“A4J”未定义

Question

我在ie7上的ajax4jsf库有一个问题，它给我一个错误'A4J是未定义的‘，但这个错误不会出现在火狐和chrome上

我使用myfaces1.1.5和ajax4jsf1.1的库

这是我的web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" xmlns="java.sun.com/xml/ns/j2ee"; xmlns:xsi="w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="java.sun.com/xml/ns/j2ee java.sun.com/xml/ns/…;
<context-param>
<param-name>javax.faces.STATE_SAVING_METHOD</param-name>
<param-value>server</param-value>
</context-param>
<context-param>
<param-name>org.apache.myfaces.NUMBER_OF_VIEWS_IN_SESSION</param-name>
<param-value>20</param-value>
</context-param>
<context-param>
<param-name>org.apache.myfaces.SERIALIZE_STATE_IN_SESSION</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<param-name>org.apache.myfaces.COMPRESS_STATE_IN_SESSION</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<param-name>org.apache.myfaces.ALLOW_JAVASCRIPT</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<param-name>org.apache.myfaces.DETECT_JAVASCRIPT</param-name>
<param-value>false</param-value>
</context-param>
<context-param>
<param-name>org.apache.myfaces.PRETTY_HTML</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<param-name>org.apache.myfaces.AUTO_SCROLL</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<param-name>org.apache.myfaces.VALIDATE</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<param-name>org.apache.myfaces.ADD_RESOURCE_CLASS</param-name>
<param-value>org.apache.myfaces.renderkit.html.util.DefaultAddResource</param-value></context-param> 
<context-param>
<param-name>org.apache.myfaces.CHECK_EXTENSIONS_FILTER</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<param-name>org.apache.myfaces.RESOURCE_VIRTUAL_PATH</param-name>
<param-value>/faces/extensionResource</param-value>
</context-param>
<filter> 
<display-name>Ajax4jsf Filter</display-name>
<filter-name>ajax4jsf</filter-name>
<filter-class>org.ajax4jsf.Filter</filter-class>
</filter>
<filter-mapping>
<filter-name>ajax4jsf</filter-name>
<servlet-name>Faces Servlet</servlet-name>
<dispatcher>REQUEST</dispatcher>
<dispatcher>FORWARD</dispatcher>
<dispatcher>INCLUDE</dispatcher>
</filter-mapping>

谢谢。

Answer 1

我们有一个集群环境，其中IHS将流量定向到两个节点。部署未与一个节点正确同步，导致间歇性出现a4J not defined错误。重新启动节点和服务器，应用程序开始正常工作。

Answer 2

XYZ未定义。

这是一个典型的Javascript错误。因为它在真正的real浏览器中工作得很好，所以在服务器端完全没有问题。

唯一想到的是所使用/生成的javascript库中的冲突。我建议升级到可用的最新版本，并将所有内容都对齐。

Answer 3

将此添加到每个页面顶部。

<%@taglib uri="http://java.sun.com/jsf/core" prefix="f"%>
<%@taglib uri="http://java.sun.com/jsf/html" prefix="h"%>
<%@taglib uri="http://richfaces.org/a4j" prefix="a4j"%>
<%@taglib uri="http://richfaces.org/rich" prefix="rich"%>