后台接受参数。导出excel文件。

 /**
     * /api/hit/down/excel
     * @return
     */
    @GetMapping("/down/excel")
    public String down_excel(HttpServletRequest request, HttpServletResponse response)throws Exception {
        String webPath=request.getServletContext().getRealPath("/");
        Workbook wb = fillExcelDataWithTemplate(  webPath+"/static/excel_model/draw_operation_list_model.xls");
        ResponseUtil.export(response,wb,"-图纸操作列表.xls");
        return null;
    }
    /**
     *
     * 创建excel
     * @param templateFileUrl
     * @return
     */
    public static Workbook fillExcelDataWithTemplate(  String templateFileUrl) {
        Workbook wb = null ;

        try {
            FileInputStream stream = new  FileInputStream(new File(templateFileUrl));
            wb = WorkbookFactory.create(stream);
            Sheet sheet = wb.getSheetAt(0);
            Row row ;

            //设置标题
            row = sheet.getRow(0);
            row.getCell(0).setCellValue("123123");
            //设置标题
/*
            Integer  rowIndex = 2 ;//行的下标，实际是第3行
            for(JSONObject object    : dateList) {
                row = sheet.createRow(rowIndex);
                object.getString("biaozhun");
                object.getInt("state0");
                object.getInt("state1");
                object.getInt("state2");
                object.getInt("state3");
                row.createCell(0).setCellValue(object.getString("biaozhun"));
                row.createCell(1).setCellValue(object.getInt("state0"));
                row.createCell(2).setCellValue(object.getInt("state1"));
                row.createCell(3).setCellValue(object.getInt("state2"));
                row.createCell(4).setCellValue(object.getInt("state3"));
                rowIndex++;
            }

            */


        } catch ( Exception e) {
            e.printStackTrace();
        }
        return wb;
    }
    
    
    <!--    解析excel poi -->
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml</artifactId>
    <version>3.9</version>
</dependency>
<!--   解析excel poi -->

导出工具类

导出的excel文件。

vue3 前端 代码这样写。

导入其实就是一个上传文件的按钮 和我们之前写的上传头像一样。