inputText 如何从 bean 设置属性？

Question

I have tried to create to create a dialog that I can insert a value to be used on my bean.我试图创建一个对话框，我可以插入一个要在我的 bean 上使用的值。 However, my InputText doesn't update my object on Bean.但是，我的 InputText 不会更新 Bean 上的对象。

This is my InputText :这是我的 InputText ：

What is missing on my inputText ?我的 inputText 缺少什么？ I have tried @this and h:param but I didn't get anything.我试过@this 和 h:param 但我什么也没得到。

This is my xhtml, basically I added a dialog to insert new objects:这是我的 xhtml，基本上我添加了一个对话框来插入新对象：

<?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">
<!-- Composition para poder importar template -->
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://xmlns.jcp.org/jsf/html"
xmlns:f="http://xmlns.jcp.org/jsf/core"
xmlns:p="http://primefaces.org/ui"
xmlns:ui="http://java.sun.com/jsf/facelets"
template="/templates/modeloSistema.xhtml">

<ui:define name="menu">
    <ui:include src="/includes/menuPrincipal.xhtml"></ui:include>
</ui:define>
<ui:define name="conteudo">
    <h:form>
        <p:dataTable emptyMessage="Nenhum Fabricante registrado"
            value="#{MBFabricante.itens}" var="item" paginator="true" rows="10">
            <f:facet name="header">
                Fabricante - Listagem
            </f:facet>
            <p:column headerText="Codigo" sortBy="#{item.codigo}"
                filterBy="#{item.codigo}">
                <p:outputLabel value="#{item.codigo}"></p:outputLabel>
            </p:column>
            <p:column headerText="Descricao" sortBy="#{item.descricao}"
                filterBy="#{item.descricao}">
                <p:outputLabel value="#{item.descricao}"></p:outputLabel>
            </p:column>
            <f:facet name="footer">
                <!-- Utilizar complete para fazer apos a criacao de instanciar fabricante com prepararNovo -->
                <p:commandButton value="Novo" process="@this"
                    actionListener="#{MBFabricante.prepararNovo}"
                    oncomplete="PF('dlgFabNovo').show();" />
            </f:facet>
        </p:dataTable>
    </h:form>

    <!-- O @(body) serve para indicar que o modal deve exercer funcao sobre o modal -->
    <p:dialog widgetVar="dlgFabNovo" closable="true" draggable="true"
        resizable="false" modal="true" appendTo="@(body)"
        header="Fabricante - Novo">
        <h:form>
            <h:panelGrid columns="2">
                <p:outputLabel for="descricao" value="Descricao: "></p:outputLabel>
                <p:inputText id="descricao"
                    value="#{MBFabricante.fabricante.descricao}"></p:inputText>
            </h:panelGrid>
            <!-- action usa metodos criados no manage bean utilizando comandos l # -->
            <p:commandButton value="Gravar" process="@this"
                actionListener="#{MBFabricante.novo}"></p:commandButton>
            <p:commandButton value="Cancelar" onclick="PF('dlgFabNovo').hide();"></p:commandButton>
        </h:form>
    </p:dialog>
</ui:define>
</ui:composition>

This is my Bean, I can add my domain in case you guys think it is necessary:这是我的 Bean，如果你们认为有必要，我可以添加我的域：

package br.com.drogaria.bean;

import java.sql.SQLException;
import java.util.ArrayList;

import javax.annotation.PostConstruct;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ViewScoped;
import javax.faces.model.ListDataModel;

import br.com.drogaria.dao.FabricanteDAO;
import br.com.drogaria.domain.Fabricante;

@ManagedBean(name = "MBFabricante")
@ViewScoped
public class FabrincanteBean {

private Fabricante fabricante;

private ListDataModel<Fabricante> itens;

public ListDataModel<Fabricante> getItens() {
    System.out.println("Passou 1");

    return itens;
}

public void setItens(ListDataModel<Fabricante> itens) {
    System.out.println("Passou 12");

    this.itens = itens;
}

public Fabricante getFabricante() {
    System.out.println("Passou 2");

    return fabricante;
}

public void setFabricante(Fabricante fabricante) {
    System.out.println("Passou 23");

    this.fabricante = fabricante;
}

// Post , esse metodo vai ser chamado antes da pagina ser desenhada.
@PostConstruct
public void prepararPesquisa() {

    try {
        FabricanteDAO dao = new FabricanteDAO();
        ArrayList<Fabricante> lista;
        lista = dao.listar();
        // Converte Arraylist para DataModel
        itens = new ListDataModel<Fabricante>(lista);
    } catch (SQLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

}

public void prepararNovo() {
    fabricante = new Fabricante();
    System.out.println("Preparou fabricante  " + fabricante);
}

public void novo() {
    System.out.println("Passou pelo metodo novo, valor " + fabricante);
    try {
        FabricanteDAO dao = new FabricanteDAO();
        dao.salvar(fabricante);
        prepararPesquisa();
    } catch (SQLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

}

Answer 1

<p:commandButton value="Gravar" process="@this" actionListener="#{MBFabricante.novo}"></p:commandButton>`

Will not process the inputText as you have chosen to only process the commandButton by choosing @this .将不会处理 inputText，因为您已通过选择@this选择仅处理 commandButton 。 Try process="@form" this should include the value from the inputText when you press the commandButton.尝试process="@form"这应该包括当您按下 commandButton 时 inputText 中的值。

Exactly how this works is demonstrated beautifully on the PrimeFaces Showcase, where you can try different process attributes, https://www.primefaces.org/showcase/ui/ajax/process.xhtml PrimeFaces Showcase 展示了它的具体工作原理，您可以在其中尝试不同的流程属性， https://www.primefaces.org/showcase/ui/ajax/process.xhtml

There is also a previous Q/A here that covers this further, Understanding PrimeFaces process/update and JSF f:ajax execute/render attributes这里还有一个以前的 Q/A 进一步介绍了这一点， Understanding PrimeFaces process/update and JSF f:ajax execute/render attributes

inputText 如何从 bean 设置属性？

问题描述

1 个解决方案

解决方案1
1 已采纳 2019-01-07 23:29:39

inputText 如何从 bean 设置属性？

问题描述

1 个解决方案

解决方案1 1 已采纳 2019-01-07 23:29:39

解决方案1
1 已采纳 2019-01-07 23:29:39