我正在尝试在flutter项目中使用firebase实时数据库API。尽管通过http包中的addProduct包向API发出POST请求，但总是在import 'package:scoped_model/scoped_model.dart';
import 'package:http/http.dart' as http;
import 'dart:convert';
import '../models/product.dart';
class ProductsModel extends Model{
final String base_url = 'https://PROJECT_ID.firebaseio.com/';
List<Product> _products = [];
int _selectedProductIndex;
bool _showFavorites = false;
List<Product> get products {
return List.from(_products);
}
List<Product> get displayedProducts {
return List.from(_products.where((Product p){
return p.isFavorite == _showFavorites;
}));
}
int get selectedProductIndex{
return _selectedProductIndex;
}
Product get selectedProduct{
return _selectedProductIndex == null ? null : _products[_selectedProductIndex];
}
bool get displayFavoritesOnly{
return _showFavorites;
}
void addProduct(Product product) {
final Map<String, dynamic> productData = {
'title': product.title,
'description': product.description,
'price': product.price,
'imageUri': "http://lorempixel.com/640/480/food",
'userEmail': product.userEmail,
'userId': product.userId
};
var data = jsonEncode(productData);
http.post('https://flutter-course-36df8.firebaseio.com/' + 'products.josn',
body: data, headers: {
"Accept": "application/json",
}).then((http.Response response){
// final Map<String, dynamic> d = json.decode(response.body);
print(response.statusCode);// always prints 404
print('test');
_products.add(product);
_selectedProductIndex = null;
});
}
void deleteProduct(){
_products.removeAt(_selectedProductIndex);
_selectedProductIndex = null;
}
void updateProduct(Product product){
_products[_selectedProductIndex] = product;
_selectedProductIndex = null;
}
void selectProduct(int index){
_selectedProductIndex = index;
notifyListeners();
}
void toggleProductFavoriteStatus(){
final bool isCurrentlyFavorite = selectedProduct.isFavorite;
final bool newFavoriteStatus = ! isCurrentlyFavorite;
final Product updatedProduct = Product(
title: selectedProduct.title,
description: selectedProduct.description,
price: selectedProduct.price,
imageUri: selectedProduct.imageUri,
userEmail: selectedProduct.userEmail,
userId: selectedProduct.userId,
isFavorite: newFavoriteStatus
);
_products[_selectedProductIndex] = updatedProduct;
_selectedProductIndex = null;
notifyListeners();
}
void toggleDisplayMode(){
_showFavorites = ! _showFavorites;
notifyListeners();
}
}
方法中返回状态代码404，但奇怪的是，当使用同一API Url通过Postman发出POST请求时有用。我不知道问题出在哪里。任何帮助，将不胜感激。
我发出POST请求的模型类
DSL.field(Name)