Accessing Java string array elements into JSP

Question

I am developing a web application. I have a java class which has array of type String. In the same package, I have .jsp page which handles UI. I want to show contents of java String array into jsp's select tag.

<select>
   <option>_____</option>
</select>

How do I populate this select box with Java String array?

I tried importing that java class into my jsp so that I will be able to access array element. but it is not working — Saurabh Deshpande, Sep 05 '13 at 04:55
@Saurabh can you please give some code what you have tried so that we can understand your problem — Ashish Jagtap, Sep 05 '13 at 04:58

score 2 · Answer 1 · answered Sep 05 '13 at 04:58

Iterate over the loop with for-each loop.

With Expression Language,It looks like,

   <select name="item">   
       <c:forEach items="${itemsArray}" var="eachItem">   
            <option value="${eachItem}">${eachItem}></option>   
       </c:forEach>   
   </select>

score 0 · Answer 2 · answered Sep 05 '13 at 04:56

0

you can use <c:foREach> tag .

<select>
   <c:forEach var="option" items="${requestScope.array}">
       <option>${option}</option>
   </c:forEach>
</select>

Here is sample code

answered Sep 05 '13 at 04:56

Prabhaker A

8,317
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Ok.. I am seeing an empty select box. In **requestScope.array** do I need to make any changes? Or in **${option}** should I change anything? – Saurabh Deshpande Sep 05 '13 at 06:14
you need to keep the values as request attribute named `array` from your servlet. – Prabhaker A Sep 05 '13 at 06:18
I don't think servlet is interfering here. I have a simple core java class which has String array, the content of which I want to display in jsp select tag. – Saurabh Deshpande Sep 05 '13 at 06:28

score 0 · Answer 3 · answered Sep 05 '13 at 04:59

0

Use JSTL in JSP and the code will be much cleaner:

<html:select property="yourPropName">
<html:options name="yourDataList" />
</html:select>

answered Sep 05 '13 at 04:59

Alex

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this DataList is nothing but string array elements which I want to show in select – Saurabh Deshpande Sep 05 '13 at 05:01
@Saurabh Deshpande yourDataList is your array string or List from the request or session. It's name of request or session attribute where you put your array. – Alex Sep 05 '13 at 05:03

score 0 · Answer 4 · answered Sep 05 '13 at 05:01

0

Have you tried with POJO class. and access it from jsp like below.

<select>
<% String[] pojoObj= (String)request.getAttribute("data");
for (String str: pojoObj ){
%>
<option><%=str%></option>
<%}%>
</select>

answered Sep 05 '13 at 05:01

Pradip

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[Sorry, a big NO to scriplets](http://stackoverflow.com/questions/3177733/how-to-avoid-java-code-in-jsp-files), Recommending scriplets is highly discouraged. – Suresh Atta Sep 05 '13 at 05:01
This link may help you to understand why to avoid scriptlets in jsp . http://thewebplant.com/why-no-scripts-should-be-written-in-jsps-java/ – Prabhaker A Sep 05 '13 at 05:06

score -1 · Answer 5 · answered Sep 05 '13 at 05:19

-1

read the elements of the array in a loop and then print it inside the loop

<select> 
<%
for(int i=0; i<arr.size(); i++){
<option value="<%= arr[i]%>"><%= arr[i]%></option>
} 
%>
</select>

answered Sep 05 '13 at 05:19

anonymous

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it says arr cannot be resolve. I already imported class in jsp. – Saurabh Deshpande Sep 05 '13 at 05:38
in place of arr u have to write the name of your array object – anonymous Sep 05 '13 at 06:16
@anonymous - I did that.. then itself it is saying cannot resolved – Saurabh Deshpande Sep 05 '13 at 06:31

Accessing Java string array elements into JSP

5 Answers5