Question

我想在错误的字段旁边显示错误。我有我的页面的代码：

<!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:ui="http://java.sun.com/jsf/facelets"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:f="http://java.sun.com/jsf/core">

<ui:composition template="/WEB-INF/templates/basic.xhtml">
    <ui:define name="content">
        <h:form>
            <h:panelGrid columns="3">
                <h:outputText value="Firstname"/>
                <h:inputText id="firstName" value="#{account.firstName}" required="true">
                    <f:validator validatorId="stringAlphaValidator"/>
                </h:inputText>
                <h:message for="firstName" errorStyle="color:red; display:block"/>
                <h:outputText value="Lastname"/>
                <h:inputText id="lastName" value="#{account.lastName}" required="true">
                    <f:validator validatorId="stringAlphaValidator"/>
                </h:inputText>
                <h:message for="lastName" errorStyle="color:red; display:block"/>
                <h:outputText value="Login"/>
                <h:inputText id="login" value="#{account.login}" required="true">
                    <f:validator validatorId="stringAlphaValidator"/>
                </h:inputText>
                <h:message for="login" errorStyle="color:red; display:block"/>
                <h:outputText value="Password"/>
                <h:inputText id="password" value="#{account.password}" required="true">
                </h:inputText>
                <h:message for="password" errorStyle="color:red; display:block"/>
                <h:outputText value="Address"/>
                <h:inputText id="address" value="#{account.address}" required="true">
                    <f:validator validatorId="stringAlphaNumericValidator"/>
                </h:inputText>
                <h:message for="address" errorStyle="color:red; display:block"/>
                <h:outputText value="Email"/>
                <h:inputText id="email" value="#{account.email}" required="true">
                    <f:validator validatorId="emailAddressValidator"/>
                </h:inputText>
                <h:message for="email" errorStyle="color:red; display:block"/>
            </h:panelGrid>
            <h:commandButton value="Register"/>
            <h:messages globalOnly="true"/>
        </h:form>
    </ui:define>
</ui:composition>
</html>

如果某个字段为空，我按下Register按钮，我就知道了（这里所有字段都是空的）：

Error while empty fields

（抱歉，错误是法语。我不知道它是来自我的eclipse语言还是我的tomcat服务器）

我没写这个！这是我的程序以某种方式自行编写的文本...如何删除它？

此外，这是一个注册页面，我想向我的数据库添加用户（如果字段正确），然后使用操作login更改页面。如何在更改页面之前调用方法来执行此操作？

如果你需要查看更多代码，比如验证器类，我可以添加它。

Answer 1

这应该有用。

<h:inputText id="lastName" value="#{account.lastName}" required="true" requiredMessage="Please enter your Lastname">

您验证的字段可以添加validatorMessage="<Message>"

**更新 * 如果您想使用Bean验证，如我的评论中所述，请采用以下方式：

// for example your NamesBean
@Named(value = "namesBean")
@SessionScoped
public class NamesBean {

// attributes

public void setFirstName(String firstName) {
 this.firstName = firstName;
}

@Size(min=3, max=10, message="Min 3 and max 10 characters")
public String getFirstname() {
 return firstName;
}

}

和xhtml

<h:message for="lastName"/>
<h:inputText id="lastName" value="#{account.lastName}" required="true" requiredMessage="Please enter your Lastname">

多数民众赞成。

Answer 2

我这样管理（个人）：

<!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:ui="http://java.sun.com/jsf/facelets"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:f="http://java.sun.com/jsf/core">

<ui:composition template="/WEB-INF/templates/basic.xhtml">
    <ui:define name="content">
        <h:form>
            <h:panelGrid columns="3">
                <h:outputText value="Firstname"/>
                <h:inputText id="firstName" value="#{account.firstName}" required="true" requiredMessage="The field is empty" validatorMessage="String is not valid (only characters a-z A-Z)">
                    <f:validateRegex pattern="[a-zA-Z]+"/>
                </h:inputText>
                <h:message for="firstName" errorStyle="color:red; display:block"/>
                <h:outputText value="Lastname"/>
                <h:inputText id="lastName" value="#{account.lastName}" required="true" requiredMessage="The field is empty" validatorMessage="String is not valid (only characters a-z A-Z)">
                    <f:validateRegex pattern="[a-zA-Z]+"/>
                </h:inputText>
                <h:message for="lastName" errorStyle="color:red; display:block"/>
                <h:outputText value="Login"/>
                <h:inputText id="login" value="#{account.login}" required="true" requiredMessage="The field is empty" validatorMessage="String is not valid (only characters a-z A-Z 0-9)">
                    <f:validateRegex pattern="[a-zA-Z0-9]+"/>
                </h:inputText>
                <h:message for="login" errorStyle="color:red; display:block"/>
                <h:outputText value="Password"/>
                <h:inputSecret id="password1" value="#{account.password1}" required="true" requiredMessage="Enter a password">
                </h:inputSecret>
                <h:message for="password1" errorStyle="color:red; display:block"/>
                <h:outputText value=""/>
                <h:inputSecret id="password2" value="#{account.password2}"/>
                <h:outputText value=""/>
                <h:outputText value="Address"/>
                <h:inputText id="address" value="#{account.address}" required="true" requiredMessage="The field is empty" validatorMessage="Wrong address (eg.: 42bis My address)">
                    <f:validateRegex pattern="[a-zA-Z0-9]+ [a-zA-Z ]+"/>
                </h:inputText>
                <h:message for="address" errorStyle="color:red; display:block"/>
                <h:outputText value="Email"/>
                <h:inputText id="email" value="#{account.email}" required="true" requiredMessage="The field is empty" validatorMessage="The email is not valid">
                    <f:validateRegex pattern="^[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,4}$"/>
                </h:inputText>
                <h:message for="email" errorStyle="color:red; display:block"/>
            </h:panelGrid>
            <h:commandButton value="Register" action="#{account.action}"/>
            <h:messages globalOnly="true"/>
        </h:form>
    </ui:define>
</ui:composition>
</html>

如何处理h：inputText验证？

2 个答案: