golang post方式发送json数据代码样例

package main

import (

"bytes"

"encoding/json"

"net/http"

)

func main() {

url := "http://example.com/data"

data := map[string]string{"key": "value"}

jsonData, err := json.Marshal(data)

if err != nil {

panic(err)

}

req, err := http.NewRequest("POST", url, bytes.NewBuffer(jsonData))

if err != nil {

panic(err)

}

req.Header.Set("Content-Type", "application/json")

client := &http.Client{}

resp, err := client.Do(req)

if err != nil {

panic(err)

}

defer resp.Body.Close()

}