如果违反JSR 303验证约束,如何强制通过p:ajax设置p:inputText值?

时间:2017-04-19 14:37:21

标签: ajax jsf jpa primefaces bean-validation

我有一个Java Web 7项目,我希望在每个p:ajax事件上直接在支持bean中管理的实体实例上编写JSF组件值。只要我在其中一个实体属性上添加JSR 303验证约束(例如@Size(min=5)),这就可以正常工作。只要违反约束,就不会在具有约束的属性上设置该值。根据NetBeans调试器调用setter;另一个属性工作正常,这使我相信我已经隔离了问题。我想在我想要的时候执行验证,因此如果我想要获取和设置无效值。如何实现这一目标?

在我的最小可重复示例中,我有实体MyEntity(JPA和JSR 303注释)

@Entity
public class MyEntity implements Serializable {
    private static final long serialVersionUID = 1L;
    @Id
    @GeneratedValue
    private Long id;
    @Size(min = 5)
    private String property1;
    private String property2;

    public MyEntity() {
    }

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public String getProperty1() {
        return property1;
    }

    public void setProperty1(String property1) {
        this.property1 = property1;
    }

    public String getProperty2() {
        return property2;
    }

    public void setProperty2(String property2) {
        this.property2 = property2;
    }
}

JSF页面

<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:h="http://xmlns.jcp.org/jsf/html"
      xmlns:p="http://primefaces.org/ui">
    <h:head>
        <title>Facelet Title</title>
    </h:head>
    <h:body>
        <h:form>
            <p:inputText value="#{myManagedBean.myEntity.property1}">
                <p:ajax/>
            </p:inputText>
            <p:inputTextarea value="#{myManagedBean.myEntity.property2}">
                <p:ajax/>
            </p:inputTextarea>
            <p:commandButton value="Save">
                <p:ajax listener="#{myManagedBean.onSaveButtonClicked}"/>
            </p:commandButton>
        </h:form>
    </h:body>
</html>

和支持bean

@ManagedBean
@SessionScoped
public class MyManagedBean {
    private String value;
    private String textAreaValue;
    private MyEntity myEntity = new MyEntity();

    public MyManagedBean() {
    }

    public String getValue() {
        return value;
    }

    public void setValue(String value) {
        this.value = value;
    }

    public String getTextAreaValue() {
        return textAreaValue;
    }

    public MyEntity getMyEntity() {
        return myEntity;
    }

    public void setMyEntity(MyEntity myEntity) {
        this.myEntity = myEntity;
    }

    public void setTextAreaValue(String textAreaValue) {
        this.textAreaValue = textAreaValue;
    }

    public void onSaveButtonClicked(AjaxBehaviorEvent event) {
        System.out.println("value: "+value);
        System.out.println("textAreaValue: "+textAreaValue);
        System.out.println("myEntity: "+myEntity);
    }
}

该示例可在https://github.com/krichter722/jsf-skip-entity-validation找到。我使用的是Primefaces 6.0。

1 个答案:

答案 0 :(得分:2)

它正在工作,因为它应该工作。如果验证失败,则不应调用setter。如果需要,可以使用以下命令禁用bean验证:

<f:validateBean disabled="true"/>