根据复杂excel文档模板导出excel表格

1，首先导入阿里的jar包

2，将模板excel文件放在对应目录下，取文件时根据存放路径取

①模板内容

②模板存放位置

3，编写util类

public class TemplateExcelUtils{
        /**
         * 导出文件时为Writer生成OutputStream.
         * @param fileName 文件名
         * @param response response
         * @return ""
         */
        public static OutputStream getOutputStream(String fileName, HttpServletResponse response) throws Exception {
            try {
                fileName = URLEncoder.encode(fileName, "UTF-8");
                response.setContentType("application/vnd.ms-excel");
                response.setCharacterEncoding("utf8");
                response.setHeader("Content-Disposition", "attachment; filename=" + fileName);
                response.setHeader("Pragma", "public");
                response.setHeader("Cache-Control", "no-store");
                response.addHeader("Cache-Control", "max-age=0");
                return response.getOutputStream();
            } catch (IOException e) {
                throw new Exception("导出excel表格失败!", e);
            }
        }
}

4，编写测试代码

@RestController
@RequestMapping("/user")
public class ExcelTest {

    @GetMapping("/downExcelTest")
    public void downExcel2(HttpServletResponse response) {
        InputStream is= null;
        Map<String, Object> map = new HashMap<>();
        map.put("nowDay", "2023-06-13");
        map.put("customerName", "测试客户名");
        map.put("customerNo", "测试客户编号");
        map.put("solutiomTime", "2023-06-09");
        map.put("amount", "2000");
        map.put("userName", "张三");
        map.put("taskNo", "202306130001");
        map.put("taskNo", "1001");
        map.put("processingTime", "2023-06-09");
        map.put("longAmount", "500");
        map.put("shortAmount", "300");
        map.put("accountNo", "CN20230613");
        // 取出模板
        try        {
            is = ResourceUtil.getStream("templates/ErrorAccInfo.xlsx");
            //定义最终导出的文件名称
            String fileName = "测试文档.xlsx";
            ExcelWriter excelWriter = EasyExcel.write(TemplateExcelUtils.getOutputStream(fileName, response)).withTemplate(is).excelType(ExcelTypeEnum.XLSX).build();
            WriteSheet writeSheet = EasyExcel.writerSheet().build();
            // 这个传进去的 map 就是非表格数据
            excelWriter.fill(map, writeSheet);
            excelWriter.finish();
        } catch(Exception e) {
            e.printStackTrace();
        } finally {
            if (is != null) {
                try {
                    is.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }

 5，测试。启动项目后舒服对应地址

6,测试结果