hibernate - unable to pass two lits to the jsp using apachi tiles -

i using spring mvc apache tile , hibernate.i pass tow lists jsp page.but print there's no thing prints.

my controller class follows :

if(userexists!=0){             model.addattribute("maintabs",new maintab());              model.addattribute("maintabslist",loginservice.listmaintabs());              model.addattribute("subtabs",new subtab());              model.addattribute("subtabslist",loginservice.listsubtab(userexists));               return "redirect:/loginsucess";         }else{               model.addattribute("error", "error : invaliduser !,please try again!");               return "loginform";         } 

jsp page follows (menu.jsp):

<c:if test="${not empty subtabslist}">    <c:foreach var="ob"  items="${subtabslist}">     <c:out value="200"/> <%--         <c:out value="${ob.maintab}"/> --%> <%--         <c:out value="${ob.description}"/> --%> <%--         <c:out value="${ob.ref}"/> --%>     </c:foreach>  </c:if> 

i want populate dynamic menu.please me in jsp code.

subtab modelclass :

package net.abc.form; // default package // generated jun 7, 2015 11:03:29 hibernate tools 4.0.0  import java.util.hashset; import java.util.set; import javax.persistence.column; import javax.persistence.entity; import javax.persistence.fetchtype; import javax.persistence.generatedvalue; import static javax.persistence.generationtype.identity; import javax.persistence.id; import javax.persistence.joincolumn; import javax.persistence.manytoone; import javax.persistence.onetomany; import javax.persistence.table;  /**  * subtab generated hbm2java  */ @entity @table(name = "subtab", catalog = "abc") public class subtab implements java.io.serializable {      private integer subtabid;     private maintab maintab;     private string description;     private string ref;     private set<authintication> authintications = new hashset<authintication>(0);      public subtab() {     }      public subtab(maintab maintab, string ref) {         this.maintab = maintab;         this.ref = ref;     }      public subtab(maintab maintab, string description, string ref,             set<authintication> authintications) {         this.maintab = maintab;         this.description = description;         this.ref = ref;         this.authintications = authintications;     }      @id     @generatedvalue(strategy = identity)     @column(name = "subtabid", unique = true, nullable = false)     public integer getsubtabid() {         return this.subtabid;     }      public void setsubtabid(integer subtabid) {         this.subtabid = subtabid;     }      @manytoone(fetch = fetchtype.lazy)     @joincolumn(name = "maintabid", nullable = false)     public maintab getmaintab() {         return this.maintab;     }      public void setmaintab(maintab maintab) {         this.maintab = maintab;     }      @column(name = "description", length = 45)     public string getdescription() {         return this.description;     }      public void setdescription(string description) {         this.description = description;     }      @column(name = "ref", nullable = false, length = 45)     public string getref() {         return this.ref;     }      public void setref(string ref) {         this.ref = ref;     }      @onetomany(fetch = fetchtype.lazy, mappedby = "subtab")     public set<authintication> getauthintications() {         return this.authintications;     }      public void setauthintications(set<authintication> authintications) {         this.authintications = authintications;     }  } 

you're adding attributes , sending redirect. lose informations set. if redirect page show right. example:

if(userexists!=0){         model.addattribute("maintabs",new maintab());          model.addattribute("maintabslist",loginservice.listmaintabs());          model.addattribute("subtabs",new subtab());          model.addattribute("subtabslist",loginservice.listsubtab(userexists));           return "successpage";     }else{           model.addattribute("error", "error : invaliduser !,please try again!");           return "loginform";     } 

if wanna redirect data, can use httpsession.

session.setattribute("maintabs",new maintab());