如何将JsonObject转换为String以存储在Servlet的会话中？

Question

How to convert JsonObject to String for store in session in servlet?

JSONObject jSONObject = new JSONObject();

jSONObject.put("user", rs.getString("user").toString());
jSONObject.put("pass", rs.getString("pass").toString());

Answer 1

You can simply use

jSONObject.string();

but if this way doesn't satisfy your needs you can use the following way to convert json object to json string you can use this library in your build gradle

compile 'com.google.code.gson:gson:2.7'

and in your code:

String string = new Gson().toJson(jSONObject );