upload-handler.go

router.HandleFunc("/import", func(w http.ResponseWriter, r *http.Request) {
		if r.Method != http.MethodPost {
			http.Error(w, "error: invalid method", http.StatusBadRequest)
			return
		}

		edata, err := ioutil.ReadAll(r.Body)
		if err != nil {
			log.Printf("Error reading request body: %v\n", err)
			http.Error(w, "error: reading file", http.StatusInternalServerError)
			return
		}

		efile, err := xlsx.OpenBinary(edata)
		if err != nil {
			log.Printf("Error opening binary: %v\n", err)
			http.Error(w, "error: opening excel file", http.StatusInternalServerError)
			return
		}

		sheet := efile.Sheets[0]
		toJSON(w, sheet.Rows)
	})