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Excelize is a library written in pure
Go
that provides a set of functions that allow you to read and write from XLSX files generated by Microsoft Excel™ 2007 and later. It supports saving a file without losing original charts of XLSX. This library is only available in version 1.10 or later of Go. The full API docs can be accessed using Go’s built-in documentation tool or online at
godoc.org
and
docs referenc
.
GitHub: https://github.com/360EntSecGroup-Skylar/exceliz.
Document: https://xuri.me/excelize/.
Installation
Go
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go get github.com/360EntSecGroup-Skylar/excelize
Create an XLSX File
Here is a minimal example that will create an XLSX file:
Go
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package main
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import "github.com/360EntSecGroup-Skylar/excelize"
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func main() {
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f := excelize.NewFile()
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// Create a new sheet.
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index := f.NewSheet("Sheet2")
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// Set value of a cell.
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f.SetCellValue("Sheet2", "A2", "Hello world.")
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f.SetCellValue("Sheet1", "B2", 100)
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// Set active sheet of the workbook.
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f.SetActiveSheet(index)
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// Save xlsx file by the given path.
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if err := f.SaveAs("Book1.xlsx"); err != nil {
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println(err.Error())
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}
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}
You may also like:
Golang Tutorial: Learn Golang by Examples.
Reading an XLSX File
The following constitutes the minimum implementation required to read an XLSX file:
Go
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package main
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import "github.com/360EntSecGroup-Skylar/excelize"
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func main() {
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f, err := excelize.OpenFile("Book1.xlsx")
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if err != nil {
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println(err.Error())
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return
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}
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// Get value from cell by given worksheet name and axis.
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cell, err := f.GetCellValue("Sheet1", "B2")
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if err != nil {
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println(err.Error())
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return
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}
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println(cell)
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// Get all the rows in the Sheet1.
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rows, err := f.GetRows("Sheet1")
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for _, row := range rows {
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for _, colCell := range row {
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print(colCell, "\t")
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}
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println()
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}
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}
Add a Chart to an XLSX File
With Excelize, chart generation and management can be implemented with 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 a chart to an Excel document
Go
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package main
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import "github.com/360EntSecGroup-Skylar/excelize"
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func main() {
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categories := map[string]string{"A2": "Small", "A3": "Normal", "A4": "Large", "B1": "Apple", "C1": "Orange", "D1": "Pear"}
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values := map[string]int{"B2": 2, "C2": 3, "D2": 3, "B3": 5, "C3": 2, "D3": 4, "B4": 6, "C4": 7, "D4": 8}
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f := excelize.NewFile()
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for k, v := range categories {
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f.SetCellValue("Sheet1", k, v)
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}
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for k, v := range values {
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f.SetCellValue("Sheet1", k, v)
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}
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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 {
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println(err.Error())
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return
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}
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// Save xlsx file by the given path.
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if err := f.SaveAs("Book1.xlsx"); err != nil {
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println(err.Error())
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}
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}
Add a Picture to an XLSX File
Go
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package main
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import (
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_ "image/gif"
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_ "image/jpeg"
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_ "image/png"
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"github.com/360EntSecGroup-Skylar/excelize"
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)
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func main() {
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f, err := excelize.OpenFile("Book1.xlsx")
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if err != nil {
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println(err.Error())
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return
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}
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// Insert a picture.
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if err := f.AddPicture("Sheet1", "A2", "image.png", ""); err != nil {
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println(err.Error())
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}
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// Insert a picture to worksheet with scaling.
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if err := f.AddPicture("Sheet1", "D2", "image.jpg", `{"x_scale": 0.5, "y_scale": 0.5}`); err != nil {
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println(err.Error())
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}
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// Insert a picture offset in the cell with printing support.
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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 {
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println(err.Error())
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}
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// Save the xlsx file with the origin path.
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if err = f.Save(); err != nil {
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println(err.Error())
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}
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}
Further Reading
- Go Language for Beginners in 16 Parts!
- How to Contribute to Go.
- Go Microservices, Part 1: Building Microservices With Go.
This article was first featured at https://ift.tt/2GtrtWt on January 27, 2020 at 03:53PM by Ri Xu
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