下载Excel出错

jasonpe

下载excel出错 之前模型编译可以下载   现在不行报这样的错
Caused by: javax.servlet.ServletException: excel导出下载文件失败！
        at Download.execute(Download.java:94)
        at com.justep.ui.JavaServer.runJava(Unknown Source)
        at com.justep.ui.JavaServer.doJ(Unknown Source)
        at com.justep.ui.JavaServer.service(Native Method)
        ... 14 more
Caused by: java.lang.RuntimeException: java.lang.RuntimeException: 调用Action出错, java.lang.RuntimeException: 获取文件失败！
        at DownloadStreamCallback.execute(Download.java:46)
        at com.justep.biz.client.ActionEngine.invokeActions(Unknown Source)
        at com.justep.biz.client.ActionEngine.invokeActions(Unknown Source)
        at Download.execute(Download.java:92)
        ... 17 more
Caused by: java.lang.RuntimeException: 调用Action出错, java.lang.RuntimeException: 获取文件失败！
        at DownloadStreamCallback.execute(Download.java:43)
        ... 20 more
2014-12-3 13:11:16 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet main-servlet threw exception
java.lang.RuntimeException: 调用Action出错, java.lang.RuntimeException: 获取文件失败！

jishuang

平台提供的/UI/demo/components/process/excel/excel.w中的导出excel文件也报错？