java.lang.NoClassDefFoundError：org / apache / poi / ss / usermodel / RichTextString在org.primefaces.component.export.ExporterFactory.getExporterForType [英] java.lang.NoClassDefFoundError: org/apache/poi/ss/usermodel/RichTextString at org.primefaces.component.export.ExporterFactory.getExporterForType

问题描述

我使用了Primefaces在其网页中的相同示例代码：

 < h：commandLink value =Excel > 
< p：dataExporter type =xlstarget =dataTablefileName =boopageOnly =true/> 
< / h：commandLink> 
  

但不行。
在Internet Explorer浏览器中提供以下消息：

网页错误的详细信息消息：意外调用
方法或属性访问。

Mozilla Firefox中没有发生任何事情。

可能发生什么？

解决方案

  javax.servlet.ServletException：org / apache / poi / ss / usermodel / RichTextString 
  

堆栈跟踪。我打赌根本原因是一个 NoClassDefFoundError 或 ClassNotFoundException ？在这种情况下，这只是意味着您忘记安装 Apache POI 。

下载这个Apache POI压缩文件，解压，将 poi-3.8-20120326.jar 放在 / WEB-INF / lib 文件夹并重建/重新部署/重新启动webapp。

I used the same sample code Primefaces has in its web page:

<h:commandLink value="Excel">                     
  <p:dataExporter type="xls" target="dataTable" fileName="boo" pageOnly="true"/>  
</h:commandLink>

But does not work. In Internet Explorer browser gives the following message:

Details of the errors of the web page Message: Unexpected call to method or property access.

Nothing ever happens in Mozilla Firefox.

What might be happening?

解决方案

javax.servlet.ServletException: org/apache/poi/ss/usermodel/RichTextString

Look further down in the stacktrace. I bet that the root cause is either a NoClassDefFoundError or ClassNotFoundException? In that case, this just means that you forgot to install Apache POI.

Download this Apache POI zip file, extract it, put poi-3.8-20120326.jar in /WEB-INF/lib folder and rebuild/redeploy/restart the webapp.

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