How to Upload Files and JSON Data in a Spring MVC Application Using Postman?

Uploading Files and JSON Data in Postman for Spring MVC

Challenge: Integrating file upload and JSON data submission with Postman in a Spring MVC application.

Objective: Configure Postman to handle both file uploads and JSON data transmission.

Solution:

1. Create a POST Request:

   • Specify the request URL to match the uploadFile method.

2. File Upload:

   • In the "Body" section, select "form-data".
   • Click on the dropdown icon next to the "Key" field and choose "File".
   • Upload the desired file.

3. JSON Data Inclusion:

   • Add additional "form-data" fields for any JSON data you wish to send.
   • Set the "Key" to the corresponding parameter name in your controller method (e.g., "name").
   • Enter the desired JSON value in the "Value" field.

4. Handle Session ID:

   • If you need to include a session ID, create a custom Cookie header in Postman.
   • Enter the session ID value in the "Value" field and the session ID in the "Name" field.

Example Postman Configuration:

• URL: http://localhost:8080/uploadFile
• HTTP Method: POST

• Form-Data:

  • Key: file (File Upload)
  • Value: Select file to upload
  • Key: name (JSON Data)
  • Value: { "name": "MyFileName" }

This configuration enables you to upload a file and submit JSON data simultaneously, simulating the expected request handled by your Spring MVC controller.

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