SpringBoot – Upload/Download MultipartFile to FileSystem – Bootstrap 4 + JQuery Ajax

In the tutorial, we guide how to build a SpringBoot web-application to Upload/Download MultipartFile to FileSystem using Bootstrap 4 & JQuery Ajax.

Technologies

  • Java 8
  • Spring Tool Suite: Version 3.9.4.RELEASE
  • Spring Boot: 2.0.2.RELEASE
  • Bootstrap 4
  • JQuery Ajax

Goal

We create a SpringBoot project as below:

SpringBoot-Upload-Download-MultipartFile-2-FileSystem-using-Bootstrap-4-JQuery-Ajax-project-structure

-> Upload/Download Form:

SpringBoot-Upload-Download-MultipartFile-2-FileSystem-using-Bootstrap-4-JQuery-Ajax-download-files

Practice

We create a SpringBoot project with below dependencies:

FrontEnd
Upload Multipart-Form

Ajax Post/Get MultipartFile

– JQuery Ajax to Post MultipartFile is implemented in ‘\src\main\resources\static\js\postrequest.js’ file:

– JQuery Ajax to Retrieve/Download MultipartFile is implemented in ‘\src\main\resources\static\js\getrequest.js’ file:

BackEnd
File Storage

– Create interface FileStorage.java file:

– Implement above interface by FileStorageImpl.java:

Index Controller

– Create IndexController.java to server uploadfile.html view:

Upload/Download RestAPIs

– Implement upload-file RestAPI in UploadFileController.java file:

– Implement download/retrieve files RestAPIs in DownloadFileController.java file:

Run & Check Results

Run the SpringBoot project, then makes upload/download requests ->

Upload Files

SpringBoot-Upload-Download-MultipartFile-2-FileSystem-using-Bootstrap-4-JQuery-Ajax-upload-a-file

-> Stored files:

SpringBoot-Upload-Download-MultipartFile-2-FileSystem-using-Bootstrap-4-JQuery-Ajax-upload-files-to-filestorage

Retrieve Files

SpringBoot-Upload-Download-MultipartFile-2-FileSystem-using-Bootstrap-4-JQuery-Ajax-list-all-files

-> Browser Network logs:

SpringBoot-Upload-Download-MultipartFile-2-FileSystem-using-Bootstrap-4-JQuery-Ajax-list-all-files-network-logs

Download Files

SpringBoot-Upload-Download-MultipartFile-2-FileSystem-using-Bootstrap-4-JQuery-Ajax-download-files

-> Browser Network logs:

SpringBoot-Upload-Download-MultipartFile-2-FileSystem-using-Bootstrap-4-JQuery-Ajax-download-files-network-logs

SourceCode

SpringBootUploadDownloadMultipartFile

By grokonez | July 15, 2017.

Last updated on June 4, 2018.



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