Question

我知道这已经解决了这个问题，但我不知道为什么我的代码无法正常工作

我有两个列表，我希望当第一个更改时，其他人更新这是我的代码

<h:selectOneMenu id="e4" styleClass="col-md-5" value="#{categoryModel.selectedMenu}">
    <f:selectItem />
    <f:selectItems value="#{categoryModel.catFinanceVect}" var="catFinance"itemLabel="#{catFinance.designation}" itemValue="#{catFinance.ligne}" />
    <!--  <a4j:ajax event="valueChange" render="e3" execute="@this" />-->
    <f:ajax event="valueChange" execute="@this" render="e3" listener="#{categoryModel.getCatItList}"/>
</h:selectOneMenu>
<div class="col-md-1"></div>
<h:selectOneMenu id="e3" styleClass="col-md-6">
    <f:selectItem />
    <f:selectItems value="#{categoryModel.catItVect}" var="catIt"itemLabel="#{catIt.designation}" itemValue="#{catIt.designation}" />
</h:selectOneMenu>

这是我的支持豆：

@ManagedBean
@SessionScoped
public class CategoryModel {


    private CatFinance catFinance= new CatFinance();
    private Vector<CatFinance> catFinanceVect = new Vector<CatFinance>();
    private CatIt catIt= new CatIt();
    private Vector<CatIt> catItVect = new Vector<CatIt>();
    private Integer selectedMenu;



    public CategoryModel() {
        super();
        // TODO Auto-generated constructor stub
    }


    public CatFinance getCatFinance() {
        return catFinance;
    }


    public void setCatFinance(CatFinance catFinance) {
        this.catFinance = catFinance;
    }


    public Vector<CatFinance> getCatFinanceVect() {
        return catFinanceVect;
    }


    public void setCatFinanceVect(Vector<CatFinance> catFinanceVect) {
        this.catFinanceVect = catFinanceVect;
    }

public CatIt getCatIt() {
        return catIt;
    }


    public void setCatIt(CatIt catIt) {
        this.catIt = catIt;
    }


    public Vector<CatIt> getCatItVect() {
        return catItVect;
    }


    public void setCatItVect(Vector<CatIt> catItVect) {
        this.catItVect = catItVect;
    }



public Integer getSelectedMenu() {
        return selectedMenu;
    }


    public void setSelectedMenu(Integer selectedMenu) {
        this.selectedMenu = selectedMenu;
    }


public void getCatFinanceList(){

        this.setCatFinance(new CatFinance());
        CatFinanceService catFinanceService = (CatFinanceService) SpringDaoCtxFactory.getDaoContext().getBean("CatFinanceService");
        this.getCatFinanceVect().clear();

        try {
            this.getCatFinanceVect().addAll(catFinanceService.getCatFinanceList());
        } catch (Exception e) {
            e.printStackTrace();
        }

    }

        public void getCatItList(AjaxBehaviorEvent event){

            this.setCatIt(new CatIt());
            CatItService catItService = (CatItService) SpringDaoCtxFactory.getDaoContext().getBean("CatItService");
            this.getCatItVect().clear();
            System.out.println("aaaa");
            try {
                this.getCatItVect().addAll(catItService.getCatItList(2));
            } catch (Exception e) {
                e.printStackTrace();
            }

        }
@PostConstruct
public void init(){
    getCatFinanceList();
}

}

如果有人可以帮忙或者给我一个如何做的好的指导我将非常感激提前谢谢

Answer 1

f:ajax事件无效。它应为change（或为change默认为h:selectOneMenu为空。）

<f:ajax execute="@this" render="e3" listener="#{categoryModel.getCatItList}"/>

如何在jsf中更改另一个时更新selectOneMenu

1 个答案: