I've been reading books, the internet, this list, and experimenting, attempting to build a model for best practice for a wizard utilizing struts 1.1 and DynaValidatorAction. I've got a simple model working but validation does not work. In other words, the validator framework does not seem to be doing its thing. I've recently used DynaValidatorAction on single forms with great success. The other thing I am wondering about, assuming the Validator will validate, is once the code runs the Action, I'd like to be able to do secondary validation based on business logic. This means I would need to get the page number, and I am not sure I understand how this works. I have a hidden field on each form in the wizard for page. This presumably works in conjuction with the field page attribute in the validation config file. If someone can explain how I can complete this thing, I would be grateful. Also, maybe this example could be added to the struts website as I have to believe I am not the only one struggling with this.
Many thanks. Dean Hoover
Here are the files:
=== struts-config.xml ===
<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.0//EN" "http:/jakarta.apache.org/struts/dtds/struts-config_1_1.dtd">
<struts-config>
<form-beans>
<form-bean name="MyWizard"
type="org.apache.struts.validator.DynaValidatorForm">
<form-property name="x" type="java.lang.String"/>
<form-property name="y" type="java.lang.String"/>
<form-property name="z" type="java.lang.String"/><form-property name="method" type="java.lang.String"/> </form-bean>
</form-beans>
<action-mappings>
<action path="/mywizard1"
type="MyWizardAction"
name="MyWizard"
scope="session"
input="/mywizard1.jsp"
parameter="method"
validate="true"> <forward name="next" path="/mywizard2.jsp"/>
<forward name="cancel" path="/mywizardcancel.html"/>
</action> <action path="/mywizard2"
type="MyWizardAction"
name="MyWizard"
scope="session"
input="/mywizard2.jsp"
parameter="method"
validate="true"> <forward name="previous" path="/mywizard1.jsp"/>
<forward name="next" path="/mywizard3.jsp"/>
<forward name="cancel" path="/mywizardcancel.jsp"/>
</action> <action path="/mywizard3"
type="MyWizardAction"
name="MyWizard"
scope="session"
input="/mywizard3.jsp"
parameter="method"
validate="true"> <forward name="previous" path="/mywizard2.jsp"/>
<forward name="finish" path="/mywizarddone.jsp"/>
<forward name="cancel" path="/mywizardcancel.jsp"/>
</action></action-mappings>
<message-resources parameter="resources.application"/>
<plug-in className="org.apache.struts.validator.ValidatorPlugIn">
<set-property property="pathnames"
value="/WEB-INF/validator-rules.xml,
/WEB-INF/validation.xml"/>
</plug-in></struts-config>
=== validation.xml ===
<form-validation>
<formset>
<form name="MyWizard">
<!-- page 1 -->
<field property="x" page="1" depends="required"/> <!-- page 2 -->
<field property="y" page="2" depends="required"/><!-- page 3 -->
<field property="z" page="3" depends="required"/>
</form>
</formset>
</form-validation>
=== mywizard1.jsp ===
<%@ taglib uri="/tags/struts-bean" prefix="bean" %>
<%@ taglib uri="/tags/struts-html" prefix="html" %>
<html:html>
<body>
<h3>Page 1</h3>
<html:errors/>
<html:form method="post" action="/mywizard1.do">
<html:hidden property="page" value="1"/>
x = <html:text property="x"/>
<html:submit property="method"><bean:message key="button.next"/></html:submit>
<html:submit property="method"><bean:message key="button.cancel"/></html:submit>
</html:form>
</body>
</html:html>
=== mywizard2.jsp ===
<%@ taglib uri="/tags/struts-bean" prefix="bean" %>
<%@ taglib uri="/tags/struts-html" prefix="html" %>
<html:html>
<body>
<h3>Page 2</h3>
<html:errors/>
<html:form method="post" action="/mywizard2.do">
<html:hidden property="page" value="2"/>
y = <html:text property="y"/>
<html:submit property="method"><bean:message key="button.previous"/></html:submit>
<html:submit property="method"><bean:message key="button.next"/></html:submit>
<html:submit property="method"><bean:message key="button.cancel"/></html:submit>
</html:form>
</body>
</html:html>
=== mywizard3.jsp ===
<%@ taglib uri="/tags/struts-bean" prefix="bean" %>
<%@ taglib uri="/tags/struts-html" prefix="html" %>
<html:html>
<body>
<h3>Page 3</h3>
<html:errors/>
<html:form method="post" action="/mywizard3.do">
<html:hidden property="page" value="3"/>
z = <html:text property="z"/>
<html:submit property="method"><bean:message key="button.previous"/></html:submit>
<html:submit property="method"><bean:message key="button.finish"/></html:submit>
<html:submit property="method"><bean:message key="button.cancel"/></html:submit>
</html:form>
</body>
</html:html>
=== mywizarddone.jsp ===
<%@ taglib uri="/tags/struts-bean" prefix="bean" %>
<%@ taglib uri="/tags/struts-html" prefix="html" %>
<html:html>
<body>
x = <bean:write name="MyWizard" property="x"/><br/>
y = <bean:write name="MyWizard" property="y"/><br/>
z = <bean:write name="MyWizard" property="z"/><br/>
</body>
</html:html>
=== mywizardcanel.jsp ===
<html><body>CANCEL</body></html>
=== MyWizardAction.java ===
import java.util.*;
public class MyWizardAction extends LookupDispatchAction
{
protected Map getKeyMethodMap()
{
Map map = new HashMap();
map.put("button.next", "next");
map.put("button.previous", "previous");
map.put("button.finish", "finish");
map.put("button.cancel", "cancel");
return map;
} public ActionForward next
(
ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response
)
{
// passed the validator stuff, what if we wanted to do some
// business layer validation at this stage, based on 'page'? return mapping.findForward("next");
} public ActionForward previous
(
ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response
)
{
return mapping.findForward("previous");
} public ActionForward finish
(
ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response
)
{
return mapping.findForward("finish");
} public ActionForward cancel
(
ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response
)
{
return mapping.findForward("cancel");
}
}
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