拼接json

String id = "10010";
String name = "tom";
String age = 50;
String str= "{\"id\":\"" + id + "\"," +
        "\"name\": \"" + name + "\"," +
        "\"age\": \"" + age + "\"}";

JSONObject object = JSON.parseObject(str);

System.out.println(object.get("name"));