unitywebrequest下载文本文件

可以使用UnityWebRequest来下载文本文件，具体步骤如下：

1. 创建UnityWebRequest对象，并设置下载地址和请求方式：

string url = "http://www.example.com/textfile.txt";
UnityWebRequest request = UnityWebRequest.Get(url);

2. 发送请求并等待响应：

yield return request.SendWebRequest();

3. 检查是否有错误发生：

if (request.result != UnityWebRequest.Result.Success)
{
    Debug.Log(request.error);
}
else
{
    // 下载完成，可以获取文本内容
    string text = request.downloadHandler.text;
    Debug.Log(text);
}

完整示例代码：

using UnityEngine;
using UnityEngine.Networking;
using System.Collections;

public class TextFileDownloader : MonoBehaviour
{
    IEnumerator Start()
    {
        string url = "http://www.example.com/textfile.txt";
        UnityWebRequest request = UnityWebRequest.Get(url);

        yield return request.SendWebRequest();

        if (request.result != UnityWebRequest.Result.Success)
        {
            Debug.Log(request.error);
        }
        else
        {
            string text = request.downloadHandler.text;
            Debug.Log(text);
        }
    }
}