SimpleJSON - Lightweight and easy to use JSON importer / exporter

For my own project I use a webserver with a database behind it and let my users communicate with it through JSON, because it is lightweight and very readable.

I needed a lightweight importer / exporter, that uses only 1 line of code to activate and produces a plain and simple structure of Hashtables and ArrayLists. And I wanted it to be a bit forgiving in case of JSOn format errors as well. I hate it when an importer throws an exception the very second you forgot to add a comma at the end.

So I made the importer and added some handy functions to the exisiting Hashtable and ArrayList classes, to easily retrieve information.

Import a JSON string:
myHashtable = SimpleJsonImporter.Import(jsonString);

Export a JSON string:
string jsonString = myHashtable.JsonString();

Query the hierarchy
Hashtable bookInfo = myHashtable.GetNodeWithProperty("Author", "George Orwell");

All source code is included and written in C#. There are no DLL's or hidden stuff.

View the online webplayer demo (also included in the package) here
The documentation can be viewed on my website.

 

HI, I have bought this and although I can get it to download json from a URL I cannot get it to tell me if a given key exists, all i seem to see in the docs is being able to find a given key with a given value?

I need to be able to determine if the json contains a key name 'error'

Help please?

Thanks

 

You have several options:

Code (CSharp):

1. Hashtable myJsonHash = SimpleJsonImporter.Import(myJsonString);
2.  
3. if(myJsonHash == null) Debug.LogError("something went terribly wrong");
4. else {
5.     // depending on how your json is set up, you can do one of the following:
6.  
7.     // When error is a direct property of your json Hashtable, this is the easiest way
8.     if(myJsonHash.ContainsKey("error")) {
9.         Debug.LogError((string)myJsonHash["error"]);
10.     }
11.  
12.     // Alternative
13.     object node = myJsonHash.GetNodeAtPath(new string[1] {"error"});
14.     if(node != null) {
15.         Debug.LogError((string)node);
16.     }
17.  
18.     // When the error is deeper down the json structure
19.     object deeperNode = myJsonHash.GetNodeAtPath(new string[3] {"data", "queryResults", "error"});
20.     if(deeperNode != null) {
21.         Debug.LogError((string)deeperNode);
22.     }
23. }
24.  

 

I have bought the plugin and understand the simple operation. However, "GetNodeAtPath" can only return the first object, how can I get the others ? For example { type : feature [ data ], type : feature [data], type : feature [data], .... }

 

Thanks ;-)

 

What's i must do from here ? please

DirectoryInfo levelDirectoryPath = new DirectoryInfo(dir);
FileInfo[] fileInfo = levelDirectoryPath.GetFiles("*.*", SearchOption.AllDirectories);
foreach (FileInfo file in fileInfo) {

// file extension check
if (file.Extension == ".json") {

 

Code (CSharp):

1.  
2. DirectoryInfo levelDirectoryPath = new DirectoryInfo(dir);
3. FileInfo[] fileInfo = levelDirectoryPath.GetFiles("*.json", SearchOption.AllDirectories);
4. foreach (FileInfo file in fileInfo) {
5.    StreamReader streamReader = new StreamReader(file.ToString());
6.   string fileContents = streamReader.ReadToEnd();
7.   Hashtable myJsonHash = SimpleJsonImporter.Import(fileContents);
8.   // Do something with your json stuff here
9.  
10.    streamReader.Close();
11. }
12.  

Or something like that