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JSF 2 动态表单和 Bean 验证 JSR 303

发布于 2024-11-19 04:48:16 字数 8558 浏览 4 评论 0 原文

我从带注释的 bean 开始生成一个动态表单。使用 Hibernate Validator 对同一个 bean 进行注释以进行验证。 表单已正确呈现，但提交表单时，验证步骤并未执行。如果我使用 jsf 标记编写相同的表单，则验证可以正常工作。

有什么想法吗？

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>

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;
}

实体 Bean 示例：

@Entity

public class Istituto Implements Serialized, IBaseEntity { 私有静态最终长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();
}

}

原文

I generate a dynamic form starting from annotated bean. The same bean is annotated for validation using Hibernate Validator.
The form is correctly rendered but when the form is submitted the validation step it's not executed. If I write the same form with jsf tag the validation works properly.

Any idea?

The form page:

<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

    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:

@Entity

public class Istituto implements 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();
}

}

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感情废物 2024-11-26 04:48:16

您必须将 javax.faces.validator.BeanValidator 的实例添加到您的输入组件中：

input.addValidator(new BeanValidator());

原因是在标记执行期间添加了默认验证器（BeanValidator 已注册为一个）： http://java.net/jira/browse/JAVASERVERFACES_SPEC_PUBLIC-635。

You have to add an instance of javax.faces.validator.BeanValidator to your input components:

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.

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