Convert JSON file into csv in golang

Question

this following code is working successfully, it converts my json file into a csv file. But I would like to add titles to each of my columns into the csv file. Unfortunately, I can't find out how to do that. If anyone has an idea it would be very helpful.

Regards

package main

import (
    "encoding/json"
    "encoding/csv"
    "fmt"
    "io/ioutil"
    "os"
    "net/http"
    "strconv"
)

type People struct {
    Name string
    Craft string
}

type General struct {
    People []People
    Number int
    Message string
}

func main() {
    // Reading data from JSON File  
    response, err := http.Get("http://api.open-notify.org/astros.json")
    if err != nil {
        fmt.Printf("The Http request failed with error %s\n", err)
    }

    data,_ := ioutil.ReadAll(response.Body)
    //fmt.Println(string(data))
    // Unmarshal JSON data
    var general General
    json.Unmarshal([]byte(data), &general)
    //fmt.Printf("First person: %s, Message: %s", general.People[0].Name, general.Message)

    // Create a csv file
    csvdatafile, err := os.Create("./astros.csv")
    if err != nil {
        fmt.Println(err)
    }
    defer csvdatafile.Close()
    // Write Unmarshaled json data to CSV file
    w := csv.NewWriter(csvdatafile)
    for _, obj := range general.People {    
        fmt.Println("Are you going into the for ?")
        var record []string
        record = append(record, strconv.Itoa(general.Number), general.Message)
        record = append(record, obj.Name, obj.Craft)
        w.Write(record)
        fmt.Println("Are you coming here")
        record = nil
    }
    w.Flush()
    fmt.Println("Appending succed")

}

Gern Blanston · Accepted Answer · 2020-01-31 22:40:20Z

2

Well if you want it just for this example can you just write the column headers to the file before the for statement, that is:

w := csv.NewWriter(csvdatafile)
//new code 
var header []string
header = append(header, "Number")
header = append(header, "Message")
header = append(header, "Name")
header = append(header, "Craft")
w.Write(header)

for _, obj := range general.People {

answered Jan 31, 2020 at 22:40

Gern Blanston

42.7k19 gold badges53 silver badges65 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Convert JSON file into csv in golang

1 Answer 1

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related