Backing bind with JSF components

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Backing bind with JSF components

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#1 by (1 votes)
#2 by (0 votes)

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I am a beginner in Java EE and I am using an Algaworks e-book "Java EE 7, with JSF, PrimeFaces and CDI. Even ManagedBean occurred normally, but when I started with the backing bean Java could not find the property with HtmlInputText As the eBook example I changed the class NomeBean as follows:

NamesBean.java

@ManagedBean
@ViewScoped
public class NomesBean {
    private String nome;
    private List<String> nomes = new ArrayList<>();
    private HtmlInputText inputNome;
    private HtmlCommandButton botaoAdicionar;

    public void adicionar() {
        this.nomes.add(nome);
        // desativa campo e botão quando mais que 3 nomes
        // forem adicionados
        if (this.nomes.size() > 3) {
        this.inputNome.setDisabled(true);
        this.botaoAdicionar.setDisabled(true);
        this.botaoAdicionar.setValue("Muitos nomes adicionados...");
    }

    public String getNome() {
        return nome;
    }

    public void setNome(String nome) {
        this.nome = nome;
    }

    public List<String> getNomes() {
        return nomes;
    }

}

names.xhtml

    <!DOCTYPE html>
    <html xmlns="http://www.w3.org/199/xhtml"
          xmlns:h="http://xmlns.jcp.org/jsf/html"
          xmlns:ui="http://java.sun.com/jsf/facelets">
    <h:head>
    <title>Lista Nomes</title>
    </h:head>
    <h:body>
        <h:form>
            Nome: <h:inputText value="#{nomesBean.nome}" binding="#{nomesBean.inputNome}" />
            <br/>
            <h:commandButton value="Adicionar" action="#{nomesBean.adicionar}" binding="#{nomesBean.botaoAdicionar}" />
            <ol>
                <ui:repeat var="nome" value="#{nomesBean.nomes}">
                    <li>#{nome}</li>
                </ui:repeat>
            </ol>
        </h:form>
    </h:body>
    </html>

Error output:

    HTTP Status 500 - /nomes.xhtml @10,85 binding="#{nomesBean.inputNome}": Property 'inputNome' not found on type com.algaworks.financeiro.model.NomesBean

    type Exception report

    message /nomes.xhtml @10,85 binding="#{nomesBean.inputNome}": Property 'inputNome' not found on type com.algaworks.financeiro.model.NomesBean

    description The server encountered an internal error that prevented it from fulfilling this request.

    exception

    javax.servlet.ServletException: /nomes.xhtml @10,85 binding="#{nomesBean.inputNome}": Property 'inputNome' not found on type com.algaworks.financeiro.model.NomesBean
        javax.faces.webapp.FacesServlet.service(FacesServlet.java:659)
        org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    root cause

    javax.el.PropertyNotFoundException: /nomes.xhtml @10,85 binding="#{nomesBean.inputNome}": Property 'inputNome' not found on type com.algaworks.financeiro.model.NomesBean
        com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:111)
        com.sun.faces.application.ApplicationImpl.createComponentApplyAnnotations(ApplicationImpl.java:1943)
        com.sun.faces.application.ApplicationImpl.createComponent(ApplicationImpl.java:1149)
        com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.createComponent(ComponentTagHandlerDelegateImpl.java:596)
        com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.apply(ComponentTagHandlerDelegateImpl.java:175)
        javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:120)
        javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:95)
        javax.faces.view.facelets.DelegatingMetaTagHandler.applyNextHandler(DelegatingMetaTagHandler.java:137)
        com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.apply(ComponentTagHandlerDelegateImpl.java:202)
        javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:120)
        javax.faces.view.facelets.DelegatingMetaTagHandler.applyNextHandler(DelegatingMetaTagHandler.java:137)
        com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.apply(ComponentTagHandlerDelegateImpl.java:202)
        javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:120)
        javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:95)
        com.sun.faces.facelets.compiler.NamespaceHandler.apply(NamespaceHandler.java:93)
        com.sun.faces.facelets.compiler.EncodingHandler.apply(EncodingHandler.java:87)
        com.sun.faces.facelets.impl.DefaultFacelet.apply(DefaultFacelet.java:161)
        com.sun.faces.application.view.FaceletViewHandlingStrategy.buildView(FaceletViewHandlingStrategy.java:991)
        com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:99)
        com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
        com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219)
        javax.faces.webapp.FacesServlet.service(FacesServlet.java:647)
        org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    root cause

    javax.el.PropertyNotFoundException: Property 'inputNome' not found on type com.algaworks.financeiro.model.NomesBean
        javax.el.BeanELResolver$BeanProperties.get(BeanELResolver.java:268)
        javax.el.BeanELResolver$BeanProperties.access$300(BeanELResolver.java:221)
        javax.el.BeanELResolver.property(BeanELResolver.java:355)
        javax.el.BeanELResolver.getValue(BeanELResolver.java:95)
        com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176)
        com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203)
        org.apache.el.parser.AstValue.getValue(AstValue.java:167)
        org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:184)
        com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109)
        com.sun.faces.application.ApplicationImpl.createComponentApplyAnnotations(ApplicationImpl.java:1943)
        com.sun.faces.application.ApplicationImpl.createComponent(ApplicationImpl.java:1149)
        com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.createComponent(ComponentTagHandlerDelegateImpl.java:596)
        com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.apply(ComponentTagHandlerDelegateImpl.java:175)
        javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:120)
        javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:95)
        javax.faces.view.facelets.DelegatingMetaTagHandler.applyNextHandler(DelegatingMetaTagHandler.java:137)
        com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.apply(ComponentTagHandlerDelegateImpl.java:202)
        javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:120)
        javax.faces.view.facelets.DelegatingMetaTagHandler.applyNextHandler(DelegatingMetaTagHandler.java:137)
        com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.apply(ComponentTagHandlerDelegateImpl.java:202)
        javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:120)
        javax.faces.view.facelets.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:95)
        com.sun.faces.facelets.compiler.NamespaceHandler.apply(NamespaceHandler.java:93)
        com.sun.faces.facelets.compiler.EncodingHandler.apply(EncodingHandler.java:87)
        com.sun.faces.facelets.impl.DefaultFacelet.apply(DefaultFacelet.java:161)
        com.sun.faces.application.view.FaceletViewHandlingStrategy.buildView(FaceletViewHandlingStrategy.java:991)
        com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:99)
        com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
        com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219)
        javax.faces.webapp.FacesServlet.service(FacesServlet.java:647)
        org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    note The full stack trace of the root cause is available in the Apache Tomcat/8.0.20 logs.

    Apache Tomcat/8.0.20

But for more than three hours with Google search I could not solve the problem.

java-ee jsf-2.2

asked by anonymous 03.07.2015 / 04:41

2 answers

Edit NodeJs data Error 503 "No 'Access-Control-Allow-Origin' header" [closed]

score 1 · Answer 1

1

adrianosymphony , I'll edit my answer as you edit the question

Add the getters and setters to inputName and addButton ;

03.07.2015 / 14:30

score 0 · Answer 2

The information about creating getters and setters worked. The end of the class NamesBean looks like this:

public HtmlInputText getInputNome() {
    return inputNome;
}

public void setInputNome(HtmlInputText inputNome) {
    this.inputNome = inputNome;
}

public HtmlCommandButton getBotaoAdicionar() {
    return botaoAdicionar;
}

public void setBotaoAdicionar(HtmlCommandButton botaoAdicionar) {
    this.botaoAdicionar = botaoAdicionar;
}