How is the file selected in the SAP attachment UI transferred to the ABAP server

This article mainly explains "how the files selected in the SAP attachment UI are transferred to the ABAP server", interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn how the files selected in the SAP attachment UI are transferred to the ABAP server.

Using Chrome debug attachment upload page: after selecting a file from local laptop, the breakpoint triggers:

The frontend gets the file name selected by user:

After clicking Attach button, trigger the event handler of Application server:

As can be observed from Chrome network tab, UI sends a http post to Application server:

All form parts of LOOP:

Remove file name from the corresponding form part, file type:

And the actual contents of the file (the contents of the form part cannot be observed in the network of Chrome due to security)

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