How to Upload Files and JSON Data with Postman in Spring MVC?

Uploading Files with JSON Data in Postman

Problem:

In Spring MVC, you have a controller method that handles file uploads with the MultipartFile annotation. However, you need to upload a file and session ID using Postman.

Solution:

For file upload:

1. In Postman, select the HTTP method as POST.
2. Go to "Body" > "form-data."
3. Enter the parameter name "file" (or as specified in your code).
4. On the right side of the "Key" field, click the dropdown menu and select "File."
5. A "Select Files" button will appear in the "Value" field. Click it and select the file you want to upload.

For JSON data:

1. Still in "Body" > "form-data," create another parameter.
2. For the "Key" field, enter the name of the JSON parameter (e.g., "sessionID").
3. On the right side of the "Key" field, select "Text" from the dropdown menu.
4. In the "Value" field, enter the session ID.

Example Body:

--boundary
Content-Disposition: form-data; name="file"; filename="image.jpg"
Content-Type: image/jpeg

[file content]

--boundary
Content-Disposition: form-data; name="sessionID"

your-session-id

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