Springboot implements excel file download

1. Project structure (Excel template address)

2. Backend code

Where ClassPathResource is org.springframework.core.io.ClassPathResource;

  
   
   
/**
* Work hours Excel template download
* @param response
*/
@RequestMapping("/workHoursExcel")
public void downloadWorkHourRecordTemplate(HttpServletResponse response) {
try {
Resource resource = new ClassPathResource( "WorkHoursRecordTemplate/Excel batch import work hour template.xlsx" );
File file = resource.getFile();
String filename = resource.getFilename();
InputStream inputStream = new FileInputStream(file);
//Force download does not open
response.setContentType( "application/force-download");
OutputStream out = response.getOutputStream();
//Use URLEncoder to prevent garbled file names or read errors
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. Front end

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