custom validator always throws nullPointerExceptions
Hi,
I have some problem with my custom validator.
I'm looking for some helps.
This is the validator class:
package com.roc.validator;
import javax.faces.application.FacesMessage;
import javax.faces.component.UIComponent;
import javax.faces.component.UIInput;
import javax.faces.context.FacesContext;
import javax.faces.validator.Validator;
import javax.faces.validator.ValidatorException;
public class RegisterSecondPwdValidator implements Validator{
public void validate(FacesContext context, UIComponent component, Object value)
throws ValidatorException {
UIInput pwd1Input = (UIInput)context.getViewRoot().findComponent("rpwd1");
String pwd1 = (String) pwd1Input.getValue();
System.out.println(pwd1);
String pwd2 = (String)value;
pwd1 = pwd1.trim();
pwd2 = pwd2.trim();
if(!pwd1.equals(pwd2) || pwd1 != pwd2){
FacesMessage message = new FacesMessage();
message.setDetail("The passord is different.");
message.setSeverity(FacesMessage.SEVERITY_ERROR);
throw new ValidatorException(message);
}
}
}and this is the faces-config.xml:
<validator> <validator-id>secondPwdValidator</validator-id> <validator-class>com.roc.validator.RegisterSecondPwdValidator</validator-class> </validator>
and the xhtml is :
<h:inputSecret id="rpwd1"
value="#{userinfoHome.instance.userPassword}"
validator="registerFirstPwdValidator" styleClass="input2">
<rich:ajaxValidator event="onblur" />
</h:inputSecret>
<rich:message for="rpwd1" />
<h:inputSecret id="rpwd2" value="#{register.password2}" styleClass="input2" required="true">
<f:validator validatorId="secondPwdValidator"/>
<rich:ajaxValidator event="onblur" />
</h:inputSecret>
<rich:message for="rpwd2" />
and the exceptions is:
16:59:44,308 WARN [lifecycle] java.lang.NullPointerException javax.faces.FacesException: java.lang.NullPointerException at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:725) at javax.faces.component.UIComponentBase.invokeOnComponent(UIComponentBase.java:675) at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:731) at javax.faces.component.UIComponentBase.invokeOnComponent(UIComponentBase.java:675) at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:731) at javax.faces.component.UIComponentBase.invokeOnComponent(UIComponentBase.java:675) at org.ajax4jsf.component.AjaxViewRoot.processPhase(AjaxViewRoot.java:242) at org.ajax4jsf.component.AjaxViewRoot.processValidators(AjaxViewRoot.java:455) at com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:76) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100) at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83) at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:68) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:85) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:177) at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:267) at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:380) at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:507) at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:182) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446) at java.lang.Thread.run(Thread.java:595) Caused by: java.lang.NullPointerException at com.roc.validator.RegisterSecondPwdValidator.validate(RegisterSecondPwdValidator.java:16) at javax.faces.component.UIInput.validateValue(UIInput.java:1019) at javax.faces.component.UIInput.validate(UIInput.java:875) at javax.faces.component.UIInput.executeValidate(UIInput.java:1072) at javax.faces.component.UIInput.processValidators(UIInput.java:672) at org.ajax4jsf.component.AjaxViewRoot$3.invokeContextCallback(AjaxViewRoot.java:439) at org.ajax4jsf.component.ContextCallbackWrapper.invokeContextCallback(ContextCallbackWrapper.java:24) at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:722) ... 50 more 16:59:44,308 ERROR [lifecycle] JSF1054: (Phase ID: PROCESS_VALIDATIONS 3, View ID: /register_and_login.xhtml) Exception thrown during phase execution: javax.faces.event.PhaseEvent[source=com.sun.faces.lifecycle.LifecycleImpl@6287d3] 16:59:44,308 ERROR [ExceptionFilter] handling uncaught exception javax.servlet.ServletException: java.lang.NullPointerException at javax.faces.webapp.FacesServlet.service(FacesServlet.java:277) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83) at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:68) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:85) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:177) at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:267) at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:380) at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:507) at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:182) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446) at java.lang.Thread.run(Thread.java:595) Caused by: javax.faces.FacesException: java.lang.NullPointerException at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:725) at javax.faces.component.UIComponentBase.invokeOnComponent(UIComponentBase.java:675) at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:731) at javax.faces.component.UIComponentBase.invokeOnComponent(UIComponentBase.java:675) at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:731) at javax.faces.component.UIComponentBase.invokeOnComponent(UIComponentBase.java:675) at org.ajax4jsf.component.AjaxViewRoot.processPhase(AjaxViewRoot.java:242) at org.ajax4jsf.component.AjaxViewRoot.processValidators(AjaxViewRoot.java:455) at com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:76) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100) at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265) ... 39 more Caused by: java.lang.NullPointerException at com.roc.validator.RegisterSecondPwdValidator.validate(RegisterSecondPwdValidator.java:16) at javax.faces.component.UIInput.validateValue(UIInput.java:1019) at javax.faces.component.UIInput.validate(UIInput.java:875) at javax.faces.component.UIInput.executeValidate(UIInput.java:1072) at javax.faces.component.UIInput.processValidators(UIInput.java:672) at org.ajax4jsf.component.AjaxViewRoot$3.invokeContextCallback(AjaxViewRoot.java:439) at org.ajax4jsf.component.ContextCallbackWrapper.invokeContextCallback(ContextCallbackWrapper.java:24) at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:722) ... 50 more 16:59:44,308 ERROR [ExceptionFilter] exception root cause javax.faces.FacesException: java.lang.NullPointerException at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:725) at javax.faces.component.UIComponentBase.invokeOnComponent(UIComponentBase.java:675) at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:731) at javax.faces.component.UIComponentBase.invokeOnComponent(UIComponentBase.java:675) at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:731) at javax.faces.component.UIComponentBase.invokeOnComponent(UIComponentBase.java:675) at org.ajax4jsf.component.AjaxViewRoot.processPhase(AjaxViewRoot.java:242) at org.ajax4jsf.component.AjaxViewRoot.processValidators(AjaxViewRoot.java:455) at com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:76) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100) at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83) at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:68) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:85) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:177) at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:267) at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:380) at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:507) at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:182) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446) at java.lang.Thread.run(Thread.java:595) Caused by: java.lang.NullPointerException at com.roc.validator.RegisterSecondPwdValidator.validate(RegisterSecondPwdValidator.java:16) at javax.faces.component.UIInput.validateValue(UIInput.java:1019) at javax.faces.component.UIInput.validate(UIInput.java:875) at javax.faces.component.UIInput.executeValidate(UIInput.java:1072) at javax.faces.component.UIInput.processValidators(UIInput.java:672) at org.ajax4jsf.component.AjaxViewRoot$3.invokeContextCallback(AjaxViewRoot.java:439) at org.ajax4jsf.component.ContextCallbackWrapper.invokeContextCallback(ContextCallbackWrapper.java:24) at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:722) ... 50 more
If I don't use the FacesContext and UIConponent, this validator can goes well.
How can I solved this soproblem?
Please help me.....
