我正在使用JSF 2.1和PrimeFaces 3.2,服务器Tomcat 7开发应用程序。现在,我正在使用表单来注册新用户。问题出在转换器上。
我使用的标准字段很少,其中两个是密码。我有密码的自定义数据类型,所以我想使用转换器将字符串数据从字段转换为Bean中的Password变量。 Primefaces表单在提交后使用AJAX,可能存在问题。如果我完全填写表格,没有验证错误,一切正常。但是如果存在验证错误并且没有转换器错误(我检查转换器中的密码长度),则整个表单将停止工作。我必须刷新页面才能让它再次运行。
以下是一些消息来源:
密码类:
public class Password {
public static final short MIN_LENGTH = 5;
private String text;
private String hash;
public Password(String text) {
this.text = text;
this.hash = Hasher.sha512(text);
}
/**
* Get password instance with known hash only
* @param hash SHA-512 hash
* @return Password instance
*/
public static Password getFromHash(String hash) {
Password password = new Password(null);
password.hash = hash;
return password;
}
@Override
public int hashCode() {
return hash.hashCode();
}
@Override
public boolean equals(Object obj) {
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
final Password other = (Password) obj;
if ((this.hash == null) ? (other.hash != null) : !this.hash.equals(other.hash)) {
return false;
}
return true;
}
@Override
public String toString() {
return hash;
}
/**
* @return the text
*/
public String getText() {
return text;
}
}
密码转换器:
@FacesConverter(forClass = Password.class)
public class PasswordConverter implements Converter {
@Override
public Object getAsObject(FacesContext context, UIComponent component, String value) {
String text = (String) value;
if (text.length() >= Password.MIN_LENGTH) {
return new Password(text);
}
FacesMessage msg = new FacesMessage(Texter.get("forms/forms", "shortPassword").replace("%limit%", String.valueOf(Password.MIN_LENGTH)));
msg.setSeverity(FacesMessage.SEVERITY_ERROR);
throw new ConverterException(msg);
}
@Override
public String getAsString(FacesContext context, UIComponent component, Object value) {
try {
Password password = (Password) value;
return password.getText();
} catch (Exception ex) {
throw new ConverterException(ex);
}
}
}
facelet中的表单:
<h:form id="registration">
<p:panelGrid columns="3">
<h:outputLabel value="#{commonTxt.email}:" for="email" />
<p:inputText id="email" value="#{userRegistrationForm.email}" required="true" requiredMessage="#{formsTxt.msgEmpty}">
<f:validator validatorId="email" />
<f:validator validatorId="unique" />
<f:attribute name="entity" value="SystemUser" />
<f:attribute name="field" value="email" />
<f:attribute name="uniqueMessage" value="#{formsTxt.nonUniqueEmail}" />
</p:inputText>
<p:message for="email" />
<h:outputLabel value="#{usersTxt.password}:" for="password" />
<p:password id="password" value="#{userRegistrationForm.password}" binding="#{password}" autocomplete="off" feedback="true" weakLabel="#{formsTxt.passwordWeak}" goodLabel="#{formsTxt.passwordGood}" strongLabel="#{formsTxt.passwordStrong}" promptLabel="#{formsTxt.passwordPrompt}" />
<p:message for="password" />
<h:outputLabel value="#{usersTxt.passwordCheck}:" for="passwordCheck" />
<p:password id="passwordCheck" value="#{userRegistrationForm.passwordCheck}" binding="#{passwordCheckInput}" autocomplete="off">
<f:validator validatorId="match" />
<f:attribute name="matchAgainst" value="#{password}" />
<f:attribute name="matchMessage" value="#{formsTxt.passwordMismatch}" />
</p:password>
<p:message for="passwordCheck" />
<p:column /><p:column /><p:column />
<h:outputLabel value="#{usersTxt.name}:" for="name" />
<p:inputText id="name" value="#{userRegistrationForm.name}" maxlength="255" required="true" requiredMessage="#{formsTxt.msgEmpty}" />
<p:message for="name" />
<f:facet name="footer">
<p:commandButton value="#{usersTxt.register}" action="#{userRegistrationForm.register()}" update="registration" />
</f:facet>
</p:panelGrid>
</h:form>
我不会发布bean #{userRegistrationForm}
的代码,有两个带有getter和setter的Passwords属性。
任何有助于解决我的问题的帮助表示赞赏。提前谢谢。
答案 0 :(得分:1)
解决!我刚用FacesContext.getCurrentInstance().isValidationFailed()
来查看验证是否失败。如果发生故障,转换器现在返回null(转换将不会完成),在其他情况下转换器将返回适当的对象。并且表单在转换工作时工作正常。