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xuri
xuri

Posted on • Updated on

Go library for reading and writing Microsoft Excelโ„ข (XLSX) files

Excelize logo

Excelize is a library written in pure Go providing a set of functions that allow you to write to and read from XLAM / XLSM / XLSX / XLTM / XLTX files. Supports reading and writing spreadsheet documents generated by Microsoft Excelโ„ข 2007 and later. Supports complex components by high compatibility, and provided streaming API for generating or reading data from a worksheet with huge amounts of data.

GitHub: github.com/xuri/excelize

Basic Usage

Installation

go get github.com/xuri/excelize/v2
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Create XLSX file

Here is a minimal example usage that will create XLSX file.

package main

import "github.com/xuri/excelize/v2"

func main() {
    f := excelize.NewFile()
    // Create a new sheet.
    index := f.NewSheet("Sheet2")
    // Set value of a cell.
    f.SetCellValue("Sheet2", "A2", "Hello world.")
    f.SetCellValue("Sheet1", "B2", 100)
    // Set active sheet of the workbook.
    f.SetActiveSheet(index)
    // Save xlsx file by the given path.
    if err := f.SaveAs("Book1.xlsx"); err != nil {
        println(err.Error())
    }
}
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Reading XLSX file

The following constitutes the bare to read a XLSX document.

package main

import (
    "fmt"

    "github.com/xuri/excelize/v2"
)

func main() {
    f, err := excelize.OpenFile("Book1.xlsx")
    if err != nil {
        fmt.Println(err)
        return
    }
    defer func() {
        // Close the spreadsheet.
        if err := f.Close(); err != nil {
            fmt.Println(err)
        }
    }()
    // Get value from cell by given worksheet name and axis.
    cell, err := f.GetCellValue("Sheet1", "B2")
    if err != nil {
        fmt.Println(err)
        return
    }
    fmt.Println(cell)
    // Get all the rows in the Sheet1.
    rows, err := f.GetRows("Sheet1")
    if err != nil {
        fmt.Println(err)
        return
    }
    for _, row := range rows {
        for _, colCell := range row {
            fmt.Print(colCell, "\t")
        }
        fmt.Println()
    }
}
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Add chart to XLSX file

With Excelize chart generation and management is as easy as a few lines of code. You can build charts based off data in your worksheet or generate charts without any data in your worksheet at all.

Add chart to Excel document

package main

import (
    "fmt"

    "github.com/xuri/excelize/v2"
)

func main() {
    categories := map[string]string{
        "A2": "Small", "A3": "Normal", "A4": "Large",
        "B1": "Apple", "C1": "Orange", "D1": "Pear"}
    values := map[string]int{
        "B2": 2, "C2": 3, "D2": 3, "B3": 5, "C3": 2, "D3": 4, "B4": 6, "C4": 7, "D4": 8}
    f := excelize.NewFile()
    for k, v := range categories {
        f.SetCellValue("Sheet1", k, v)
    }
    for k, v := range values {
        f.SetCellValue("Sheet1", k, v)
    }
    if err := f.AddChart("Sheet1", "E1", `{
        "type": "col3DClustered",
        "series": [
        {
            "name": "Sheet1!$A$2",
            "categories": "Sheet1!$B$1:$D$1",
            "values": "Sheet1!$B$2:$D$2"
        },
        {
            "name": "Sheet1!$A$3",
            "categories": "Sheet1!$B$1:$D$1",
            "values": "Sheet1!$B$3:$D$3"
        },
        {
            "name": "Sheet1!$A$4",
            "categories": "Sheet1!$B$1:$D$1",
            "values": "Sheet1!$B$4:$D$4"
        }],
        "title":
        {
            "name": "Fruit 3D Clustered Column Chart"
        }
    }`); err != nil {
        fmt.Println(err)
        return
    }
    // Save spreadsheet by the given path.
    if err := f.SaveAs("Book1.xlsx"); err != nil {
        fmt.Println(err)
    }
}
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Add picture to XLSX file

package main

import (
    "fmt"
    _ "image/gif"
    _ "image/jpeg"
    _ "image/png"

    "github.com/xuri/excelize/v2"
)

func main() {
    f, err := excelize.OpenFile("Book1.xlsx")
    if err != nil {
        fmt.Println(err)
        return
    }
    defer func() {
        // Close the spreadsheet.
        if err := f.Close(); err != nil {
            fmt.Println(err)
        }
    }()
    // Insert a picture.
    if err := f.AddPicture("Sheet1", "A2", "image.png", ""); err != nil {
        fmt.Println(err)
    }
    // Insert a picture to worksheet with scaling.
    if err := f.AddPicture("Sheet1", "D2", "image.jpg",
        `{"x_scale": 0.5, "y_scale": 0.5}`); err != nil {
        fmt.Println(err)
    }
    // Insert a picture offset in the cell with printing support.
    if err := f.AddPicture("Sheet1", "H2", "image.gif", `{
        "x_offset": 15,
        "y_offset": 10,
        "print_obj": true,
        "lock_aspect_ratio": false,
        "locked": false
    }`); err != nil {
        fmt.Println(err)
    }
    // Save the spreadsheet with the origin path.
    if err = f.Save(); err != nil {
        fmt.Println(err)
    }
}
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