Multiple Render and Action methods in Spring MVC portlet in Liferay - spring

Question

I'm creating a portlet which will take user name in form and display message Welcome in the same portlet after submission of form. For this I've used params in render method.
Note: I'm using spring-MVC with liferay 6.2.
The problem is when I submit name, it redirects to the same page instead of calling another render method.
Here is my view.jsp:
<portlet:actionURL var="actionOneMethodURL">
<portlet:param name="action" value="getUserName">
</portlet:param>
</portlet:actionURL>
<form action="${actionOneMethodURL}" method="post">
Enter Your Name:
<input type="text" name="userName" />
<input type="submit" value="OK!" />
</form>
Here is controller code:
public class PortletController implements Controller {
private static final String WELCOME_PAGE = "welcomeUser";
public void handleActionRequest(ActionRequest request,
ActionResponse response) throws Exception {
}
#ActionMapping(params = "action=getUserName")
public void actionOneMethod(ModelMap model, ActionRequest request,
ActionResponse response) {
String userName = request.getParameter("userName");
model.addAttribute("userName", userName);
response.setRenderParameter("action", "displayName");
}
#RenderMapping
public ModelAndView handleRenderRequest(RenderRequest request,
RenderResponse response) throws Exception {
Map<String, Object> model = new HashMap<String, Object>();
model.put("helloWorldMessage", "Hello There!");
return new ModelAndView("helloWorld", model);
}
#RenderMapping(params = "action=displayName")
public String displayName(ModelMap model, RenderRequest request,
RenderResponse response) throws Exception {
return WELCOME_PAGE;
}
}
Can someone help??
EDIT: Can this happen due to any xml file?? If so which one?

Answer 1

Here is part of code should work:
view.jsp : Name of this form should tell which one of the methods use in controller.
<portlet:actionURL name="actionOneMethod" var="actionOneMethodURL"/>
<form:form action="${actionOneMethodURL}">
<!-- your form body... -->
</form:form>
Controller.java : The one change I did is commented some handler method, and changed your action method to be used by its name. Rest looks fine.
public class PortletController implements Controller {
private static final String WELCOME_PAGE = "welcomeUser";
//I dont think you need this part at all...
/**public void handleActionRequest(ActionRequest request,
ActionResponse response) throws Exception {
}**/
#ActionMapping("actionOneMethod")
public void actionOneMethod(ModelMap model, ActionRequest request,
ActionResponse response) {
String userName = request.getParameter("userName");
model.addAttribute("userName", userName);
response.setRenderParameter("action", "displayName");
}
#RenderMapping
public ModelAndView handleRenderRequest(RenderRequest request,
RenderResponse response) throws Exception {
Map<String, Object> model = new HashMap<String, Object>();
model.put("helloWorldMessage", "Hello There!");
return new ModelAndView("helloWorld", model);
}
#RenderMapping(params = "action=displayName")
public String displayName(ModelMap model, RenderRequest request,
RenderResponse response) throws Exception {
return WELCOME_PAGE;
}
}
I assume you have correct view resolver configured. Here is part of in case:
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>
I think the part of commented method caused problem. Hope it helps.

Answer 2

I would guess that the problem may be with the param name. In the action try to set a different render parameter.
response.setRenderParameter("page","welcome")
Have a look here simple-spring-portlet