Question

我正在使用PrimeFaces 4.0的JSF-2.1，并尝试在下拉列表上实现部分提交，该下拉列表根据所选值填充另一个下拉列表。 ajax更改事件在第一次将ip从“select”更改为某个ip时触发并填充dstn下拉列表，但是当我第二次更改ip时，事件不会被触发。

<html 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">
    <f:view contentType="text/html">
        <h:head>
        </h:head>
    <h:body>
    <h:form>
                        <p:messages id="validations" />
    <h:outputLabel for="ip" value="Source:"></h:outputLabel>
                            <p:selectManyMenu id="ip" value="#{inputBean.ip}"
                                required="true" requiredMessage="Enter Source">
                                <f:selectItems value="#{inputBean.ipMenu}" />
                                <p:ajax listener="#{inputBean.populateDstn}" event="change" 
                                    update="dstn" process="@this" partialSubmit="true"/>
                            </p:selectManyMenu>
                            <h:outputLabel for="dstn" value="Destination:"></h:outputLabel>
                            <p:selectManyMenu id="dstn" value="#{inputBean.dstn}"
                                required="true" requiredMessage="Enter Destination">
                                <f:selectItems value="#{inputBean.dstnMenu}" />
                            </p:selectManyMenu>
    </h:form>
    </h:body>
    </f:view>
    </html>

支持bean

 @ManagedBean
    @ViewScoped

    public class InputBean implements Serializable
    {
    private static final long serialVersionUID = 1L;
        private List<Long> ip;
        private Map<String, Long> ipMenu;
        private List<Long> dstn;
        private Map<String, Long> dstnMenu;
        @ManagedProperty("#{dataBase}")
    private transient DataBase db;

        private StringBuilder query;


    @PostConstruct
        public void init()
        {
    ipMenu.put("Select", null);
            dstnMenu.put("Select", null);
    try
            {
Connection connection = null;
            ResultSet rs = null;
            PreparedStatement pst_query = null;
                        query.setLength(0);
                connection = db.getConnection();
                query.append("SELECT DISTINCT IPADDRESS FROM ADDR ORDER BY IPADDRESS ");
                pst_query = connection.prepareStatement(query.toString());
                rs = pst_query.executeQuery();
                while (rs.next())
                {
                    ipMenu.put(rs.getLong("IPADDRESS")), rs.getLong("IPADDRESS"));

                }
                rs.close();
                query.setLength(0);
                pst_query.close();
                connection.close();
            }
            catch (SQLException e)
            {
                e.printStackTrace();
            }
    }
    //getters and setters

    public void populateDstn()
        {
            System.out.println("ipaddr : " + this.ip);
            try
            {
                dstnMenu.clear();
Connection connection = null;
        ResultSet rs = null;
        PreparedStatement pst_query = null;
                connection = db.getConnection();
                for (int i = 0; i < ip.size(); i++)
                {
                query.append("SELECT DISTINCT DSTN FROM ADDR " + "WHERE IPADDRESS= '" + this.ip.get(i) + "'  ORDER BY DSTN ");
                pst_query = connection.prepareStatement(query.toString());
                rs = pst_query.executeQuery();
                while (rs.next())
                {
                    dstnMenu.put(rs.getLong("DSTN"), rs.getLong("DSTN"));
                }
                rs.close();
                query.setLength(0);
                pst_query.close();
                connection.close();
                }
            }
            catch (SQLException e)
            {
                FacesContext.getCurrentInstance().addMessage("tableplot:validations", new FacesMessage("Problem fetching Destinations"));
                e.printStackTrace();
            }

        }
    }

错误

Uncaught ReferenceError: cfgx is not defined primefaces.js.xhtml?ln=primefaces:1
    PrimeFaces.createWidget primefaces.js.xhtml?ln=primefaces:1
    PrimeFaces.cw primefaces.js.xhtml?ln=primefaces:1
    (anonymous function)
    (anonymous function) jquery.js.xhtml?ln=primefaces:14
    bG.extend.globalEval jquery.js.xhtml?ln=primefaces:14
    (anonymous function) jquery.js.xhtml?ln=primefaces:21
    bG.extend.each jquery.js.xhtml?ln=primefaces:14
    bG.fn.extend.domManip jquery.js.xhtml?ln=primefaces:21
    bG.fn.extend.append jquery.js.xhtml?ln=primefaces:21
    (anonymous function) jquery.js.xhtml?ln=primefaces:21
    bG.extend.each jquery.js.xhtml?ln=primefaces:14
    bG.fn.bG.each jquery.js.xhtml?ln=primefaces:14
    bG.fn.extend.replaceWith jquery.js.xhtml?ln=primefaces:21
    PrimeFaces.ajax.AjaxUtils.updateElement primefaces.js.xhtml?ln=primefaces:1
    PrimeFaces.ajax.AjaxResponse primefaces.js.xhtml?ln=primefaces:1
    (anonymous function) primefaces.js.xhtml?ln=primefaces:1
    bZ jquery.js.xhtml?ln=primefaces:14
    b7.fireWith jquery.js.xhtml?ln=primefaces:14
    ca jquery.js.xhtml?ln=primefaces:21
    bZ jquery.js.xhtml?ln=primefaces:21

Ajax更改事件侦听器未第二次触发

0 个答案: