Enhance: Object -> JSONObject 변환 기능 추가

src/main/java/com/innohotsource/hotjson/Json/ObjectToJson.java

@@ -0,0 +1,66 @@
+package com.innohotsource.hotjson.Json;
+
+import org.json.simple.*;
+
+import java.lang.reflect.Field;
+
+public class ObjectToJson {
+
+    public static JSONObject toJson(Object obj) throws IllegalAccessException {
+        JSONObject jsonObject = new JSONObject();
+        return toJson(obj, jsonObject);
+    }
+
+    private static JSONObject toJson(Object obj, JSONObject map) throws IllegalAccessException {
+        Class<?> clazz = obj.getClass();
+        Field[] fields = clazz.getDeclaredFields();
+        for (Field field : fields) {
+            field.setAccessible(true);
+            String key = field.getName();
+            // Object 인 경우 || String, Wrapper Type 인 경우 || Array 인 경우??? 여튼 조건이 필요하다
+            Object value = field.get(obj);
+
+            if(value instanceof String){
+                map.put(key, value.toString());
+                continue;
+            }
+
+            if(value instanceof Double){
+                if(((Double)value).isInfinite() || ((Double)value).isNaN())
+                    map.put(key, "null");
+                else
+                    map.put(key, value);
+                continue;
+            }
+
+            if(value instanceof Float){
+                if(((Float)value).isInfinite() || ((Float)value).isNaN())
+                    map.put(key, "null");
+                else
+                    map.put(key, value);
+                continue;
+            }
+
+            if(value instanceof Number){
+                map.put(key, value);
+                continue;
+            }
+
+            if(value instanceof Boolean){
+                map.put(key, value);
+                continue;
+            }
+
+            // Arr 혹은 List 인지 확인하고 처리하는 로직? 아마도 필요할 것 같음...
+
+            if(value instanceof Object){
+                JSONObject newMap = toJson(value);
+                map.put(key, newMap);
+            }
+
+        }
+
+        return map;
+    }
+
+}