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My first ajax reverse application

I want to learn about the reverse of ajax, I found a gadget called ICEPush, and I thought this might be a good starting point. I'm having trouble implementing a very simple application. I follow this tutorial , but instead of Tomcat I use Glassfish 3.1, and instead of Eclipse I use NetBeans 7.1

I did exactly as the tutorial says, see my code. This is the page that will be the target of clicking Ajax:

<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:f="http://java.sun.com/jsf/core">
    <h:head>
        <title>Easy Ajax Push - Color</title>
    </h:head>

        <h:body>
            <h:dataTable value="#{messageBean.textList}" var="current">
                <h:column>
                    <h:outputText value="#{current.text}"
                                  style="color: #{current.color};"/>
                </h:column>
            </h:dataTable>

            <hr width="100%"/>

            <h:form>
                <h:panelGrid columns="4">
                    Choose a Color:
                    <h:commandButton value="Red"
                                     action="#{colorBean.chooseColor}"
                                     style="color: white; background-color: red;">
                        <f:setPropertyActionListener target="#{colorBean.color}" value="red"/>
                    </h:commandButton>
                    <h:commandButton value="Blue"
                                     action="#{colorBean.chooseColor}"
                                     style="color: white; background-color: blue;">
                        <f:setPropertyActionListener target="#{colorBean.color}" value="blue"/>
                    </h:commandButton>
                    <h:commandButton value="Green"
                                     action="#{colorBean.chooseColor}"
                                     style="color: white; background-color: green;">
                        <f:setPropertyActionListener target="#{colorBean.color}" value="green"/>
                    </h:commandButton>
                </h:panelGrid>
            </h:form>

        </h:body>

</html>

Here are 2 managed beans that are needed: ColorBean.java

@ManagedBean(name="colorBean")
@ViewScoped
public class ColorBean implements  Serializable {

   private static final String PUSH_GROUP = "colorPage";

    @ManagedProperty(value="#{messageBean}")
    private MessageBean messageBean;
    private String color = "black";
    private String sessionId;

    public ColorBean() {            
                PushRenderer.addCurrentSession(PUSH_GROUP);
        FacesContext fcontext = FacesContext.getCurrentInstance();
        HttpSession session = (HttpSession)fcontext.getExternalContext().getSession(false);
        sessionId = session.getId();
    }

    public void setMessageBean(MessageBean messageBean) {
        this.messageBean = messageBean;
    }

    public String getColor() {
        return color;
    }

    public void setColor(String color) {
        this.color = color;
    }

    public String chooseColor() {
        messageBean.addToList(sessionId, color);
                PushRenderer.render(PUSH_GROUP);
        return null;
    }
}

MessageBean.java

@ManagedBean(name="messageBean")
@ApplicationScoped
public class MessageBean implements  Serializable {

    private static final int MAX_SIZE = 25;
    private List<TextModel> textList = new ArrayList<TextModel>(0);

    public MessageBean() {
    }

    public List<TextModel> getTextList() {
        return textList;
    }

    public void setTextList(List<TextModel> textList) {
        this.textList = textList;
    }

    public void addToList(String sessionId, String color) {
        textList.add(makeTextModel(sessionId, color));

        if (textList.size() > MAX_SIZE) {
            textList.clear();
        }
    }

    private TextModel makeTextModel(String sessionId, String color) {
        return new TextModel("User with session ID of " + sessionId + " selected color \"" + color + "\".",
                             color);
    }
}

There is also a simple pojo to represent the presented text. TextModel.java

public class TextModel implements Serializable {

    private String text;
    private String color;

    public TextModel() {
    }

    public TextModel(String text, String color) {
        this.text = text;
        this.color = color;
    }

    public String getText() {
        return text;
    }

    public void setText(String text) {
        this.text = text;
    }

    public String getColor() {
        return color;
    }

    public void setColor(String color) {
        this.color = color;
    }

    public String toString() {
        return text;
    }
}

I am using IceFaces version 3.0.1, and here is what my web.xml looks like :

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" 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_3_0.xsd">
    <context-param>
        <param-name>javax.faces.PROJECT_STAGE</param-name>
        <param-value>Development</param-value>
    </context-param>
    <context-param>
        <param-name>javax.faces.STATE_SAVING_METHOD</param-name>
        <param-value>server</param-value>
    </context-param>
    <context-param>
        <param-name>javax.faces.FACELETS_SKIP_COMMENTS</param-name>
        <param-value>true</param-value>
    </context-param>
    <context-param>
        <param-name>org.icefaces.mandatoryResourceConfiguration</param-name>
        <param-value/>
    </context-param>
    <context-param>
        <param-name>org.icefaces.ace.theme</param-name>
        <param-value>sam</param-value>
    </context-param>
    <context-param>
        <param-name>javax.faces.VALIDATE_EMPTY_FIELDS</param-name>
        <param-value>false</param-value>
    </context-param>
    <context-param>
        <param-name>com.icesoft.faces.gmapKey</param-name>
        <param-value>ABQIAAAADlu0ZiSTam64EKaCQr9eTRTOTuQNzJNXRlYRLknj4cQ89tFfpxTEqxQnVWL4k55OPICgF5_SOZE06A</param-value>
    </context-param>
    <servlet>
        <servlet-name>Faces Servlet</servlet-name>
        <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet>
        <servlet-name>Resource Servlet</servlet-name>
        <servlet-class>com.icesoft.faces.webapp.CompatResourceServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>Faces Servlet</servlet-name>
        <url-pattern>/faces/*</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>Faces Servlet</servlet-name>
        <url-pattern>*.jsf</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>Faces Servlet</servlet-name>
        <url-pattern>/icefaces/*</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>Resource Servlet</servlet-name>
        <url-pattern>/xmlhttp/*</url-pattern>
    </servlet-mapping>
    <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
    <welcome-file-list>
        <welcome-file>faces/index.xhtml</welcome-file>
    </welcome-file-list>
</web-app>

This code gives me 3 problems:

1 - , , , , bean , :

: javax.faces.FacesException: w810 Bean. :      - , # {messageBean}, , , beans (colorBean)

2 - , :

: PWC4011: UTF-8 /ReverseAjaxExample, , ServletRequest.getReader()

3 - @ApplicationScope @ViewScope @ViewScope @ApplicationScope beans, , ​​ , , ajax , . PWC4011

Ajax, . , , .

+3
1

, , - .

, :

javax.enterprise.context.ApplicationScoped

javax.faces.bean.ApplicationScoped

, Context dependency, JSF beans.

, , Ctrl + Space :)

+5

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