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一尘不染

websphere 7（和Spring Roo）与javax.el.E​​LException不兼容

java

我有一个前端基于Spring Roo 1.1.2 jspx文件的应用程序。

每个想法在Tomcat 6中都可以正常工作，但是如果我在Websphere 7中部署相同的应用程序（类加载器：最后一个父级），则会出现异常：

java.lang.ClassCastException：java.lang.NullPointerException与javax.el.E​​LException不兼容

[13.04.11 09:53:55:493 UTC] 00000026 servlet       E com.ibm.ws.webcontainer.servlet.ServletWrapper service SRVE0068E: Uncaught exception created in one of the service methods of the servlet /WEB-INF/layouts/default.jspx in application cyber. Exception created : com.ibm.websphere.servlet.error.ServletErrorReport: java.lang.ClassCastException: java.lang.NullPointerException incompatible with javax.el.ELException
    at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:693)
    at com.ibm._jsp._default_5F_jspx._jspService(_default_5F_jspx.java:123)
    at com.ibm.ws.jsp.runtime.HttpJspBase.service(HttpJspBase.java:98)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1655)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1595)
    at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:104)
    at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:77)
    at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:895)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:932)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:500)
    at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178)
    at com.ibm.wsspi.webcontainer.servlet.GenericServletWrapper.handleRequest(GenericServletWrapper.java:121)
    at com.ibm.ws.jsp.webcontainerext.AbstractJSPExtensionServletWrapper.handleRequest(AbstractJSPExtensionServletWrapper.java:239)
    at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:341)
    at org.apache.tiles.servlet.context.ServletTilesRequestContext.forward(ServletTilesRequestContext.java:241)
    ...
Caused by: java.lang.ClassCastException: java.lang.NullPointerException incompatible with javax.el.ELException
    at org.apache.el.lang.ExpressionBuilder.prepare(ExpressionBuilder.java:139)
    at org.apache.el.lang.ExpressionBuilder.build(ExpressionBuilder.java:151)
    at org.apache.el.lang.ExpressionBuilder.createValueExpression(ExpressionBuilder.java:194)
    at org.apache.el.ExpressionFactoryImpl.createValueExpression(ExpressionFactoryImpl.java:67)
    at org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:773)
    at com.ibm.ws.jsp.tagfile.webinf.util._load_2D_scripts.doTag(_load_2D_scripts.java:74)
    at com.ibm._jsp._default_5F_jspx._jspx_meth_util_load$1scripts_0(_default_5F_jspx.java:140)
    at com.ibm._jsp._default_5F_jspx._jspService(_default_5F_jspx.java:94)
    ... 88 more

该应用程序具有Flex / BlazeDS部分，可以正常工作。但是这里也有JSP（x）部分。Spring控制器可以工作，但是
JSPX出问题了，我不知道从哪里开始 ，当我理解规范的权利时，WAS7提供了JSP 2.1，这正是我所需要的。

WAR的POM的相关部分是：

<dependency>
   <groupId>javax.servlet</groupId>
   <artifactId>com.springsource.javax.servlet.jsp.jstl</artifactId>         
   <version>1.2.0</version>         
 </dependency>
 <dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>servlet-api</artifactId>
    <version>2.5</version>
    <scope>provided</scope>
 </dependency>
 <dependency>
    <groupId>javax.servlet.jsp</groupId>
    <artifactId>jsp-api</artifactId>
    <version>2.1</version>
    <scope>provided</scope>     
  </dependency>

有人可以给我提示吗？

这是maven依赖树：

[INFO] +- cyber:cyber-core:jar:4.0.0.0-D1-SNAPSHOT:compile
[INFO] |  +- javax.validation:com.springsource.javax.validation:jar:1.0.0.GA:compile
[INFO] |  +- javax.transaction:com.springsource.javax.transaction:jar:1.1.0:compile
[INFO] |  +- org.apache.poi:poi:jar:3.6:compile
[INFO] |  +- net.sf.jxls:jxls-core:jar:0.9.9:compile
[INFO] |  |  +- commons-beanutils:commons-beanutils:jar:1.8.2:compile
[INFO] |  |  \- commons-jexl:commons-jexl:jar:1.1:compile
[INFO] |  |     \- junit:junit:jar:3.8.1:compile
[INFO] |  +- net.sf.jxls:jxls-reader:jar:0.9.9:compile
[INFO] |  +-    org.apache.commons:com.springsource.org.apache.commons.dbcp:jar:1.2.2.osgi:compile
[INFO] |  |  \- org.apache.commons:com.springsource.org.apache.commons.pool:jar:1.3.0:compile
[INFO] |  +- commons-io:commons-io:jar:1.4:compile
[INFO] |  +- org.apache.commons:com.springsource.org.apache.commons.collections:jar:3.2.1:compile
[INFO] |  +- commons-lang:commons-lang:jar:2.4:compile
[INFO] |  +- commons-math:commons-math:jar:1.2:compile
[INFO] |  +- jdom:jdom:jar:1.0:compile
[INFO] +- org.springframework:org.springframework.core:jar:3.0.5.RELEASE:compile
[INFO] +- org.springframework:org.springframework.beans:jar:3.0.5.RELEASE:compile
[INFO] |  \- org.springframework:org.springframework.asm:jar:3.0.5.RELEASE:compile
[INFO] +- org.springframework:org.springframework.context:jar:3.0.5.RELEASE:compile
[INFO] |  \- org.springframework:org.springframework.expression:jar:3.0.5.RELEASE:compile
[INFO] +- org.springframework:org.springframework.web:jar:3.0.5.RELEASE:compile
[INFO] |  \- org.aopalliance:com.springsource.org.aopalliance:jar:1.0.0:compile
[INFO] +- org.springframework:org.springframework.web.servlet:jar:3.0.5.RELEASE:compile
[INFO] +- org.springframework:org.springframework.aop:jar:3.0.5.RELEASE:compile
[INFO] +- org.springframework:org.springframework.aspects:jar:3.0.5.RELEASE:compile
[INFO] +- org.springframework:org.springframework.orm:jar:3.0.5.RELEASE:compile
[INFO] |  +- org.springframework:org.springframework.jdbc:jar:3.0.5.RELEASE:compile
[INFO] |  \- org.springframework:org.springframework.transaction:jar:3.0.5.RELEASE:compile
[INFO] +- org.springframework:org.springframework.context.support:jar:3.0.5.RELEASE:compile
[INFO] +- org.springframework:spring-webmvc:jar:3.0.5.RELEASE:compile
[INFO] |  +- org.springframework:spring-asm:jar:3.0.5.RELEASE:compile
[INFO] |  +- org.springframework:spring-beans:jar:3.0.5.RELEASE:compile
[INFO] |  +- org.springframework:spring-context:jar:3.0.5.RELEASE:compile
[INFO] |  |  \- org.springframework:spring-aop:jar:3.0.5.RELEASE:compile
[INFO] |  +- org.springframework:spring-context-support:jar:3.0.5.RELEASE:compile
[INFO] |  +- org.springframework:spring-core:jar:3.0.5.RELEASE:compile
[INFO] |  +- org.springframework:spring-expression:jar:3.0.5.RELEASE:compile
[INFO] |  \- org.springframework:spring-web:jar:3.0.5.RELEASE:compile
[INFO] |     \- aopalliance:aopalliance:jar:1.0:compile
[INFO] +- org.springframework.webflow:spring-js-resources:jar:2.2.1.RELEASE:compile
[INFO] +- org.springframework.security:org.springframework.security.core:jar:3.0.3.RELEASE:compile
[INFO] |  \- org.apache.commons:com.springsource.org.apache.commons.logging:jar:1.1.1:compile
[INFO] +- org.springframework.security:org.springframework.security.web:jar:3.0.3.RELEASE:compile
[INFO] +- org.springframework.security:org.springframework.security.config:jar:3.0.3.RELEASE:compile
[INFO] +- org.apache.tiles:tiles-core:jar:2.2.1:compile
[INFO] |  +- org.apache.tiles:tiles-api:jar:2.2.1:compile
[INFO] |  +- commons-digester:commons-digester:jar:2.0:compile
[INFO] |  \- org.slf4j:jcl-over-slf4j:jar:1.5.10:compile
[INFO] +- org.apache.tiles:tiles-jsp:jar:2.2.1:compile
[INFO] |  +- org.apache.tiles:tiles-servlet:jar:2.2.1:compile
[INFO] |  \- org.apache.tiles:tiles-template:jar:2.2.1:compile
[INFO] +- org.tuckey:urlrewritefilter:jar:3.1.0:compile
[INFO] +- org.springframework:spring-oxm:jar:3.0.5.RELEASE:compile
[INFO] +- javax.servlet:com.springsource.javax.servlet.jsp.jstl:jar:1.2.0:compile
[INFO] |  \- org.apache.taglibs:com.springsource.org.apache.taglibs.standard:jar:1.1.2:compile
[INFO] +- javax.servlet:servlet-api:jar:2.5:provided
[INFO] +- javax.servlet.jsp:jsp-api:jar:2.1:provided
[INFO] +- org.aspectj:aspectjweaver:jar:1.6.9:compile
[INFO] +- org.aspectj:aspectjrt:jar:1.6.9:compile

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2020-12-03

共1个答案

一尘不染

使Roo生成的JSPX在Websphere 7上运行的4个步骤

或我过去两天的时间

问题是Roo（1.1.2）生成的JSPX文件与IBM Webshpere不兼容。因此，这不是库的问题。

要使Roo模板运行，您需要执行以下操作：

  • 第一个问题（导致java.lang.ClassCastException: java.lang.NullPointerException incompatible with javax.el.ELException异常的原因是<util:load-scripts />WEB-INF / layout / default.jspx中的这一行，我完全不知道为什么，因为所有其他tagx都可以工作（ 我 整晚都在这里 度过 ）。最简单的工作是“包含”直接在default.jspx中直接手动找到/WEB-INF/tags/util/load-scripts.tagx的相关内容（然后可以删除load-scripts.tagx）

  • 将会发生一个新的验证错误：这是因为IBM似乎在解析jstl函数时遇到了问题'。例如：${fn:toLowerCase(userLocale)}。这完全是在步骤1中从复制load-scripts.tagx到的行之一default.jspx。我的工作原理是：替换为：

    <script type="text/javascript">var djConfig = {parseOnLoad: false, isDebug: false, locale: '${fn:toLowerCase(userLocale)}'};</script>

通过：

   <c:set var="userLocalLowerCase" value="${fn:toLowerCase(userLocale)}" /> 
   <script type="text/javascript">var djConfig = {parseOnLoad: false, isDebug: false, locale: '${userLocalLowerCase}'};</script>
  • 现在您将看到一些东西，但是我将看到输出，您将看到IBM Websphere 7不会从divs除去名称空间定义。但是在模板中，您将拥有很多这样的功能。<div xmlns:c="http://java.sun.com/jsp/jstl/core" xmlns:fn="http://java.sun.com/jsp/jstl/functions" xmlns:jsp="http://java.sun.com/JSP/Page" xmlns:spring="http://www.springframework.org/tags" version="2.0">因此，您需要做的是将它们全部提取到<jsp:root元素中（在所有jspx文件中）。这样文件看起来像这样：
    <jsp:root xmlns:c="http://java.sun.com/jsp/jstl/core" ... version="2.0">


    …

我不确定是否需要执行此步骤，但您不确定是否需要100％的下一步。

  • 现在，除了Java脚本之外，其他所有东西都可以使用。那是因为IBM Websphere 7，规范化JSPX输出。这样的行：
    <script src="${spring_dojo_url}" type="text/javascript"><!-- required for FF3 and Opera --></script>

成为<script src="${spring_dojo_url}" type="text/javascript" />不幸的是IE和Firefox（3）忽略这个脚本标签。解决方法是将<jsp:text> </jsp:text>所有（3）相关脚本标记的脚本部分放入步骤1中复制的脚本中。

    <script src="${dojo_url}" type="text/javascript"><!-- required for FF3 and Opera --><jsp:text> </jsp:text></script>
<script src="${spring_url}" type="text/javascript"><!-- /required for FF3 and Opera --><jsp:text> </jsp:text></script>
<script src="${spring_dojo_url}" type="text/javascript"><!-- required for FF3 and Opera --><jsp:text> </jsp:text></script>

至少您的default.jspx看起来像这样：

<jsp:root 
        xmlns:jsp="http://java.sun.com/JSP/Page"
        xmlns:fn="http://java.sun.com/jsp/jstl/functions"
        xmlns:c="http://java.sun.com/jsp/jstl/core"
        xmlns:tiles="http://tiles.apache.org/tags-tiles"
        xmlns:spring="http://www.springframework.org/tags"
        xmlns:util="urn:jsptagdir:/WEB-INF/tags/util"
        version="2.0">
<html>

    <jsp:output doctype-root-element="HTML" doctype-system="-//W3C//DTD HTML 4.01//EN" doctype-public="http://www.w3.org/TR/html4/strict.dtd"/>

    <jsp:directive.page contentType="text/html;charset=UTF-8" />  
    <jsp:directive.page pageEncoding="UTF-8" />

    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
        <meta http-equiv="X-UA-Compatible" content="IE=8" />

        <spring:url value="/resources/styles/standard.css" var="roo_css_url" />
        <spring:url value="/resources/dojo/dojo.js" var="dojo_url" />
        <spring:url value="/resources/dijit/themes/tundra/tundra.css" var="tundra_url" />
        <spring:url value="/resources/spring/Spring.js" var="spring_url" />
        <spring:url value="/resources/spring/Spring-Dojo.js" var="spring_dojo_url" />
        <spring:url value="/resources/images/favicon.ico" var="favicon" />
        <link rel="stylesheet" type="text/css" media="screen" href="${roo_css_url}"><!-- required for FF3 and Opera --></link>
        <link rel="stylesheet" type="text/css" href="${tundra_url}"><!-- required for FF3 and Opera --></link>
        <link rel="SHORTCUT ICON" href="${favicon}" />

        <!-- Get the user local from the page context (it was set by Spring MVC's locale resolver) -->
        <c:set var="userLocale">
          <c:out value="${pageContext.response.locale}" default="en" />
        </c:set>

        <c:set var="userLocalLowerCase" value="${fn:toLowerCase(userLocale)}" /> 
        <script type="text/javascript">var djConfig = {parseOnLoad: false, isDebug: false, locale: '${userLocalLowerCase}'};</script>
        <script src="${dojo_url}" type="text/javascript"><!-- required for FF3 and Opera --><jsp:text> </jsp:text></script>
        <script src="${spring_url}" type="text/javascript"><!-- /required for FF3 and Opera --><jsp:text> </jsp:text></script>
        <script src="${spring_dojo_url}" type="text/javascript"><!-- required for FF3 and Opera --><jsp:text> </jsp:text></script>
        <script language="JavaScript" type="text/javascript">dojo.require("dojo.parser");</script>

        <spring:message code="application_name" var="app_name"/>
        <title><spring:message code="welcome_h3" arguments="${app_name}" /></title>
    </head>

    <body class="tundra spring">
        <div id="wrapper">
            <tiles:insertAttribute name="header" ignore="true" />
            <tiles:insertAttribute name="menu" ignore="true" />   
            <div id="main">
                <tiles:insertAttribute name="body"/> 
                <tiles:insertAttribute name="footer" ignore="true"/>
            </div>
        </div>
    </body>
</html>
</jsp:root>
2020-12-03