使用cn.hutool.poi.excel.ExcelUtil工具实现excel导出

使用cn.hutool.poi.excel.ExcelUtil工具实现excel导出

使用：pom.xml引入依赖

		<dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
            <version>5.8.10</version>
        </dependency>

具体实现

public static void downloadExcel(List<Map<String, Object>> list, HttpServletResponse response) {
    
    
        ServletOutputStream out = null;
        BigExcelWriter writer = null;
        try {
    
    
            String tempPath = System.getProperty("java.io.tmpdir") + IdUtil.fastSimpleUUID() + ".xlsx";
            File file = new File(tempPath);
            writer = ExcelUtil.getBigWriter(file);
            // 一次性写出内容，使用默认样式，强制输出标题
            writer.write(list, true);
            //response为HttpServletResponse对象
            response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=utf-8");
            //test.xls是弹出下载对话框的文件名，不能为中文，中文请自行编码
            response.setHeader("Content-Disposition", "attachment;filename=file.xlsx");
            response.setCharacterEncoding("utf-8");
            out = response.getOutputStream();
            writer.flush(out, true);
        } catch (Exception e){
    
    
            e.printStackTrace();
        }finally {
    
    
            try{
    
    
                if (out != null){
    
    
                    try {
    
    
                        IoUtil.close(out);
                    }catch (Exception e){
    
    
                        e.printStackTrace();
                    }
                }
                if (writer != null){
    
    
                    try {
    
    
                        writer.close();
                    } catch (Exception e) {
    
    
                        e.printStackTrace();
                    }
                }
            }catch (Exception e){
    
    
                e.printStackTrace();
            }
        }
    }