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JSF事件不会在第一次使用screen元素时触发，但随后会正常工作

jsf primefaces

JSF事件不会在第一次使用screen元素时触发，但随后会正常工作,jsf,primefaces,Jsf,Primefaces,下面是一段简单的代码，但它并没有按预期工作。该按钮仅在我第二次按下时开始工作，并显示预期的错误消息。第一次它什么也没做 <!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="h

下面是一段简单的代码，但它并没有按预期工作。该按钮仅在我第二次按下时开始工作，并显示预期的错误消息。第一次它什么也没做

<!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"
    xmlns:p="http://primefaces.org/ui">

<h:head>
   <title>Some Title</title>
</h:head>

<h:body>
   <h:form>
      <p:panelGrid id="panel" columns="2" border="0" cellpadding="10" cellspacing="1">      
         <p:outputLabel value="Enter Username" />
         <p:inputText id="username" size="20" label="UserName" required="true">
            <f:validateLength for="username" minimum="5" maximum="20" />            
         </p:inputText>

         <p:outputLabel value="Test" />
         <p:commandButton id="submit" value="Submit" action="result"/>
      </p:panelGrid>
      <p:messages autoUpdate="true" />
   </h:form>
</h:body>
</html>
当什么都没有发生时，请先单击

第二次点击时，它的工作

我在Glassfish 3.1.2，Mojarra 2.1.9，PrimeFaces 5.2

谢谢

问题似乎在于Glassfish自己的Mojarra libs与我在项目中使用的MyFaces libs发生了冲突，导致了一个肮脏的类路径

以下操作修复了该问题：

从项目的类路径中删除MyFaces LIB “替换我的脸” web.xml中Mojarra侦听器的侦听器，如下所示：
非常感谢@BalusC指出我的环境可能有问题

失败操作期间的HTTP请求/响应是什么？按F12并打开网络选项卡。然而，这是同一个问题吗@BalusC I更新了我的问题，以显示页面首次加载、第一次单击和第二次单击时的HTTP请求/响应周期。这看起来不像是与您链接的问题的重复，因为我只使用了1个表单，而且我的表单已经有了id。@BalusC在diff viewer中查看这一点，看起来工作和非工作单击请求之间的唯一区别是前者附加了一个额外的POST参数：javax.faces.ViewState=。。。当然还有不同的内容长度。缺少javax.faces.ViewState参数会导致表单无法工作，因为根本没有JSF视图状态，所以基本上会创建一个全新的视图。上述问题显示了如何修复它。但是，这个问题预计不会在给定的代码段上发生。所以，要么你们过于简单化，要么你们的环境中存在更多的问题。只有你才能知道为什么javax.faces.ViewState没有被发送到第一位。我唯一能想到的是MyFaces和Mojarra libs互相弄乱了。Glassfish似乎有自己的Mojarra实现。我尝试用JSF2.1 MyFaces-bundle-2.1.17.jar的最新MyFaces二进制文件替换glass fish/modules/中的javax.faces.jar。但是服务器不会启动，所以我放弃了这个想法，放回了Mojarra库，但升级到了2.1.9——我认为这没问题，因为我在Eclipse项目设置中选择了JSF2.1。然而，看看上面的HTTP响应，我看到报头X-Powered-By返回JSF/2.0。 
<!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"
    xmlns:p="http://primefaces.org/ui">

<h:head>
   <title>Some Title</title>
</h:head>

<h:body>
   <h:form>
      <p:panelGrid id="panel" columns="2" border="0" cellpadding="10" cellspacing="1">      
         <p:outputLabel value="Enter Username" />
         <p:inputText id="username" size="20" label="UserName" />

         <p:outputLabel value="Test" />
         <p:commandButton value="Continue" actionListener="#{signupBean.signup}" icon="ui-icon-check" />
      </p:panelGrid>
      <p:messages autoUpdate="true" />
   </h:form>
</h:body>
</html>

<p:selectOneMenu id="country" value="#{signupBean.countryId}" style="width:200px">
    <p:ajax update="province" />
    <f:selectItem itemLabel="Select Country" itemValue="0" noSelectionOption="true" />
    <f:selectItems value="#{countriesBean.countries}" var="country" itemValue="#{country.id}" itemLabel="#{country.name}" />
</p:selectOneMenu>

<p:selectOneMenu id="province" value="#{signupBean.provinceId}" style="width:200px">
    <f:selectItem itemLabel="Select State or Province" itemValue="0" noSelectionOption="true" />
    <f:selectItems value="#{signupBean.provinces}" var="province" itemValue="#{province.provinceId}" itemLabel="#{province.name}" />
</p:selectOneMenu>

Request
GET                 /PictabiteServer/faces/pages/venues/zzbTest.xhtml HTTP/1.1
Host:               localhost:8080
Accept:             text/html,application/xhtml+xml,application/xml;q=0.9,*/ *;q=0.8
Cookie:             SESSIONID=6b770d215805cacdf9f6a1d0d29c; has_js=1
User-Agent:         Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_5) AppleWebKit/600.8.9 (KHTML, like Gecko) Version/8.0.8 Safari/600.8.9
Accept-Language:    en-us
Accept-Encoding:    gzip, deflate
Connection:         keep-alive

Response
HTTP/1.1            200 OK
X-Powered-By:       JSF/2.0
Content-Type:       text/html;charset=UTF-8
Content-Length:     2679
Date:               Tue, 20 Oct 2015 19:56:24 GMT

Request
POST                /PictabiteServer/faces/pages/venues/zzbTest.xhtml HTTP/1.1
Host:               localhost:8080
Accept:             application/xml, text/xml, */ *; q=0.01
Faces-Request:      partial/ajax
X-Requested-With:   XMLHttpRequest
Accept-Encoding:    gzip, deflate
Accept-Language:    en-us
Content-Type:       application/x-www-form-urlencoded; charset=UTF-8
Origin:             http://localhost:9181
Content-Length:     188
User-Agent:         Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_5) AppleWebKit/600.8.9 (KHTML, like Gecko) Version/8.0.8 Safari/600.8.9
Referer:            http://localhost:9181/PictabiteServer/faces/pages/venues/zzbTest.xhtml
Connection:         keep-alive
Cookie:             SESSIONID=6b770d215805cacdf9f6a1d0d29c; has_js=1
Payload:            javax.faces.partial.ajax=true&javax.faces.source=form%3Asubmit&javax.faces.partial.execute=%40all&javax.faces.partial.render=form&form%3Asubmit=form%3Asubmit&form%3Ausername=&form_SUBMIT=1

Response
HTTP/1.1            200 OK
X-Powered-By:       JSF/2.0
Cache-Control:      no-cache
Content-Type:       text/xml;charset=UTF-8
Content-Length:     2534
Date:               Tue, 20 Oct 2015 19:59:33 GMT
Payload:            
<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE html>
<html>
<head>
    <![CDATA[
    <form action="/PictabiteServer/faces/pages/venues/zzbTest.xhtml" enctype=
    "application/x-www-form-urlencoded" id="form" method="post" name="form">
        <table class="ui-panelgrid ui-widget" id="form:panel" role="grid">
            <tbody>
                <tr class="ui-widget-content" role="row">
                    <td class="ui-panelgrid-cell" role="gridcell"><label class=
                    "ui-outputlabel ui-widget" id="form:j_idt6">Enter
                    Username</label></td>
                    <td class="ui-panelgrid-cell" role="gridcell">
                        <input aria-required="true" class=
                        "ui-inputfield ui-inputtext ui-widget ui-state-default ui-corner-all"
                        id="form:username" name="form:username" size="20" type=
                        "text">
                        <script id="form:username_s" type="text/javascript">
                        <!--
                        PrimeFaces.cw("InputText","widget_form_username",{id:"form:username",widgetVar:"widget_form_username"});
                        //-->
                        </script>
                    </td>
                </tr>
                <tr class="ui-widget-content" role="row">
                    <td class="ui-panelgrid-cell" role="gridcell"><label class=
                    "ui-outputlabel ui-widget" id=
                    "form:j_idt7">Test</label></td>
                    <td class="ui-panelgrid-cell" role="gridcell">
                        <button class=
                        "ui-button ui-widget ui-state-default ui-corner-all ui-button-text-only"
                        id="form:submit" name="form:submit" onclick=
                        "PrimeFaces.ab({s:&quot;form:submit&quot;,u:&quot;form&quot;});return false;"
                        type="submit"><span class=
                        "ui-button-text ui-c">Submit</span></button>
                        <script id="form:submit_s" type="text/javascript">
                        <!--
                        PrimeFaces.cw("CommandButton","widget_form_submit",{id:"form:submit",widgetVar:"widget_form_submit"});
                        //-->
                        </script>
                    </td>
                </tr>
            </tbody>
        </table><!-- <p:messages autoUpdate="true" /> -->
        <div aria-live="polite" class="ui-message" id="form:j_idt9">
        </div><input name="form_SUBMIT" type="hidden" value="1">
    </form>
</body>
</html>]]>
    <![CDATA[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]]>
    <title></title>
</head>
<body>
</body>
</html>

Request
POST                /PictabiteServer/faces/pages/venues/zzbTest.xhtml HTTP/1.1
Host:               localhost:8080
Accept:             application/xml, text/xml, */ *; q=0.01
Faces-Request:      partial/ajax
X-Requested-With:   XMLHttpRequest
Accept-Encoding:    gzip, deflate
Accept-Language:    en-us
Content-Type:       application/x-www-form-urlencoded; charset=UTF-8
Origin:             http://localhost:9181
Content-Length:     951
User-Agent:         Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_5) AppleWebKit/600.8.9 (KHTML, like Gecko) Version/8.0.8 Safari/600.8.9
Referer:             http://localhost:9181/PictabiteServer/faces/pages/venues/zzbTest.xhtml
Connection:         keep-alive
Cookie:             SESSIONID=6b770d215805cacdf9f6a1d0d29c; has_js=1
Payload:            javax.faces.partial.ajax=true&javax.faces.source=form%3Asubmit&javax.faces.partial.execute=%40all&javax.faces.partial.render=form&form%3Asubmit=form%3Asubmit&form%3Ausername=&form_SUBMIT=1&javax.faces.ViewState=xx0mj9nLEgqpT1Qzy%2BC%2BEOPBDpgzlWfrR47DK7Jrk7FQOmB3AoP9QejbqT9qxvCnkXXkd9atuFv4K78lufbk%2BqH%2BbNArqpnjf2p48aHz8pe5gGbbmv2RB2LF1jauia2rP9UbsDKgFRmy6CrlGy4H70h40u4Ys9Jvhc83utraiA8kELR5Hc%2B7lnaF3ABTt0Xnhj2jAT4QzPyCHCEKyZpU3OeN9eW5JhDYK18U0uiND4OYcbHZsfUsphazJZ7q9%2Fdv83QA3X6Wx2CGo9XlenaiFdzRi6btnXaost%2BLfHr9Yd8VCTQrImmR21i9nQLNiujQAiEPEbcz3cbWOTUGbrUfMFIYm3GaFPyXZAZmqF3OPyFpX1sd0IJm31IYm3GaFPyXi1fDUjlkMX7da9AALtf%2Byr7cGAfLWthbyDplp3xbCvAz%2FolFB%2FapmqkmXyE6TJMSP%2BtaaAhNDdsDz6QF27UCq1IEVl62P6zkVdR1WkREh%2FhQluZ6xcOFj93EqzKxJglgJqEsXAutHGNe%2BtgcBumIonsWVDKDN31s9HwjLytEUcsF21bCgL%2Bz9zBxDWrwLp2CG6jM%2B1PmBH35HiPVcEjla3iU2eV2fgNhn8FvRsM3TkydodlIc1eGpCSb2eGxH8HL%2F87IeMdlt0bEULSyjE%2BYAjDPhT3%2BKVpjqwaz1b7z9H2Nh5Hllsp%2BA5qJGzg%3D

Response
HTTP/1.1            200 OK
X-Powered-By:       JSF/2.0
Cache-Control:      no-cache
Content-Type:       text/xml;charset=UTF-8
Content-Length:     3013
Date:               Tue, 20 Oct 2015 20:05:12 GMT
Payload:            
<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE html>
<html>
<head>
    <![CDATA[    <form action="/PictabiteServer/faces/pages/venues/zzbTest.xhtml" enctype=
    "application/x-www-form-urlencoded" id="form" method="post" name="form">
        <table class="ui-panelgrid ui-widget" id="form:panel" role="grid">
            <tbody>
                <tr class="ui-widget-content" role="row">
                    <td class="ui-panelgrid-cell" role="gridcell"><label class=
                    "ui-outputlabel ui-widget" id="form:j_idt6">Enter
                    Username</label></td>
                    <td class="ui-panelgrid-cell" role="gridcell">
                        <input aria-required="true" class=
                        "ui-inputfield ui-inputtext ui-widget ui-state-default ui-corner-all ui-state-error"
                        id="form:username" name="form:username" size="20" type=
                        "text" value="">
                        <script id="form:username_s" type="text/javascript">
                        <!--
                        PrimeFaces.cw("InputText","widget_form_username",{id:"form:username",widgetVar:"widget_form_username"});
                        //-->
                        </script>
                    </td>
                </tr>
                <tr class="ui-widget-content" role="row">
                    <td class="ui-panelgrid-cell" role="gridcell"><label class=
                    "ui-outputlabel ui-widget" id=
                    "form:j_idt7">Test</label></td>
                    <td class="ui-panelgrid-cell" role="gridcell">
                        <button class=
                        "ui-button ui-widget ui-state-default ui-corner-all ui-button-text-only"
                        id="form:submit" name="form:submit" onclick=
                        "PrimeFaces.ab({s:&quot;form:submit&quot;,u:&quot;form&quot;});return false;"
                        type="submit"><span class=
                        "ui-button-text ui-c">Submit</span></button>
                        <script id="form:submit_s" type="text/javascript">
                        <!--
                        PrimeFaces.cw("CommandButton","widget_form_submit",{id:"form:submit",widgetVar:"widget_form_submit"});
                        //-->
                        </script>
                    </td>
                </tr>
            </tbody>
        </table><!-- <p:messages autoUpdate="true" /> -->
        <div aria-live="polite" class=
        "ui-message ui-message-error ui-widget ui-corner-all" id="form:j_idt9">
            <span class="ui-message-error-icon"></span><span class=
            "ui-message-error-detail">UserName: Validation Error: Value is
            required.</span>
        </div><input name="form_SUBMIT" type="hidden" value="1">
    </form>]]>
    <![CDATA[xx0mj9nLEgqpT1Qzy+C+EOPBDpgzlWfrR47DK7Jrk7FQOmB3AoP9QejbqT9qxvCnkXXkd9atuFv4K78lufbk+qH+bNArqpnjf2p48aHz8pe5gGbbmv2RB2LF1jauia2rP9UbsDKgFRmy6CrlGy4H70h40u4Ys9Jvhc83utraiA8kELR5Hc+7lnaF3ABTt0Xnhj2jAT4QzPyCHCEKyZpU3OeN9eW5JhDYK18U0uiND4OYcbHZsfUsphazJZ7q9/dv83QA3X6Wx2CGo9XlenaiFdzRi6btnXaost+LfHr9Yd8VCTQrImmR21i9nQLNiujQM5JcCsg7JifdpiiuudmDswM/MBwgukOv29N5DulgW+Z8ZyzewXf59dBIejAk2ZA+yb4xK9rOeXQ+SmuXGQbEfmbL/M1mMQu9GLpWVz6T4vZQugK/IIzu/Xy9ZjaAGADKs6ikCgHJhHUuqMaYc3MCAE9DFXz/6oBbsTNk6gtMP222ZCEkYXzli1762BwG6Yii0JIWxUiD7I/37LHdN9NM2Ub4coNHfQyFw8jVus8EplV0URb5c7a0dst0JW0r2vh9sSqzrFMWqUHrz1MXfpWQcN3AlYb+If9sZgYS18sybSXN9KbwxaTpn2/FhykQZprHRb/ml3JS0kZAtQQVEQx/t7tEHhQT34DPREmQu0CWZ+PpBho06WB+WB0+O+5CyHzCEVP8E7PJ9WLnxxE4aVLxmClp1ON28Jf3soqhmkQVOibZPAypHAaNzdg/H5kzgWHzzwlZxgjpi7kwd2HFRT3UX8d0432oRunudvnluvpwXjon8JQ4K5Ts007SHgkdqhpz6GUGEAXqUzHtP5AAFrLC0eAQhPCX1OtL/9+LytYXyzl9caQyPBcrT9Lpbl3AeHL1rlV15A==]]>
    <title></title>
</head>
<body>
    {"validationFailed":true}
</body>
</html>

<listener>
    <listener-class>com.sun.faces.config.ConfigureListener</listener-class> <!-- for Mojarra -->
    <!-- <listener-class>org.apache.myfaces.webapp.StartupServletContextListener</listener-class>  --> <!-- for MyFaces -->
</listener>