java - Neither BindingResult nor plain target object for bean name 'categorie' available as request attribute -

i'm new spring mvc , have error form validation , don't know why.

i looked answers related problem on web not figure out problem in code.

here jsp page.

<div class="modal-body">       <f:form method="post" commandname="categorie" enctype="multipart/form-data"        action="categorie/add" class="pure-form pure-form-aligned">        <%-- <f:form action="addcategorie" method="post">   --%>        <p><label for="nomcategorie">nom catégorie  </label><f:input type="text" id="nomcatg" path="nomcategorie"/></p>       <p><label for="typecategorie">type catégorie </label><f:input type="text" id="typecatg" path="typecategorie"/></p>        <div class="pure-control-group">               <label for="image">image</label>                 <%--  <c:if test="${famille.idfamille!=null}">                              <c:if test="${famille.image!=null}">                             <img alt="" src="photofamille?idfam=${famille.idfamille }" class="img">                             </c:if>                         </c:if>  --%>                 <!-- <br>                     <br>     -->          <input type="file" name="file" >             </div>           <br>        <div class="pure-control-group">                <label for="couleurfond">couleur de fond</label>               <f:input type="color" name="your favourite color" pattern="#[a-f0-9]{9}" value="#fad345" list="" path="couleur"/>               <!--  color: <input class="jscolor" value="ab2567"> -->                </div>          <f:input path="idcategorie" type="text" />       </div>         <div class="modal-footer">         <button type="button" class="btn btn-default" data-dismiss="modal">close</button>         <button type="submit" class="btn btn-primary" >save changes</button>       </div>    </f:form> 

my controller:

@controller public class categoriecontroller {     @autowired     categorieservice categorieservice;       @requestmapping(value = "/categories", method = requestmethod.get)         public string liste(model model,httpservletrequest request) {  //          model.addattribute("article", new article());              model.addattribute("categories", categorieservice.listcategories());               return "listcategories";         }       @requestmapping(value= "/categorie/add",method = requestmethod.post,headers="content-type=multipart/*")       public string addfamille(@modelattribute("categorie") categorie c,bindingresult bindingresult, model model,multipartfile file) throws exception{          model.addattribute("categorie", new categorie());            if(c.getidcategorie() == null){               categorieservice.addcategorie(c);        }          return "redirect:/categories";     }  } 

i found error :

rave: "servlet.service()" pour la servlet jsp lancé une exception java.lang.illegalstateexception: neither bindingresult nor plain target object bean name 'categorie' available request attribute     @ org.springframework.web.servlet.support.bindstatus.<init>(bindstatus.java:144)     @ org.springframework.web.servlet.tags.form.abstractdataboundformelementtag.getbindstatus(abstractdataboundformelementtag.java:168)     @ org.springframework.web.servlet.tags.form.abstractdataboundformelementtag.getpropertypath(abstractdataboundformelementtag.java:188)     @ org.springframework.web.servlet.tags.form.abstractdataboundformelementtag.getname(abstractdataboundformelementtag.java:154)     @ org.springframework.web.servlet.tags.form.abstractdataboundformelementtag.writedefaultattributes(abstractdataboundformelementtag.java:117)     @ org.springframework.web.servlet.tags.form.abstracthtmlelementtag.writedefaultattributes(abstracthtmlelementtag.java:422)     @ org.springframework.web.servlet.tags.form.inputtag.writetagcontent(inputtag.java:142)     @ org.springframework.web.servlet.tags.form.abstractformtag.dostarttaginternal(abstractformtag.java:84)     @ org.springframework.web.servlet.tags.requestcontextawaretag.dostarttag(requestcontextawaretag.java:80)     @ org.apache.jsp.web_002dinf.views.listcategories_jsp._jspx_meth_f_005finput_005f0(listcategories_jsp.java:757)     @ org.apache.jsp.web_002dinf.views.listcategories_jsp._jspx_meth_f_005fform_005f0(listcategories_jsp.java:683)     @ org.apache.jsp.web_002dinf.views.listcategories_jsp._jspservice(listcategories_jsp.java:538)     @ org.apache.jasper.runtime.httpjspbase.service(httpjspbase.java:70)     @ javax.servlet.http.httpservlet.service(httpservlet.java:727)     @ org.apache.jasper.servlet.jspservletwrapper.service(jspservletwrapper.java:432)     @ org.apache.jasper.servlet.jspservlet.servicejspfile(jspservlet.java:395)     @ org.apache.jasper.servlet.jspservlet.service(jspservlet.java:339)     @ javax.servlet.http.httpservlet.service(httpservlet.java:727)     @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:303)     @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:208)     @ org.apache.tomcat.websocket.server.wsfilter.dofilter(wsfilter.java:52)     @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:241)     @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:208)     @ org.apache.catalina.core.applicationdispatcher.invoke(applicationdispatcher.java:748)     @ org.apache.catalina.core.applicationdispatcher.processrequest(applicationdispatcher.java:486)     @ org.apache.catalina.core.applicationdispatcher.doforward(applicationdispatcher.java:411)     @ org.apache.catalina.core.applicationdispatcher.forward(applicationdispatcher.java:338)     @ org.springframework.web.servlet.view.internalresourceview.rendermergedoutputmodel(internalresourceview.java:168)     @ org.springframework.web.servlet.view.abstractview.render(abstractview.java:303)     @ org.springframework.web.servlet.dispatcherservlet.render(dispatcherservlet.java:1228)     @ org.springframework.web.servlet.dispatcherservlet.processdispatchresult(dispatcherservlet.java:1011)     @ org.springframework.web.servlet.dispatcherservlet.dodispatch(dispatcherservlet.java:955)     @ org.springframework.web.servlet.dispatcherservlet.doservice(dispatcherservlet.java:877)     @ org.springframework.web.servlet.frameworkservlet.processrequest(frameworkservlet.java:966)     @ org.springframework.web.servlet.frameworkservlet.doget(frameworkservlet.java:857)     @ javax.servlet.http.httpservlet.service(httpservlet.java:620)     @ org.springframework.web.servlet.frameworkservlet.service(frameworkservlet.java:842)     @ javax.servlet.http.httpservlet.service(httpservlet.java:727)     @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:303)     @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:208)     @ org.apache.tomcat.websocket.server.wsfilter.dofilter(wsfilter.java:52)     @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:241)     @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:208)     @ org.apache.catalina.core.standardwrappervalve.invoke(standardwrappervalve.java:220)     @ org.apache.catalina.core.standardcontextvalve.invoke(standardcontextvalve.java:122)     @ org.apache.catalina.authenticator.authenticatorbase.invoke(authenticatorbase.java:504)     @ org.apache.catalina.core.standardhostvalve.invoke(standardhostvalve.java:170)     @ org.apache.catalina.valves.errorreportvalve.invoke(errorreportvalve.java:103)     @ org.apache.catalina.valves.accesslogvalve.invoke(accesslogvalve.java:950)     @ org.apache.catalina.core.standardenginevalve.invoke(standardenginevalve.java:116)     @ org.apache.catalina.connector.coyoteadapter.service(coyoteadapter.java:421)     @ org.apache.coyote.http11.abstracthttp11processor.process(abstracthttp11processor.java:1074)     @ org.apache.coyote.abstractprotocol$abstractconnectionhandler.process(abstractprotocol.java:611)     @ org.apache.tomcat.util.net.jioendpoint$socketprocessor.run(jioendpoint.java:316)     @ java.util.concurrent.threadpoolexecutor.runworker(threadpoolexecutor.java:1145)     @ java.util.concurrent.threadpoolexecutor$worker.run(threadpoolexecutor.java:615)     @ org.apache.tomcat.util.threads.taskthread$wrappingrunnable.run(taskthread.java:61)     @ java.lang.thread.run(thread.java:745)  févr. 08, 2016 2:57:15 pm org.apache.catalina.core.standardwrappervalve invoke grave: servlet.service() servlet [appservlet] in context path [/elolink] threw exception [an exception occurred processing jsp page /web-inf/views/listcategories.jsp @ line 417  414:       <f:form method="post" commandname="categorie" enctype="multipart/form-data" 415:        action="categorie/add" class="pure-form pure-form-aligned"> 416:        <%-- <f:form action="addcategorie" method="post">   --%>  417:       <p><label for="nomcategorie">nom cat�gorie  </label><f:input type="text" id="nomcatg" path="nomcategorie"/></p> 418:       <p><label for="typecategorie">type cat�gorie </label><f:input type="text" id="typecatg" path="typecategorie"/></p> 419:        <div class="pure-control-group"> 420:               <label for="image">image</label>   

what's problem ,please me resolve

your jsp looking binding bean called categorie. can add new bean form in liste method.

that is, move line method:

model.addattribute("categorie", new categorie());

then, make sure properties on page found in categorie bean.

also, newer way use modelattribute instead of commandname.

you can take @ this post similar situation.