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if("D".equals(strBillStatus)) {	
	delFileName = filepath.substring(filepath.lastIndexOf("/")+1,filepath.length());
	// 删除文件
	String strFilePath = strDictionary + "/"+delFileName;
	File file = new File(strFilePath);
	if(file.exists() && file.isFile()) {
		file.delete();
}

if("S".equals(strBillStatus)) {		
	if (bResult) {	
		//上传文件名
		strName = upload.getFileName();
		//文件大小
		long nSize = upload.getFileSize();
		//文件名
		String strOldName = strDictionary + "/" + strName;
		//文件类型
		int nPot = strOldName.indexOf(".", strOldName.length() - 6);
		String strFileType = strOldName.substring(nPot + 1, strOldName.length());
		File file1 = new File( strOldName );   			
		//得到系统时间
		java.util.Date current = new java.util.Date();
		java.text.SimpleDateFormat formatter =  new java.text.SimpleDateFormat("yyMMddHHmmssSSS");
		java.text.SimpleDateFormat formatter1 =  new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		//新文件名=系统时间+原文件类型
		strNewName = formatter.format(current)+"."+strFileType;				
		File newFile = new File(strDictionary + "/" + strNewName);
		//改文件名
		file1.renameTo(newFile);
		filepath = sessionPath + "/" + strNewName;
		filename = strName;
	} //end if
}