我可以解码来自服务器的响应,但我不知道这是什么错误:\ 以下是我在showproduct类中的请求代码: if (response.statusCode == 200) {
setState(() {
var bodybytedecoded= jsonDecode(utf8.decode(response.bodyBytes));
final product= ProductModel.fromJson(bodybytedecoded); // console shows error come from this line
print(pr
我想解析一个由数组组成的复杂JSON API,它显示了以下错误。API有天气的详细信息,我想在控制台中显示时间和波高。
错误
E/flutter ( 5675): [ERROR:flutter/lib/ui/ui_dart_state.cc(186)] Unhandled Exception: type '_InternalLinkedHashMap<String, dynamic>' is not a subtype of type 'List<dynamic>'
E/flutter ( 5675): #0 _JsonDem
我正在尝试从Java中的json刺中提取属性,并编写了一个JsonDeseriizer来实现它。
我的尝试如下:
public class testJacksonSimple {
@JsonDeserialize(using = ItemDeserializerJson.class)
public static class Item {
public int id;
public String itemName;
public Item(){};
public Item(int id, String itemNa
我正在尝试使用Flutter/Dart与Java Netty服务器通信。我在Java端使用Gson,在Flutter端使用json_annotation和/或手动序列化JSON方法。它们都使用UTF8。问题是我使用了这个语法:
{
"ENCRYPT": false, // to use to check if the packet is encrypted
"jsonObject": {} // The packet class. This gets encrypted if it ENCRYPT = true
"packetIdentifi
谁能告诉我如何在flutter中解析对象数组的数组?当我解析json时,我得到的错误是type List<dynamic> is not a subtype of type Map<String, dynamic>. 我正在尝试从API中获取要在屏幕上显示的数据,以便稍后构建一个GridView来显示所有产品及其各自的价格。 我从flutter文档中复制了大部分代码:https://flutter.dev/docs/cookbook/networking/fetch-data 这是到接口的链接:https://fakestoreapi.com/products/cat
const someFunction = () = {
...
const { data, setData, activeIndex, setActiveIndex } = useContext(MusicContext);
useEffect(() => {
console.log(" useEffect called");
// another component called setData or setActiveIndex which resulted here
// how to compare data
我有一个从java项目中生成的webservice (wsdl)。它的输出正在成为json格式。像这样的[{"pid":163686,"chartno":null,"lName":"Bec&&kwith","fName":"Burt","mName":null,"line1":"312 HILL ROAD","line2":null,"city":"Hillsboro","stat