spring mvc convert from string to currency

[gianluca gian]

Hi, I have been looking a lot around the net, to solve my problem, but actually I feel like to be very far from solution. I have a jsp page where the user can insert a monetary value, then when the page is submitted the string should be converted in a BigDecimal value. At the beginning I had on jsp a dojo component:

					<div class="span-4">
						<label for="currency">currency:</label>
					</div>
					<div class="span-7 last">
						<p><form:input path="currency" maxlength="40"/></p>
						<script type="text/javascript">

								Spring.addDecoration(new Spring.ElementDecoration({
									elementId : "currency",
									widgetType : "dijit.form.NumberTextBox",
									widgetAttrs : { required : true, constraints:{min:0,max:90000000,places:0}, invalidMessage:'Currency not valid'}
									
								}));
							
						</script>

and on a pojo I had just private BigDecimal currency; with set and get. I liked that situation because looked simple and I could validate currency right on client side. That solution was fine except with decimal numeric since I needed currency with comma decimal separator. So I had substituted the NumberTextBox with the following:

						<script type="text/javascript">

								Spring.addDecoration(new Spring.ElementDecoration({
									elementId : "importo",
									widgetType : "dijit.form.ValidationTextBox",
									widgetAttrs : { required : true }
									
								}));
							
						</script>

with this kind of dojo component I could not validate currency on client side. On server side on the pojo property I did:

	@NumberFormat(style=Style.CURRENCY)
	public BigDecimal getCurrency() {
		return currency;
	}

This solution was fine on page submit, but then on the cancel submit of the following page to the page with currency inserted by the user, an exception was thrown TypeMismatchException. Could you please suggest me a best way to validate a currency (with decimal character and comma separator) user text field and to convert it in a BigDecimal variable? Thank you

[gianluca gian]

Right now I'm trying, on the client side:

   <script type="text/javascript">  
  
                                Spring.addDecoration(new Spring.ElementDecoration({  
                                    elementId : "currency",  
                                    widgetType : "dijit.form.ValidationTextBox",  
                                    widgetAttrs : { required : true }  
                                      
                                }));  
                              
                        </script> 

and on the server side I have on my pojo:

	@NotNull
	@Digits(fraction = 2, integer = 3, message="some error message")
	public BigDecimal getCurrency() {
		return currency;
	}

but if I insert from client side the number: 10,44 with comma separator I got the exception typeMismatch!

[gianluca gian]

another solution that I have been trying is with converter. I defined a converter like this:

public class StringToBigDecimalConverter implements Converter<String, BigDecimal>{

	@Override
	public BigDecimal convert(String source) {
		
		BigDecimal sourceBigD = FormatUtility.convertStringToBigDecimal(source);
		
		if(sourceBigD==null) throw new NumberFormatException("some message");

		return sourceBigD;
	}

}

where FormatUtility.convertStringToBigDecimal is an utility method that converts numeric strings like 23232,98 to BigDecimal. On spring configuration file I wrote:
<mvc:annotation-driven conversion-service="conversionService"/> <bean id="conversionService" class="org.springframework.context.support.ConversionServiceFactoryBean"> <property name="converters"> <list> <bean class=".....StringToBigDecimalConverter"/> </list> </property> </bean>

but when I submit the form the converter is not called. I thought that the above configuration would be enough to trigger the convert automatically. Thanks, bye