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javajsonjson-lib

Convert json string to Java Map(JSONLib)


How can I convert json string to Java Map using JSON-lib(http://json-lib.sourceforge.net/) ? I can convert to DynaBean:

JSONObject jsonObject = (JSONObject) JSONSerializer.toJSON( str );  
DynaBean bean = (DynaBean) JSONSerializer.toJava( jsonObject );  

but I have not found a method to convert directly to Java Map

Edit:

I have found the solution:

JSONObject jsonObject = (JSONObject) JSONSerializer.toJSON( str );
Map<String, Object> myMap = (Map<String, Object>) JSONObject.toBean(jsonObject, Map.class)

Solution

  • Another approach is to take advantage of the fact that a JSONObject implements java.util.Map. So, it is a map.

    import java.util.Map;
    
    import net.sf.json.JSONObject;
    
    public class Foo
    {
      static String json = "{\"one\":\"won\",\"two\":2,\"three\":false}";
    
      public static void main(String[] args)
      {
        JSONObject jsonObject = JSONObject.fromObject(json);
        Map map = jsonObject;
        System.out.println(map);
      }
    }