用curl可以访问的地址内容，如何通过go语言的http包实现

Question

比如我在命令行实现

 curl --data '{"jsonrpc":"1.0","id":"curltest","method":"getwalletinfo","params":[]}' http://user:123456@127.0.0.1:18332/

返回内容如

 {"result":{"walletname":"","walletversion":169900,"balance":0.00652964,"unconfirmed_balance":0.00000000,"immature_balance":0.00000000,"txcount":9,"keypoololdest":1541586836,"keypoolsize":1000,"keypoolsize_hd_internal":1000,"paytxfee":0.00000000,"hdseedid":"903b49b210bd3ef7e36326b34acdadff831ea1e0","hdmasterkeyid":"903b49b210bd3ef7e36326b34acdadff831ea1e0","private_keys_enabled":true},"error":null,"id":"curltest"}

我如何通过go语言来返回相同的内容？http.post函数能否完成，如果能完成需要怎么做？

Answer 1

curl 的--data就是POST的json数据给服务器。所以你go也是提交对应的post请求和数据就可以了

func main() {
    url := "http://restapi3.apiary.io/notes"
    fmt.Println("URL:>", url)

    var jsonStr = []byte(`{"title":"Buy cheese and bread for breakfast."}`)
    req, err := http.NewRequest("POST", url, bytes.NewBuffer(jsonStr))
    req.Header.Set("X-Custom-Header", "myvalue")
    req.Header.Set("Content-Type", "application/json")

    client := &http.Client{}
    resp, err := client.Do(req)
    if err != nil {
        panic(err)
    }
    defer resp.Body.Close()

    fmt.Println("response Status:", resp.Status)
    fmt.Println("response Headers:", resp.Header)
    body, _ := ioutil.ReadAll(resp.Body)
    fmt.Println("response Body:", string(body))
}