First faces problem when converting an Enum

Question

I’m having trouble converting an I made a class to convert only at the time of subtemer the form happens the following error:

javax.faces.FacesException: java.lang.IllegalArgumentException: 
No enum constant br.com.modelo.enumerados.Situacao.Bloqueada

Enum:

    public enum Situacao{   
         L("Livre"), B("Bloqueada");
        
        private final String nome;
        
        Situaca(String nome){
            this.nome = nome;
        }
    
        public String getNome() {
            return nome;
        }
        
        @Override
        public String toString(){
            return this.nome;
        }
        
        public static SituacaoPosicao getSituacao(String valor){
            for(Situacao st : Situacao.values()){
                if(st.nome.equals(valor)){
                    return st;
                }
            }
            throw new IllegalArgumentException();
        }
    
    }

Convert:

    @FacesConverter("situacaoConverter")
    public class SituacaoConverter implements Converter{
    
        @Override
        public Object getAsObject(FacesContext context, UIComponent component, String value) {
                if (value != null) {
                    return Situacao.valueOf(value);
                }
    
                return null;
        }
    
        @Override
        public String getAsString(FacesContext context, UIComponent component, Object value) {
            if (value != null && value instanceof Situacao) {
                return ((Situacao) value).getNome();
            }
            return null;
        }
    
    }

Page XHTML:

   <h:form id="formularioAlteracaoCarro">
         
            <p:messages id="messages" showDetail="true">
                    <p:autoUpdate />
                </p:messages>
            
        <div class="ui-g ui-fluid">
            
            <div class="ui-g-12">
                
                <div class="card card-w-title">
                    <h1>Cadastrar carro</h1>
                    
                    <p:panelGrid columns="2" layout="grid" styleClass="ui-panelgrid-blank form-group" id="formDadosBox">
                        
                        <p:selectOneMenu id="cbboxBox" value="#{carroMng.carro.box}" 
                                         converter="#{boxConverter}" required="true" 
                                         requiredMessage="#{msg.boxObrigatorio}"
                                      immediate="true">
                            <f:selectItem itemLabel="#{msg.optionSelecioneBox}"/>
                            <f:selectItems value="#{carroMng.listaBoxes}" var="box"
                                        itemValue="#{box}" itemLabel="#{box}"/>
                         </p:selectOneMenu>
                        
                    </p:panelGrid>
                    
                    <p:panelGrid columns="2" layout="grid" styleClass="ui-panelgrid-blank form-group" id="formDadosSituacao">
                        <h:panelGroup>
                            <p:outputLabel for="radioSituacao" value="#{msg.labelSituacao}" />
                            <p:selectOneRadio layout="responsive" columns="2" id="radioSituacao" 
                                              value="#{carroMng.carro.carro.situacao}" 
                                            converter="#{situacaoConverter}" 
                                             required="true" 
                                            requiredMessage="#{msg.situacaoObrigatoria}">
                                <f:selectItems value="#{carroMng.listarSituacoesAlteracao}" var="carrosituacao"
                                               itemValue="#{carrosituacao}" itemLabel="#{carrosituacao.nome}"/>
                            </p:selectOneRadio>
                            
                        </h:panelGroup>
                    </p:panelGrid>
                    
                     <p:panelGrid columns="2" layout="grid" styleClass="ui-panelgrid-blank form-group">
                         <p:commandButton icon="ui-icon-save" 
                                        value="#{msg.botaoSalvar}" oncomplete="PF('confirmacaoConclusao').show()"
                                        process="@form" update=":formularioAlteracaoCarro:confirmacaoDialog"
                                        title="#{msg.salvar}"/>  
                         <p:commandButton icon=" ui-icon-closethick" action="#{carroMng.cancelar()}" 
                                     value="#{msg.botaoCancelar}" immediate="true"
                                     title="#{msg.cancelar}"/>
                        
                    </p:panelGrid>
                    
                </div>
                
            </div>
            
        </div>
            
            <p:confirmDialog header="#{msg.mensagemConcluir}" 
                             message="Deseja realmente concluir"
                             widgetVar="confirmacaoConclusao" id="confirmacaoDialog">
                <p:commandButton value="#{msg.textoSim}" oncomplete="PF('confirmacaoConclusao').hide();"
                                 action="#{carroMng.concluirAlteracaoLote()}" process="@form"
                        update=":formularioAlteracaoCarro:formDadosSituacao :formularioAlteracaoCarro:formDadosBox" id="yesButton" />
                <p:button value="#{msg.textoNao}" onclick="PF('confirmacaoConclusao').hide(); return false;" />
            </p:confirmDialog>
            
            
    </h:form>

Answer 1

Rodrigo,

This is because br.com.modelo.enumerados.Situacao.Bloqueada does not exist. What exists is br.com.modelo.enumerados.Situacao.B.

In your logic, you should not manipulate the Enumeration value, but the Enumeration itself. Use only the value String of the Enumeration to Print.

You already have a method created for this, the getSituacao. Then you should use the method below instead of valueOf():

  @Override
  public Object getAsObject(FacesContext context, UIComponent component, String value) {
     if (value != null) {
         return Situacao.getSituacao(value);
     }
    
     return null;
  }