illegal argument expression.

[cablepuff]

java.lang.IllegalArgumentException: Map key 'group_id' has value [3] that is not of expected type [class java.lang.Integer], instead it is of type [java.lang.String]

<input name="group_id" value="flowScope.group_id" type="int"/>

GroupFormAction.java

@Override
    protected Object createFormObject(RequestContext context) throws Exception
    {
        final Integer groupId = context.getFlowScope().getInteger("group_id");
        GroupCommand groupCommand = new GroupCommand();
        if (groupId == null)
            return groupCommand;
        Group group = this.groupService.getGroupById(groupId);
        groupCommand.setId(groupId);
        groupCommand.setGroupname(group.getAuthority());
        groupCommand.setActive(Boolean.valueOf(group.isActive()));
        return groupCommand;
    }

what is wrong? i thought [3] was an integer.

[wolfman22]

try using

type="integer" 

because "integer" is registered as alias in
org.springframework.binding.convert.servic.Default ConversionService