login with screen name and email address

http://www.liferay.com/web/lauri.hiltunen/blog/-/blogs/tip-of-the-day-login-magic-by-overriding-struts-actions

package com.sample.login;

import javax.portlet.ActionRequest;

import javax.portlet.filter.ActionRequestWrapper;

import com.liferay.portal.kernel.util.Validator;

import com.liferay.portal.util.PortalUtil;

public class LoginParamWrapper extends ActionRequestWrapper {

@Override

public String getParameter(String name) {

String value=super.getParameter(name);

if(LoginParamKeys.LOGIN.equals(name) && Validator.isEmailAddress(value))

{

ActionRequest actionRequest=this.getRequest(); 

long companyId=PortalUtil.getCompanyId(actionRequest);

value=LoginNameResolver.resolveScreenNameFromEmailAddress(value, companyId);

}

// TODO Auto-generated method stub

return value;

}

public LoginParamWrapper(ActionRequest request) {

super(request);

// TODO Auto-generated constructor stub

}

}

--

package com.sample.login;

import com.liferay.portal.kernel.exception.PortalException;

import com.liferay.portal.kernel.exception.SystemException;

import com.liferay.portal.model.User;

import com.liferay.portal.service.UserLocalServiceUtil;

public class LoginNameResolver {

public static String resolveScreenNameFromEmailAddress(String email,long companyId)

{

String screenName="";

try {

User user=UserLocalServiceUtil.getUserByEmailAddress(companyId, email);

screenName=user.getScreenName();

} catch (PortalException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (SystemException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

 return screenName;

}

}

---

package com.sample.login;

import javax.portlet.ActionRequest;

import javax.portlet.ActionResponse;

import javax.portlet.PortletConfig;

import javax.portlet.RenderRequest;

import javax.portlet.RenderResponse;

import javax.portlet.ResourceRequest;

import javax.portlet.ResourceResponse;

import com.liferay.portal.kernel.struts.BaseStrutsPortletAction;

import com.liferay.portal.kernel.struts.StrutsPortletAction;

public class LoginAction extends BaseStrutsPortletAction {

@Override

public void processAction(StrutsPortletAction originalStrutsPortletAction,

PortletConfig portletConfig, ActionRequest actionRequest,

ActionResponse actionResponse) throws Exception {

// TODO Auto-generated method stub

originalStrutsPortletAction.processAction(originalStrutsPortletAction, portletConfig, new LoginParamWrapper(actionRequest), actionResponse);

}

@Override

public String render(StrutsPortletAction originalStrutsPortletAction,

PortletConfig portletConfig, RenderRequest renderRequest,

RenderResponse renderResponse) throws Exception {

// TODO Auto-generated method stub

return originalStrutsPortletAction.render(originalStrutsPortletAction, portletConfig, renderRequest,

renderResponse);

}

@Override

public void serveResource(StrutsPortletAction originalStrutsPortletAction,

PortletConfig portletConfig, ResourceRequest resourceRequest,

ResourceResponse resourceResponse) throws Exception {

// TODO Auto-generated method stub

originalStrutsPortletAction.serveResource(originalStrutsPortletAction, portletConfig,

resourceRequest, resourceResponse);

}

}

---

package com.sample.login;

public class LoginParamKeys {

public static String LOGIN="login";

}