load and parse xml from webserver for webgl

Hi together,
I am new to scripting at first.
I try to build a webgl game wich places gameobjects onClick event on certain positions stored in a xml-file.
The xml file is located in the web so it can get modified.
When I attatch my xml in the local asset folder, everything works fine.
Only the load and parse xml from the webserver wont work.
Here is my code:

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using UnityEngine.UI;
5. using System.IO;
6. using System.Xml;
7.  
8.  
9. public class createPalette : MonoBehaviour {
10.  
11.     public GameObject myPalettePrefab;
12.     GameObject myPalettePrefabClone;
13.     public float paletteposx;
14.     public float paletteposy;
15.     public float paletteposz;
16.     public string posxText;
17.     public string posyText;
18.     public string poszText;
19.     public string data;
20.     public string url = "http://beispiel.de/beispiel.xml";
21.  
22.  
23.     public void OnCreatePalette()
24.     {
25.         //string data = "beispiel.xml";   //works with xml in Assets
26.         //string data = "http://beispiel.de/beispiel.xml";  //works with xml in Win-exe but not with webgl
27.         //string data = System.IO.Path.Combine(Application.streamingAssetsPath, "beispiel.xml"); //works with xml in Win-exe but not with webgl
28.        
29.         GetFile();
30.        parseXmlFile(data);
31.  
32.     }
33.  
34.     IEnumerator GetFile()
35.     {
36.         WWW data = new WWW(url);
37.         yield return data;      
38.     }
39.  
40.  
41.  
42.     public void parseXmlFile(string xmlData)
43.     {
44.         if (posxText == "")
45.             posxText = "0";
46.         if (posyText == "")
47.             posyText = "0";
48.         if (poszText == "")
49.             poszText = "0";
50.  
51.  
52.         XmlDocument xmlDoc = new XmlDocument();
53.         //xmlDoc.Load(new StringReader(xmlData));
54.         xmlDoc.Load(xmlData);
55.  
56.         string xmlPathPattern = "//lager/palette";
57.         XmlNodeList myNodeList = xmlDoc.SelectNodes(xmlPathPattern);
58.         foreach (XmlNode node in myNodeList)
59.         {
60.             XmlNode posx = node.FirstChild;
61.             XmlNode posy = posx.NextSibling;
62.             XmlNode posz = posy.NextSibling;
63.  
64.             paletteposx = float.Parse(posx.InnerXml);
65.             paletteposy = float.Parse(posy.InnerXml);
66.             paletteposz = float.Parse(posz.InnerXml);
67.  
68.             //Debug.Log(paletteposx);
69.  
70.           myPalettePrefabClone = Instantiate(myPalettePrefab, transform.position = new Vector3(paletteposx, paletteposy, paletteposz), Quaternion.Euler(0, 180, 0)) as GameObject;
71.  
72.         }
73.     }
74. }
75.  

What am I doing wrong?
Thanks a lot,
stefan

 

Using xml.

Ok, so in all seriousness. You aren't assigning the data you get back to anything.

You have a public string called data

However, you're then creating a local variable in GetFile that is of type WWW

public string data;
WWW data;

These have nothing to do with each other and this does nothing. So, first, rename your string data to something else

public string xmlData; for example.

Then, after your yield return data; you need to actually assign the text you get to the variable.

Code (CSharp):

1. public string xmlData;
2.  
3. IEnumerator GetFile()
4.     {
5.         WWW data = new WWW(url);
6.         yield return data;
7.  
8.         xmlData = data.text;
9.     }

basically something along those lines. And of course, run the xmlData through your xmlDoc, etc.

 

Hi Brathnann,

thanks a lot for helping out of mess
Okay I tryed your solution and have of course new problems.
At first I created the public string xmlData and your piece of code.
But it runs to an error with "xmlData = www.text;" "..The name 'www' does not exist in the current context..."

So I tried to assign the data I got from WWW to the variable xmlData, but it runs to an error too:
"..The specified path is not of a legal form (empty)..."
So here is my actual piece of code:

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using UnityEngine.UI;
5. using System.IO;
6. using System.Xml;
7.  
8. public class createPalette : MonoBehaviour {
9.  
10.     public GameObject myPalettePrefab;
11.     GameObject myPalettePrefabClone;
12.     public float paletteposx;
13.     public float paletteposy;
14.     public float paletteposz;
15.     public string posxText;
16.     public string posyText;
17.     public string poszText;
18.     public string data;
19.     public string xmlData;
20.     public string url = "http://beispiel.de//beispiel.xml";
21.  
22.  
23.     public void OnCreatePalette()
24.     {
25.         GetFile();
26.         parseXmlFile(data);
27.     }
28.  
29.     IEnumerator GetFile()
30.     {
31.           WWW data = new WWW(url);
32.         yield return data;
33.         xmlData = data.text;
34.     }
35.  
36.     public void parseXmlFile(string xmlData)
37.     {
38.         if (posxText == "")
39.             posxText = "0";
40.         if (posyText == "")
41.             posyText = "0";
42.         if (poszText == "")
43.             poszText = "0";
44.  
45.  
46.         XmlDocument xmlDoc = new XmlDocument();
47.         xmlDoc.Load(xmlData);
48.  
49.         string xmlPathPattern = "//lager/palette";
50.         XmlNodeList myNodeList = xmlDoc.SelectNodes(xmlPathPattern);
51.         foreach (XmlNode node in myNodeList)
52.         {
53.             XmlNode posx = node.FirstChild;
54.             XmlNode posy = posx.NextSibling;
55.             XmlNode posz = posy.NextSibling;
56.  
57.             paletteposx = float.Parse(posx.InnerXml);
58.             paletteposy = float.Parse(posy.InnerXml);
59.             paletteposz = float.Parse(posz.InnerXml);
60.  
61.             //Debug.Log(paletteposx);
62.  
63.           myPalettePrefabClone = Instantiate(myPalettePrefab, transform.position = new Vector3(paletteposx, paletteposy, paletteposz), Quaternion.Euler(0, 180, 0)) as GameObject;
64.  
65.         }
66.     }
67. }
68.  

Thanks a lot,
Stefan

 

Oh, yeah. www.text is a habit.
I ususally do
WWW www = new WWW(url); That part is my mistake.

Get rid of your

public string data; It's not needed and just creates confusion with your WWW call.

I don't use xml anymore currently, so I don't recall all the stuff for it. But, it looks like you can't use xmlDoc.Load on a string itself.

https://msdn.microsoft.com/en-us/library/875kz807(v=vs.110).aspx

It appears the string version takes a url and not a string of text. I'll be honest, I'm not sure how to load a string of text into the xmlDoc this way.

try

Code (CSharp):

1. xmlDoc.LoadXml(xmlData);