No FileItemFactory has been set

错误描述： No FileItemFactory has been set代码：//创建上传文件工厂DiskFileItemFactory factory = new DiskFileItemFactory();//设置内存中缓存区的大小，默认10Kfactory.setSizeThreshold(100*1024);//设置临时和真实目录String tempPath= this.getServletContext().getRealPath("/temp");String uploadPath= this.getServletContext().getRealPath("/upload");factory.setRepository(new File(tempPath));//创建上传文件对象ServletFileUpload upload = new ServletFileUpload();解决办法：需要把factory 传到  ServletFileUpload 中 即 ServletFileUpload upload = new ServletFileUpload(factory );