当我使用表格的PrimeFaces就地编辑功能编辑行时,似乎没有应用更改。
这是我的代码:
properties.xhtml
<!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"
xmlns:p="http://primefaces.org/ui"
xmlns:c="http://java.sun.com/jsp/jstl/core">
<f:event type="javax.faces.event.PreRenderViewEvent" listener="${propertyManagedBean.preRenderView}"/>
<h:head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Properties</title>
</h:head>
<h:body>
<div id="content" class="left_content">
<h:form>
<p:dataTable id="tbl" var="property" value="#{propertyManagedBean.properties}" paginator="true" rows="10" rowsPerPageTemplate="5,10,20">
<p:ajax event="rowEdit" update="@this" listener="#{propertyManagedBean.propertyRowEdit}"/>
<f:facet name="header">
Properties Manager
</f:facet>
<p:column headerText="Key" >
<h:outputText value="#{property.propKey}" />
</p:column>
<p:column headerText="Value">
<p:cellEditor>
<f:facet name="output">
<h:outputText value="#{property.propValue}" />
</f:facet>
<f:facet name="input">
<p:inputText value="#{property.propValue}" style="width:100%"/>
</f:facet>
</p:cellEditor>
</p:column>
<p:column headerText="Options" style="width:15px">
<p:rowEditor />
</p:column>
</p:dataTable>
</h:form>
</div>
</h:body>
</html>
PropertyManagedBean.java
@ManagedBean
@SessionScoped
public class PropertyManagedBean {
private PropertyJpaController controller;
private List<Property> properties;
/** Creates a new instance of propertyManagedBean */
public PropertyManagedBean() {
controller = new PropertyJpaController();
extractProperties();
}
public void propertyRowEdit(RowEditEvent event) {
Property prop = (Property) event.getObject();
try {
controller.update(prop);
} catch (Exception ex) {
//TODO: Customize work with exceptions
}
extractProperties();
}
public List<Property> getProperties() {
return properties;
}
public void preRenderView() {
HttpSession session = (HttpSession) FacesContext.getCurrentInstance().getExternalContext().getSession(true);
}
private void extractProperties() {
properties = controller.findPropertyEntities();
}
}
在页面上的一行中编辑属性后发生问题。更改此行后,我会在表格中获取属性的旧值。
答案 0 :(得分:3)
我的猜测是controller.update(prop)
发生了一个您未展示的异常,因此更新实际上并未发生。
如果我使用模拟服务快速测试您的代码,它会按预期工作。
的facelet:
<!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"
xmlns:p="http://primefaces.org/ui"
>
<h:head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Properties</title>
</h:head>
<h:body>
<h:form>
<p:dataTable id="tbl" value="#{propertyManagedBean.properties}" var="property" paginator="true" rows="10" rowsPerPageTemplate="5,10,20">
<p:ajax event="rowEdit" update="@this" listener="#{propertyManagedBean.propertyRowEdit}"/>
<f:facet name="header">
Properties Manager
</f:facet>
<p:column headerText="Key" >
#{property.propKey}
</p:column>
<p:column headerText="Value">
<p:cellEditor>
<f:facet name="output">
#{property.propValue}
</f:facet>
<f:facet name="input">
<p:inputText value="#{property.propValue}" style="width:100%"/>
</f:facet>
</p:cellEditor>
</p:column>
<p:column headerText="Options" style="width:15px">
<p:rowEditor />
</p:column>
</p:dataTable>
</h:form>
</h:body>
</html>
支持bean:
@ManagedBean
@SessionScoped
public class PropertyManagedBean {
private PropertyJpaController controller;
private List<Property> properties;
public PropertyManagedBean() {
controller = new PropertyJpaController();
extractProperties();
}
public void propertyRowEdit(RowEditEvent event) {
Property property = (Property) event.getObject();
try {
controller.update(property);
} catch (Exception ex) {
// TODO: Customize work with exceptions
}
extractProperties();
}
public List<Property> getProperties() {
return properties;
}
private void extractProperties() {
properties = controller.findPropertyEntities();
}
}
模拟服务:
public class PropertyJpaController {
private List<Property> properties = new ArrayList<Property>();
{
properties.add(new Property("KeyA", "ValueA"));
properties.add(new Property("KeyB", "ValueB"));
}
public List<Property> findPropertyEntities() {
// Copy list and entries to prevent direct in-memory updating
List<Property> newList = new ArrayList<Property>();
for (Property property : properties) {
newList.add(new Property(property.getPropKey(), property.getPropValue()));
}
return newList;
}
public void update(Property updatedProperty) {
for (Property property : properties) {
if (property.getPropKey().equals(updatedProperty.getPropKey())) {
property.setPropValue(updatedProperty.getPropValue());
}
}
}
}
模拟模型:
public class Property {
private String propKey;
private String propValue;
public Property(String propKey, String propValue) {
this.propKey = propKey;
this.propValue = propValue;
}
public String getPropKey() {
return propKey;
}
public void setPropKey(String propKey) {
this.propKey = propKey;
}
public String getPropValue() {
return propValue;
}
public void setPropValue(String propValue) {
this.propValue = propValue;
}
}
请注意,preRenderView
事件侦听器是不必要的。此外,通常你不会制作支持bean @SessionScoped
,但对于模拟案例,它可以方便地测试更改实际上是'持久'。
这是在JBoss AS 7上使用PrimeFaces 3rc2测试的。
答案 1 :(得分:0)
Primefaces dataTable有一个名为rowEditListener
的属性。您应该使用此属性而不是使用内部<p:ajax>
组件。这可能会解决您的更新问题。
<p:dataTable ... rowEditListener="#{propertyManagedBean.propertyRowEdit}">
编辑:根据用户指南,Primefaces 3.0中似乎不再存在此属性。无视我的回答,但我会离开它,因为这仍然适用于Primefaces 2.2.1,并可能使其他人受益。