五月 12, 2016 3:56:28 下午 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet [jsp] in context with path [/ctcesims] threw exception [An exception occurred processing JSP page /docUploadConvertAction.jsp at line 21

18:     // 采用cos缺省的命名策略，重名后加1,2,3...如果不加dfp重名将覆盖
19:     DefaultFileRenamePolicy dfp = new DefaultFileRenamePolicy();
20:     // response的编码为"UTF-8",同时采用缺省的文件名冲突解决策略,实现上传,如果不加dfp重名将覆盖
21:     MultipartRequest multi = new MultipartRequest(request, saveDirectory, maxPostSize, "UTF-8", dfp);
22:     // MultipartRequest multi = new MultipartRequest(request, saveDirectory,
23:     // maxPostSize,"UTF-8");
24:     // 输出反馈信息

需要导入的jar包是cos.jar，导过了

Servlet.service() for servlet [jsp] in context with path [/ctcesims] threw exception [An exception occurred processing JSP page /docUploadConvertAction.jsp at line 21