Créer un sondage en JSF

**Gyles92** · 24/01/2010, 15h44

Librairies & Outils utilisés :
1- JavaServer Faces 2.0
2- RichFaces 3.3.3
3- Tomcat 6.0.18

Web.xml :

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<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
    <context-param>
        <param-name>javax.faces.PROJECT_STAGE</param-name>
        <param-value>Development</param-value>
    </context-param>
    <context-param>
        <param-name>org.richfaces.SKIN</param-name>
        <param-value>japanCherry</param-value>
    </context-param>
    <context-param>
        <param-name>org.richfaces.CONTROL_SKINNING</param-name>
        <param-value>enable</param-value>
    </context-param>
    <filter>
        <display-name>RichFaces Filter</display-name>
        <filter-name>richfaces</filter-name>
        <filter-class>org.ajax4jsf.Filter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>richfaces</filter-name>
        <servlet-name>Faces Servlet</servlet-name>
        <dispatcher>REQUEST</dispatcher>
        <dispatcher>FORWARD</dispatcher>
        <dispatcher>INCLUDE</dispatcher>
    </filter-mapping>
    <servlet>
        <servlet-name>Faces Servlet</servlet-name>
        <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>Faces Servlet</servlet-name>
        <url-pattern>*.jsf</url-pattern>
    </servlet-mapping>
    <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
</web-app>

index.jsp :

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<%@page pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
        <title>index Of...</title>
    </head>
    <body>
        <jsp:forward page="Forms/sondageForm.jsf"/>
    </body>
</html>

sondageForm.jsp :

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<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 
<%@taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
<%@taglib uri="http://java.sun.com/jsf/core" prefix="f" %>
<%@taglib uri="http://richfaces.org/rich" prefix="rich" %>
<%@taglib uri="http://richfaces.org/a4j" prefix="ajax" %>
 
<f:view>
    <html>
        <head>
            <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
            <title>Sondage</title>
        </head>
        <body>
            <ajax:form>
                <rich:panel header="Sondage" style="width: 220px; height: 310px;">
                    <h:selectOneRadio id="ANIMAL" layout="pageDirection" value="#{animalBean.name}">
                        <f:selectItem itemLabel="Chat" itemValue="Chat" />
                        <f:selectItem itemLabel="Chien" itemValue="Chien" />
                        <f:selectItem itemLabel="Lapin" itemValue="Lapin" />
                        <f:selectItem itemLabel="Ours" itemValue="Ours" />
                        <f:selectItem itemLabel="Dauphin" itemValue="Dauphin" />
                        <f:selectItem itemLabel="Lion" itemValue="Lion" />
                        <f:selectItem itemLabel="Singe" itemValue="Singe" />
                        <f:selectItem itemLabel="Cheval" itemValue="Cheval" />
                        <f:selectItem itemLabel="Tigre" itemValue="Tigre" />
                        <f:selectItem itemLabel="Aucun" itemValue="Aucun" />
                    </h:selectOneRadio><br/>
                    <ajax:commandButton value="Valider" action="#{animalBean.doValidate}" /><rich:spacer width="15px" />
                    <ajax:commandButton value="Rétablir" action="#{animalBean.doReset}" reRender="ANIMAL" />
                </rich:panel>
            </ajax:form>
        </body>
    </html>
</f:view>

sondageView.jsp :

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<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 
<%@taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
<%@taglib uri="http://java.sun.com/jsf/core" prefix="f" %>
<%@taglib uri="http://richfaces.org/rich" prefix="rich" %>
 
<f:view>
    <html>
        <head>
            <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
            <title>Résultats</title>
        </head>
        <body>
            <center><br/><br/><h:outputText value="RÉSULTAT DU SONDAGE" style="font-family:verdana; font-weight: bold; font-size:40px;" /></center><br/><br/>
            <center>
                <rich:dataTable value="#{animalBean.lab.list}" var="animalBean" columns="3" style="width: 310px;">
                    <rich:column width="130px"><f:facet name="header"><h:outputText value="ANIMAL" /></f:facet><h:outputText value="#{animalBean.name}" /></rich:column>
                    <rich:column width="80px"><f:facet name="header"><h:outputText value="VOTE" /></f:facet><center><h:outputText value="#{animalBean.nbVotes}" /></center></rich:column>
                    <rich:column width="100px"><f:facet name="header"><h:outputText value="TAUX" /></f:facet><div align="right"><h:outputText value="#{animalBean.percent}" /></div></rich:column>
                    <f:facet name="footer"><f:verbatim escape="false"><center>MERCI POUR VOTRE PARTICIPATION ..</center></f:verbatim></f:facet>
                </rich:dataTable>
            </center>
        </body>
    </html>
</f:view>

AnimalBean.java :

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/**
 * @author Gyles
**/
 
package gyles.beans.ext;
 
import java.io.Serializable;
import gyles.utils.ext.JSFUtilities;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.RequestScoped;
 
@ManagedBean
@RequestScoped
public class AnimalBean extends Object implements Serializable
{
    private int nbVotes;
    private String percent;
    private ListAnimalBean lab;
    private String name = "Aucun";
 
    public AnimalBean()
    {
    }
 
    public AnimalBean(String name, int nbVotes, String percent)
    {
        this.name = name;
        this.nbVotes = nbVotes;
        this.percent = percent;
    }
 
    public String doValidate()
    {
        if (lab == null) lab = new ListAnimalBean();
 
        for (int i = 0; i < JSFUtilities.getAnimalNames().length; i++)
        {
            if (name.equals(JSFUtilities.getAnimalNames()[i]))
            {
                lab.getList().set(i, new AnimalBean(name, lab.getList().get(i).getNbVotes() + 1, "0,00"));
                break;
            }
        }
 
        for (int i = 0; i < JSFUtilities.getAnimalNames().length; i++)
        {
            lab.getList().set(i, new AnimalBean(lab.getList().get(i).getName(),
                                                lab.getList().get(i).getNbVotes(),
                                                JSFUtilities.calcPercent(lab.getList().get(i).getNbVotes(), lab.getTotal()) + " %"));
        }
 
 
        JSFUtilities.saveFile(lab.getList());
        return "Views/sondageView";
    }
 
    public String doReset()
    {
        name = "Aucun";
        return null;
    }
 
    public void setName(String name)
    {
        this.name = name;
    }
 
    public void setNbVotes(int nbVotes)
    {
        this.nbVotes = nbVotes;
    }
 
    public void setPercent(String percent)
    {
        this.percent = percent;
    }
 
    public void setLab(ListAnimalBean lab)
    {
        this.lab = lab;
    }
 
    public String getName()
    {
        return name;
    }
 
    public int getNbVotes()
    {
        return nbVotes;
    }
 
    public String getPercent()
    {
        return percent;
    }
 
    public ListAnimalBean getLab()
    {
        return lab;
    }
}

ListAnimalBean.java :

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/**
 * @author Gyles
**/
 
package gyles.beans.ext;
 
import java.util.List;
import java.util.ArrayList;
import gyles.utils.ext.JSFUtilities;
 
public class ListAnimalBean extends Object
{
    private int total;
    private List<AnimalBean> list;
 
    public ListAnimalBean()
    {
        if (list == null)
        {
            if (JSFUtilities.isExistedFile())
            {
                list = JSFUtilities.loadFile();
            }else
            {
                list = new ArrayList<AnimalBean>();
 
                for (int i = 0; i < JSFUtilities.getAnimalNames().length; i++)
                {
                    list.add(new AnimalBean(JSFUtilities.getAnimalNames()[i], 0, "0,00"));
                }
            }
        }
    }
 
    public void setList(List<AnimalBean> list)
    {
        this.list = list;
    }
 
    public void setTotal(int total)
    {
        this.total = total;
    }
 
    public List<AnimalBean> getList()
    {
        return list;
    }
 
    public int getTotal()
    {
        total = 0;
 
        for (int i = 0; i < list.size(); i++)
        {
            total += ((AnimalBean)list.get(i)).getNbVotes();
        }
 
        return total;
    }
}

JSFUtilities.java :

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/**
 * @author Gyles
**/
 
package gyles.utils.ext;
 
import java.io.File;
import java.util.List;
import java.util.ArrayList;
import java.io.IOException;
import java.text.DecimalFormat;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import gyles.beans.ext.AnimalBean;
import java.io.FileNotFoundException;
 
public final class JSFUtilities extends Object
{
    private JSFUtilities()
    {
    }
 
    public static void saveFile(List<AnimalBean> list)
    {
        try
        {
            ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(new File(".SONDAGE")));
            oos.writeObject(list);
            oos.flush();
            oos.close();
        }catch(IOException exception)
        {
            exception.printStackTrace();
        }
    }
 
    public static List<AnimalBean> loadFile()
    {
        List<AnimalBean> list = null;
 
        try
        {
            ObjectInputStream ois = new ObjectInputStream(new FileInputStream(new File(".SONDAGE")));
            list = (ArrayList<AnimalBean>)ois.readObject();
            ois.close();
        }catch(FileNotFoundException fnfe)
        {
            fnfe.printStackTrace();
        }catch(ClassNotFoundException cnfe)
        {
            cnfe.printStackTrace();
        }catch(IOException exception)
        {
            exception.printStackTrace();
        }
 
        return list;
    }
 
    public static boolean isExistedFile()
    {
        return new File(".SONDAGE").exists() ? true : false;
    }
 
    public static String calcPercent(int nbVotes, int total)
    {
        return new DecimalFormat("#0.00").format((double)((double)nbVotes * 100.0) / (double)total);
    }
 
    public static String[] getAnimalNames()
    {
        return new String[] {"Chat","Chien","Lapin","Ours","Dauphin",
                             "Lion","Singe","Cheval","Tigre","Aucun"};
    }
}