salut,

mon problème est comment récupérer les valeurs saisis dans un formulaire

mon application est deviser en deux partis :

partis EJB et parti web avec struts2

la page authentification.jsp :

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<%@ page contentType="text/html; charset=UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<html>
<head>
 
</head>
<body>
 
    <s:form>
     <table align="center">
 
         <tr><td><s:text name="login"/></td>
         	        <td><s:textfield name="user.login" size="30"/></td>
         </tr>
        <tr>
            <td><s:text name="password"/></td>
                            <td><s:textfield name="user.password" size="30"/></td>
        </tr>
 
 
    </table>
    		 <br/>
    <table> 
    	     <tr>
    		   <td><a href="authentification.action">Authentification</a></td>
 
    		 <tr>
    </table> 		  		 
    	</s:form>
 
</body>
</html>

le fichier struts.xml

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<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">
 
<struts>
   <include file="struts-default.xml"/>
     <package name="default" extends="struts-default">
 
 
 
        <action name="authentification" method="Auth" class="com.test.action.UserAction">
        <result name="success">users.jsp</result>
        </action>
 
 
     </package>
</struts>
la class UserAction.java :

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public class UserAction extends ActionSupport
{
//ici un code pour faire l'injection et la relation avec le projet EJB
......
......
  private User user;
 
	public String Auth()
	{
 
	//le problème ICI comment récupérer les valeurs saisi
 
//ICI je fait un test pour savoir si l'utilisateur est rempli
		System.out.println(user.getLogin); //ce la ligne 75
 
 
 
 
		return "success";
 
	}
 
 
 public User getUser() {
		return user;
	}
 
	public void setUser(User user) {
		this.user = user;
	}
 
}
après l’exécution voila l'erreur

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javax.servlet.ServletException: java.lang.NullPointerException
	org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:518)
	org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:421)
 
 
cause mère 
 
java.lang.NullPointerException
	com.test.action.UserAction.Auth(UserAction.java:75)
	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	java.lang.reflect.Method.invoke(Unknown Source)
	com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:399)
	com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:262)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:224)
	com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:213)
	com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:86)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:150)
	org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:48)
	com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:86)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:123)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	com.opensymphony.xwork2.interceptor.ParametersInterceptor.intercept(ParametersInterceptor.java:161)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:105)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:83)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:207)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:74)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:127)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	org.apache.struts2.interceptor.ProfilingActivationInterceptor.intercept(ProfilingActivationInterceptor.java:107)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:206)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:115)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:143)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	com.opensymphony.xwork2.interceptor.PrepareInterceptor.intercept(PrepareInterceptor.java:115)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:170)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:123)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:176)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
	com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
	com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
	org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:50)
	org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:507)
	org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:421)
merci d'avance