Question

我对 selectOneMenu 组件有疑问，我试图在 selectOneMenu 的更改事件中调用方法但不幸的是出了点问题。
当我尝试从 ajax listener 调用方法 actualizaDistritosNaturalidade 时，不会调用该方法。它只在我选择 noSelectionOption 时调用该方法。

当我看到HTTP响应时，我看到以下错误：

<extension ln="primefaces" type="args">{"validationFailed":true}</extension>

我尝试下面的方法，甚至使用转换器波纹管。

我有以下模板文件：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
    xmlns:f="http://xmlns.jcp.org/jsf/core"
    xmlns:h="http://xmlns.jcp.org/jsf/html"
    xmlns:ui="http://xmlns.jcp.org/jsf/facelets"
    xmlns:p="http://primefaces.org/ui">

<h:head>
    <h:outputStylesheet name="style.css" library="default" />
</h:head>
<h:body>
    <div id="page">
        <div id="header">
            <ui:insert name="header">
                <h:form>                    
                    <p:menubar id="menu">
                        <p:menuitem>
                            <h:link outcome="/default.xhmtl">                               
                                <p:outputLabel value="FuncionariosGest" />
                            </h:link>
                        </p:menuitem>
                        <p:submenu label="Colaborador" icon="ui-icon-document">
                            <p:menuitem value="Criar Colaborador"
                                url="/create-colaborator/create-colaborator.xhtml" />                       
                        </p:submenu>
                    </p:menubar>
                </h:form>
            </ui:insert>
        </div>
        <div id="contentWrap" class="ui-fluid">
            <div id="content">
                <ui:insert name="content"></ui:insert>
            </div>
        </div>
        <div id="footer">
            <ui:insert name="footer">
                bla bla 
            </ui:insert>
        </div>
    </div>
</h:body>
</html>

以下观点：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
    xmlns:f="http://xmlns.jcp.org/jsf/core"
    xmlns:h="http://xmlns.jcp.org/jsf/html"
    xmlns:ui="http://xmlns.jcp.org/jsf/facelets"
    xmlns:p="http://primefaces.org/ui">
<ui:composition template="/template.xhtml">
    <ui:define name="content">
        <h:form>
            <h:messages id="messages" />
            <div class="ui-g-2">
                <p:outputLabel for="birthProvince" value="Provincia :" />
            </div>
            <div class="ui-g-4">
                <p:selectOneMenu id="birthProvince"
                    value="#{criarProfessionalController.profissional.provinciaDeNaturalidade}">
                    <p:ajax event="change" process="@this"
                        listener="#{criarProfessionalController.actualizaDistritosNaturalidade}" />
                    <f:selectItem itemLabel="Selecione uma opção" itemValue="#{null}"
                        noSelectionOption="true" />
                    <f:selectItems
                        value="#{criarProfessionalController.provinciasItem}" />
                </p:selectOneMenu>
            </div>
        </h:form>
    </ui:define>
</ui:composition>
</html>

在我的Managed bean中，我有以下方法（删除其他部分）：

@PostConstruct
public void init() {
    this.profissional = new Professional();
    this.setTipoDeDocumentos(tipoDocumentoDAO.buscaTodos());
    this.setProvincias(provinciaDAO.buscaTodos());
    this.fillProvinciasItem();
}

public void actualizaDistritosNaturalidade() {
    if (this.profissional.getProvinciaDeNaturalidade() != null) {
        this.setDistritosNaturalidade(
                this.distritoDAO.buscaTodosPorProvincia(this.profissional.getProvinciaDeNaturalidade()));
    }
}
private void fillProvinciasItem()
{
    this.setProvinciasItem(new ArrayList<SelectItem>());
    for(Provincia provincia : this.getProvincias())
    {
        this.getProvinciasItem().add(new SelectItem(provincia, provincia.getNome()));
    }
}

转换器：

@Override
    public Object getAsObject(FacesContext ctx, UIComponent arg1, String provinceID) {

        try {
            Long id = Long.valueOf(provinceID);
            ValueExpression vex = ctx.getApplication().getExpressionFactory().createValueExpression(ctx.getELContext(),
                    "#{criarProfessionalController}", CriarProfessionalController.class);

            CriarProfessionalController profissionalController = (CriarProfessionalController) vex
                    .getValue(ctx.getELContext());
            return profissionalController.getProvinciaByID(id);
        } catch (NumberFormatException e) {

        }
        return null;
    }

    @Override
    public String getAsString(FacesContext arg0, UIComponent arg1, Object arg2) {

        if (arg2 != null) {
            return arg2.toString();
        }
        return null;

    }

p：selectOneMenu validationFailed as response

0 个答案: