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Create a file download link using Spring Boot and Thymeleaf

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.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty height:90px;width:728px;box-sizing:border-box;

0

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I have a download link on my page but it doesn't work and get error.
Here's my code.

request mapping :

@RequestMapping(value="/id/download", method=RequestMethod.GET)
public ResponseEntity<Resource> downloadFile(@PathVariable Integer id) 
 // Load file from database
 MsFile file = null;
 MsAnnouncement ano = null;
 try 
 ano = anRepo.findById(id).get();
 file = fileService.getFile(ano.getFileId().getId());
 catch (Exception e) 
 // TODO Auto-generated catch block
 e.printStackTrace();
 

 return ResponseEntity.ok()
 .contentType(MediaType.parseMediaType(file.getFileType()))
 .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename="" + file.getAttachedFileName() + """)
 .body(new ByteArrayResource(file.getAttachedFile()));

html :

 <a class=" mx-1 btn btn-secondary" th:href="@/admin/announcement/id/download/(id=$announcement.id)" 
 >Download</a> 

I just need the file downloaded once when i click the button. But when i try with this code the file cannot be downloaded and get error at the return ResponseEntity.ok():

error following :

AnnouncementController.downloadFile(AnnouncementController.java:130) ~[classes/:na]

At java:130 :

 return ResponseEntity.ok()
 .contentType(MediaType.parseMediaType(file.getFileType()))
 .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename="" + file.getAttachedFileName() + """)
 .body(new ByteArrayResource(file.getAttachedFile()));
}

java html spring-mvc thymeleaf

share|improve this question

edited Mar 25 at 4:28

deni maya

asked Mar 25 at 4:10

deni mayadeni maya

94

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Please read minimal reproducible example and enhance your question accordingly. What error do you get?
  
  – GhostCat
  Mar 25 at 4:15
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  is the href correct on the html side?? Also are you able to download file via curl or postman.
  
  – Grinish Nepal
  Mar 25 at 4:22
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  <a class=" mx-1 btn btn-secondary" th:href="@/admin/announcement/id/dowload/(id=$announcement.id)" The spelling of download is wrong.
  
  – Vinay Avasthi
  Mar 25 at 4:24
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  yes, i found it hhehehe just about the spelling :D
  
  – deni maya
  Mar 25 at 4:30
  

  
  
  
  

add a comment | 

0

0

I have a download link on my page but it doesn't work and get error.
Here's my code.

request mapping :

@RequestMapping(value="/id/download", method=RequestMethod.GET)
public ResponseEntity<Resource> downloadFile(@PathVariable Integer id) 
 // Load file from database
 MsFile file = null;
 MsAnnouncement ano = null;
 try 
 ano = anRepo.findById(id).get();
 file = fileService.getFile(ano.getFileId().getId());
 catch (Exception e) 
 // TODO Auto-generated catch block
 e.printStackTrace();
 

 return ResponseEntity.ok()
 .contentType(MediaType.parseMediaType(file.getFileType()))
 .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename="" + file.getAttachedFileName() + """)
 .body(new ByteArrayResource(file.getAttachedFile()));

html :

 <a class=" mx-1 btn btn-secondary" th:href="@/admin/announcement/id/download/(id=$announcement.id)" 
 >Download</a> 

I just need the file downloaded once when i click the button. But when i try with this code the file cannot be downloaded and get error at the return ResponseEntity.ok():

error following :

AnnouncementController.downloadFile(AnnouncementController.java:130) ~[classes/:na]

At java:130 :

 return ResponseEntity.ok()
 .contentType(MediaType.parseMediaType(file.getFileType()))
 .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename="" + file.getAttachedFileName() + """)
 .body(new ByteArrayResource(file.getAttachedFile()));
}

java html spring-mvc thymeleaf

share|improve this question

edited Mar 25 at 4:28

deni maya

asked Mar 25 at 4:10

deni mayadeni maya

94

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Please read minimal reproducible example and enhance your question accordingly. What error do you get?
  
  – GhostCat
  Mar 25 at 4:15
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  is the href correct on the html side?? Also are you able to download file via curl or postman.
  
  – Grinish Nepal
  Mar 25 at 4:22
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  <a class=" mx-1 btn btn-secondary" th:href="@/admin/announcement/id/dowload/(id=$announcement.id)" The spelling of download is wrong.
  
  – Vinay Avasthi
  Mar 25 at 4:24
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  yes, i found it hhehehe just about the spelling :D
  
  – deni maya
  Mar 25 at 4:30
  

  
  
  
  

add a comment | 

I have a download link on my page but it doesn't work and get error.
Here's my code.

request mapping :

@RequestMapping(value="/id/download", method=RequestMethod.GET)
public ResponseEntity<Resource> downloadFile(@PathVariable Integer id) 
 // Load file from database
 MsFile file = null;
 MsAnnouncement ano = null;
 try 
 ano = anRepo.findById(id).get();
 file = fileService.getFile(ano.getFileId().getId());
 catch (Exception e) 
 // TODO Auto-generated catch block
 e.printStackTrace();
 

 return ResponseEntity.ok()
 .contentType(MediaType.parseMediaType(file.getFileType()))
 .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename="" + file.getAttachedFileName() + """)
 .body(new ByteArrayResource(file.getAttachedFile()));

html :

 <a class=" mx-1 btn btn-secondary" th:href="@/admin/announcement/id/download/(id=$announcement.id)" 
 >Download</a> 

I just need the file downloaded once when i click the button. But when i try with this code the file cannot be downloaded and get error at the return ResponseEntity.ok():

error following :

AnnouncementController.downloadFile(AnnouncementController.java:130) ~[classes/:na]

At java:130 :

 return ResponseEntity.ok()
 .contentType(MediaType.parseMediaType(file.getFileType()))
 .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename="" + file.getAttachedFileName() + """)
 .body(new ByteArrayResource(file.getAttachedFile()));
}

java html spring-mvc thymeleaf

share|improve this question

edited Mar 25 at 4:28

deni maya

asked Mar 25 at 4:10

deni mayadeni maya

94

@RequestMapping(value="/id/download", method=RequestMethod.GET)
public ResponseEntity<Resource> downloadFile(@PathVariable Integer id) 
 // Load file from database
 MsFile file = null;
 MsAnnouncement ano = null;
 try 
 ano = anRepo.findById(id).get();
 file = fileService.getFile(ano.getFileId().getId());
 catch (Exception e) 
 // TODO Auto-generated catch block
 e.printStackTrace();
 

 return ResponseEntity.ok()
 .contentType(MediaType.parseMediaType(file.getFileType()))
 .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename="" + file.getAttachedFileName() + """)
 .body(new ByteArrayResource(file.getAttachedFile()));

 <a class=" mx-1 btn btn-secondary" th:href="@/admin/announcement/id/download/(id=$announcement.id)" 
 >Download</a> 

AnnouncementController.downloadFile(AnnouncementController.java:130) ~[classes/:na]

 return ResponseEntity.ok()
 .contentType(MediaType.parseMediaType(file.getFileType()))
 .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename="" + file.getAttachedFileName() + """)
 .body(new ByteArrayResource(file.getAttachedFile()));
}

share|improve this question

edited Mar 25 at 4:28

deni maya

asked Mar 25 at 4:10

deni mayadeni maya

94

share|improve this question

edited Mar 25 at 4:28

deni maya

asked Mar 25 at 4:10

deni mayadeni maya

94

asked Mar 25 at 4:10

deni mayadeni maya

94

asked Mar 25 at 4:10

deni mayadeni maya

94