![](/img/trans.png)
[英]when I refresh the page that contains a datatable I lose the new data added Primefaces JSF
[英]JSF (Primefaces) Button in datatable to new page with data
和素面。
我與用戶有一個簡單的數據表。 我想要每行“添加項目”中的按鈕導航到新頁面,用戶可以在其中輸入項目詳細信息。 創建新商品時必須使用客戶ID。
<p:dataTable id="dataTable" var="customer"
value="#{customerController.lazyCustomerModel}"
rowKey="#{customer.id}" styleClass="userDataTableStyle"
paginator="true" rows="10"
selection="#{customerController.selectedCustomers}"
paginatorTemplate="{CurrentPageReport} {FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink} {RowsPerPageDropdown}"
lazy="true" rowsPerPageTemplate="10,15,50">
<p:column selectionMode="multiple" style="width:18px" />
<p:column>
<f:facet name="header">
<h:outputText value="Id" />
</f:facet>
<h:outputText value="#{customer.id}" />
</p:column>
<p:column>
<f:facet name="header">
<h:outputText value="Phone" />
</f:facet>
<h:outputText value="#{customer.phone}" />
</p:column>
<p:column>
<f:facet name="header">
<h:outputText value="Name" />
</f:facet>
<h:outputText value="#{customer.name}" />
</p:column>
<p:column>
<!-- Here a button to new page for adding item -->
</p:column>
<f:facet name="footer">
<p:commandButton value="Delete Users"
actionListener="#{customerController.deleteUsers}"
update="dataTable" icon="ui-icon-trash" />
</f:facet>
</p:dataTable>
嵌套的方法是什么?我可以直接在URL中使用客戶ID導航到新頁面嗎? 還是應該使用ID提交給控制器,然后重定向?
更新:
所以我嘗試使用viewParam:當我單擊New Item按鈕時,URL中沒有傳遞任何參數。
如果我手動輸入URL:例如/newItem.jsf?customerId=2
方法
public void setCustomerId(String customerId) {
this.customerId = customerId;
}
在NewItemController中以id 2調用,然后按保存按鈕在新項目中鍵入數據,但現在customerId為null
customers.xhtml
<ui:define name="content">
<f:metadata>
<f:viewParam name="customerId" value="#{customerController.customerEnt.id}" />
</f:metadata>
<h:form id="customers" prependId="false" includeViewParams="true">
<p:panelGrid styleClass="panelGridCenter">
<f:facet name="header">
<p:row>
<p:column style="text-align: center;" colspan="2">Search Customer</p:column>
</p:row>
</f:facet>
// Rows with search fields
<f:facet name="footer">
<p:row>
<p:column style="text-align: center;" colspan="2">
<p:commandButton value="Search"
action="#{customerController.search}"
update=":customers:dataTable" />
</p:column>
</p:row>
</f:facet>
</p:panelGrid>
<br />
<h:outputText
value="Result is more than 100, only the first 100 results are displayed!"
rendered="#{customerController.searchResultSize > 100}" />
<h:outputText value="#{customerController.searchResultSize}" />
<br />
<p:dataTable id="dataTable" var="customer"
value="#{customerController.customers}" rowKey="#{customer.id}"
styleClass="userDataTableStyle" paginator="true" rows="10"
selection="#{customerController.selectedCustomers}"
paginatorTemplate="{CurrentPageReport} {FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink} {RowsPerPageDropdown}"
lazy="true" rowsPerPageTemplate="10,15,50">
// Columns
<p:column>
<p:commandButton value="New Item" action="#{customerController.newItem()}"/>
</p:column>
</p:dataTable>
</h:form>
</ui:define>
CustomerController僅在此處顯示重要部分...
@SuppressWarnings("serial")
@SessionScoped
@Named
public class CustomerController implements Serializable {
private Long customerId;
public String newItem() {
return "newItem?faces-redirect=true&includeViewParams=true";
}
public Long getCustomerId() {
return customerId;
}
public void setCustomerId(Long customerId) {
this.customerId = customerId;
}
}
newItem.xhtml
<?xml version="1.0" encoding="UTF-8"?>
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:p="http://primefaces.org/ui"
template="/WEB-INF/templates/default.xhtml">
<div class="center">
<ui:define name="content">
<f:metadata>
<f:viewParam name="customerId" value="#{newItemController.customerId}" />
</f:metadata>
<h:form id="item">
<p:messages id="messages" />
<p:panelGrid styleClass="panelGridCenter">
...
</p:panelGrid>
</h:form>
</ui:define>
</div>
</ui:composition>
NewItemController
@SuppressWarnings("serial")
@ViewScoped
@Named
public class NewItemController implements Serializable {
private String customerId;
public void save() throws Exception {
try {
CustomerEnt customerEnt = null;
if (StringUtils.isNotBlank(customerId)) {
customerEnt = customerDas.find(Long.parseLong(customerId));
} else {
throw new Exception("Customer id not set when creating a new item");
}
itemEnt.setCustomerEnt(customerEnt);
serviceSLSB.save(itemEnt);
} catch (Exception e) {
String errorMessage = getRootErrorMessage(e);
FacesMessage m = new FacesMessage(FacesMessage.SEVERITY_ERROR, errorMessage, "Saving unsuccessful");
facesContext.addMessage(null, m);
}
}
public String getCustomerId() {
return customerId;
}
public void setCustomerId(String customerId) {
this.customerId = customerId;
}
}
您可以同時執行以下操作,將參數傳遞給控制器中的Bean,您可以像這樣進行操作:
<h:commandButton value="Link" action="#{formBean.someAction}">
<f:param name="customerId" value="123456" />
</h:commandButton>
然后在表單bean上使用@ManagedProperty
:
@ManagedProperty(value = "#{param.customerId}")
private String customerId;
... needs getters and setters ...
或者,您可以使用帶有直接GET和參數的鏈接來完成此操作,然后在目標頁面上讀取GET參數並將其保存在Bean中,如下所示(請參見此文章 ):
<f:metadata>
<f:viewParam name="customerId" value="#{formBeanbean.customerId}" />
</f:metadata>
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.