Spring MVC - bind form elements to a List<Long>

Is it possible to bind a form element to a List<Long>开发者_开发百科?

ie. <form:input path="formValues[0]" /> binding to an element in List<Long> formValues; in the form backing object?

When I try this, it fails because Long does not have a default constructor new Long().

I've worked around it by creating a dummy holder class

class DummyLong {
    private Long value;
    ...
}

making the list in the formbacking object a List<DummyLong> and changing the form tag to <form:input path="formValues[0].value" /> but this seems unnecessarily hideous and I'm sure there must be a better way. Haven't been able to find it though.

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Use List<Long> formValues with <form:input path="formValues" />