Java與Json資料格式轉換

1. List集合轉換成json程式碼

List list = new ArrayList();
list.add( "first" );
list.add( "second" );
JSONArray jsonArray2 = JSONArray.fromObject( list );

2. Map集合轉換成json程式碼

Map map = new HashMap();
map.put("name", "json");
map.put("bool", Boolean.TRUE);
map.put("int", new Integer(1));
map.put("arr", new String[] { "a", "b" });
map.put("func", "function(i){ return this.arr[i]; }");
JSONObject json = JSONObject.fromObject(map);

3. Bean轉換成json程式碼

JSONObject jsonObject = JSONObject.fromObject(new JsonBean());

4. 陣列轉換成json程式碼

boolean[] boolArray = new boolean[] { true, false, true };
JSONArray jsonArray1 = JSONArray.fromObject(boolArray);

5. 一般資料轉換成json程式碼

<span style="font-size:14px;">JSONArray jsonArray3 = JSONArray.fromObject("['json','is','easy']" );</span>