How to modify Excel files using Go language

Go language is a programming language that has become very popular in recent years. Its features such as ease of learning, fast execution speed, and high concurrency make it the first choice for many technology enthusiasts. In this article, we will explore how to modify Excel files using Go language.

Excel is a spreadsheet software widely used in business and data processing. Data can be added, edited, deleted, formatted and calculated using Excel. When the amount of data is large, programming languages ​​are generally used to batch process Excel files. Go language is an efficient and easy-to-use programming language, so it is wise to choose it to process Excel files.

First, we need to install an Excel operation library in Go language. It is recommended to use the Excelize library here. Excelize is an open source Go language library that provides APIs for reading, writing and operating Excel files, and can easily complete the reading and writing operations of Excel files.

After installing Excelize, we can start creating Excel files and modify them. The following code demonstrates how to create an Excel file and add data to it:

package main

import (
    "fmt"

    "github.com/360EntSecGroup-Skylar/excelize/v2"
)

func main() {
    // 创建新的Excel文件
    f := excelize.NewFile()

    // 在第一个工作表中添加数据
    f.SetCellValue("Sheet1", "A1", "姓名")
    f.SetCellValue("Sheet1", "B1", "年龄")
    f.SetCellValue("Sheet1", "A2", "张三")
    f.SetCellValue("Sheet1", "B2", 20)

    // 保存Excel文件
    if err := f.SaveAs("test.xlsx"); err != nil {
        fmt.Println(err)
    }
}

Executing the above code will create an Excel file named "test.xlsx" in the current directory and add some data to it . Below, we will introduce how to read and modify Excel files.

package main

import (
    "fmt"

    "github.com/360EntSecGroup-Skylar/excelize/v2"
)

func main() {
    // 打开Excel文件
    f, err := excelize.OpenFile("test.xlsx")
    if err != nil {
        fmt.Println(err)
        return
    }

    // 获取第一个工作表的数据
    rows, err := f.GetRows("Sheet1")
    if err != nil {
        fmt.Println(err)
        return
    }

    // 打印每一行的数据
    for _, row := range rows {
        for _, colCell := range row {
            fmt.Print(colCell, "\t")
        }
        fmt.Println()
    }

    // 修改单元格的值
    f.SetCellValue("Sheet1", "B2", 25)

    // 保存Excel文件
    if err := f.SaveAs("test.xlsx"); err != nil {
        fmt.Println(err)
    }
}

The above code first opens the Excel file named "test.xlsx", obtains the data of the first worksheet, and prints the data of each row. Then, we modified the value of cell B2 and saved the file.

In actual development, we can make various modifications to Excel files as needed, such as adding, deleting and renaming worksheets, setting cell formats, inserting pictures and charts, etc. Excelize provides a rich and easy-to-use API that meets our needs.

In summary, it is very simple to use Go language to process Excel files. Through the Excelize library, we can easily read, write and modify Excel files. If you often need to process large amounts of data, using Go language to process Excel files will be a very good choice.

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