dart json转换成字符串数组 final responseBody = json.decode(response.body); print(responseBody); bool status = responseBody['status']; if (status) { final responseBody = json.decode(response.body); var data = responseBody['data']; List<String> stringList = (data as List<dynamic>).cast<String>(); return stringList; } 1. 2. 3. 4....
import'dart:convert';import'package:dart_demo1/json/json_model.dart';/// 将实体类对象解析成json字符串StringgeneratePlatformJson({Stringkey,Stringvalue}) {JsonModelDemojsonModelDemo =newJsonModelDemo(); jsonModelDemo.key= key; jsonModelDemo.value= value;StringjsonStr =jsonEncode(jsonModelDemo);...
void main() { String jsonString = '[{"name": "Alice", "age": 25}, {"name": "Bob", "age": 30}]'; List<dynamic> jsonList = json.decode(jsonString); List<Person> personList = jsonList.map((json) => Person.fromJson(json)).toList(); for (var person in personList) { prin...
String responseString = utf8decoder.convert(utf8codec.encode(jsonString)); // 将 json 字符串信息转为 Map<String, dynamic> 类型的键值对信息 Map<String, dynamic> jsonMap = json.decode(responseString); // 使用工厂方法构造 Dart 对象 CommonModel commonModel = CommonModel.fromJson(jsonMap); prin...
在上述示例中,我们首先定义了一个包含JSON数据的字符串jsonString。然后,使用jsonDecode函数将其解析为一个动态类型的列表jsonList。接下来,我们可以遍历列表中的每个元素,并访问其属性。 对于这个问答内容,我们可以给出以下完善且全面的答案: 概念:从Dart中的JSON调用返回列表是指在Dart编程语言中,通过调用JSON数据并将...
我们用一个简单的Dart版的HttpServer作为典型长周期应用的测试用例,该用例中有JsonToObject、ObjectToJson的转换,然后response输出。我们分别用Source、Kernel以及AppJIT的方式在一定的并发量下运行一段时间 void processReq(HttpRequest request){ try{ final List<Map<String,dynamic>> buf = <Map<String,dynamic>>...
十、JSON的转换 import 'dart:convert' as convert; void main() { List list = [{'a': 1}]; String listString = convert.jsonEncode(list); print(listString); // [{"a":1}] String类型 print(listString is String); // true List aa = convert.jsonDecode(listString); print(aa); //[...
}voidmain() {finaljsonString =""" { "persons" : [ { "name" : "Joe", "age" : 12 } ] } """;finalo = Persons.fromJson(jsonDecode(jsonString)asMap<String,dynamic>);print(o);finals = jsonEncode(o);print(s);finals2 = JsonEncoder.withIndent(" ").convert(o);print(s2); ...
>getAnchors() async {//1.读取json文件String jsonString = await rootBundle.loadString("assets/yz.json");//2.转成List或Map类型final jsonResult =json.decode(jsonString);//3.遍历List,并且转成Anchor对象放到另一个List中List<Anchor> anchors =new List();for(Map<String, dynamic> mapinjsonResult...
import'dart:convert';import'package:dartson/dartson.dart';import'package:some_dependency/some_class.dart';import'my_class.dart';@Serializer( entities:[MyClass,SomeClass, ], )finalDartson<String> serializer=_serializer$dartson.useCodec(json); ...