Iterating over hashmap in JSP in struts application

Question

I have a HashMap object that I am getting on a JSP page.

HashMap<Integer,Gift_product> gift_hm = new HashMap<Integer,Gift_product>();
gift_hm.put(17,new Gift_product("doll",67));

Now I need to iterate this and display content on JSP. The Gift_product class contains two fields: name and price.

JSP output should be

serial no.           product name     price
17                    Doll            67

How can I achieve it?

Funny ... , I did not add the generics part in the source (I just reformatted into code) but the revision history seems to disagree in this? — rsp, Jun 15 '10 at 11:01
@rsp: sometimes generics are interpreted as html tags and cut out of the formatted output. Formatting the post correctly as code then makes them show up. Use "View source" on the revision to verify this. — Joachim Sauer, Jun 15 '10 at 11:16

krock · Accepted Answer · 2010-06-15T12:02:42.127

12

Check out the struts <logic:iterate> tag. When iterating over a HashMap, each entry is a java.util.Map.Entry, to get the key (in this example the serial number) and value (the Gift_product object) out use the key and value properties like this:

First set the HashSet as an attribute in your action class e.g. request.setAttribute("gift_hm", gift_hm); and then in the jsp:

<logic:iterate id="mapEntry" name="gift_hm">
  <bean:define id="gift" name="mapEntry" property="value">
  <tr>
    <td><bean:write name="mapEntry" property="key"></td>
    <td><bean:write name="gift" property="productName"></td>
    <td><bean:write name="gift" property="price"></td>
  </tr>
</logic:iterate>

edited Jun 15 '10 at 12:02

answered Jun 15 '10 at 10:59

krock

28,904
13
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85

is it directly get it serial no which is in key part, product name which is in value.getProdutname() and price value.getPrice()... not quite sure.. – Pedantic Jun 15 '10 at 11:32
I revised it to print the HashMap key (mapEntry.getKey) as the serial number and pull the Gift_product object out of mapEntry.getValue() – krock Jun 15 '10 at 12:05

score 5 · Answer 2 · answered Sep 04 '13 at 12:27

This one works for me (struts2):

<s:iterator value="giftMap" var="giftMapElement">
    <s:set var="giftKey" value="#giftMapElement.key"/>
    <s:set var="giftValue" value="#giftMapElement.value"/>
    <tr>
        <td><s:property value="#giftKey"/></td>
        <td><s:property value="#giftValue.productName"/></td>
        <td><s:property value="#giftValue.price"/></td>
    </tr>
</s:iterator>

score 2 · Answer 3 · answered Jul 29 '13 at 09:30

2

Solution
-----------
<s:iterator value="map">
  <h3><s:property value="key" /></h3>
  <table>
  <s:iterator value="value">
    <tr><td><s:property /></td></tr>
  </s:iterator>
  </table>
</s:iterator>

answered Jul 29 '13 at 09:30

user2564182

21
1

score 0 · Answer 4 · answered Apr 23 '18 at 10:36

<logic:iterate name="FormName" property="formProperty"
                            id="list" indexId="sno">
                    <tr>
                                <td><bean:write name="list" property="value.giftproductVariable" /></td>
                                <td><bean:write name="list" property="value.giftproductVariable" /></td>

                            </tr>
                        </logic:iterate>

Iterating over hashmap in JSP in struts application

4 Answers4

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