JSF 2 动态表单和bean验证JSR 303

Question

I generate a dynamic form starting from annotated bean.我从带注释的 bean 开始生成一个动态表单。 The same bean is annotated for validation using Hibernate Validator.使用 Hibernate Validator 对同一 bean 进行注释以进行验证。 The form is correctly rendered but when the form is submitted the validation step it's not executed.表单已正确呈现，但在提交表单时未执行验证步骤。 If I write the same form with jsf tag the validation works properly.如果我使用 jsf 标签编写相同的表单，则验证工作正常。

Any idea?任何想法？

The form page:表单页面：

<body>

    <ui:composition template="/template/basetheme_one_col.xhtml">
        <ui:define name="title">#{__g4cController.entityClassName}</ui:define>

        <ui:define name="main_area">

            <h2>#{__g4cController.entityClassName}</h2>
            <br />
            <div id="briciole_pane">
                <h:form id="briciole_pane_form"  styleClass="form">
                    <h:commandLink action="home" value="Home" />
                    <h:outputText value=" / " />
                    Modifica #{__g4cController.entityClassName}
                </h:form>
            </div>
            <br />


            <h:form id="edit_record"  styleClass="myForm">
                <rich:calendar rendered="false" />
                <h4>Modifica #{__g4cController.entityClassName}</h4>

                <h:messages errorClass="error_msg" layout="list" globalOnly="false" />
                <br />

               <h:panelGrid binding="#{__g4cController.dynamicForm}" />


               <div class="box_bottoni">
                    <div class="box_bottone_azzurro">
                        <h:commandLink action="#{__g4cController.edit}" value="Salva Modifiche">
                            <f:param name="cruddao.objectKey" value="#{g4c:getXmlFromObject(__g4cController.entity.id)}" />
                        </h:commandLink>
                    </div>
                    <h:commandLink action="#{__g4cController.listSetup}" styleClass="link_annulla_rosso"
                                   value="Annulla e torna a lista #{__g4cController.entityClassName}" immediate="true" />
                    <div class="clear"></div>
                </div>


           </h:form>

        </ui:define>
    </ui:composition>
</body>

Code that generate the form starting from EntityBean从 EntityBean 开始生成表单的代码

    public UIComponent getDynamicForm() {
    FacesContext ctx = FacesContext.getCurrentInstance();
    Application app = ctx.getApplication();
    HtmlPanelGrid panel = (HtmlPanelGrid) app.createComponent(HtmlPanelGrid.COMPONENT_TYPE);
    panel.setColumns(2);

    Class currentClass = super.entityClass;
    while(!currentClass.equals(Object.class)) {
        Field fields[] = currentClass.getDeclaredFields();
        for(Field field: fields) {
            Annotation id = field.getAnnotation(Id.class);
            Annotation embeddedId = field.getAnnotation(EmbeddedId.class);
            OneToMany oneToMany = field.getAnnotation(OneToMany.class);
            ManyToMany manyToMany = field.getAnnotation(ManyToMany.class);
            Transient transientTag = field.getAnnotation(Transient.class);
            Temporal temporal = field.getAnnotation(Temporal.class);



            if(id == null && embeddedId == null && oneToMany == null && manyToMany == null && transientTag == null) {
                int modifiers=field.getModifiers();
                if(!Modifier.isStatic(modifiers)) {
                    HtmlOutputLabel label = (HtmlOutputLabel) app.createComponent(HtmlOutputLabel.COMPONENT_TYPE);

                    String name = field.getName();
                    Class clazz = field.getType();

                    panel.getChildren().add(label);
                    label.setFor(name);
                    label.setValue(StringUtil.capitalize(name)+":");

                    String expression = "#{__g4cController.entity."+name+"}";
                    ValueExpression valueExpression = app.getExpressionFactory()
                            .createValueExpression(ctx.getELContext(),
                                    expression,
                                    clazz);

                    ManyToOne manyToOne = field.getAnnotation(ManyToOne.class);
                    if(manyToOne != null) {
                        HtmlSelectOneMenu input = (HtmlSelectOneMenu) app.createComponent(HtmlSelectOneMenu.COMPONENT_TYPE);
                        input.setId(name);
                        input.setValueExpression("value", valueExpression);
                        input.setLabel(name);

                        UISelectItems items = (UISelectItems) app.createComponent(UISelectItems.COMPONENT_TYPE);
                        input.getChildren().add(items);
                        String manyToOneClassName = field.getType().getSimpleName().toLowerCase();
                        String itemsExpression = "#{"+manyToOneClassName+".entityListSelectOne}";
                        ValueExpression itemsValueExpression = app.getExpressionFactory()
                                .createValueExpression(ctx.getELContext(),
                                        itemsExpression,
                                    SelectItem[].class);
                        items.setValueExpression("value", itemsValueExpression);
                        panel.getChildren().add(input);
                    } else {
                        if(temporal != null) {
                            if(temporal.value().equals(TemporalType.DATE)) {
                                UICalendar input = (UICalendar) app.createComponent(UICalendar.COMPONENT_TYPE);
                                input.setId(name);
                                input.setValueExpression("value", valueExpression);
                                input.setDatePattern("dd/MM/yyyy");
                                //input.setConverter(new DateConverter());
                                panel.getChildren().add(input);
                            }
                        } else {
                            HtmlInputText input = (HtmlInputText) app.createComponent(HtmlInputText.COMPONENT_TYPE);
                            input.setId(name);
                            input.setValueExpression("value", valueExpression);
                            input.setLabel(name);
                            input.setSize(50);
                            input.setMaxlength(255);
                            panel.getChildren().add(input);
                        }

                    }
                }
            }
        }
        currentClass = currentClass.getSuperclass();
    }
    return panel;
}

A Entity Bean example:一个实体 Bean 示例：

@Entity

public class Istituto implements Serializable, IBaseEntity { private static final long serialVersionUID = 1L; public class Istituto 实现 Serializable，IBaseEntity { private static final long serialVersionUID = 1L;

@Id
@SequenceGenerator(name="IstitutoGenerator", sequenceName="ISTITUTO_SEQ", allocationSize=1)
@GeneratedValue(strategy=GenerationType.SEQUENCE, generator="IstitutoGenerator")
@Column(name="ID_ISTITUTO")
private int idIstituto;

@NotNull
private String nome;

@NotNull
private String indirizzo;

@NotNull
private String comune;

@NotNull
@Pattern(regexp="[0-9][0-9][0-9][0-9][0-9]", message="Il CAP deve essere composto da 5 numeri")
private String cap;

@OneToMany(mappedBy="istituto")
private Set<Classe> classes;

public Istituto() {
}

public int getIdIstituto() {
    return this.idIstituto;
}

public void setIdIstituto(int idIstituto) {
    this.idIstituto = idIstituto;
}

public String getCap() {
    return this.cap;
}

public void setCap(String cap) {
    this.cap = cap;
}

public String getComune() {
    return this.comune;
}

public void setComune(String comune) {
    this.comune = comune;
}

public String getIndirizzo() {
    return this.indirizzo;
}

public void setIndirizzo(String indirizzo) {
    this.indirizzo = indirizzo;
}

public String getNome() {
    return this.nome;
}

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

public Set<Classe> getClasses() {
    return this.classes;
}

public void setClasses(Set<Classe> classes) {
    this.classes = classes;
}

@Override
public Integer getId() {
    return this.getIdIstituto();
}

@Override
public int hashCode() {
    int hash = 0;
    hash += this.getIdIstituto();
    return hash;
}

@Override
public boolean equals(Object object) {
    if (!(object instanceof Istituto)) {
        return false;
    }
    Istituto other = (Istituto) object;
    if  (this.getIdIstituto() != other.getIdIstituto()) {
        return false;
    }

    return true;
}

@Override
public String toString() {
    return this.getNome();
}

} }

Answer 1

You have to add an instance of javax.faces.validator.BeanValidator to your input components:您必须将javax.faces.validator.BeanValidator的实例添加到您的输入组件：

input.addValidator(new BeanValidator());

The reason is that default validators (BeanValidator is registered as one) are added during tag execution: http://java.net/jira/browse/JAVASERVERFACES_SPEC_PUBLIC-635 .原因是在标签执行期间添加了默认验证器（BeanValidator 注册为一个）： http://java.net/jira/browse/JAVASERVERFACES_SPEC_PUBLIC-635 。

JSF 2 动态表单和bean验证JSR 303

问题描述

1 个解决方案

解决方案1
4 2011-08-14 07:25:05

JSF 2 动态表单和bean验证JSR 303

问题描述

1 个解决方案

解决方案1 4 2011-08-14 07:25:05

解决方案1
4 2011-08-14 07:25:05