146 lines
4.5 KiB
C#
146 lines
4.5 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Net;
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using BestHTTP;
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using LitJson;
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using UnityEngine;
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using UnityEngine.Events;
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public class DownloadJsonFile
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{
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public string rawJsonText { get; private set; }
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public JsonData jsonData { get; private set; }
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public string error { get; private set; }
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public UnityAction<DownloadJsonFile> onDownloadComplete;
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// 用于传递异步数据
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public object token;
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private readonly float _timeOut;
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private readonly Uri _uri;
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private bool _done;
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private HTTPRequest _request;
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private readonly Dictionary<string, string> _data;
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public DownloadJsonFile(string uri, float timeOut, Dictionary<string, string> data = null)
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{
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try
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{
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_uri = new Uri(uri);
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}
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catch (Exception e)
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{
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_uri = null;
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error = "Failed to init uri for DownloadJsonFile!\n" + e;
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}
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_data = data;
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_timeOut = timeOut;
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}
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public void Dispose(string overrideError = default(string))
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{
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if (!_done)
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{
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_done = true;
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if (_request != null)
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{
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_request.Abort();
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try
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{
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if (_request.Response != null)
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_request.Response.Dispose();
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}
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catch (Exception e)
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{
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Debug.LogError(e);
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}
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_request = null;
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}
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error = string.IsNullOrEmpty(overrideError) ? "DownloadJsonFile disposed!" : overrideError;
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if (onDownloadComplete != null)
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onDownloadComplete(this);
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}
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}
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public void Start()
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{
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if (_request == null && !_done)
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{
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Debug.Log("DownloadJsonFile Start , URL: " + _uri );
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if (_uri == null)
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Dispose("DownloadJsonFile uri is not correctly parsed!");
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else
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{
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if (_data == null)
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_request = new HTTPRequest(_uri, HTTPMethods.Get);
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else
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{
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_request = new HTTPRequest(_uri, HTTPMethods.Post);
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foreach (var keyValue in _data)
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_request.AddField(keyValue.Key, keyValue.Value);
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}
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_request.DisableCache = true;
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_request.Timeout = TimeSpan.FromSeconds(_timeOut);
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_request.Callback = GetResponseComplete;
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_request.Send();
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}
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}
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}
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private void GetResponseComplete(HTTPRequest originalRequest, HTTPResponse response)
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{
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if (!_done)
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{
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_done = true;
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if (response == null)
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error = "DownloadJsonFile cannot get HTTPResponse!";
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else if (!response.IsSuccess)
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error = string.Format("DownloadJsonFile Error:\n{0} - {1}", response.StatusCode,
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response.Message);
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else
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{
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rawJsonText = response.DataAsText.Trim();
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Debug.Log("Download Text " + rawJsonText);
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try
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{
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// 可能是404之类的错误码，因此排除10以下长度；一般格式带status, message就超过10了。
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if (string.IsNullOrEmpty(rawJsonText) || rawJsonText.Length < 10)
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{
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error = "OnGetResponseComplete get a string less than 10 from the server:\n" + rawJsonText;
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}
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else
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{
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jsonData = JsonMapper.ToObject(rawJsonText);
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error = string.Empty;
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}
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}
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catch (WebException e)
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{
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error = string.Format("WebException at status {0}!\n{1}", e.Status, e);
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}
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catch (Exception e)
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{
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error = e.ToString();
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}
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}
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if (_request != null)
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{
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_request.Dispose();
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_request = null;
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}
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if (response != null)
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{
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try
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{
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response.Dispose();
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}
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catch (Exception e)
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{
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Debug.LogError(e);
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}
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}
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if (onDownloadComplete != null)
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onDownloadComplete(this);
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}
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}
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} |