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javajspstruts2ognlstruts-tags

Calculation with <s:property /> values in Struts2

I have the following code:

<s:property value="currentPrice" />
<s:property value="oldPrice" />
<span class="badge">-50%</span>

Now I want to display the percentage in the <span> tag by the formula:

percentage = (currentPrice - oldPrice) / oldPrice * 100

How can I do that in Struts2 ?

Solution

  • Client side solution:

    <s:property value="currentPrice" />
<s:property value="oldPrice" />
<span class="badge">
    <s:property value="%{((currentPrice - oldPrice) / oldPrice) * 100}" />%
</span>

    Or in alternative,

    Server side solution:

    public Integer getPercentage(){
    return ((currentPrice - oldPrice) / oldPrice) * 100;
}

    <s:property value="currentPrice" />
<s:property value="oldPrice" />
<span class="badge">
    <s:property value="percentage" />%
</span>