WebGL builds and streamingAssetsPath

I have a Unity build that references a .json file. This file is to be kept in the streamingAssets folder after the build. The build works great on the desktop when I use the line of code below to call the file in my script (using LitJson):

Code (CSharp):

1.  jsonString = File.ReadAllText(Application.streamingAssetsPath + "/quatData.json");

However, when building with WebGL, I get an error in the console that reads:

The path in the console is almost the correct location for quatData.json, but I believe that the slash in front of the http would cause the link to fail. Any ideas why this isn't working or why there is a slash after the build?

 

Version 5.2.2f1 Personal

 

Hi,

Its not working for me, I am using Unity 5.3.5 please find the code here, In editor its working fine.

Code (CSharp):

1. public string filePath = Application.streamingAssetsPath + "/UserDetails.xml";
2.     public string result = "";
3.  
4.     IEnumerator userDetailsXmlPath()
5.     {
6.         print (filePath);
7.  
8.         if (filePath.Contains ("://") || filePath.Contains (":///")) {
9.             WWW www = new WWW (filePath);
10.             yield return www;
11.             result = www.text;
12.  
13.             print (result);
14.             FetchUserDetails ();
15.         } else {
16.             result = File.ReadAllText (filePath);
17.  
18.             print (result);
19.             FetchUserDetails ();
20.         }
21.     }
22.  
23.     public void FetchUserDetails()
24.     {
25.         XmlDocument userXml1 = new XmlDocument ();
26.     //    userXml1.Load(Application.streamingAssetsPath + "/UserDetails.xml");
27.     //    userXml1.Load(Application.dataPath + "js/UserDetails 1.xml");
28.     //    userXml1.LoadXml(userXml.text);
29.  
30.         userXml1.LoadXml(result);
31.  
32.  
33.         XmlNodeList userList = userXml1.GetElementsByTagName ("user");
34.  
35.         foreach(XmlNode userValue in userList)
36.         {
37.             XmlNodeList userContent = userValue.ChildNodes;
38.             objUser = new Dictionary<string, string>();
39.  
40.             foreach(XmlNode value in userContent)
41.             {
42.                 objUser.Add (value.Name, value.InnerText);
43.             }
44.  
45.             userFullDetails.Add (objUser);
46.  
47.             userCountInXml = userList.Count;
48.  
49.             userId = new string[userList.Count];
50.             questionSetOfUser = new string[userList.Count];
51.         }
52.  
53.         AssignUserXmlValuesToArray ();
54.     }

 

I've got the same issue. Only difference being that in my case i am reading data from a '.txt' file. While searching for a solution for this issue, i read somewhere that this is because WebGL builds do not support System.IO operations due to security reasons. It would be very helpful if one of the UNITY guys could confirm me on this and also help on this issue.

 

I've the same issue!

 

Hi all, i'm Working on a Multiplatform Project, Including WebGL. The project move around 3 different scenes. Before load other scene i use Easy Save 2 asset for saving some object, materials, etc. Easy save 2, uses File on Desktop Platforms and Playerprefs on WebGL. all works fine on editor and Standalone, but on WebGL, I receive the playerprefs exception. probably because i'm over the limit of 1mb for the Playerprefs.

At the moment i'm stuck because i've not found any solution to fix this. and so,
Someone can give me some suggestions, solution to jump this big obstacle ?

Thanks in advance and Best regards -

 

Shouldn't that be yield return www.Send();
?

And result = www.downloadManager.text?

https://docs.unity3d.com/ScriptReference/Application-streamingAssetsPath.html

 

Could not find a part of the path "/http:/localhost:3333/StreamingAssets/xyv.json".

one slash comes before http:. The path is fine. Browser is chrome. I think Chrome supports file system?. I suspect some project setting getting corrupt.. If anyone else has any ideas, it would be great!

I have exact same issue with Unity WebGL while using 2018.3 and also 2019.

 

I have same issue like you,you can rebuild localhost path at parent folder of unity project

 

Hello,
You can access StreamingAssset folder using UnityWebRequest.

Code (CSharp):

1. //Inside a couroutine
2. string path = "StreamingAssets/myFile.txt"; //This works because index.html is in the same folder as StreamingAssets ?
3. UnityWebRequest uwr = UnityWebRequest.Get(path);
4. yield return uwr.SendWebRequest();

Code (CSharp):

1. uwr.downloadHandler.data

gives you an array of bytes (usefull for loading image for example)

Code (CSharp):

1. uwr.downloadHandler.text

gives you the content of the file

Hope it helps.

 

Hi rc31, I'm having problems getting AssetBundles from the StreamingAssets folder into my WebGL build, I get response code 200 but no data is downloaded...
here's my code:

Code (CSharp):

1.  IEnumerator DownLoadAsset(assetName)
2.     {
3.         UnityWebRequest unityWebRequest = UnityWebRequestAssetBundle.GetAssetBundle(Application.streamingAssetsPath);
4.         yield return unityWebRequest.Send();
5.         Debug.Log("responseCode:" + unityWebRequest.responseCode);
6.         if (unityWebRequest.isDone)
7.         {
8.             ab = (unityWebRequest.downloadHandler as DownloadHandlerAssetBundle).assetBundle;
9.             Instantiate(ab.LoadAsset(assetName) as GameObject, Vector3.zero, new Quaternion(0, 0, 0, 0));
10.         }
11.     }

any help would be greatly appreciated!!!

 

I think I know what happened.
That's not like android or iOS on which files in streamingAssets folder is downloaded with main app bundle.
On WebGL, they are not downloaded automatically and `Application.streamingAssetsPath` is local path when they are downloaded. And we need to download them first by ourselves then we can use `Application.streamingAssetsPath` & File IO to access them. Is it right?

 

did you get around this? I am having the same issue.

 

Code (CSharp):

1. string path = Path.Combine(Application.streamingAssetsPath, name.ToLower());
2.      
3.         UnityWebRequest request = UnityWebRequestAssetBundle.GetAssetBundle(path);
4.         yield return request.SendWebRequest();
5.  
6.         if (request.isNetworkError || request.isHttpError)
7.         {
8.             Debug.LogError(request.error);
9.         }
10.         else
11.         {
12.                 // Get downloaded asset bundle
13.                 AssetBundle bundle = DownloadHandlerAssetBundle.GetContent(request);
14.  
15.                 if (bundle == null)
16.                 {
17.                     Debug.Log("Failed to load AssetBundle!");
18.                     yield break;
19.                 }
20.  
21.                 GameObject prefab = bundle.LoadAsset<GameObject>(name);
22.                 callback(prefab);
23.  
24.                 // Use the loaded AssetBundle here...
25.                 bundle.Unload(false);
26.          
27.         }

Its working for localhost webgl