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Java Primefaces自动完成具有不同值类型的组件，以获得建议和组件值

java jsf primefaces

Java Primefaces自动完成具有不同值类型的组件，以获得建议和组件值,java,jsf,primefaces,Java,Jsf,Primefaces,我不确定这是否可能。。。但是我想使用autoComplete组件，其中value属性是String类型，completeMethod返回一些重对象的列表 我还需要使用forceSelection=“false” 这是我认为应该起作用的（但没有）： 如果您为Demandeur制作一个转换器，这将起作用实际上，问题似乎在于这一部分 itemValue="#{demandeurItem.nom}" 如果itemValue是项目的名称，则转换器将尝试从字符串而不是对象转换。因此，下面的转换器方法将接收

我不确定这是否可能。。。但是我想使用autoComplete组件，其中value属性是String类型，completeMethod返回一些重对象的列表

我还需要使用
forceSelection=“false”

这是我认为应该起作用的（但没有）：

如果您为
Demandeur

制作一个转换器，这将起作用实际上，问题似乎在于这一部分

itemValue="#{demandeurItem.nom}"
如果itemValue是项目的名称，则转换器将尝试从字符串而不是对象转换。因此，下面的转换器方法将接收“value”=string，而不是预期的Demandeur

public String getAsString(FacesContext facesContext, UIComponent uiComponent, Object value) throws ConverterException
我已经尝试了下面的代码，我认为这是你需要的。我在tomee 1.6.0上使用primefaces 4.0

转换器

import java.io.Serializable;

import javax.ejb.EJB;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.RequestScoped;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.convert.Converter;
import javax.faces.convert.ConverterException;

@ManagedBean
@RequestScoped
public class DemandeurConverter implements Converter, Serializable {

    private static final long   serialVersionUID    = 1L;

    @EJB
    Demandeurs                  ejb;

    @Override
    public Object getAsObject(FacesContext facesContext, UIComponent uiComponent, String value) throws ConverterException {
        if (value == null || value.length() == 0) {
            return null;
        } else {
            return ejb.getData().get(Long.parseLong(value));
        }
    }

    @Override
    public String getAsString(FacesContext facesContext, UIComponent uiComponent, Object value) throws ConverterException {
        System.out.println(value.getClass());
        if (value == null) {
            return null;
        } else {
            return ((Demandeur) value).getId().toString();
        }
    }
}
托管bean

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import java.util.Map.Entry;

import javax.ejb.EJB;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ViewScoped;

@ManagedBean
@ViewScoped
public class UtilisateurDemandeurCtrl implements Serializable {

    private static final long   serialVersionUID    = -3027573774106311465L;

    @EJB 
    private Demandeurs                  ejb;

    private Demandeur critereRechercheDemandeur;

    public List<Demandeur> completeDemandeur(String query) {
        List<Demandeur> l = new ArrayList<Demandeur>();

        for(Entry<Long, Demandeur> entryset:ejb.getData().entrySet()){
            if (entryset.getValue().getNom().contains(query)){
                l.add(entryset.getValue());
            }
        }

        return l;
    }

    public Demandeur getCritereRechercheDemandeur() {
        return critereRechercheDemandeur;
    }

    public void setCritereRechercheDemandeur(Demandeur critereRechercheDemandeur) {
        this.critereRechercheDemandeur = critereRechercheDemandeur;
    }
}
还有xhtml

<?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://java.sun.com/jsf/core"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:ui="http://java.sun.com/jsf/facelets"
    xmlns:p="http://primefaces.org/ui">
<h:head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
    <title>Test</title>
    <h:outputScript library="js" name="common.js" />
</h:head>
<h:body>

    <h:form id="somePrefix">

        <p:autoComplete 
            id="it_demandeur"
            value="#{utilisateurDemandeurCtrl.critereRechercheDemandeur}"
            var="demandeurItem"
            converter="#{demandeurConverter}"
            itemLabel="#{demandeurItem ne null ? demandeurItem.numeroOW.toString().concat(' - ').concat(demandeurItem.nom) : ''}"
            itemValue="#{demandeurItem}"
            forceSelection="true"
            completeMethod="#{utilisateurDemandeurCtrl.completeDemandeur}">

            <p:column>
              #{demandeurItem.numeroOW} - #{demandeurItem.nom}
            </p:column>
        </p:autoComplete>

    </h:form>
</h:body>
</html>


试验
#{demandeurItem.numeroOW}-{demandeurItem.nom}
我也有同样的问题

这给了我一个错误：itemLabel=“#{user.fullName}”：在java.lang.String类型上找不到属性“fullName”

只有在提交后更新自动完成组件（以显示验证消息）时，才会出现此问题。如果从commandButton中删除“update”属性，它就可以正常工作

<p:panel id="resourceConfigNewFormPanel">
    <p:autoComplete id="newUsername" value="#{userResourceConfigurationListBean.resourceConfig.username}" completeMethod="#{userResourceConfigurationListBean.autocompleteUser}" var="user" itemLabel="#{user.fullName}" itemValue="#{user.userName}" forceSelection="true" required="true">
    </p:autoComplete>
    <p:commandButton value="..." action="..." update="resourceConfigNewForm" oncomplete="if (args &amp;&amp; !args.validationFailed) resourceConfigNewDlg.hide()" />
这在有更新和无更新的情况下都适用：

<p:autoComplete id="newUsername" value="#{userResourceConfigurationListBean.resourceConfig.user}" completeMethod="#{userResourceConfigurationListBean.autocompleteUser}" var="user" itemLabel="#{user.fullName}" itemValue="#{user}" converter="#{userNameToUserConverter}" forceSelection="true" required="true">
</p:autoComplete>
您好，我用我尝试使用的转换器更新了我的帖子，但在提交时出现了相同的错误。您是否将转换器设置为
？是的，我设置了转换器属性，并且我可以在调试模式下通过两个重写函数跟踪代码 
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import java.util.Map.Entry;

import javax.ejb.EJB;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ViewScoped;

@ManagedBean
@ViewScoped
public class UtilisateurDemandeurCtrl implements Serializable {

    private static final long   serialVersionUID    = -3027573774106311465L;

    @EJB 
    private Demandeurs                  ejb;

    private Demandeur critereRechercheDemandeur;

    public List<Demandeur> completeDemandeur(String query) {
        List<Demandeur> l = new ArrayList<Demandeur>();

        for(Entry<Long, Demandeur> entryset:ejb.getData().entrySet()){
            if (entryset.getValue().getNom().contains(query)){
                l.add(entryset.getValue());
            }
        }

        return l;
    }

    public Demandeur getCritereRechercheDemandeur() {
        return critereRechercheDemandeur;
    }

    public void setCritereRechercheDemandeur(Demandeur critereRechercheDemandeur) {
        this.critereRechercheDemandeur = critereRechercheDemandeur;
    }
}

import java.util.HashMap;
import java.util.Map;

import javax.ejb.Singleton;


@Singleton
public class Demandeurs {

    private static final Map<Long,Demandeur> data = new HashMap<Long,Demandeur>(){
        private static final long   serialVersionUID    = -4394378761837292672L;

        {
             put(1L,new Demandeur(1L,"ooooooooooone",111));
             put(2L,new Demandeur(2L,"ttttttttttttwo",222));
        }
    };

    public static Map<Long, Demandeur> getData() {
        return data;
    }


}

import java.io.Serializable;


public class Demandeur implements Serializable{

    private static final long   serialVersionUID    = 4023658749746098762L;
    private Long id;
    private String nom;
    private Integer numeroOW;
    public Demandeur() {}

    public Demandeur(Long id, String nom, Integer numeroOW) {
        super();
        this.id = id;
        this.nom = nom;
        this.numeroOW = numeroOW;
    }

    public Long getId() {
        return id;
    }
    public void setId(Long id) {
        this.id = id;
    }
    public String getNom() {
        return nom;
    }
    public void setNom(String nom) {
        this.nom = nom;
    }
    public Integer getNumeroOW() {
        return numeroOW;
    }
    public void setNumeroOW(Integer numeroOW) {
        this.numeroOW = numeroOW;
    }
    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((id == null) ? 0 : id.hashCode());
        result = prime * result + ((nom == null) ? 0 : nom.hashCode());
        result = prime * result + ((numeroOW == null) ? 0 : numeroOW.hashCode());
        return result;
    }
    @Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (getClass() != obj.getClass())
            return false;
        Demandeur other = (Demandeur) obj;
        if (id == null) {
            if (other.id != null)
                return false;
        } else if (!id.equals(other.id))
            return false;
        if (nom == null) {
            if (other.nom != null)
                return false;
        } else if (!nom.equals(other.nom))
            return false;
        if (numeroOW == null) {
            if (other.numeroOW != null)
                return false;
        } else if (!numeroOW.equals(other.numeroOW))
            return false;
        return true;
    }

}

<?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://java.sun.com/jsf/core"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:ui="http://java.sun.com/jsf/facelets"
    xmlns:p="http://primefaces.org/ui">
<h:head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
    <title>Test</title>
    <h:outputScript library="js" name="common.js" />
</h:head>
<h:body>

    <h:form id="somePrefix">

        <p:autoComplete 
            id="it_demandeur"
            value="#{utilisateurDemandeurCtrl.critereRechercheDemandeur}"
            var="demandeurItem"
            converter="#{demandeurConverter}"
            itemLabel="#{demandeurItem ne null ? demandeurItem.numeroOW.toString().concat(' - ').concat(demandeurItem.nom) : ''}"
            itemValue="#{demandeurItem}"
            forceSelection="true"
            completeMethod="#{utilisateurDemandeurCtrl.completeDemandeur}">

            <p:column>
              #{demandeurItem.numeroOW} - #{demandeurItem.nom}
            </p:column>
        </p:autoComplete>

    </h:form>
</h:body>
</html>

<p:panel id="resourceConfigNewFormPanel">
    <p:autoComplete id="newUsername" value="#{userResourceConfigurationListBean.resourceConfig.username}" completeMethod="#{userResourceConfigurationListBean.autocompleteUser}" var="user" itemLabel="#{user.fullName}" itemValue="#{user.userName}" forceSelection="true" required="true">
    </p:autoComplete>
    <p:commandButton value="..." action="..." update="resourceConfigNewForm" oncomplete="if (args &amp;&amp; !args.validationFailed) resourceConfigNewDlg.hide()" />

<p:autoComplete id="newUsername" value="#{userResourceConfigurationListBean.resourceConfig.user}" completeMethod="#{userResourceConfigurationListBean.autocompleteUser}" var="user" itemLabel="#{user.fullName}" itemValue="#{user}" converter="#{userNameToUserConverter}" forceSelection="true" required="true">
</p:autoComplete>