javax.validation.ConstraintViolationException：在组的持续时间内对类的验证失败[javax.validation.groups.Default，]

Question

我的实体在 name 字段上有 bean 验证注释 @NotBlank 和 @Size。但是，当我提交 name 字段留空的 JSF 表单时，它不会验证该字段。

这是有问题的字段：

@NotBlank(message = "{name.required}")
@Size(max = 25, message = "{long.value}")
@Column(name = "name", length = 25, nullable = false)
private String name;

在不输入任何数据的情况下提交表单时，我收到以下异常：

Caused by: javax.faces.el.EvaluationException: javax.validation.ConstraintViolationException: validation failed for classes [com.myapp.domain.Department] during persist time for groups [javax.validation.groups.Default, ]
    at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102)
    at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
    ... 89 more
Caused by: javax.validation.ConstraintViolationException: validation failed for classes [com.myapp.domain.Department] during persist time for groups [javax.validation.groups.Default, ]
    at org.hibernate.cfg.beanvalidation.BeanValidationEventListener.validate(BeanValidationEventListener.java:132)
    at org.hibernate.cfg.beanvalidation.BeanValidationEventListener.onPreInsert(BeanValidationEventListener.java:71)
    at org.hibernate.action.EntityInsertAction.preInsert(EntityInsertAction.java:177)
    at org.hibernate.action.EntityInsertAction.execute(EntityInsertAction.java:72)
    at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:268)
    at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:260)
    at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:179)
    at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:321)
    at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:51)
    at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1206)
    at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:375)
    at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:137)
    at org.springframework.orm.hibernate3.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:656)
    at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:754)
    at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:723)
    at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:393)
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:120)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
    at $Proxy212.addDepartment(Unknown Source)
    at com.myapp.beans.DepartmentBean.addOrUpdateDepartment(DepartmentBean.java:105)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.el.parser.AstValue.invoke(AstValue.java:262)
    at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:278)
    at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
    at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)

这是怎么引起的，现在可以解决吗？

---

更新：这是视图的相关部分：

<h:form>         
    <ice:panelGrid columns="3">
        <h:outputLabel>Department Name:</h:outputLabel>
        <h:inputText id="name" value="#{departmentBean.departmentObj.name}" />
        <h:message for="name" />
    </ice:panelGrid>        
</h:form>
<h:form>
    <ice:panelGroup>
        <h:commandLink value="Add New" action="#{departmentBean.addOrUpdateDepartment}" />
    </ice:panelGroup>
</h:form>

Answer 1

来自堆栈跟踪：

at com.myapp.beans.DepartmentBean.addOrUpdateDepartment(DepartmentBean.java:105)
...
at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)

这意味着无论如何都会调用您的 JSF bean 操作方法，而这应该被空 name 字段上的验证约束阻止，并且您应该在 <h:message> 或 <h:messages> 中看到验证错误表格。

这只能意味着您已将immeditate="true" 放在命令按钮/链接上，这将导致在表单处理中跳过所有不具有此属性的输入组件：

<h:commandButton ... immediate="true" />

或者您在 web.xml 中有此上下文参数，这将跳过对空字段的验证：

<context-param>
    <param-name>javax.faces.VALIDATE_EMPTY_FIELDS</param-name>
    <param-value>false</param-value>
</context-param>

或者您在视图中通过以下标记禁用了 bean 验证：

<f:validateBean disabled="true" />

确保你没有它们。

---

更新：根据您的更新，您犯了一个典型的错误：您将提交按钮的形式与输入字段不同。提交按钮需要与您希望随提交一起发送的输入字段采用相同的形式。