Read and write Excel in Go language

Excelize is a library written in Golang to manipulate Office Excel documents, based on the ECMA-376 Office OpenXML standard. You can use it to read and write XLSX files. Compared with other open source class libraries, Excelize supports writing original documents with pictures (tables), and also supports inserting pictures into Excel, and the chart style will not be lost after saving. 

Project homepage https://github.com/360EntSecGroup-Skylar/excelize

Install  

go get github.com/360EntSecGroup-Skylar/excelize

Create Excel documents

package main

import (
    "fmt"

    "github.com/360EntSecGroup-Skylar/excelize"
)

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

 Read existing documents 

package main

import (
    "fmt"

    "github.com/360EntSecGroup-Skylar/excelize"
)

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

 Insert a chart into an Excel document

package main

import (
    "fmt"

    "github.com/360EntSecGroup-Skylar/excelize"
)

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}
    xlsx := excelize.NewFile()
    for k, v := range categories {
        xlsx.SetCellValue("Sheet1", k, v)
    }
    for k, v := range values {
        xlsx.SetCellValue("Sheet1", k, v)
    }
    xlsx.AddChart("Sheet1", "E1", `{"type":"bar3D","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 Line Chart"}}`)
    // Save xlsx file by the given path.
    err := xlsx.SaveAs("./Workbook.xlsx")
    if err != nil {
        fmt.Println(err)
    }
}

  Insert pictures into Excel documents 

package main

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

    "github.com/360EntSecGroup-Skylar/excelize"
)

func main() {
    xlsx, err := excelize.OpenFile("./Workbook.xlsx")
    if err != nil {
        fmt.Println(err)
        return
    }
    // Insert a picture.
    err = xlsx.AddPicture("Sheet1", "A2", "./image1.png", "")
    if err != nil {
        fmt.Println(err)
    }
    // Insert a picture to worksheet with scaling.
    err = xlsx.AddPicture("Sheet1", "D2", "./image2.jpg", `{"x_scale": 0.5, "y_scale": 0.5}`)
    if err != nil {
        fmt.Println(err)
    }
    // Insert a picture offset in the cell with printing support.
    err = xlsx.AddPicture("Sheet1", "H2", "./image3.gif", `{"x_offset": 15, "y_offset": 10, "print_obj": true, "lock_aspect_ratio": false, "locked": false}`)
    if err != nil {
        fmt.Println(err)
    }
    // Save the xlsx file with the origin path.
    err = xlsx.Save()
    if err != nil {
        fmt.Println(err)
    }
}

There are other functions, which are not listed here. Detailed documentation and later maintenance updates can be obtained from the project's homepage https://github.com/360EntSecGroup-Skylar/excelize