validation problem for cost : struts2

[madhuri kunchala]

hi good morning,
in my application i had to do validation for cost i m doing server-side validations..i used regex for cost..but im not getting validated can any one help me out..here is the code

 
<field name="cost">
        <field-validator type="regex">
            <param name="expression"> ^\[0-9]+(\.\?[0-9]+)?$ </param>
            <message>Enter Valid Cost</message>
        </field-validator>
    </field>
   

[madhuri kunchala]

any help regarding my post

[kranthi chamarthi]

It will be helpful if you provide us with what values your "field to be validated" can take and what values it shouldn't.

[madhuri kunchala]

if i enter numbers it should take and also take decimal numbers such as '5,5.0,0.50' and if i enter alpha-numeric it should not take i had done the code change as follows

<field name="cost">
        <field-validator type="requiredstring">
            <message key="errors.number"/>
        </field-validator>
        <field-validator type="regex">
            <param name="expression">^\[0-9]+(\.\?[0-9]+)?$</param>
            <message key="errors.fieldFormat" />
        </field-validator>
    </field>    

errors.number---enter only number
can you suggest me how to change my code according to my need..

[madhuri kunchala]

i need is if i kept blank it should not throw error and also if i enter any thing other than numbers it should throw an error can any one suggest me how to do...

[Sridhar Santhanakrishnan]

How about this?

 [0-9]*\.?[0-9]+   

[madhuri kunchala]

hi,
i tried what you suggested but im not getting validated..here is my jsp code and validation.xml file

<tr>
                <td  >
                    <s:label for="cost"   value="Cost"/>
                </td>
                <td>
                    <s:textfield name="cost" id="cost" label="Cost " />
                </td>
                <td  >
                    <s:label for="rate"   value="Rating" id="rate"/>
                </td>
                <td>
                    <s:textfield name="rate" id="rate" label="Rating"/>
                </td>
            </tr>    

 <field name="cost">
        <field-validator type="requiredstring">
            <message key="errors.number"/>
        </field-validator>
        <field-validator type="regex">
            <param name="expression">[0-9]*\.?[0-9]+</param>
            <message key="errors.fieldFormat" />
        </field-validator>
    </field>
    <field name="rate">
        <field-validator type="requiredstring">
            <message key="errors.number"/>
        </field-validator>
        <field-validator type="int">
            <param name="min">1</param>
            <param name="max">10</param>
            <message key="errors.range"/>
        </field-validator>
    </field>   

[Sridhar Santhanakrishnan]

I meant just the regex part of the expression. Try

^[0-9]*\.?[0-9]+$

Any regex must start with ^ and end with a $.

[madhuri kunchala]

i didnt got your point..i tried using js..its working if i implement in struts2 in <field-validatio> im not getting.....i had done the same in reg ^[0-9]*\.?[0-9]+$
here is the code

<field name="cost">
        <field-validator type="requiredstring">
            <message key="errors.number"/>
        </field-validator>
        <field-validator type="regex">
            <param name="expression">^[0-9]*\.?[0-9]+$</param>
            <message key="errors.fieldFormat" />
        </field-validator>
    </field>

[madhuri kunchala]

hi,
any help regarding my post..i m not getting validated and if i left blank it should not throw an error..any help