导出文件格式可选

protected void handExportDateAction(ActionEvent event) {// ShowDialog.showConfirmDialog(FXRobotHelper.getStages().get(0),// "是否导出数据到txt？", "信息");FileChooser fileChooser = new FileChooser();FileChooser.ExtensionFilter extFilter = new FileChooser.ExtensionFilter("TXT files (*.txt)", "*.txt");fileChooser.getExtensionFilters().add(extFilter);Stage s = new Stage();File file = fileChooser.showSaveDialog(s);if (file == null)return;if(file.exists()){//文件已存在，则删除覆盖文件
            file.delete();}String exportFilePath = file.getAbsolutePath();System.out.println("导出文件的路径" + exportFilePath);ObservableList<AmazonProductModel> list = tProduceView.getItems();StringBuilder sBuilder=new StringBuilder();if (list.size() > 0) {for (AmazonProductModel model : list) {sBuilder.append(model.getPid()+","+model.getPrice()+","+model.getName()+"\r\n");}}FileWriteUtil.WriteDocument(exportFilePath, sBuilder.toString());ShowDialog.showMessageDialog(FXRobotHelper.getStages().get(0), "导出成功!保存路径:\n"+exportFilePath, "提示");}