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main.go
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main.go
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package main
import (
"crypto/hmac"
"crypto/sha1"
"encoding/base64"
"fmt"
"io/ioutil"
"net/http"
"net/url"
"sort"
"strings"
"time"
)
const publicKey = "XXX" // 公钥
const secret = "XXX" // 私钥
func Get(url string) ([]byte, error) {
req, err := http.NewRequest("GET", url, nil)
if err != nil {
fmt.Println("net.NewRequest err", url)
return nil, err
}
client := &http.Client{
Timeout: 15 * time.Second,
Transport: &http.Transport{
TLSHandshakeTimeout: 15 * time.Second,
ResponseHeaderTimeout: 15 * time.Second,
ExpectContinueTimeout: 1 * time.Second,
},
}
rsp, err := client.Do(req)
if err != nil {
return nil, err
}
defer rsp.Body.Close()
bodyBytes, err := ioutil.ReadAll(rsp.Body)
if err != nil {
return nil, err
}
return bodyBytes, nil
}
// UrlValuesToString 将 url.Value 转换成字符串
func UrlValuesToString(v url.Values) string {
if v == nil {
return ""
}
var buf strings.Builder
keys := make([]string, 0, len(v))
for k := range v {
keys = append(keys, k)
}
sort.Strings(keys)
for _, k := range keys {
vs := v[k]
for _, v := range vs {
if buf.Len() > 0 {
buf.WriteByte('&')
}
buf.WriteString(k)
buf.WriteByte('=')
buf.WriteString(v)
}
}
return buf.String()
}
func EncodeUrlValues(v url.Values) string {
if v == nil {
return ""
}
var buf strings.Builder
keys := make([]string, 0, len(v))
for k := range v {
keys = append(keys, k)
}
sort.Strings(keys)
for _, k := range keys {
vs := v[k]
for _, v := range vs {
if buf.Len() > 0 {
buf.WriteByte('&')
}
buf.WriteString(k)
buf.WriteByte('=')
buf.WriteString(url.QueryEscape(v))
}
}
return buf.String()
}
// 签名
func signature(urlStr string, params map[string]string) (string, error) {
urlObj, err := url.ParseRequestURI(urlStr)
if err != nil {
return "", err
}
values, err := url.ParseQuery(urlObj.RawQuery)
if err != nil {
return "", err
}
for key, value := range params {
values[key] = []string{value}
}
//values["public_key"] = []string{publicKey}
queryStr := UrlValuesToString(values)
encodeQueryStr := EncodeUrlValues(values)
secretBytes := []byte(secret)
hash := hmac.New(sha1.New, secretBytes)
hash.Write([]byte(queryStr))
encoded := base64.StdEncoding.EncodeToString(hash.Sum(nil))
encoded = url.QueryEscape(encoded)
urlObj.RawQuery = fmt.Sprintf("%s&sig=%s", queryStr, encoded)
encodeUrl := fmt.Sprintf("%s://%s%s?%s&sig=%s", urlObj.Scheme, urlObj.Host, urlObj.Path, encodeQueryStr, encoded)
fmt.Println("浏览器访问链接:", encodeUrl)
return urlObj.String(), nil
}
func main() {
urlStr := "https://api.seniverse.com/v4?fields=precip_minutely"
ts := fmt.Sprintf("%d", time.Now().Unix())
ttl := "600"
latitude := 29.5617
longitude := 120.0962
urlStr, err := signature(urlStr, map[string]string{
"ts": ts,
"ttl": ttl,
"public_key": publicKey,
"locations": fmt.Sprintf("%f:%f", latitude, longitude),
})
if err != nil {
return
}
bodyBytes, err := Get(urlStr)
if err != nil {
return
}
fmt.Println(string(bodyBytes))
}