unity 错误日志上传服务器

using Newtonsoft.Json;
using System;
using System.IO;
using System.Text;
using UnityEngine;
using Debug = UnityEngine.Debug;

public class WriteLog : MonoBehaviour
{
    private static FileStream FileWriter;
    private static UTF8Encoding encoding;
    private static WriteLog consoleLog;

    public static WriteLog ConsoleLog
    {
        get
        {
            if (consoleLog == null)
                consoleLog = new WriteLog();
            return consoleLog;
        }
    }
    FileInfo fileInfo;
    public void LogStart()
    {
        var path = Application.persistentDataPath + "/Log";
        Directory.CreateDirectory(path);
        string NowTime = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss").Replace(" ", "_").Replace("/", "_").Replace(":", "_");
        fileInfo = new FileInfo(Application.persistentDataPath + "/Log/" + NowTime + "_Log.txt");
        FileWriter = fileInfo.Open(FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.Read);
        encoding = new UTF8Encoding();
        Application.logMessageReceived += LogCallback;
    }
    /// <summary>
    /// Log回调
    /// </summary>
    /// <param name="condition">输出内容</param>
    /// <param name="stackTrace">堆栈追踪</param>
    /// <param name="type">Log日志类型</param>
    private void LogCallback(string condition, string stackTrace, LogType type)
    {
        if (type == LogType.Log) return;
        string content = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + " " + "【" + type + "】" + "【" + stackTrace + "】" + ":" + condition + Environment.NewLine + Environment.NewLine;
        FileWriter.Write(encoding.GetBytes(content), 0, encoding.GetByteCount(content));
        FileWriter.Flush();
        this.uploadLog();
    }

    private void OnDestroy() 
    {
        if ((FileWriter != null))
        {
            FileWriter.Close();
            Application.logMessageReceived -= LogCallback;
            FileUtils.DelectDir(Application.persistentDataPath + "/Log");
        }
    }

    void uploadLog()
    {
        if ((FileWriter != null))
        {
            FileWriter.Close();
            Application.logMessageReceived -= LogCallback;
        }
     
        byte[] bytes = File.ReadAllBytes(this.fileInfo.FullName);
        WWWForm form = new WWWForm();
  
        form.AddBinaryData("file", bytes, this.fileInfo.Name);
        HttpMgr.SendRequest("m/exceptionlog", form, (bool success, string data) =>
        {
            if (success)
            {
                Debug.Log("上传成功");
                FileUtils.DelectDir(Application.persistentDataPath + "/Log");
                this.LogStart();
            }
        });
    }
}