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package mainimport (	"time"	"fmt"	"strings"	"io/ioutil"	"encoding/json"	"net/http"	"net"	"net/url"	"strconv"	"crypto/tls")const POST_REMOTE_TIMEOUT = 30const (	// APP相关的两个KEY,需要从百度AI开放平台申请	API_KEY = "4E1BG9lTnlSeIf1NQFlrSq6h"	SECRET_KEY = "544ca4657ba8002e3dea3ac2f5fdd241"	// 发音人选择, 0为普通女声，1为普通男生，3为情感合成-度逍遥，4为情感合成-度丫丫，默认为普通女声	PER = 4	// 语速，取值0-15，默认为5中语速	SPD = 5	// 音调，取值0-15，默认为5中语调	PIT = 5	// 音量，取值0-9，默认为5中音量	VOL = 9	// 下载的文件格式, 3：mp3(default) 4： pcm-16k 5： pcm-8k 6. wav	AUE = 3	CUID = "123456PYTHON"	TTS_URL = "http://tsn.baidu.com/text2audio"	TOKEN_URL = "http://openapi.baidu.com/oauth/2.0/token")type CommResp struct {
   	AccessToken     string    `json:"access_token"`	SessionKey      string    `json:"session_key"`	Scope           string    `json:"scope"`	RefreshToken    string    `json:"refresh_token"`	SessionSecret   string    `json:"session_secret"`	ExpiresIn       string    `json:"expires_in"`}func main() {
   	token := fetch_token()	tex := "hi, 我是百度智能语音合成机器人, 加油加油!"	var format_map = make(map[int]string, 0)	format_map[3] = "mp3"	format_map[4] = "pcm"	format_map[5] = "pcm"	format_map[6] = "wav"	params := make(map[string]interface{
   }, 0)	params["tok"] = token	params["tex"] = tex	params["per"] = PER	params["spd"] = SPD	params["pit"] = PIT	params["vol"] = VOL	params["aue"] = AUE	params["cuid"] = CUID	params["lan"] = "zh"	params["ctp"] = 1	response := sendRequest(TTS_URL, params, "GET")	name := fmt.Sprintf("result.%v", format_map[AUE])	WriteWithIoutil(name, response)}func fetch_token() string {
   	params := make(map[string]interface{
   }, 0)	params["grant_type"] = "client_credentials"	params["client_id"] = API_KEY	params["client_secret"] = SECRET_KEY	response := sendRequest(TOKEN_URL, params, "GET")	var res CommResp	if err := json.Unmarshal([]byte(response), &res); err == nil {
   		fmt.Printf("res=[%v]\n", res)	}	return res.AccessToken}func WriteWithIoutil(name, content string) {
   	data :=  []byte(content)	if ioutil.WriteFile(name,data,0644) == nil {
   		fmt.Println("生成音频文件成功:", name)	}}func dialTimeout(network, addr string) (net.Conn, error) {
   	return net.DialTimeout(network, addr, time.Second*POST_REMOTE_TIMEOUT)}func typeSwitcher(t interface{
   }) string {
   	switch v := t.(type) {
   	case int:		return strconv.Itoa(v)	case string:		return v	case int64:		return strconv.Itoa(int(v))	case []string:		return "typeArray"	case map[string]interface{
   }:		return "typeMap"	default:		return ""	}}func ParamsToStr(params map[string]interface{
   }) string {
   	isfirst := true	requesturl := ""	for k, v := range params {
   		if !isfirst {
   			requesturl = requesturl + "&"		}		isfirst = false		if strings.Contains(k, "_") {
   			strings.Replace(k, ".", "_", -1)		}		v := typeSwitcher(v)		requesturl = requesturl + k + "=" + url.QueryEscape(v)	}	return requesturl}func httpGet(url string) string {
   	tr := &http.Transport{
   		TLSClientConfig: &tls.Config{
   InsecureSkipVerify: true},	}	client := &http.Client{
   Transport: tr, Timeout: time.Duration(3) * time.Second}	fmt.Println(url)	resp, err := client.Get(url)	if err != nil {
   		fmt.Println(err)		return err.Error()	}	defer resp.Body.Close()	body, erro := ioutil.ReadAll(resp.Body)	if erro != nil {
   		fmt.Println("http wrong erro")		return erro.Error()	}	return string(body)}func httpPost(requesturl string, params map[string]interface{
   }) string {
   	b, err := json.Marshal(params)	if err != nil {
   		fmt.Errorf("json.Marshal failed[%v]", err)		return err.Error()	}	req, err := http.NewRequest("POST", requesturl, strings.NewReader(string(b)))	req.Header.Set("Content-Type", "application/json")	transport := http.Transport {
   		Dial: dialTimeout,		DisableKeepAlives: true,	}	client := &http.Client{
   Transport: &transport, Timeout: time.Duration(30) * time.Second}	resp, err := client.Do(req)	if err != nil {
   		fmt.Println(err)		return err.Error()	}	defer resp.Body.Close()	body, erro := ioutil.ReadAll(resp.Body)	if erro != nil {
   		fmt.Println("http wrong erro")		return erro.Error()	}	return string(body)}func sendRequest(requesturl string, params map[string]interface{
   }, method string) string {
   	response := ""	if method == "GET" {
   		params_str := "?" + ParamsToStr(params)		requesturl = requesturl + params_str		response = httpGet(requesturl)	} else if method == "POST" {
   		response = httpPost(requesturl, params)	} else {
   		fmt.Println("unsuppported http method")		return "unsuppported http method"	}	return response}

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