我试图遵循f:param 或 f:attribute 对 primefaces 自动完成的支持中的解决方案?将参数传递给 primefaces 3.3.1 自动完成组件但没有成功。如果我在 UIComponent.getCurrentComponent().getAttributes 返回的 Map 中进行迭代,它不包含我在 .xhtml 文件中设置的属性名称,因此当我尝试获取该属性时会得到一个空指针。在上述解决方案之后,primefaces 的实现是否有任何变化?
我将 Eclipse Indigo 与 Glassfish 3.1.2 和 Mojarra 2.0.9 一起使用。
我的部分代码
html:
<ui:composition 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:pe="http://primefaces.org/ui/extensions"
template="WEB-INF/template.xhtml">
...
<p:autoComplete
id="sourceSubMemberLookup" value="#{transactionTransferBacking.sourceSubMember}"
size="64"
completeMethod="#{transactionTransferBacking.completeSourceOpSubMember}"
var="smb" itemLabel="#{smb.displayText}" itemValue="#{smb}"
converter="opSubMemberConverter"
forceSelection="true" dropdown="true"
required="true" rendered="#{loggedInUser.subMemberType eq 1}" >
<f:attribute name="attrSourceMemberId" value="#{transactionTransferBacking.sourceMember.Id">
</p:autoComplete>
...
</ui:composition>
爪哇:
package com.mysoft.backing;
import java.io.Serializable;
import javax.faces.context.FacesContext;
import javax.faces.context.Flash;
import javax.servlet.http.HttpServletRequest;
import javax.enterprise.context.RequestScoped;
@Named
@ManagedBean
@RequestScoped
public class TransactionTransferBacking implements Serializable {
...
public List<OpSubMember> completeSourceOpSubMember(String query) {
List<OpSubMember> members=null;
//Retrieve list of submembers based on partial user input (autocomplete)
//Based on loggedInUser own member's memberId
FacesContext context = FacesContext.getCurrentInstance();
if (context==null) this.getLogger().debug("completeSourceOpSubMeber: faces is null");
UIComponent current = UIComponent.getCurrentComponent(context);
this.getLogger().debug("completeSourceOpSubMember: currentComponent="+current.getId());
//Map<Object, Object> attrMap = context.getAttributes();
Map<String, Object> attrMap = current.getAttributes();
for (Map.Entry entry : attrMap.entrySet()) {
this.getLogger().debug("completeSourceOpSubMember: attrMap.Key="+entry.getKey());
}
int memberId = (int) attrMap.get("attrSourceMemberId");
this.getLogger().debug("completeSourceOpSubMember: MemberId from attribute = "+memberId);
...
return members;
}
}
日志正确地将当前组件名称打印为所需的 AutoComplete,但问题是“attrSourceMemberId”不在“attrMap”映射中,如日志中打印的那样。
感谢你们。