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POJSF 2 - Bean Validation: validation failed -> empty values are replaced with last valid values from managed bean
 

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    <p><br> I do not understand the behaviour of JSF2 during valdation. Hope someone can help me. </p> <p>I have a form where the fields are validated after (ajax) submit - ok<br> If the validation failed a error message is shown - ok</p> <p>For my example when I enter a valid <em>birthday</em> and the field <em>name</em> is empty an errormessage for <em>name</em> is shown after submit.<br> Now when I enter a valid <em>name</em> and delete the input from the <em>birthday</em> field an errormessage is show for <em>birthday</em> (that's ok) but now the old 'valid' <em>birthday</em> stands also in the input field!?! </p> <p>How can I avoid this behaviour? When I submit an empty field I want to see an errormessage and an empty field...</p> <p>Here's my sample code: </p> <p>I use a ManagedBean (<em>TestBean</em>) that contains an EntityBean (<em>Contact</em>). The <em>Contact</em> contains validations per annoations.</p> <pre><code>public class Contact implements Serializable { @NotNull @Temporal(TemporalType.DATE) private Date birthday; @NotNull @Size(min=3, max=15) private String name; //... } </code></pre> <p>My <em>ManagedBean</em>: </p> <pre><code>@ManagedBean @ViewScoped public class TestBean implements Serializable { private Contact contact; @PostConstruct void init() { System.out.println("init..."); contact = new Contact(); } public void newContact(ActionEvent ae) { System.out.println("newContact..."); contact = new Contact(); } public void save() { System.out.println("save..."); //TODO do something with contact... } public Contact getContact() { return contact; } public void setContact(Contact contact) {this.contact = contact;} } </code></pre> <p>An here my JSF page: </p> <pre><code>&lt;html xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://java.sun.com/jsf/html" xmlns:f="http://java.sun.com/jsf/core" &gt; &lt;h:body&gt; &lt;h:form&gt; &lt;h:panelGrid columns="3"&gt; &lt;h:outputText value="Birthday: " /&gt; &lt;h:inputText id="birthday" value="#{testBean.contact.birthday}"&gt; &lt;f:convertDateTime/&gt; &lt;/h:inputText&gt; &lt;h:message for="birthday" /&gt; &lt;h:outputText value="Name: " /&gt; &lt;h:inputText id="name" value="#{testBean.contact.name}"/&gt; &lt;h:message for="name" /&gt; &lt;/h:panelGrid&gt; &lt;h:commandButton value="submit" action="#{testBean.save}"&gt; &lt;f:ajax execute="@form" render="@form"/&gt; &lt;/h:commandButton&gt; &lt;h:commandButton value="newContact" actionListener="#{testBean.newContact}" immediate="true"&gt; &lt;f:ajax render="@form"/&gt; &lt;/h:commandButton&gt; &lt;/h:form&gt; &lt;/h:body&gt; &lt;/html&gt; </code></pre> <p>at last a snippet from web.xml </p> <pre><code>&lt;context-param&gt; &lt;param-name&gt;javax.faces.INTERPRET_EMPTY_STRING_SUBMITTED_VALUES_AS_NULL&lt;/param-name&gt; &lt;param-value&gt;true&lt;/param-value&gt; &lt;/context-param&gt; &lt;context-param&gt; &lt;param-name&gt;javax.faces.VALIDATE_EMPTY_FIELDS&lt;/param-name&gt; &lt;param-value&gt;true&lt;/param-value&gt; &lt;/context-param&gt; </code></pre> <p>Thanks for some tips</p>
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