Errors come when i set attribute in request in Action Form

[82rathi.angara]

public class EmailFriendForm extends ActionForm {
private Boolean not_include_price = false;
private String your_message;
private String your_email;
private String your_name;
private String frend_email;
private String productPrice;
private static String email_pattern = "[0-9a-z-._]*@[0-9a-z-._]*\\.[a-wyz][a-z](fo|g|l|m|mes|o|op|pa|ro|seum|t|u|v|z)?";

public ActionErrors validate(ActionMapping arg0, HttpServletRequest arg1) {
ActionErrors errors = new ActionErrors();
HttpServletRequest request=null;
if(your_name==null || !your_name.matches("^[^><]{1,100}$"))
errors.add(ActionErrors.GLOBAL_ERROR, new ActionMessage("errors.sendEmailToFriend.your_name" ));
if(your_email==null || your_email.equals("") || !your_email.toLowerCase().matches("^"+email_patter n+"$"))
errors.add(ActionErrors.GLOBAL_ERROR, new ActionMessage("errors.sendEmailToFriend.your_email "));
if(frend_email==null || frend_email.equals("") || !frend_email.toLowerCase().matches("^((" + email_pattern + ")(,\\s*?)?)+?$"))
errors.add(ActionErrors.GLOBAL_ERROR, new ActionMessage("errors.sendEmailToFriend.friend_ema il"));
request.setAttribute("sendEmail","Your Email!");
return errors;
}


In this code i have added request.setAttribute("sendEmail","Your Email!");
than error comes:
java.lang.NullPointerException
at com.elasticpath.web.struts.action.form.EmailFriend Form.validate(EmailFriendForm.java:32)
at org.apache.struts.action.RequestProcessor.processV alidate(RequestProcessor.java:919)
at org.apache.struts.action.RequestProcessor.process( RequestProcessor.java:204)
at org.apache.struts.action.ActionServlet.process(Act ionServlet.java:1192)
at org.apache.struts.action.ActionServlet.doPost(Acti onServlet.java:430)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:717)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:810)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:173)
at com.elasticpath.commons.HibernateSessionFilter.doF ilter(HibernateSessionFilter.java:29)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:173)
at com.elasticpath.commons.EncodingFilter.doFilter(En codingFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:173)
at com.elasticpath.commons.MemoryStatusFilter.doFilte r(MemoryStatusFilter.java:35)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:173)
at com.elasticpath.commons.AntiCacheFilter.doFilter(A ntiCacheFilter.java:33)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:173)
at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter .doFilter(UrlRewriteFilter.java:738)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:173)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doF ilter(ReplyHeaderFilter.java:81)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invo ke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invo ke(StandardContextValve.java:178)
at org.jboss.web.tomcat.security.CustomPrincipalValve .invoke(CustomPrincipalValve.java:39)
at org.jboss.web.tomcat.security.SecurityAssociationV alve.invoke(SecurityAssociationValve.java:159)
at org.jboss.web.tomcat.security.JaccContextValve.inv oke(JaccContextValve.java:59)
at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invok e(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.servic e(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(H ttp11Processor.java:856)
at org.apache.coyote.http11.Http11Protocol$Http11Conn ectionHandler.processConnection(Http11Protocol.jav a:744)
at org.apache.tomcat.util.net.PoolTcpEndpoint.process Socket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.MasterSlaveWorkerThread .run(MasterSlaveWorkerThread.java:112)
at java.lang.Thread.run(Unknown Source)
16:55:18,781 ERROR [[action]] Servlet.service() for servlet action threw exception

[Eranga]

You get a null pointer exception there. So did you debug the code? It's the simplest way to sort out the issue.

[82rathi.angara]

Ok...my question is why this error come ...Can i set value in request in validate method....because i want tis value on jsp

[daGame]

request.setAttribute("sendEmail","Your Email!");
In this code i have added request.setAttribute("sendEmail","Your Email!");
than error comes:
java.lang.NullPointerException

Did you check out how the setAttribute() method looks like in the javaDocs?
Check it out and you'll come to know your mistake

Edit: Here is the JavaDocs

Kind Regards,

daGame.