springmvc下载excel文件，通过get方式传少量参数

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/daijiguo/article/details/83301440

Html

<el-button @click=downloadExcel>数据导出</el-button>
export default {
	methods:{
		downloadExcel(){
			window.location.href='/api/visitors/downloadExcel'
		}
	}
}

Java

@RequestMapping(value = "UserExcelDownloads", method = RequestMethod.GET)
    public void downloadAllClassmate(HttpServletResponse response) throws IOException {
        HSSFWorkbook workbook = new HSSFWorkbook();
        
        HSSFSheet sheet = workbook.createSheet("信息表");
        
        String fileName = "abc.xls";//设置要导出的文件的名字
        
 		String[] headers = { "学号", "姓名", "身份类型", "登录密码"};//headers表示excel表中第一行的表头
        
        HSSFRow row = sheet.createRow(0);//在excel表中添加表头

        for(int i=0;i<headers.length;i++){
            HSSFCell cell = row.createCell(i);
            HSSFRichTextString text = new HSSFRichTextString(headers[i]);
            cell.setCellValue(text);
        }
        
        response.setContentType("application/octet-stream");
        response.setHeader("Content-disposition", "attachment;filename=" + fileName);
        response.flushBuffer();
        workbook.write(response.getOutputStream());
    }

创建过程 workbook => sheet => row => cell，此方式如果需要传参，可以/api/visitors/downloadExcel'?a=1&b=2的方式传少量参数，因为get方式不支持大量数据传参。