Operation handles support error queries

操作句柄支持错误信息查询。

Assets/YooAsset/Runtime/DownloadSystem/Downloader/DownloaderBase.cs

@@ -98,19 +98,27 @@ namespace YooAsset
 		}
 
 		/// <summary>
-		/// 报告错误信息
+		/// 按照错误级别打印错误
 		/// </summary>
 		public void ReportError()
 		{
-			YooLogger.Error($"Failed to download : {_requestURL} Error : {_lastError}");
+			YooLogger.Error(GetLastError());
 		}
 
 		/// <summary>
-		/// 获取最近一条错误日志
+		/// 按照警告级别打印错误
+		/// </summary>
+		public void ReportWarning()
+		{
+			YooLogger.Warning(GetLastError());
+		}
+
+		/// <summary>
+		/// 获取最近发生的错误信息
 		/// </summary>
 		public string GetLastError()
 		{
-			return _lastError;
+			return $"Failed to download : {_requestURL} Error : {_lastError}";
 		}
 	}
 }

Assets/YooAsset/Runtime/DownloadSystem/Downloader/FileDownloader.cs

@@ -95,17 +95,21 @@ namespace YooAsset
 				}
 				else
 				{
-					ReportError();
-
 					string cacheFilePath = _bundleInfo.GetCacheLoadPath();
 					if (File.Exists(cacheFilePath))
 						File.Delete(cacheFilePath);
 
 					// 失败后重新尝试
 					if (_failedTryAgain > 0)
+					{
+						ReportWarning();
 						_steps = ESteps.TryAgain;
+					}
 					else
+					{
+						ReportError();
 						_steps = ESteps.Failed;
+					}
 				}
 
 				// 释放下载器

Assets/YooAsset/Runtime/DownloadSystem/Downloader/HttpDownloader.cs

@@ -211,13 +211,18 @@ namespace YooAsset
 				if (_threadDownloader.HasError())
 				{
 					_lastError = _threadDownloader.Error;
-					ReportError();
 
 					// 失败后重新尝试
 					if (_failedTryAgain > 0)
+					{
+						ReportWarning();
 						_steps = ESteps.TryAgain;
+					}
 					else
+					{
+						ReportError();
 						_steps = ESteps.Failed;
+					}
 				}
 				else
 				{
@@ -240,7 +245,7 @@ namespace YooAsset
 		}
 		public override void Abort()
 		{
-			if(IsDone() == false)
+			if (IsDone() == false)
 			{
 				_steps = ESteps.Failed;
 				_lastError = "user abort";