gpt4 book ai didi

java - 更新和处理在 JSF 2.0 Primefaces 3.4 中无法正常工作

转载 作者:行者123 更新时间:2023-12-02 07:26:18 25 4
gpt4 key购买 nike

在此页面中,我将让用户通过单击复选框来使密码可见。实际上,两个输入( passwordconPassword )应该隐藏,另一个输入(passwordV)应该显示。所有这 3 个输入都具有相同的值,并且当用户在这 2 种状态之间切换时需要保留它们的值:(有两个可见的 secret 字段或有一个纯文本字段)

我把页面和bean代码放在​​这里:

JSF 页面:

<?xml version='1.0' encoding='UTF-8' ?> <!DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <ui:composition xmlns:ui="http://java.sun.com/jsf/facelets"
template="./templates/main_template.xhtml"
xmlns:p="http://primefaces.org/ui"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns="http://www.w3.org/1999/xhtml">

<ui:define name="subTitle">
:: #{lbls.newEntry} </ui:define>

<ui:define name="content">
<p:panel rendered="#{current.loggedIn}" header="#{lbls.newEntry}" >
<h:form id="frmEntry">
<h:panelGrid columns="3">

<h:panelGroup>
<h:outputLabel for="title" value="#{lbls.title}:"/>
<p:focus for="title"/>
</h:panelGroup>
<p:inputText id="title" value="#{entry.passwordEntry.title}" maxlength="100" label="#{lbls.title}" required="true"/>
<p:message for="title"/>

<h:outputLabel for="description" value="#{lbls.description}:"/>
<p:inputTextarea id="description" value="#{entry.passwordEntry.description}" maxlength="500" rows="3" cols="40" label="#{lbls.description}"/>
<p:message for="description"/>

<p:spacer height="10"/>
<p:spacer height="10"/>
<p:spacer height="10"/>

<h:outputLabel for="username" value="#{lbls.username}:"/>
<p:inputText id="username" value="#{entry.passwordEntry.username}" maxlength="100" label="#{lbls.username}"/>
<p:message for="username"/>

<h:outputLabel for="password" id="lblPassword" value="#{lbls.password}:" styleClass="#{entry.showPasswords ? 'none' : ''}" />
<p:password id="password" feedback="true" value="#{entry.passwordEntry.password}" match="conPassword" maxlength="100"
label="#{lbls.password}" promptLabel="#{lbls.strengthPromp}" weakLabel="#{lbls.weakPassword}"
goodLabel="#{lbls.goodPassword}" strongLabel="#{lbls.strongPassword}" styleClass="#{entry.showPasswords ? 'none' : ''}"
/>
<p:message id="msgPassword" for="password" class="#{entry.showPasswords ? 'none' : ''}"/>

<h:outputLabel id="lblConPassword" for="conPassword" value="#{lbls.conPassword}:"
styleClass="#{entry.showPasswords ? 'none' : ''}"/>
<p:password id="conPassword" value="#{entry.passwordEntry.password}" label="#{lbls.conPassword}" maxlength="100"
styleClass="#{entry.showPasswords ? 'none' : ''}"/>
<p:message id="msgConPassword" for="conPassword" class="display: #{!entry.showPasswords ? 'none' : ''}"/>

<h:outputLabel id="lblPasswordV" for="passwordV" value="#{lbls.password}:"
styleClass="#{!entry.showPasswords ? 'none' : ''}"/>
<p:inputText id="passwordV" value="#{entry.passwordEntry.password}" maxlength="100"
label="#{lbls.password}"
styleClass="#{!entry.showPasswords ? 'none' : ''}"/>
<p:message id="msgPasswordV" for="passwordV"
class="#{!entry.showPasswords ? 'none' : ''}"/>

<h:outputLabel for="showPasswords" value="#{lbls.showPasswords}:"/>
<p:selectBooleanCheckbox id="showPasswords" label="#{lbls.showPasswords}" value="#{entry.showPasswords}">
<p:ajax process="password passwordV conPassword" update="password passwordV conPassword lblPassword lblPasswordV lblConPassword msgPassword msgConPassword msgPasswordV"/>
</p:selectBooleanCheckbox>
<h:outputText/>

<p:spacer height="10"/>
<p:spacer height="10"/>
<p:spacer height="10"/>

<h:outputLabel for="url" value="#{lbls.url}:"/>
<p:inputText id="url" value="#{entry.passwordEntry.url}" maxlength="255" label="#{lbls.url}"/>
<p:message for="url"/>

<h:outputLabel for="ip" value="#{lbls.ip}:"/>
<p:inputText id="ip" value="#{entry.passwordEntry.ip}" maxlength="255" label="#{lbls.ip}"/>
<p:message for="ip"/>

<p:spacer height="10"/>
<p:spacer height="10"/>
<p:spacer height="10"/>

<h:outputLabel for="tags" value="#{lbls.tags}:"/>
<p:autoComplete id="tags" value="#{entry.selectedTags}"
completeMethod="#{entry.selectTag}" converter="PasswordEntry" multiple="true"
var="tag" itemLabel="#{tag.title}" itemValue="#{tag}" />
<p:message for="tags"/>

<p:spacer height="10"/>
<p:spacer height="10"/>
<p:spacer height="10"/>

<h:outputText/>
<h:panelGroup layout="block" styleClass="right-align">
<p:commandButton value="#{lbls.save}" actionListener="#{entry.save(event)}"
update=":growl messages"/>
</h:panelGroup>


<f:facet name="footer">
<p:messages id="messages"/>
</f:facet>
</h:panelGrid>
</h:form>
</p:panel>

<ui:include src="/templates/not_logged_in.xhtml" rendered="!#{current.loggedIn}"/> </ui:define>

</ui:composition>

和 bean :

package package;


@ManagedBean(name = "entry")
@ViewScoped
public class PasswordEntryBean implements Serializable {

//<editor-fold defaultstate="collapsed" desc="FIELDS">
private static final Logger logger = LogUtil.getLogger(PasswordEntryBean.class);
private PasswordEntry passwordEntry;
@ManagedProperty(value = "#{current}")
private CurrentSessionBean current;
private Database database;
private List<PasswordTag> selectedTags = new ArrayList<PasswordTag>();
private Set<PasswordTag> tags;
private boolean showPasswords;
//</editor-fold>

//<editor-fold defaultstate="collapsed" desc="CONSTRUCTORS">
public PasswordEntryBean() {
passwordEntry = new PasswordEntry();
}

@PostConstruct
public void init() {
}
//</editor-fold>

//<editor-fold defaultstate="collapsed" desc="PROPERTIES">
public PasswordEntry getPasswordEntry() {
return passwordEntry;
}

public Database getDatabase() {
return database;
}

public boolean getShowPasswords() {
return showPasswords;
}

public void setShowPasswords(boolean showPasswords) {
this.showPasswords = showPasswords;
}

public void setDatabase(Database database) {
this.database = database;
}

public Set<PasswordTag> getTags() {
return tags;
}

public void setTags(Set<PasswordTag> tags) {
this.tags = tags;
}

public List<PasswordTag> getSelectedTags() {
return selectedTags;
}

public void setSelectedTags(List<PasswordTag> selectedTags) {
this.selectedTags = selectedTags;
}

public void setPasswordEntry(PasswordEntry passwordEntry) {
this.passwordEntry = passwordEntry;
}

public CurrentSessionBean getCurrent() {
return current;
}

public void setCurrent(CurrentSessionBean current) {
this.current = current;
}
//</editor-fold>
}
<小时/>

更新的代码

<小时/>

我只是编写了一个更简单的代码,以便您更容易理解我的问题:

JSF:

<?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://java.sun.com/jsf/html"
xmlns:p="http://primefaces.org/ui"
xmlns:f="http://java.sun.com/jsf/core">
<h:head>
<title>Facelet Title</title>
<style type="text/css">
.none {
display: none;
}
</style>
</h:head>
<h:body>
<h1>Register</h1>
<h:form id="frmRegistration">
<h:panelGrid columns="3">
<h:outputLabel value="Username:" for="username"/>
<p:inputText label="username" id="username" value="#{testBean.username}" required="true"/>
<p:message for="username"/>

<h:outputLabel value="Password:" id="lblPassword" for="password" styleClass="#{!testBean.visiblePassword ? '' : 'none'}"/>
<p:password label="password" id="password" value="#{testBean.password}"
styleClass="#{!testBean.visiblePassword ? '' : 'none'}"/>
<p:message for="password" id="msgPassword" class="#{!testBean.visiblePassword ? '' : 'none'}"/>

<h:outputLabel value="Confirm Password:" id="lblCpassword" for="cpassword" styleClass="#{!testBean.visiblePassword ? '' : 'none'}"/>
<p:password label="confirm password" id="cpassword" value="#{testBean.password}"
styleClass="#{!testBean.visiblePassword ? '' : 'none'}"/>
<p:message for="cpassword" id="msgCpassword" class="#{!testBean.visiblePassword ? '' : 'none'}"/>

<h:outputLabel value="Password:" id="lblVpassword" for="vpassword" styleClass="#{testBean.visiblePassword ? '' : 'none'}"/>
<p:inputText label="password" id="vpassword" value="#{testBean.password}"
styleClass="#{testBean.visiblePassword ? '' : 'none'}"/>
<p:message for="vpassword" id="msgVpassword" class="#{testBean.visiblePassword ? '' : 'none'}"/>

<h:outputLabel value="Show password"/>
<p:selectBooleanButton value="#{testBean.visiblePassword}"
onLabel="Yes" offLabel="No">
<p:ajax update="messages password cpassword vpassword lblPassword lblCpassword lblVpassword msgPassword msgCpassword msgVpassword"
process="messages password cpassword vpassword" listener="#{testBean.addMessage}" />
</p:selectBooleanButton>


<f:facet name="footer">
<p:commandButton actionListener="#{testBean.save(event)}" value="Save" update="messages"/>
<p:messages id="messages"/>
</f:facet>
</h:panelGrid>
</h:form>
</h:body>
</html>

还有 bean :

import javax.faces.application.FacesMessage;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ViewScoped;
import javax.faces.context.FacesContext;
import javax.faces.event.ActionEvent;

@ManagedBean
@ViewScoped
public class TestBean {

private String username;
private String password;
private boolean visiblePassword;

public void addMessage() {
String summary = visiblePassword ? "Checked" : "Unchecked";

FacesContext.getCurrentInstance().addMessage(null, new FacesMessage(summary));
}

public TestBean() {
}

public void save(ActionEvent event) {
}

public String getUsername() {
return username;
}

public void setUsername(String username) {
this.username = username;
}

public String getPassword() {
return password;
}

public void setPassword(String password) {
this.password = password;
}

public boolean isVisiblePassword() {
return visiblePassword;
}

public void setVisiblePassword(boolean visiblePassword) {
this.visiblePassword = visiblePassword;
}
}

如果我不向 <p:ajax 添加 process 属性,此代码可以隐藏两个字段并正确显示第三个字段。标签。但是需要此属性,以便当用户在两种模式(2 个 secret 字段/1 个纯文本字段)之间切换时这些字段保持其值

但是失败了!

================================================== ===========

第二次更新

我使用了重新显示并解决了空值的问题,但输入仍然不会隐藏/显示,除非我设置 updateprocess@form这对我的情况不利。

<?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://java.sun.com/jsf/html"
xmlns:p="http://primefaces.org/ui"
xmlns:f="http://java.sun.com/jsf/core">
<h:head>
<title>Facelet Title</title>
<style type="text/css">
.none {
display: none;
}
</style>
</h:head>
<h:body>
<h1>Register</h1>
<h:form id="frmRegistration">
<h:panelGrid columns="3">
<h:outputLabel value="Username:" for="username"/>
<p:inputText label="username" id="username" value="#{testBean.username}" required="true"/>
<p:message for="username"/>

<h:outputLabel value="Password:" id="lblPassword" for="password" rendered="#{!testBean.visiblePassword}"/>
<p:password redisplay="true" label="password" id="password" value="#{testBean.password}"
rendered="#{!testBean.visiblePassword}"/>
<p:message for="password" id="msgPassword" rendered="#{!testBean.visiblePassword}"/>

<h:outputLabel value="Confirm Password:" id="lblCpassword" for="cpassword" rendered="#{!testBean.visiblePassword}"/>
<p:password redisplay="true" label="confirm password" id="cpassword" value="#{testBean.password}"
rendered="#{!testBean.visiblePassword}"/>
<p:message for="cpassword" id="msgCpassword" rendered="#{!testBean.visiblePassword}"/>

<h:outputLabel value="Password:" id="lblVpassword" for="vpassword" rendered="#{testBean.visiblePassword}"/>
<p:inputText label="password" id="vpassword" value="#{testBean.password}"
rendered="#{testBean.visiblePassword}"/>
<p:message for="vpassword" id="msgVpassword" rendered="#{testBean.visiblePassword}"/>

<h:outputLabel value="Show password"/>
<p:selectBooleanButton value="#{testBean.visiblePassword}"
onLabel="Yes" offLabel="No">
<p:ajax update="messages password cpassword vpassword lblPassword lblCpassword lblVpassword msgPassword msgCpassword msgVpassword"
process="password cpassword vpassword" listener="#{testBean.addMessage}" />
</p:selectBooleanButton>


<f:facet name="footer">
<p:commandButton actionListener="#{testBean.save(event)}" value="Save" update="messages"/>
<p:messages id="messages"/>
</f:facet>
</h:panelGrid>
</h:form>
</h:body>
</html>

最佳答案

您的主要错误是您在客户端使用 CSS 来切换输入字段的可见性,而不是在服务器端使用 JSF。所以 JSF 基本上永远不知道哪一个被显示/隐藏。它所知道的是两个字段都被显示。因此它将处理这两个字段。由于您已将两个字段的值绑定(bind)到同一个属性,因此它最终将始终获得最后处理的字段的值。

您需要在服务器端使用 JSF 显示/隐藏输入字段。您可以使用为此提供的 rendered 属性。

rendered="#{testBean.visiblePassword}"

关于java - 更新和处理在 JSF 2.0 Primefaces 3.4 中无法正常工作,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/13552159/

25 4 0
Copyright 2021 - 2024 cfsdn All Rights Reserved 蜀ICP备2022000587号
广告合作:1813099741@qq.com 6ren.com