Binding a single checkbox to a form bean
We are using xml compliant JSP so it is a bit verbose 
. The trick is to add a hidden input tag prefixed with an underscore. Since the browser does not return anything for an unchecked chekbox this way Spring can determine that a checkbox was set to false.
<spring:bind path="acceptDeliveryConditions"> <input type="hidden" name="_${status.expression}"/> <c:choose> <c:when test="${status.value == true}"> <input type="checkbox" name="${status.expression}" checked="checked"/> </c:when> <c:otherwise> <input type="checkbox" name="${status.expression}"/> </c:otherwise> </c:choose> </spring:bind>
Binding a multiple checkboxes to an array property of a form bean
The form contains a List named types. These are pojos that have a checked attribute. Spring sets this property after the form is submitted. In the form processing code these checked properties can be read and acted on.
<c:forEach items="${form.types}" var="type" varStatus="loopStatus"> <spring:bind path="types[${loopStatus.index - 1}].checked"> ${status.errorCode} <input type="hidden" name="_${status.expression}"/> <c:choose> <c:when test="${status.value}"> <input type="checkbox" name="${status.expression}" value="true" checked="checked"/> </c:when> <c:otherwise> <input type="checkbox" name="${status.expression}" value="true"/> </c:otherwise> </c:choose> </spring:bind> </c:forEach>