ava将list中的数据生成excel表格并返回excel表格列名为参数名

好的，这个问题属于技术问题。可以使用Java提供的Apache POI库来操作Excel文件，具体实现可以参考如下代码：

public void createExcel(List<Map<String, Object>> dataList, String[] columnNames, HttpServletResponse response) throws Exception {
    // 创建Excel文件
    XSSFWorkbook workbook = new XSSFWorkbook();
    XSSFSheet sheet = workbook.createSheet();

    // 设置列名
    XSSFRow row = sheet.createRow(0);
    for (int i = 0; i < columnNames.length; i++) {
        XSSFCell cell = row.createCell(i);
        cell.setCellValue(columnNames[i]);
    }

    // 将数据填充至Excel表格中
    for (int i = 0; i < dataList.size(); i++) {
        Map<String, Object> dataMap = dataList.get(i);
        row = sheet.createRow(i + 1);
        for (int j = 0; j < columnNames.length; j++) {
            Object value = dataMap.get(columnNames[j]);
            if (value == null) {
                continue;
            }
            XSSFCell cell = row.createCell(j);
            cell.setCellValue(String.valueOf(value));
        }
    }

    // 输出Excel文件
    response.setCharacterEncoding("utf-8");
    response.setContentType("application/vnd.ms-excel;charset=utf-8");
    response.setHeader("Content-Disposition", "attachment;filename=export.xlsx");
    OutputStream out = response.getOutputStream();
    workbook.write(out);
    out.flush();
    out.close();
}