导入poi的jar包
Java代码：
public String importGradeMessage(MultipartFile file) throws Exception{
InputStream in=null;
try {
List<AClassDO> aClassDOList=new ArrayList<>();
//得到上传的文件,转换成输入流
in = file.getInputStream();
//得到Excel
Workbook readWb = null;
//得到sheet
Sheet readSheet =null; //判断导入Excel的格式
if(file.getContentType().equals("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet")){
readWb = new XSSFWorkbook(in);
readSheet=readWb.getSheetAt(0);
} else {
readWb = new HSSFWorkbook(in);
readSheet=readWb.getSheetAt(0);
}
for (Row r : readSheet) {
//第一行不是数据不需要添加到teacher中
if (r.getRowNum() < 1) {
continue;
}
//实例化AGradeDO对象
AClassDO aClassDO = new AClassDO();
/...操作数据../
} //批量插入数据
batchInsert(aClassDOList,userAccount);
return "插入数据成功！";
} catch (Exception e) {
e.printStackTrace();
}finally {
if (in!=null)
in.close();
}
return "其他异常导致上传失败!";
}html页面
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<form id="form" action="提交路径" method="post">
<input type="file" id="file" name="file" value="Excel表格">
<input type="submit" id="submit" value="上传Excel表格">
</form>
</body>
</html>