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带ajax的struts1.3

[英]struts1.3 with ajax

 原文  2012-02-17 12:08:27  5   2    java/ ajax/ jsp/ struts

问题描述

i am new in ajax, i am trying to make a struts application which use ajax to populate combo box on the change event of other combo box. 我是ajax的新手，我正在尝试制作一个struts应用程序，该应用程序使用ajax在其他组合框的change事件上填充组合框。 i find a code on internet and i try to make run it but i got error lick 我在互联网上找到一个代码 ，我尝试使其运行，但是我遇到了错误提示 

`javax.servlet.jsp.JspException: Cannot find bean under name org.apache.struts.taglib.html.BEAN
    at org.apache.struts.taglib.html.SelectTag.calculateMatchValues(SelectTag.java:224)
    at org.apache.struts.taglib.html.SelectTag.doStartTag(SelectTag.java:177)
    at org.apache.jsp.showCharacters_jsp._jspService(showCharacters_jsp.java:92)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:386)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)
    at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)
    at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374)
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)
    at org.apache.struts.chain.commands.servlet.PerformForward.handleAsForward(PerformForward.java:113)
    at org.apache.struts.chain.commands.servlet.PerformForward.perform(PerformForward.java:96)
    at org.apache.struts.chain.commands.AbstractPerformForward.execute(AbstractPerformForward.java:54)
    at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
    at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
    at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:305)
    at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
    at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
    at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
    at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
    at java.lang.Thread.run(Unknown Source)
Feb 17, 2012 5:27:54 PM org.apache.struts.chain.commands.AbstractExceptionHandler execute
WARNING: Unhandled exception
org.apache.jasper.JasperException: An exception occurred processing JSP page /showCharacters.jsp at line 25

22:                 <%} %>
23:           </logic:present>
24:     </html:select> --%>
25:     <html:select property="TVShowSelect">
26:           <logic:present name="characters">
27:                 <%ArrayList<String> ch = (ArrayList<String>)  request.getSession().getAttribute("characters");
28:                 


Stacktrace:
    at org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:519)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:410)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)
    at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)
    at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374)
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)
    at org.apache.struts.chain.commands.servlet.PerformForward.handleAsForward(PerformForward.java:113)
    at org.apache.struts.chain.commands.servlet.PerformForward.perform(PerformForward.java:96)
    at org.apache.struts.chain.commands.AbstractPerformForward.execute(AbstractPerformForward.java:54)
    at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
    at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
    at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:305)
    at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
    at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
    at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
    at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
    at java.lang.Thread.run(Unknown Source)
Caused by: javax.servlet.ServletException: javax.servlet.jsp.JspException: Cannot find bean under name org.apache.struts.taglib.html.BEAN
    at org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:865)
    at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:794)
    at org.apache.jsp.showCharacters_jsp._jspService(showCharacters_jsp.java:171)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:386)
    ... 33 more
Caused by: javax.servlet.jsp.JspException: Cannot find bean under name org.apache.struts.taglib.html.BEAN
    at org.apache.struts.taglib.html.SelectTag.calculateMatchValues(SelectTag.java:224)
    at org.apache.struts.taglib.html.SelectTag.doStartTag(SelectTag.java:177)
    at org.apache.jsp.showCharacters_jsp._jspService(showCharacters_jsp.java:92)
    ... 36 more
Feb 17, 2012 5:27:54 PM org.apache.struts.chain.commands.ExceptionCatcher postprocess
WARNING: Exception from exceptionCommand 'servlet-exception'
org.apache.jasper.JasperException: An exception occurred processing JSP page /showCharacters.jsp at line 25

22:                 <%} %>
23:           </logic:present>
24:     </html:select> --%>
25:     <html:select property="TVShowSelect">
26:           <logic:present name="characters">
27:                 <%ArrayList<String> ch = (ArrayList<String>)  request.getSession().getAttribute("characters");
28:                 


Stacktrace:
    at org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:519)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:410)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)
    at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)
    at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374)
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)
    at org.apache.struts.chain.commands.servlet.PerformForward.handleAsForward(PerformForward.java:113)
    at org.apache.struts.chain.commands.servlet.PerformForward.perform(PerformForward.java:96)
    at org.apache.struts.chain.commands.AbstractPerformForward.execute(AbstractPerformForward.java:54)
    at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
    at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
    at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:305)
    at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
    at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
    at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
    at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
    at java.lang.Thread.run(Unknown Source)
Caused by: javax.servlet.ServletException: javax.servlet.jsp.JspException: Cannot find bean under name org.apache.struts.taglib.html.BEAN
    at org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:865)
    at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:794)
    at org.apache.jsp.showCharacters_jsp._jspService(showCharacters_jsp.java:171)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:386)
    ... 33 more
Caused by: javax.servlet.jsp.JspException: Cannot find bean under name org.apache.struts.taglib.html.BEAN
    at org.apache.struts.taglib.html.SelectTag.calculateMatchValues(SelectTag.java:224)
    at org.apache.struts.taglib.html.SelectTag.doStartTag(SelectTag.java:177)
    at org.apache.jsp.showCharacters_jsp._jspService(showCharacters_jsp.java:92)
    ... 36 more
Feb 17, 2012 5:27:54 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet action threw exception
javax.servlet.jsp.JspException: Cannot find bean under name org.apache.struts.taglib.html.BEAN
    at org.apache.struts.taglib.html.SelectTag.calculateMatchValues(SelectTag.java:224)
    at org.apache.struts.taglib.html.SelectTag.doStartTag(SelectTag.java:177)
    at org.apache.jsp.showCharacters_jsp._jspService(showCharacters_jsp.java:92)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:386)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)
    at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)
    at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374)
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)
    at org.apache.struts.chain.commands.servlet.PerformForward.handleAsForward(PerformForward.java:113)
    at org.apache.struts.chain.commands.servlet.PerformForward.perform(PerformForward.java:96)
    at org.apache.struts.chain.commands.AbstractPerformForward.execute(AbstractPerformForward.java:54)
    at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
    at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
    at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:305)
    at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
    at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
    at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
    at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
    at java.lang.Thread.run(Unknown Source)

can any one help me 谁能帮我

2 个解决方案

解决方案1
 0  2012-05-04 11:41:20

Take the form bean to store the data when the onchange event happened. 当onchange事件发生时，使用form bean来存储数据。 Because of that only you will be getting this Exception. 因此，只有您会收到此Exception。 and action class should return null. 并且操作类应返回null。 and the combo box will be dynamically generated by div tag in the jsp page. 组合框将由jsp页面中的div标签动态生成。

解决方案2
 0  2014-01-15 16:30:29

Just add the tag library : 只需添加标签库： 

<%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean" %>
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html" %>

etc and add the jar files : 等等，然后添加jar文件： 

struts-taglib-1.3.10

etc 等等

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