read a spreadsheet (Excel) document by Golang (Go) Excelize

  1. Import the necessary packages: To begin reading a spreadsheet in Go using the Excelize library, you need to import the required packages. In this case, you need to import the "github.com/360EntSecGroup-Skylar/excelize/v2" package to access the Excelize library.

  2. Open the spreadsheet: Once the required package is imported, you can open the Excel spreadsheet using the OpenFile() function provided by the Excelize library. This function takes the file path as an argument and returns a pointer to an Excelize workbook.

  3. Read the sheet names: After opening the spreadsheet, you can retrieve the sheet names using the GetSheetMap() function provided by the Excelize library. This function returns a map of sheet names and their corresponding sheet indices.

  4. Select a sheet: Once you have the sheet names, you can select a specific sheet to read data from using the SetSheet() function provided by the Excelize library. This function takes the sheet name as an argument.

  5. Determine the maximum number of rows and columns: To read data from the selected sheet, you need to determine the maximum number of rows and columns present in the sheet. You can use the GetRows() and GetCols() functions provided by the Excelize library to get the number of rows and columns respectively.

  6. Read cell values: With the maximum number of rows and columns determined, you can now read the values of individual cells in the sheet. The GetCellValue() function provided by the Excelize library allows you to retrieve the value of a specific cell by providing the row and column indices.

  7. Process the data: Once you have retrieved the cell values, you can process the data as per your requirements. You can perform various operations on the data, such as storing it in variables, printing it, or performing calculations.

  8. Close the spreadsheet: After you have finished reading and processing the data, it is essential to close the spreadsheet to release any system resources being used. You can use the Close() function provided by the Excelize library to close the Excel spreadsheet.

That's it! By following these steps, you can successfully read a spreadsheet document using Golang and the Excelize library. Remember to handle any errors that may occur during the process to ensure smooth execution of your program.