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从 primefaces 组件获取值

发布于 2025-01-07 06:33:33 字数 7764 浏览 0 评论 0原文

我有facelets 页面和与其关联的托管bean。 我已经使用了 primefaces 组件，我的问题是我想在单击命令按钮时获取每​​个组件的用户选择的值。 当我尝试编写 JoptionPane 或 system.out.print 时，它不起作用。我已将 commandbutton 操作属性设置为 btnsearchFlight 方法，该方法在托管bean 中找到。所以任何人我所缺少的问题是什么。或者举个例子将非常感激。

这是 Facelets 页面

<?xml version='1.0' encoding='UTF-8' ?> 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html 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">

    <h:head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
        <link href="./resources/css/default.css" rel="stylesheet" type="text/css" />
        <link href="./resources/css/cssLayout.css" rel="stylesheet" type="text/css" />
        <title>Airline Travel Planner</title>
    </h:head>

    <h:body>

        <h:form id="form"> 
            <div id="top">
                <ui:insert name="top">AirLine Travel Planner</ui:insert>
            </div>
            <div>
                <div id="left">
                    <ui:insert name="left"></ui:insert>
                </div>
                <div>
                    <div id="right">
                        <ui:insert name="right"></ui:insert>
                    </div>
                    <div id="content" class="right_content" style="height: 500px">
                        <ui:insert name="content">
                            <p:selectOneRadio binding="#{calendarBean1.rdbTripType}" id="rdbTripType" value="#{calendarBean1.rdbTripType}">  
                                <f:selectItem itemLabel="One Way" itemValue="1" />  
                                <f:selectItem itemLabel="Round Trip" itemValue="2" />  
                            </p:selectOneRadio>  
                            <br/>
                            <h:outputLabel>From:</h:outputLabel>  
                            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
                            <p:selectOneMenu value="#{calendarBean1.cityInfo}" style="" effect="fold" editable="true">  
                                <f:selectItems value="#{calendarBean1.cityInfo}" />  
                            </p:selectOneMenu> 
                            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
                            <h:outputLabel style="position: relative">To:</h:outputLabel>
                            <p:selectOneMenu value="#{calendarBean1.cityInfo}" effect="fold" editable="true">  
                                <f:selectItems value="#{calendarBean1.cityInfo}" />  
                            </p:selectOneMenu> 
                            <br/><br/>
                            <h:outputLabel>Depart On:</h:outputLabel>  
                            <p:calendar value="#{calendarBean1.date3}" id="popupButtonDepartOn" showOn="button" /> 
                            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
                            <h:outputLabel>Arrive On:</h:outputLabel>  
                            <p:calendar value="#{calendarBean1.date2}" id="popupButtonArriveOn" showOn="button" /> 
                            <br/>  <br/> 

                            <h:outputText value="Passenger Type" />  
                            <p:selectOneMenu id="selectOneMenuPassengerType" binding="#{calendarBean1.selectOneMenuPassengerType}" value="#{calendarBean1.selectOneMenuPassengerType}" >  
                                <f:selectItem itemLabel="Select One" itemValue="" />  
                                <f:selectItem itemLabel="Adult" itemValue="1" />  
                                <f:selectItem itemLabel="Child" itemValue="2" />  
                                <f:selectItem itemLabel="Infant" itemValue="3" />  
                            </p:selectOneMenu>  
                            <br/> <br/> 
                            <p:selectBooleanCheckbox value="#{calendarBean1.lowestFareChecked}" />
                            <h:outputText value="Lowest Fare" />  
                            <br/> 
                            <p:commandButton  id="btnSearchFlight" value="Search"  action="#{calendarBean1.searchFlight}" > 

                            </p:commandButton>

这是托管 bean 类

package test.sample;

import java.io.Serializable;
import java.sql.ResultSet;
import java.util.ArrayList;
import java.util.Date;
import javax.faces.bean.ManagedBean;

import javax.faces.model.SelectItem;
import javax.swing.JOptionPane;
import org.primefaces.component.commandbutton.CommandButton;
import org.primefaces.component.selectonemenu.SelectOneMenu;
import org.primefaces.component.selectoneradio.SelectOneRadio;
import storageMethods.FlightMethod;

/**
 *
 * @author Nati
 */
@ManagedBean(name = "calendarBean1")
public class CalendarBean1 implements Serializable{

    /**
     * Creates a new instance of CalendarBean1
     */
    public CalendarBean1() {
    }
    private Date date1;
    private Date date2;
    private Date date3;
    private boolean lowestFareChecked;

    public boolean isLowestFareChecked() {
        return lowestFareChecked;
    }

    public void setLowestFareChecked(boolean lowestFareChecked) {
        this.lowestFareChecked = lowestFareChecked;
    }

    public Date getDate1() {
        return date1;
    }

    public void setDate1(Date date1) {
        this.date1 = date1;
    }

    public Date getDate2() {
        return date2;
    }

    public void setDate2(Date date2) {
        this.date2 = date2;
    }

    public Date getDate3() {
        return date3;
    }

    public void setDate3(Date date3) {
        this.date3 = date3;
    }
    private SelectOneRadio rdbTripType = new SelectOneRadio();

    public SelectOneRadio getRdbTripType() {
        return rdbTripType;
    }

    public void setRdbTripType(SelectOneRadio rdbTripType) {
        this.rdbTripType = rdbTripType;
    }
    public CommandButton btnSearchFlight = new CommandButton();

    public CommandButton getBtnSearchFlight() {
        return btnSearchFlight;
    }

    public void setBtnSearchFlight(CommandButton btnSearchFlight) {
        this.btnSearchFlight = btnSearchFlight;
    }
    private SelectOneMenu selectOneMenuPassengerType = new SelectOneMenu();

    public SelectOneMenu getSelectOneMenuPassengerType() {
        return selectOneMenuPassengerType;
    }

    public void setSelectOneMenuPassengerType(SelectOneMenu selectOneMenuPassengerType) {
        this.selectOneMenuPassengerType = selectOneMenuPassengerType;
    }
    public ArrayList<SelectItem> CityInfo;

    public ArrayList<SelectItem> getCityInfo() {
        CityInfo = CityInfo();
        return CityInfo;
    }

    public void setCityInfo(ArrayList<SelectItem> CityInfo) {
        this.CityInfo = CityInfo;
    }

    public String SearchFlight() {
//        JOptionPane.showMessageDialog(null, rdbTripType.getValue().toString());
//        JOptionPane.showMessageDialog(null,   selectOneMenuPassengerType.getValue().toString());
         JOptionPane.showMessageDialog(null,date3);
//        System.out.print("hi");
//        System.out.print(isLowestFareChecked());

        return null;
    }


}
原文

I have facelets page and managed bean that is associated with it.
i have used primefaces components and my problem is i want to get the values selected by the user of each components when a commandbutton is clicked.
when i try to write a JoptionPane or system.out.print it does not work. i have set the commandbutton action property to btnsearchFlight method whcih is found in the managedbean. so any one what is the problem what i am missing. Or an example will be very much appreciated.

Here is the Facelets page

<?xml version='1.0' encoding='UTF-8' ?> 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html 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">

    <h:head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
        <link href="./resources/css/default.css" rel="stylesheet" type="text/css" />
        <link href="./resources/css/cssLayout.css" rel="stylesheet" type="text/css" />
        <title>Airline Travel Planner</title>
    </h:head>

    <h:body>

        <h:form id="form"> 
            <div id="top">
                <ui:insert name="top">AirLine Travel Planner</ui:insert>
            </div>
            <div>
                <div id="left">
                    <ui:insert name="left"></ui:insert>
                </div>
                <div>
                    <div id="right">
                        <ui:insert name="right"></ui:insert>
                    </div>
                    <div id="content" class="right_content" style="height: 500px">
                        <ui:insert name="content">
                            <p:selectOneRadio binding="#{calendarBean1.rdbTripType}" id="rdbTripType" value="#{calendarBean1.rdbTripType}">  
                                <f:selectItem itemLabel="One Way" itemValue="1" />  
                                <f:selectItem itemLabel="Round Trip" itemValue="2" />  
                            </p:selectOneRadio>  
                            <br/>
                            <h:outputLabel>From:</h:outputLabel>  
                                  
                            <p:selectOneMenu value="#{calendarBean1.cityInfo}" style="" effect="fold" editable="true">  
                                <f:selectItems value="#{calendarBean1.cityInfo}" />  
                            </p:selectOneMenu> 
                                  
                            <h:outputLabel style="position: relative">To:</h:outputLabel>
                            <p:selectOneMenu value="#{calendarBean1.cityInfo}" effect="fold" editable="true">  
                                <f:selectItems value="#{calendarBean1.cityInfo}" />  
                            </p:selectOneMenu> 
                            <br/><br/>
                            <h:outputLabel>Depart On:</h:outputLabel>  
                            <p:calendar value="#{calendarBean1.date3}" id="popupButtonDepartOn" showOn="button" /> 
                                  
                            <h:outputLabel>Arrive On:</h:outputLabel>  
                            <p:calendar value="#{calendarBean1.date2}" id="popupButtonArriveOn" showOn="button" /> 
                            <br/>  <br/> 

                            <h:outputText value="Passenger Type" />  
                            <p:selectOneMenu id="selectOneMenuPassengerType" binding="#{calendarBean1.selectOneMenuPassengerType}" value="#{calendarBean1.selectOneMenuPassengerType}" >  
                                <f:selectItem itemLabel="Select One" itemValue="" />  
                                <f:selectItem itemLabel="Adult" itemValue="1" />  
                                <f:selectItem itemLabel="Child" itemValue="2" />  
                                <f:selectItem itemLabel="Infant" itemValue="3" />  
                            </p:selectOneMenu>  
                            <br/> <br/> 
                            <p:selectBooleanCheckbox value="#{calendarBean1.lowestFareChecked}" />
                            <h:outputText value="Lowest Fare" />  
                            <br/> 
                            <p:commandButton  id="btnSearchFlight" value="Search"  action="#{calendarBean1.searchFlight}" > 

                            </p:commandButton>

Here is the managed bean class

package test.sample;

import java.io.Serializable;
import java.sql.ResultSet;
import java.util.ArrayList;
import java.util.Date;
import javax.faces.bean.ManagedBean;

import javax.faces.model.SelectItem;
import javax.swing.JOptionPane;
import org.primefaces.component.commandbutton.CommandButton;
import org.primefaces.component.selectonemenu.SelectOneMenu;
import org.primefaces.component.selectoneradio.SelectOneRadio;
import storageMethods.FlightMethod;

/**
 *
 * @author Nati
 */
@ManagedBean(name = "calendarBean1")
public class CalendarBean1 implements Serializable{

    /**
     * Creates a new instance of CalendarBean1
     */
    public CalendarBean1() {
    }
    private Date date1;
    private Date date2;
    private Date date3;
    private boolean lowestFareChecked;

    public boolean isLowestFareChecked() {
        return lowestFareChecked;
    }

    public void setLowestFareChecked(boolean lowestFareChecked) {
        this.lowestFareChecked = lowestFareChecked;
    }

    public Date getDate1() {
        return date1;
    }

    public void setDate1(Date date1) {
        this.date1 = date1;
    }

    public Date getDate2() {
        return date2;
    }

    public void setDate2(Date date2) {
        this.date2 = date2;
    }

    public Date getDate3() {
        return date3;
    }

    public void setDate3(Date date3) {
        this.date3 = date3;
    }
    private SelectOneRadio rdbTripType = new SelectOneRadio();

    public SelectOneRadio getRdbTripType() {
        return rdbTripType;
    }

    public void setRdbTripType(SelectOneRadio rdbTripType) {
        this.rdbTripType = rdbTripType;
    }
    public CommandButton btnSearchFlight = new CommandButton();

    public CommandButton getBtnSearchFlight() {
        return btnSearchFlight;
    }

    public void setBtnSearchFlight(CommandButton btnSearchFlight) {
        this.btnSearchFlight = btnSearchFlight;
    }
    private SelectOneMenu selectOneMenuPassengerType = new SelectOneMenu();

    public SelectOneMenu getSelectOneMenuPassengerType() {
        return selectOneMenuPassengerType;
    }

    public void setSelectOneMenuPassengerType(SelectOneMenu selectOneMenuPassengerType) {
        this.selectOneMenuPassengerType = selectOneMenuPassengerType;
    }
    public ArrayList<SelectItem> CityInfo;

    public ArrayList<SelectItem> getCityInfo() {
        CityInfo = CityInfo();
        return CityInfo;
    }

    public void setCityInfo(ArrayList<SelectItem> CityInfo) {
        this.CityInfo = CityInfo;
    }

    public String SearchFlight() {
//        JOptionPane.showMessageDialog(null, rdbTripType.getValue().toString());
//        JOptionPane.showMessageDialog(null,   selectOneMenuPassengerType.getValue().toString());
         JOptionPane.showMessageDialog(null,date3);
//        System.out.print("hi");
//        System.out.print(isLowestFareChecked());

        return null;
    }


}

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评论（2）

塔塔猫 2025-01-14 06:33:33

也许只是在 stackoverflow 上发布时的一个拼写错误，但你的方法是大写的：
搜索飞行
并且您在 .xhtml 按钮中的操作是小写的。
action="#{calendarBean1.searchFlight}

难道不是吗？

public String searchFlight() {

我从来没有在 JSf 框架中使用过 Swing 组件。但是 system.out 在注释掉后应该可以工作。如果你的方法被调用。你的代码中不会出现任何错误吗？日志？

Maybe just a typo when posting on stackoverflow, but your method is Capitalized:
SearchFlight
And your action in .xhtml button is lowercase.
action="#{calendarBean1.searchFlight}

Shouldn't it be

public String searchFlight() {

I never used Swing components in a JSf franework. But the system.out should work when commented out. If you method is called. Don't you get any errors in your logs?

回复 原文
冷清清 2025-01-14 06:33:33

我认为您将 Web 应用程序开发 (JSF) 与桌面开发 (Swing) 混合在一起。使用 JSF，您不需要为每个 Facelet 组件创建一个支持 bean 组件。 不需要

  • org.primefaces.component.commandbutton.CommandButton
  • org.primefaces.component.selectonemenu.SelectOneMenu
  • org.primefaces.component.selectoneradio.SelectOneRadio

如果您只想绑定这些组件的输入值，则您的 bean 中

。当然，在某些情况下，您将从组件绑定中受益，但这在您的示例中不是必需的。

在 Facelet 中，您使用 value 属性和 binding 属性，但它们具有相同的内容。

如果您只对输入值感兴趣，那么 value 属性就足够了。让此属性指向仅保存值的支持 bean 字段，例如 int 或 String。

I think you mixed webapp development (JSF) with desktop development (Swing). With JSF you don't need to create a backing bean component for every single facelet component. You don't need

  • org.primefaces.component.commandbutton.CommandButton
  • org.primefaces.component.selectonemenu.SelectOneMenu
  • org.primefaces.component.selectoneradio.SelectOneRadio

in your bean if you only want to bind the input values of these components.

Of course in some situations you will get benefits from component binding but it is not necessary in your example.

In the facelet you use the value attribute and the binding attribute, but they have the same content.

If you are only interested in input values, the value attribute is all you need. Let this attribute point to a backing bean field that only will hold the value, e.g. an int or String.

回复 原文
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