Bonjour a tous

j'affiche l'attribut birthday de type Date qui se trouve dans l'objet applicant en session de cette maniere

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<html:text property="day" title="day" maxlength="2" size="2" tabindex="20"><fmt:formatDate type="date" var="applicant" scope="session" value="birthday" pattern="dd"/></html:text>
                <html:text property="month" title="month" maxlength="2" size="2" tabindex="30"><fmt:formatDate type="date" var="applicant" scope="session" value="birthday" pattern="mm"/></html:text>
                <html:text property="year" title="year" maxlength="4" size="4" tabindex="40"><fmt:formatDate type="date" var="applicant" scope="session" value="birthday" pattern="yyyy"/></html:text>
mais j'obtiens l'errur suivante :
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13:32:32,045 ERROR [jsp]:253 - "Servlet.service()" pour la servlet jsp a généré une exception
javax.servlet.jsp.JspException: An error occurred while evaluating custom action attribute "value" with value "birthday": Attempt to convert String "birthday" to type "java.util.Date", but there is no PropertyEditor for that type (null)
        at org.apache.taglibs.standard.lang.jstl.Evaluator.evaluate(Evaluator.java:109)
        at org.apache.taglibs.standard.lang.jstl.Evaluator.evaluate(Evaluator.java:129)
        at org.apache.taglibs.standard.lang.support.ExpressionEvaluatorManager.evaluate(ExpressionEvaluatorManager.java:75)
        at org.apache.taglibs.standard.tag.el.fmt.FormatDateTag.evaluateExpressions(FormatDateTag.java:134)
        at org.apache.taglibs.standard.tag.el.fmt.FormatDateTag.doStartTag(FormatDateTag.java:67)
        at org.apache.jsp.applicant.displayApplicant_jsp._jspx_meth_fmt_formatDate_0(displayApplicant_jsp.java:2405)
        at org.apache.jsp.applicant.displayApplicant_jsp._jspService(displayApplicant_jsp.java:494)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:368)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
        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.invoke(StandardEngineValve.java:107)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
        at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
        at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
        at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
        at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
        at java.lang.Thread.run(Thread.java:595)
Avez vous une idee pour la corriger?
Merki