Hi Friends I am trying to create a web page with a form, so when we click on submit, we are redirected to the result web page, but the content of this page will be generated according to the rules i created in my drl file. Does anyone knows the easiest way to do this? are they a way to call the drl file from the jsp file, or the java file? My Jsp file <form:form method="post" action="login.htm" commandName="loginForm" id="loginForm"> <table> <tr> <td>Enter username:</td> <td><form:input path="UserName" style="width:250px" maxlength="75"/></td> </tr> <tr> <td>Enter password</td> <td><form:password path="UserPassword" style="width:250px" maxlength="75"/></td> </tr> </table> <table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td valign="top" > <label> <input type="submit" value="Save" /> </label> <label> <input type="reset" value="clear"/> </label> </td> </tr> </table> </form:form> My controller class @RequestMapping(value="login.htm", method=RequestMethod.POST) public String showAffilaiteform(Map<String, Object> model,login loginform,BindingResult result) { String target = AFFILIATE_REGISTRATION; try{ testDAO.drools(loginform); model.put("affiliateRegistrationForm", new AffiliateUserRegistration()); }catch(Exception e) { e.printStackTrace(); } return target; } My TestDao class public class TestDAO implements ITestDao { public void drools(login loginform) { try { // load up the knowledge base KnowledgeBase kbase = readKnowledgeBase(); StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession(); KnowledgeRuntimeLogger logger = KnowledgeRuntimeLoggerFactory.newFileLogger(ksession, "myLog"); ksession.insert(loginform); ksession.fireAllRules(); logger.close(); } catch (Throwable t) { t.printStackTrace(); } } private static KnowledgeBase readKnowledgeBase() throws Exception { KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder(); kbuilder.add(ResourceFactory.newClassPathResource("LoginRules.drl"), ResourceType.DRL); KnowledgeBuilderErrors errors = kbuilder.getErrors(); if (errors.size() > 0) { for (KnowledgeBuilderError error: errors) { System.err.println(error); } throw new IllegalArgumentException("Could not parse knowledge."); } KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase(); kbase.addKnowledgePackages(kbuilder.getKnowledgePackages()); return kbase; } My DRL file import com.ri.bean.login; rule "b" dialect "mvel" when login( userName == "" ||==null) then System.out.println("hello"); login lo = new login(); end These are my files and my application runs without any error.Now I want to show a message on my jsp page when the rule violates.can anybody provide me a small piece of code. Regards Brajesh -- View this message in context: http://drools.46999.n3.nabble.com/jsp-java-and-drl-file-tp4017955.html Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

Hi I am trying to say that as in my drl file if username is null or blank I want to show a message in my jsp page that username can't be null. Regards Brajesh -- View this message in context: http://drools.46999.n3.nabble.com/jsp-java-and-drl-file-tp4017955p4017964... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

Hello manstis Thanks for your fast reply but can you provide me a small piece of code what you said theoretically so I became familiar with drools as I am a starter. Regards Brajesh -- View this message in context: http://drools.46999.n3.nabble.com/jsp-java-and-drl-file-tp4017955p4017972... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users