and a lot better thing would be making usage of basic Taglib provided with JSTL spec or struts spec which make life easier and simple.
something like usage of <c:forEach/> or <logic:iterate/> would be lot better without writing a single scriptlet code.
Hope that might help :)
REGARDS,
RaHuL

Drop Down list issues in jsp

Hi,
I am facing an issue with drop down list in jsp pages on page postback. Let me explain in detail. I have a client.jsp page which has a drop down list and a text box. The drop down list is populated from an Action class (lets say testAction.java). In the client action form class there is a validation which requires the user to enter some value in the text box.
So here is the problem, when the client.jsp page loads, the drop down list is populated perfectly, but then the user clicks submit button without entering anything in the textbox, the page loads again with an error message ("Please enter some value in the textbox"). At this point the drop down list does not contain any value. Any ideas what could I do?
I am posting the code here for individual pieces,
Struts-config.xml_
<action path="/client" type="com.myapp.struts.testAction" scope="session">
<forward name="success" path="/createClient.jsp"/>
</action>
<action input="/createClient.jsp" name="ClientActionForm" path="/createClient" scope="session" type="com.myapp.struts.ClientAction">
<set-property property="cancellable" value="true" />
<forward name="success" path="/loginSuccessful.jsp"/>
<forward name="cancel" path="/Welcome.do"/>
</action>
index.jsp_
<h5><html:link action="/client" styleClass="purplelink">Create a new client</html:link></h5>
testAction.java_
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
ArrayList<String> arrList = new ArrayList<String>();
arrList.add("sports");
arrList.add("music");
arrList.add("test 1");
arrList.add("test2");
request.setAttribute("mylist", arrList);
return mapping.findForward(SUCCESS);
createClient.jsp_
<select name="droplist">
<c:forEach var="itemName" items="${mylist}">
<option><c:out value="${itemName}" /></option>
</c:forEach>
</select>
<html:text property="clientName" />
ClientActionForm_
public ActionErrors validate(ActionMapping mapping, HttpServletRequest request)
ActionErrors errors = new ActionErrors();
if (getclientName() == null || getclientName().length() < 1) {
errors.add("name", new ActionMessage("error.name.required"));
return errors;
Here is the process/page flow.
index.jsp is the first page which is loaded.
Link on index.jsp calls action="/client"
This pulls mapping from struts-config and calls testAction.java
This populates the arraylist and returns to the createClient.jsp page (mapping from struts-config.xml)
Now createClient.jsp page has two fields (dropdown list and textfield=clientName) and a submit button
if user clicks submit, clientActionForm is called and does not enter anything into clientName text field, error message is returned.
At this point, the drop down list in createClient.jsp is not populated and is returned as empty, even though the scope=session in struts-config.xml
Please provide some inputs on how can I handle this issue.
Thanks
Ashish

I think one solution would be instead of putting the list in the request, but it in your ActionForm.
Add a field to the ClientActionForm with getters and setters.
Then change your action.
ArrayList<String> arrList = new ArrayList<String>();
arrList.add("sports");
arrList.add("music");
arrList.add("test 1");
arrList.add("test2");
ClientActionForm frm = (ClientActionForm)form;
frm.setMyList(arrList);
return mapping.findForward(SUCCESS);

Please help: Populating values in drop down list by onchange - javascript !

I am working on a task - I need to populate drop down named "year" dynamically (from database) depending upon the select of an element from drop down list "carLine" . I am calling javascript funtion on onchange event of the html select and setting property of the selected element.The environment is Struts and dynaactionform is being used . Here is the my html select for both the drop down list s and javascript funtion to set value. The getYears method is defined in the locatoraction action class. But after doing all these carLine is not getting populated with the values corresponding to selected carline.
Database side is working fine .
<script type="text/javascript">
function getYearsForCarline(){
document.getElementById('method').value = 'getYears';
document.forms[0].submit();
alert("submitted");
</script>
<html:form styleId="locatorForm" action="/locator/locatorAction" method="post">
          <input type="hidden" name="method" value="getYears" />
          <tr>
               <td align="center">
               <table border="0" width="300" cellpadding="0" cellspacing="5">
                    <tr>
                         <td><span class="formLabelEM"><bean:message
                              key="label.locator.carLine" />*</span>
                         <html:select styleId="carLineBox" property="carLine" onchange="javascript:getYearsForCarline()">
                              <html:option value="">Select a Carline</html:option>
                              <html:optionsCollection property="carLines" />
                         </html:select></td>
                    </tr>
                    <tr>
                         <td><span class="formLabelEM"><bean:message
                              key="label.locator.modelYear" />*</span>
                         <html:select property="year" >
                         <html:option value="">Select Year</html:option>
                              <html:optionsCollection property="years" />
Any advise will be highly appreciated . Thanks in advance.

Thanks both of you for the advise ! My code worked perfectly fine after adding separate action mapping for Year and using that as action in the form though the new action mapping point to the same action class locatorAction ..I still do not understand the reason behind this exactly(any suggestion are most welcome) but it works. Here is code for my action mapping :
<action path="/locator/locatorYearAction" name="locatorForm"
               input="/locator/locatorMain.jsp"
               type="com.apps.sales.web.salesin.actions.LocatorAction"
               parameter="method" validate="true">
               <forward name="showCarlines" path="/locator/locatorMain.jsp"
                    redirect="false" />
               <forward name="showModels" path="/locator/locatorModels.jsp"
                    redirect="false" />
          </action>

Can we configure textbox, button or drop down list..

Hi,
I am using struts + hibernate for my project. Still requirement is not clear. every time they are giving me new requirement for my web page designing and I am doing.
I want to know Is there any facility in Jsp/html/struts that.. I can define some text box , button, dropdown list in any file with name. so I have to call only name in my jsp page and it can add one more text box, button or dropdown list acording requirement..
suppose now I have 4 fields. in future if i want to add 4-5 fields more then I need not change to my jsp page. I have to change only my configure file..
some one told me it is possible using dynamic struts but I am not avail :((
any other suggestion also welcome. pls help me..its consuming my lot of time..

Hi,
I am using MVC frameworks with struts. In Struts, we can define fields name in ApplicationResources.properties file. same thing I would like to add for my fields like text box, button, drop down list mean I define my dropdown list with list value and I can call it to by its name which i define in any properties file. is it possible in struts?

Cteate 2 Dynamic drop down list

Hi all
i want to create 2 dynamic drop down list using struts and hibernate
i want the first one to display countries name then if i select a country name the second drop down list will automatic display the country cities .
i'm using database here and my tables like that :-
country table
country_id number(3) pk
country_name varchar(50)
city table
city_id number(5) pk
country_id(3) fk references country(country_id)
city_name varchar(50)
thank you in advance

Hi Omar,
I have solution for you
To populating or refreshing the lists you can use
two procedures:
One of them - generic, which can be used for all types of list
Another is specific which contain a SQL statement to retrieve the data for
particular list.
1. Specific procedure:
PROCEDURE GET_DEPARTMENT_LIST
IS
sql_stat VARCHAR2(32767);
ret_code NUMBER;
BEGIN
-- SQL Statement for Drop-down List
-- (must have two columns for label and value - both VARCHAR2)
sql_stat := ' SELECT DEPARTMENT_NAME,TO_CHAR(DEPT_ID)'
||' FROM SCHEMA.DEPARTMENT';
POPULATE_MY_LIST('BLOCK.DEPARTMENT_LIST',sql_stat,ret_code);
END;
2. Generic procedure:
PROCEDURE POPULATE_MY_LIST
(item_name VARCHAR2,
sql_stat VARCHAR2,
out_code OUT NUMBER)
IS
rg_id RECORDGROUP;
rg_name VARCHAR2(100);
ret_code NUMBER;
item_id ITEM;
BEGIN
     item_id := FIND_ITEM(item_name);
     IF ID_NULL(item_id) THEN
          out_code := -1;
          RETURN;
     END IF;
     --Creating Record Group with Unique Name
     rg_name := 'RG_'||SUBSTR(item_name,INSTR(item_name,'.',1)+1,LENGTH(item_name));
     --Checking Record Group Name for existance
     rg_id := FIND_GROUP(rg_name);
     --If Group does exist - delete it
     IF NOT ID_NULL(rg_id) THEN
          DELETE_GROUP(rg_id);
     END IF;
     --Creating Record Group
     rg_id := CREATE_GROUP_FROM_QUERY(rg_name,sql_stat);
ret_code := POPULATE_GROUP(rg_id);
IF (ret_code <> 0) THEN
     out_code := ret_code;
     RETURN;
END IF;
POPULATE_LIST(item_name,rg_id);
IF NOT FORM_SUCCESS THEN
     out_code := -2;
     RETURN;
ELSE
out_code := 0;
END IF;
DELETE_GROUP(rg_id);
END;
Hope it help.
Dmitry

How do I use one drop down list to refresh the list in another drop down?

I am using a drop down list full of years (i.e. 2008, 2009..etc). When I make my selection from this drop down list (say for instance I select 2009) I want it to update the available data in the second drop down list. I have the query statement set up within the JSP page but it needs to be a dynamic SQL statement based off the value I selected in the first drop down.
String sql = "SELECT GameId, GameDescription FROM Games WHERE Year = " + year;
The variable "year" is the value I need to figure out how to assign. Now this variable is a Java variable (attribute) and Im unsure how to get the value from the previous drop down and assign it to that. Basically I need the JavaScript value from the first drop down assigned to the Java attribute "year".
Anyone able to help me with this???
Thanks,
Jed

Here are my two drop down lists. As you can see I build the second list dynamically based off the value of the year. I want to be able to assign my year to the value I select in this first drop down. How do I do that?? I only want to show games for the year I select. I currently have the year hardcoded to "2009" as you see below. How can i change that to be assigned to the JavaScript value i extract from the first select box?
<select name="season">
<option value='2009' selected>2009</option>
<option value='2008'>2008</option>
</select>
<select name="gameselect">
<%
try
String year = "2009";
String connectionURL = "jdbc:mysql://localhost:3306/ElmwoodExpos";
Class.forName("com.mysql.jdbc.Driver");
Connection con = DriverManager.getConnection(connectionURL, "root", "thejedster");
String sql = "SELECT GameId, GameDescription FROM Games WHERE Year = " + year;
Statement s = con.createStatement();
s.executeQuery(sql);
ResultSet rs = s.getResultSet();
while(rs.next())
%>
<option value="1"><% out.print(rs.getString("GameDescription"));%></option>
<%
catch(Exception e)
%>
</select>
Thanks,
Jed

Using a variable/drop down list in header of planning layout

Dear all,
I have created a simple BPS application for purely GL planning (No CO related objects like cost centre involved). I have the following characteristics in the header of the manuel planning layout.
Business area
Chart of accounts
Company code
Currency
Currency Type
Fiscal year
Fiscal Year Variant
Fiscal year/period
Value type
Version
I have created variables for Business area, Fiscal Year, Fiscal Year Period, Posting Period and Version. The client wants either a variable or a drop down list for these characteristics in the header in the web application. When I assign a variable and put the characteristic in header, I get the error message in the web application saying header characteristic can only have a fixed value. Can someone tell me if it is possible and if so than how? I'll be very grateful for any inputs. Thanks a lot.
Regards,
Sumit

Hi,
When you create a variable, assign some values to the variable. These then become available in the drop down box. Ths first time a Web interface is called, these variable values are initial.As a result, u get the error messages. Select the variable values and then the error message should go away.
Thanks,
-NS

Unable to capture data from drop down list in custom added field in migo tcode at item level

Hi guys,
need bit help in resolving query related to custom added field in Tcode migo.
i have added a field in migo at item level ,in this i have used drop down list
to get data but unable to capture data from drop down list.gown through
many blogs in scn but unable to resolve.
Please help me out in this.
Thanks,
Umakant.

Hi,
U can use following code to fill the list box
write this code in PBO
In layout editor please select listbox in dropdown attribute of input field and put some fctcode attribute
TYPE-POOLS vrm.
DATA values TYPE vrm_values WITH HEADER LINE.
TABLES: <ur custom Database table>.
clear values, values[].
SELECT * FROM <ur custom Database table>.
    values-text = <TABLE FIELD TO DISPLAY IN DROPDOWN> .
    values-key = <TABLE KEY FIELD TO DISPLAY IN DROPDOWN>.
    APPEND values.
ENDSELECT.
CALL FUNCTION 'VRM_SET_VALUES'
    EXPORTING
      id              = '<SCREEN INPUT FIELD NAME>'
      values          = values[]
    EXCEPTIONS
      id_illegal_name = 1
      OTHERS          = 2.
Also please define the following before accessing the listbox value
data: <listbox input field name> type <table field name>,
        <inputfield name where text to display> type string in top include
In PAI, select the text from the table into <inputfield name where text to display> depending on value selected which will be called when enter key is pressed or any vale is selected

How do I restore an old Iphone 3gs backup if it does not appear in the "restore backup" drop-down list?

Hi
Last night I tried to install ios 6.1.2. The install failed. I tried again and this time it recommended restoring the phone - I agreed and it worked, but after the restore was completed, I could not get out of the set-up assistant screens on the phone. It kept saying either connect to Itunes, or connected to Itunes - there was no conclusion of the set-up process.
So again I chose to restore the phone - this time I got through the process and asked it to restore my last back up. It did so, but it turns out the back-up is empty. Looking at the time of the back-up, I think what happened is the phone synced while it was stuck in the set-up assistant, and the old backup with all my data was overwritten with a new empty back up.
If I use windows explorer I can see a back-up set from earlier in the evening that should contain all my data (6pm) but when I look in iTunes that backup set is not available for selection in the "restore back-up" drop down list. Perhaps its only a partially completed backup, but at 1.55gb it sure contains a lot of valuable data. How can I make iTunes see or use the 6pm backup set?

yes - sadly I think that's what happened. As the phone was connected, it was syncing and backing up automatically while I tried to complete the set-up process. So an empty back-up overwrote the full one. But the full back up is still there in the application data files - it must have done a back-up automatically before it restored the phone. So why can't I see it and use it in iTunes? Very frustrating!

Populate drop-down list from multiple text fields.

Just to begin, I am brand new to this application and brand new to coding in general. Anyways, this is what I am trying to accomplish. I need to populate a drop-down list from multiple text fields. I am able to populate one item using this in the calculate event:
TextField1.rawValue
After I type text in TextField1 and hit enter, it displays the text in the drop-down list. I need to do this but with more than just one text field to populate more options for the drop-down list. I will also need to do something similar with populating a drop-down list from selections made in multiple other drop-down lists.
Thanks for any help you can give me.

Thank you for your suggestion Geo Kaiser. With that, I was able to populate my drop-down lists, but now when I select an option from the drop-down list, the selection dissapears. The selection will appear briefly in the box but then dissapears although my drop-down list options remain there. Here is the code I am using for my text field to drop-down list:
DropDownList1.clearItems()
DropDownList1.addItem(TextField1)
DropDownList1.addItem(TextField2)
And here is my code for my drop-down list to populate another drop-down list:
DropDownList3.clearItems()
DropDownList3.addItem(DropDownList1)
DropDownList3.additem(DropDownList2)
Thanks again for your help. By the way, I am using Adobe Designer 7.0.

Drop-down List not function in preview mode.

Hi all,
LiveCycle 8.2.1.4029
I have created a drop-down list and populated it with a text
However when I preview the form, the drop-down is displayed without the dropdown arrow and the options (text) are not displayed.
The drop-down list is the only object on the form.
If I load a form or xpd of a form created prior today the drop-down list displays and functions as normal.
Any ideas.
Thanks
WowRonin

Hi,
I uninstalled and reinstalled Acrobat and then patched to 9.4 and everything is back to normal.
Go figure!!
Thanks for responding.
WowRonin

Displaying value only in Drop Down List

Greetings,
I have a drop down list with value:text as follows:
01:Daylight
02:Dusk
03:Dawn
04:Night
I would like to present the user who clicks on the drop down list with all of the literal text options (daylight, night, etc), but once selected, the object populate and print only the value (01, 02, etc).
I thought about resizing the object when the user clicks on it, and then resizing it back once selected, but this seems rather cumbersome. Space on the printed form is very limited, which is why the value/codes are used to represent the actual literal options.
Any methods or ideas would be greatly welcome
Thanks!
Brad

Here is a sample that shows what I think you want. I have a TextField that is displayed. When the user enters the field, I hide this field and make a DDlist available to the user. This DDList is placed behind the TextField and is hidden (not part of the layout) until the user enters the TextField. I also hide the TextField (this code is on the Enter event of the TextField). Now that the DDlist is visible you can set up a DDList to display one thing but report another. This is what I did (look at the binding tab of the DDList). Now when the user selects an item from the DDList the TextField is updated, the DDList is hidden and the TextField is made visisble, then the cursor is placed in the next field. This code is on the Exit event of the DDList.
Is this what you were trying to accomplish?
Paul

Struts Drop-Down List

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