JSF 多个组合框问题

Question

我对多个组合框有疑问，而且我也在使用 primefaces。我的代码如下；

xhtml页面：

<f:view xmlns="http://www.w3.org/19399/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:p="http://primefaces.prime.com.tr/ui"
xmlns:pm="http://primefaces.prime.com.tr/mobile"
contentType="text/html">

<pm:page title="Title">


    <pm:view id="organizationView" swatch="b">
        <pm:header title="Title">
            <f:facet name="right">
                <pm:button value="Logout" icon="minus" />
            </f:facet>
        </pm:header>

        <pm:content>
            <h:form id="organizationForm" prependId="false">
                <p:separator />

                <h:selectOneMenu id="company" value="#{myView.selected}" >
                    <f:selectItem value="#{null}" itemLabel="Select company..." noSelectionOption="true" />
                    <f:selectItems value="#{myView.companyList}" 
                        var="company" itemLabel="#{company.name}" itemValue="#{company.companyId}"/>
                    <p:ajax immediate="true" update="organization" listener="#{myView.loadOrganization}" />
                </h:selectOneMenu>

                <h:selectOneMenu id="organization" value="#{myView.organization.orgId}">
                    <f:selectItem itemLabel="Select Organization..." itemValue="" />
                    <f:selectItems value="#{myView.orgList}" 
                        var="organization" itemLabel="#{organization.name}" itemValue="#{organization.orgId}"/>
                </h:selectOneMenu>

                <p:separator />
            </h:form>
        </pm:content>
    </pm:view>

</pm:page>

和 backing-bean 是这样的：

@Component("myView")
@Scope("view")

public class MyView implements Serializable {

private Long selected;

private List<Company> companyList;
private Company company;
private Organization organization;
private List<Organization> orgList;

@Autowired
private MyViewService myViewService;

public MyView() {

}

@PostConstruct
public void init(){
    companyList = myViewService.findAllCompany();

}

public void loadOrganization() {
    if(selected != null && selected >0L)
        orgList = myViewService.findGroupsByCompanyId(selected);
}

public void setCompany(Company company) {
    this.company = company;
}

public Company getCompany() {
    return company;
}

public List<Company> getCompanyList() {
    return companyList;
}

public void setCompanyList(List<Company> companyList) {
    this.companyList = companyList;
}

public List<Organization> getOrgList() {
    return orgList;
}

public void setOrgList(List<Organization> orgList) {
    this.orgList = orgList;
}

public Organization getOrganization() {
    return organization;
}

public void setOrganization(Organization organization) {
    this.organization = organization;
}

public myViewService getMyViewService() {
    return myViewService;
}

public void setMyViewService(MyViewService myViewService) {
    this.myViewService = myViewService;
}

public Long getSelected() {
    return selected;
}

public void setSelected(Long selected) {
    this.selected = selected;
}

}

当我更改公司组合框时，它调用 loadOrganization() 方法，但 selected 值设置为 null。我如何从公司组合框中获取选定值？ 谢谢大家的帮助。

Answer 1

如果您希望在使用提交的值更新模型值后调用侦听器，请从 中删除 immediate="true" 属性。