java上传工具： com.jspsmart.upload.SmartUpload smartUpload=new com.jspsmart.upload.SmartUpload(); smartUpload.initialize(pageContext); try{ smartUpload.setAllowedFilesList( "xls"); //这里可以限制上传类型 smartUpload.setMaxFileSize(500000); // 限制每个上传文件的最大长度。 boolean isfile=true; smartUp