This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
http://struts.apache.org/2.x/docs/textfield.html has the list of parameters for a textfield tag. requiredposition might be what you are looking for. The documentation says it will "Define required position of required form element (left|right)" but I have no idea if that means where the text elemnt is on the page or where the text is inside the text box.