springboot实现excel文件下载

1.项目结构（Excel模板地址）

2.后端代码

其中ClassPathResource为org.springframework.core.io.ClassPathResource;

  
   
   
/**
* 工时Excel模板下载
* @param response
*/
@RequestMapping("/workHoursExcel")
public void downloadWorkHourRecordTemplate(HttpServletResponse response) {
try {
Resource resource = new ClassPathResource( "WorkHoursRecordTemplate/Excel批量导入工时模板.xlsx");
File file = resource.getFile();
String filename = resource.getFilename();
InputStream inputStream = new FileInputStream(file);
//强制下载不打开
response.setContentType( "application/force-download");
OutputStream out = response.getOutputStream();
//使用URLEncoder来防止文件名乱码或者读取错误
response.setHeader( "Content-Disposition", "attachment; filename=" + URLEncoder.encode(filename, "UTF-8"));
int b = 0;
byte[] buffer = new byte[ 1000000];
while (b != - 1) {
b = inputStream.read(buffer);
if (b != - 1) {
out.write(buffer, 0, b);
}
}
inputStream.close();
out.close();
out.flush();
} catch (IOException e) {
e.printStackTrace();
}
}
  
   
   

3.前端

<a href='/easypoi/workHoursExcel'></a>