【发布时间】：2012-03-16 05:00:50
【问题描述】：
我在显示由 ui 组件触发的验证错误时遇到问题，这些组件是 嵌套在数据表中。
这是xhtml页面，其中包含一个带有静态上部的表单，可以在其中输入地址。
在它下方显示订购商品，用户可以在其中输入他们想要订购的商品数量。 这些项目是从数据库表中检索出来的，并显示在 dataTable 中。
<!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:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core">
<ui:composition template="../templates/_standard.xhtml">
<ui:define name="pageHeadline">
#{msg['supplies.module_headline']}
</ui:define>
<ui:define name="pageContent">
<h:form id="supplies" styleClass="editForm" rendered="#{!suppliesHandler.sent}">
<h:panelGrid
columns="2"
columnClasses="tdLabel,tdValue"
rowClasses="row"
styleClass="leftPane"
>
<!-- row 1 -->
#{msg['supplies.account']}:
<h:panelGroup>
<h:inputText id="account" value="#{supply.contact.account}" tabindex="1" styleClass="text"/>
<h:message for="account" styleClass="error"/>
</h:panelGroup>
<!-- row 2 -->
#{msg['supplies.company']}:
<h:panelGroup>
<h:inputText id="company" value="#{supply.contact.company}" tabindex="2" styleClass="text"/>
<h:message for="company" styleClass="error"/>
</h:panelGroup>
<!-- row 3 -->
#{msg['supplies.street']}:
<h:panelGroup>
<h:inputText id="street" value="#{supply.contact.street}" tabindex="3" styleClass="text"/>
<h:message for="street" styleClass="error"/>
</h:panelGroup>
<!-- row 4 -->
#{msg['supplies.postcode']}:
<h:panelGroup>
<h:inputText id="postcode" value="#{supply.contact.postcode}" tabindex="4" styleClass="text"/>
<h:message for="postcode" styleClass="error"/>
</h:panelGroup>
<!-- row 5 -->
#{msg['supplies.city']}:
<h:panelGroup>
<h:inputText id="city" value="#{supply.contact.city}" tabindex="5" styleClass="text"/>
<h:message for="city" styleClass="error"/>
</h:panelGroup>
</h:panelGrid>
<h:panelGrid
columns="2"
columnClasses="tdLabel,tdValue"
rowClasses="row"
styleClass="rightPane"
>
<!-- row 2 -->
#{msg['supplies.contact']}:
<h:panelGroup>
<h:inputText id="contact" value="#{supply.contact.contact}" tabindex="6" styleClass="text"/>
<h:message for="contact" styleClass="error"/>
</h:panelGroup>
<!-- row 3 -->
#{msg['supplies.phone']}:
<h:panelGroup>
<h:inputText id="phone" value="#{supply.contact.phone}" tabindex="7" styleClass="text"/>
<h:message for="phone" styleClass="error"/>
</h:panelGroup>
<!-- row 4 -->
#{msg['supplies.email']}:
<h:panelGroup>
<h:inputText id="email" value="#{supply.contact.email}" tabindex="8" styleClass="text">
<f:validator validatorId="com.abc.myproduct.be.ui.validator" />
</h:inputText>
<h:message for="email" styleClass="error"/>
</h:panelGroup>
<!-- row 5 -->
#{msg['supplies.fax']}:
<h:panelGroup>
<h:inputText id="fax" value="#{supply.contact.fax}" tabindex="9" styleClass="text"/>
<h:message for="fax" styleClass="error"/>
</h:panelGroup>
</h:panelGrid>
<div class="spacer"></div>
<h:dataTable id="items"
styleClass="listing_large"
value="#{supply.supplyItems}"
headerClass="heading"
var="item">
<h:column>
<f:facet name="header">
#{msg['supplies.id']}
</f:facet>
<h:outputText value="#{item.supply_id}" />
</h:column>
<h:column>
<f:facet name="header">
#{msg['supplies.amount']}
</f:facet>
<h:inputText value="#{item.amount}" id="amount" styleClass="text" size="3" maxlength="3" style="width:50px"/>
</h:column>
<h:column>
<f:facet name="header">
#{msg['supplies.description']}
</f:facet>
<h:outputText value="#{item.description}" />
</h:column>
</h:dataTable>
<div><br/>
<h:messages globalOnly="true" layout="table" styleClass="error"/>
</div>
<h:panelGrid
columns="1"
columnClasses="tdLabel,tdValue"
rowClasses="row">
<!-- row 2 -->
<h:panelGroup>
<h:commandButton value="#{msg['general.submit']}" action="#{suppliesHandler.submitMessage}" styleClass="button"/>
</h:panelGroup>
</h:panelGrid>
</h:form>
<h:messages globalOnly="true" layout="table" rendered="#{suppliesHandler.sent}"/>
</ui:define>
</ui:composition>
</html>
表单地址部分的验证非常完美。 只有这部分表单的消息没有显示：
<h:dataTable id="items"
styleClass="listing_large"
value="#{supply.supplyItems}"
headerClass="heading"
var="item">
<h:column>
<f:facet name="header">
#{msg['supplies.id']}
</f:facet>
<h:outputText value="#{item.supply_id}" />
</h:column>
<h:column>
<f:facet name="header">
#{msg['supplies.amount']}
</f:facet>
<h:inputText value="#{item.amount}" id="amount" styleClass="text" size="3" maxlength="3" style="width:50px"/>
</h:column>
<h:column>
<f:facet name="header">
#{msg['supplies.description']}
</f:facet>
<h:outputText value="#{item.description}" />
</h:column>
</h:dataTable>
正在通过 BeanValidation 进行验证：
public class SupplyItem implements Serializable {
private static final long serialVersionUID = 1L;
@Id
private long supply_id;
private String description;
private int orderNo;
@Transient
@Max(value=200)
private int amount;
/*
* constructor
*/
public SupplyItem() {
super();
}
public long getSupply_id() {
return supply_id;
}
public void setSupply_id(long supply_id) {
this.supply_id = supply_id;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public int getOrderNo() {
return orderNo;
}
public void setOrderNo(int orderNo) {
this.orderNo = orderNo;
}
public int getAmount() {
return amount;
}
public void setAmount(int amount) {
this.amount = amount;
}
}
它实际上正在被验证，但是没有显示消息......
12:29:45,860 信息 [javax.enterprise.resource.webcontainer.jsf.renderkit] (http--127.0.0.1-8080-2) 警告：FacesMessage(s) wurde(n) in die Warteschlange gestellt, aber möglicherweise nicht angezeigt . sourceId=supplies:items:0:amount[severity=(ERROR 2), summary=(允许的最大值为 200), detail=(允许的最大值为 200)] sourceId=supplies:items:1:amount[severity=(ERROR 2), summary=(supplies:items:1:amount: 'a' 必须是一个或多个数字组成的数字。), detail=(supplies:items :1:amount: 'a' 必须是介于 -2147483648 和 2147483647 之间的数字 例如：9346)]尝试动态设置输入字段的 id 并结合 h:message for="" 不起作用，通过 h:messages globalOnly="true" 也没有显示。
任何帮助将不胜感激。
【问题讨论】：