Unity 中将 XHR 请求改为 JSONP 请求发送

请注意，将 XHR 类型改为 JSONP 类型发送需要修改网页的前端代码，以便支持 JSONP 跨域请求。

以下是修改后的代码示例：

using System;
using System.Collections;
using System.Xml.Linq;
using UnityEngine;
using UnityEngine.Networking;

public class GenshinTextToSpeech : TTS
{
    #region 参数定义
    /// <summary>
    /// Genshin配置项
    /// </summary>
    /// <summary>
    /// 朗读的角色
    /// </summary>
    [Header("朗读声音设置")]
    public string speaker = "胡桃";
    /// <summary>
    /// 音频格式
    /// </summary>
    [Header("音频格式设置")]
    public string format = "wav";
    /// <summary>
    /// 音频长度
    /// </summary>
    [Header("音频长度设置")]
    public float length = 1f;
    /// <summary>
    /// 噪声
    /// </summary>
    [Header("噪声设置")]
    public float noise = 0.5f;
    /// <summary>
    /// 噪声权重
    /// </summary>
    [Header("噪声权重设置")]
    public float noisew = 0.9f;
    /// <summary>
    /// 声调比例
    /// </summary>
    [Header("声调比例设置")]
    public float sdp_ratio = 0.2f;

    #endregion

    private void Awake()
    {
        m_PostURL = "https://genshinvoice.top/api";
    }

    /// <summary>
    /// 语音合成
    /// </summary>
    /// <param name="_msg"></param>
    /// <param name="_callback"></param>
    public override void Speak(string _msg, Action<AudioClip> _callback)
    {
        StartCoroutine(GetVoice(_msg, _callback));
    }

    /// <summary>
    /// 语音合成，返回合成文本
    /// </summary>
    /// <param name="_msg"></param>
    /// <param name="_callback"></param>
    public override void Speak(string _msg, Action<AudioClip, string> _callback)
    {
        StartCoroutine(GetVoice(_msg, _callback));
    }

    /// <summary>
    /// restful api语音合成
    /// </summary>
    /// <param name="_msg"></param>
    /// <param name="_callback"></param>
    /// <returns></returns>
    private IEnumerator GetVoice(string _msg, Action<AudioClip> _callback)
    {
        stopwatch.Restart();
        //发送报文
        string textToSpeechRequestBody = GenerateTextToSpeech(speaker, _msg, format, length, noise, noisew, sdp_ratio);

        // 将发送请求的方式改为JSONP
        using (UnityWebRequest speechRequest = UnityWebRequest.Get(textToSpeechRequestBody))
        {
            // 设置跨域请求头
            speechRequest.SetRequestHeader("Access-Control-Allow-Origin", "*");
            speechRequest.SetRequestHeader("Access-Control-Allow-Methods", "GET");
            speechRequest.SetRequestHeader("Access-Control-Allow-Headers", "Content-Type");
            speechRequest.SetRequestHeader("Access-Control-Max-Age", "3600");

            // 发送请求
            yield return speechRequest.SendWebRequest();

            if (speechRequest.result == UnityWebRequest.Result.Success)
            {
                AudioClip audioClip = DownloadHandlerAudioClip.GetContent(speechRequest);
                _callback(audioClip);
            }
            else
            {
                Debug.LogError("语音合成失败: " + speechRequest.error);
            }
        }

        stopwatch.Stop();
        Debug.Log("Genshin语音合成耗时：" + stopwatch.Elapsed.TotalSeconds);
    }

    /// <summary>
    /// restful api语音合成，返回合成文本
    /// </summary>
    /// <param name="_msg"></param>
    /// <param name="_callback"></param>
    /// <returns></returns>
    private IEnumerator GetVoice(string _msg, Action<AudioClip, string> _callback)
    {
        stopwatch.Restart();
        //发送报文
        string textToSpeechRequestBody = GenerateTextToSpeech(speaker, _msg, format, length, noise, noisew, sdp_ratio);

        // 将发送请求的方式改为JSONP
        using (UnityWebRequest speechRequest = UnityWebRequest.Get(textToSpeechRequestBody))
        {
            // 设置跨域请求头
            speechRequest.SetRequestHeader("Access-Control-Allow-Origin", "*");
            speechRequest.SetRequestHeader("Access-Control-Allow-Methods", "GET");
            speechRequest.SetRequestHeader("Access-Control-Allow-Headers", "Content-Type");
            speechRequest.SetRequestHeader("Access-Control-Max-Age", "3600");

            // 发送请求
            yield return speechRequest.SendWebRequest();

            if (speechRequest.result == UnityWebRequest.Result.Success)
            {
                AudioClip audioClip = DownloadHandlerAudioClip.GetContent(speechRequest);
                _callback(audioClip, _msg);
            }
            else
            {
                Debug.LogError("语音合成失败: " + speechRequest.error);
            }
        }

        stopwatch.Stop();
        Debug.Log("Genshin语音合成耗时：" + stopwatch.Elapsed.TotalSeconds);
    }

    /// <summary>
    /// 报文格式转换
    /// </summary>
    /// <param name="speaker"></param>
    /// <param name="msg"></param>
    /// <param name="format"></param>
    /// <param name="length"></param>
    /// <param name="noise"></param>
    /// <param name="noisew"></param>
    /// <param name="sdp_ratio"></param>
    /// <returns></returns>
    public string GenerateTextToSpeech(string speaker, string msg, string format, float length, float noise, float noisew, float sdp_ratio)
    {
        string urlParams = string.Format("?speaker={0}&text={1}&format={2}&length={3}&noise={4}&noisew={5}&sdp_ratio={6}", speaker, msg, format, length, noise, noisew, sdp_ratio);
        string url = m_PostURL + urlParams;

        return url;
    }
}

请注意，这只是修改了后端的代码，前端代码也需要做出相应的修改以支持 JSONP 跨域请求。