org.apache.jasper.jaspereException:java.lang.NullPointerException:Module'；空'；找不到_Java_Jsp_Tomcat_Struts 1

org.apache.jasper.jaspereException:java.lang.NullPointerException:Module'；空'；找不到

java jsp tomcat

org.apache.jasper.jaspereException:java.lang.NullPointerException:Module'；空'；找不到,java,jsp,tomcat,struts-1,Java,Jsp,Tomcat,Struts 1,我正在使用Struts创建HelloWorld示例并获取异常 index.jsp <%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loos

我正在使用Struts创建HelloWorld示例并获取异常

index.jsp

    <%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html"%>

<html:form>
Name : <html:text property="name"></html:text>
    <html:submit value="Click"></html:submit>

</html:form>

Messages.properties

msg=<font color='red'>  name is required.... </font>

success.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<%= request.getAttribute("result") %>

当我使用Tomcat7时，会出现以下异常

org.apache.jasper.JasperException: An exception occurred processing JSP page /index.jsp at line 6

3: <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
4: <%@ taglib uri="http://struts.apache.org/tags-html" prefix="html"%>
5: 
6: <html:form>
7: Name : <html:text property="name"></html:text>
8:  <html:submit value="Click"></html:submit>
9: 


Stacktrace:
    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:568)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:470)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)



root cause 
java.lang.NullPointerException: Module 'null' not found.
    org.apache.struts.taglib.TagUtils.getModuleConfig(TagUtils.java:755)
    org.apache.struts.taglib.TagUtils.getModuleConfig(TagUtils.java:735)
    org.apache.struts.taglib.html.FormTag.lookup(FormTag.java:818)
    org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:488)
    org.apache.jsp.index_jsp._jspx_meth_html_005fform_005f0(index_jsp.java:115)
    org.apache.jsp.index_jsp._jspService(index_jsp.java:85)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)

org.apache.jasper.JasperException:在第6行处理JSP页面/index.JSP时发生异常
三：
4: 
5: 
6: 
7:姓名：
8:  
9: 
堆栈跟踪：
org.apache.jasper.servlet.JspServletWrapper.handleJspException（JspServletWrapper.java:568）
org.apache.jasper.servlet.JspServletWrapper.service（JspServletWrapper.java:470）
org.apache.jasper.servlet.JspServlet.serviceJspFile（JspServlet.java:390）
org.apache.jasper.servlet.JspServlet.service（JspServlet.java:334）
javaservlet.http.HttpServlet.service（HttpServlet.java:728）
org.apache.tomcat.websocket.server.WsFilter.doFilter（WsFilter.java:51）
根本原因
java.lang.NullPointerException:未找到模块“null”。
org.apache.struts.taglib.TagUtils.getModuleConfig（TagUtils.java:755）
org.apache.struts.taglib.TagUtils.getModuleConfig（TagUtils.java:735）
org.apache.struts.taglib.html.FormTag.lookup（FormTag.java:818）
org.apache.struts.taglib.html.FormTag.doStartTag（FormTag.java:488）
org.apache.jsp.index\u jsp.\u jspx\u meth\u html\u 005fform\u 005f0（index\u jsp.java:115）
org.apache.jsp.index\u jsp.\u jsp服务（index\u jsp.java:85）
org.apache.jasper.runtime.HttpJspBase.service（HttpJspBase.java:70）
javaservlet.http.HttpServlet.service（HttpServlet.java:728）
org.apache.jasper.servlet.JspServletWrapper.service（JspServletWrapper.java:432）
org.apache.jasper.servlet.JspServlet.serviceJspFile（JspServlet.java:390）
org.apache.jasper.servlet.JspServlet.service（JspServlet.java:334）
javaservlet.http.HttpServlet.service（HttpServlet.java:728）
org.apache.tomcat.websocket.server.WsFilter.doFilter（WsFilter.java:51）

看起来jsp引擎没有找到选项卡库。根据您使用的struts版本，您需要定义

<tablib-uri> 
<tablib-location>

或者将struts-tablib.jar正确地放在项目目录中。请参见此链接，jsp引擎似乎没有找到选项卡库。根据您使用的struts版本，您需要定义

<tablib-uri> 
<tablib-location>

或者将struts-tablib.jar正确地放在项目目录中。查看此链接

运气不好，先生。还有别的解决办法吗？不走运，先生。还有其他解决办法吗？

  org.apache.jasper.JasperException: java.lang.NullPointerException: Module 'null' not found.
        org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:502)
        org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:430)
        org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
        org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:723)


root cause 
java.lang.NullPointerException: Module 'null' not found.
    org.apache.struts.taglib.TagUtils.getModuleConfig(TagUtils.java:755)
    org.apache.struts.taglib.TagUtils.getModuleConfig(TagUtils.java:735)
    org.apache.struts.taglib.html.FormTag.lookup(FormTag.java:818)
    org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:488)
    org.apache.jsp.index_jsp._jspx_meth_html_005fform_005f0(index_jsp.java:106)
    org.apache.jsp.index_jsp._jspService(index_jsp.java:76)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:388)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:723)

org.apache.jasper.JasperException: An exception occurred processing JSP page /index.jsp at line 6

3: <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
4: <%@ taglib uri="http://struts.apache.org/tags-html" prefix="html"%>
5: 
6: <html:form>
7: Name : <html:text property="name"></html:text>
8:  <html:submit value="Click"></html:submit>
9: 


Stacktrace:
    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:568)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:470)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)



root cause 
java.lang.NullPointerException: Module 'null' not found.
    org.apache.struts.taglib.TagUtils.getModuleConfig(TagUtils.java:755)
    org.apache.struts.taglib.TagUtils.getModuleConfig(TagUtils.java:735)
    org.apache.struts.taglib.html.FormTag.lookup(FormTag.java:818)
    org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:488)
    org.apache.jsp.index_jsp._jspx_meth_html_005fform_005f0(index_jsp.java:115)
    org.apache.jsp.index_jsp._jspService(index_jsp.java:85)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)

<tablib-uri> 
<tablib-location>