el - PropertyNotFoundException exception in the JSP page -


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i'm trying edit entity through jsp page

<jsp:include page="menueditardisciplina.jsp">     <jsp:param name="iddisciplina" value='<%=request.getparameter("id")%>'/> </jsp:include>

the servlet code i'm using

public class inseredisciplina implements logica {      private clienterestdisciplina clienterestdisciplina;     private clienterestcurso clienterestcurso;      public void executa(httpservletrequest req, httpservletresponse res)             throws exception {         clienterestdisciplina = new clienterestdisciplina();         clienterestcurso = new clienterestcurso();          string idcursos = req.getparameter("idcurso");         integer idcurso = (idcursos != null) ? integer.parseint(idcursos)                 : null;          string idprofessors = req.getparameter("idprofessor");         integer idprofessor = (idprofessors != null) ? integer                 .parseint(idprofessors) : null;          string iddisciplinas = req.getparameter("id");         integer iddisciplina = (iddisciplinas != null) ? integer                 .parseint(iddisciplinas) : null;          disciplina disciplina = iddisciplina == null ? new disciplina()                 : clienterestdisciplina.getdisciplina(iddisciplina);          disciplina.setnome(req.getparameter("nome"));         disciplina.setsala(integer.parseint(req.getparameter("sala")));          string datastring = req.getparameter("horario").tostring();          disciplina.sethorario(date.valueof(datastring));         disciplina.setcargahoraria(integer.parseint(req                 .getparameter("cargahoraria")));         disciplina.setdescricao(req.getparameter("descricao"));          if (disciplina.getiddisciplina() != null) {             clienterestdisciplina.editardisciplina(disciplina);         } else {             clienterestcurso.inserirdisciplinanocurso(idcurso, idprofessor,                     disciplina);         }          res.sendredirect("disciplina/listardisciplinas.jsp");      }  }

my java bean class below

@xmlrootelement public class disciplina implements serializable {     private static final long serialversionuid = 1l;      private integer id;      public disciplina() {     }      public disciplina(integer id) {         this.id = id;     }      public disciplina(integer id, string nome, string descricao, int cargahoraria, date horario, int sala) {         this.id = id;         this.nome = nome;         this.descricao = descricao;         this.cargahoraria = cargahoraria;         this.horario = horario;         this.sala = sala;     }         public integer getiddisciplina() {         return id;     }      public void setiddisciplina(integer iddisciplina) {         this.id = iddisciplina;     }      // ...  }

but gives exception :

javax.el.propertynotfoundexception: class 'br.icmc.usp.modelo.disciplina' not have property 'id'.     @ javax.el.beanelresolver.getbeanproperty(beanelresolver.java:664)     @ javax.el.beanelresolver.getvalue(beanelresolver.java:293)     @ javax.el.compositeelresolver.getvalue(compositeelresolver.java:188)     @ com.sun.el.parser.astvalue.getvalue(astvalue.java:120)     @ com.sun.el.parser.astvalue.getvalue(astvalue.java:167)     @ com.sun.el.valueexpressionimpl.getvalue(valueexpressionimpl.java:224)     @ org.apache.jasper.runtime.pagecontextimpl.evaluateexpression(pagecontextimpl.java:1009)     @ org.apache.jsp.disciplina.editardisciplina_jsp._jspservice(editardisciplina_jsp.java:99)     @ org.apache.jasper.runtime.httpjspbase.service(httpjspbase.java:111)     @ javax.servlet.http.httpservlet.service(httpservlet.java:848)     @ org.apache.jasper.servlet.jspservletwrapper.service(jspservletwrapper.java:403)     @ org.apache.jasper.servlet.jspservlet.servicejspfile(jspservlet.java:492)     @ org.apache.jasper.servlet.jspservlet.service(jspservlet.java:378)

why receiving propertynotfoundexception exception? wrong?

this seems el related error. not scriptlet code error. el works on getter setters.

change getter setter 

public integer getiddisciplina() {     return id; }  public void setiddisciplina(integer iddisciplina) {     this.id = iddisciplina; }

to

    public integer getid() {         return id;     }      public void setid(integer iddisciplina) {         this.id = iddisciplina;     }

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