Question

I am facing problem while creating sign-up portlet in Liferay 6.1 and store user account in default User_ table in database.

I am using default Liferay class UserLocalServiceUtil and its method UserLocalServiceUtil.addUser(creatorUserId, companyId, autoPassword, password1, password2, autoScreenName, screenName, emailAddress, facebookId, openId, locale, firstName, middleName, lastName, prefixId, suffixId, male, birthdayMonth, birthdayDay, birthdayYear, jobTitle, groupIds, organizationIds, roleIds, userGroupIds, sendEmail, serviceContext);

I face this error:

java.lang.NullPointerException
    at com.liferay.portal.security.pwd.PwdToolkitUtil.validate(PwdToolkitUtil.java:40)
    at com.liferay.portal.service.impl.UserLocalServiceImpl.validate(UserLocalServiceImpl.java:5405)
    at com.liferay.portal.service.impl.UserLocalServiceImpl.addUserWithWorkflow(UserLocalServiceImpl.java:592)
    at com.liferay.portal.service.impl.UserLocalServiceImpl.addUser(UserLocalServiceImpl.java:463)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:112)
    at com.liferay.portal.spring.transaction.TransactionInterceptor.invoke(TransactionInterceptor.java:71)
    at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:108)
    at com.liferay.portal.spring.aop.ChainableMethodAdvice.invoke(ChainableMethodAdvice.java:59)
    at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:108)
    at com.liferay.portal.spring.aop.ChainableMethodAdvice.invoke(ChainableMethodAdvice.java:59)
    at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:108)
    at com.liferay.portal.spring.aop.ServiceBeanAopProxy.invoke(ServiceBeanAopProxy.java:211)
    at $Proxy96.addUser(Unknown Source)
    at com.liferay.portal.service.UserLocalServiceUtil.addUser(UserLocalServiceUtil.java:445)
    at org.apache.jsp.register_jsp._jspService(register_jsp.java:123)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:72)
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:113)
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:70)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684)
    at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:593)
    at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:530)
    at com.liferay.portlet.PortletRequestDispatcherImpl.dispatch(PortletRequestDispatcherImpl.java:316)
    at com.liferay.portlet.PortletRequestDispatcherImpl.include(PortletRequestDispatcherImpl.java:105)
    at com.liferay.util.bridges.mvc.MVCPortlet.include(MVCPortlet.java:366)
    at com.liferay.util.bridges.mvc.MVCPortlet.include(MVCPortlet.java:382)
    at com.liferay.util.bridges.mvc.MVCPortlet.doDispatch(MVCPortlet.java:315)
    at javax.portlet.GenericPortlet.render(GenericPortlet.java:233)
...

Answer 1

You password1 or password2 is probably null, and the autoPassword is set to true. Liferay tries to validate the given passwords, and when comparing null values, comes a NullPointerException.