一、net.sf.json.JSONObject

JSONObject轉(zhuǎn)VO/bean

• 參考文檔 http://json-lib.sourceforge.net/apidocs/jdk15/net/sf/json/JSONObject.html

二、org.json.JSONObject

• 參考文檔 https://stleary.github.io/JSON-java/org/json/JSONObject.html

三、fastJSON

• 參考文檔 https://stleary.github.io/JSON-java/org/json/JSONObject.html

四、json與Null

org.json.JSONObject orgJSON = new org.json.JSONObject();
// The method put(String, Collection) is ambiguous for the type JSONObject
//orgJSON.put("null", null);
net.sf.json.JSONObject netJSON = new net.sf.json.JSONObject();
netJSON.put("null", null);

System.out.println("netJSON" + netJSON); // 控制臺輸出 : netJSON{}