JSON和实体类,LIst互相转换

1.实体类转JSON

1.1fastjson

String json = JSONObject.toJSONString(resultData);
System.err.println(json);
JSONObject jsonObject = JSON.parseObject(json);
System.err.println(jsonObject.get("message"));
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1.2GSON

Gson gson = new Gson();
String str = gson.toJson(resultData);
System.err.println(str);
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2.JSON转实体类

2.1fastjson

ResultData resultData = json.toJavaObject(ResultData.class);
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2.2Gson

BoTaskPlan bo = new Gson().fromJson(json.toString(),BoTaskPlan.class);
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3.List转JSON

3.1fastjson

JSONArray array = JSONArray.parseArray(JSON.toJSONString(list));
System.err.println(array);
JSONObject json = (JSONObject) array.get(0);
System.err.println(json);
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3.2Gson

Gson gson = new Gson();
String str = gson.toJson(list);
System.err.println(str);
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4.JSON转List

4.1fastjson

JSONArray array = JSONArray.parseArray(JSON.toJSONString(list));
System.err.println(array);
List<Map> list2 = array.toJavaList(Map.class);
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4.2Gson

List<Student> arrayList = new ArrayList<>();
arrayList = gson.fromJson(str, new TypeToken<List<Student>>() {}.getType());
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