如何将图像上传到web (firestore) - Flutter web

dependencies:
  image_picker: ^0.8.4+4

import 'package:image_picker/image_picker.dart';

final picker = ImagePicker();

Future<void> pickImage() async {
  final pickedFile = await picker.pickImage(source: ImageSource.gallery);
  if (pickedFile != null) {
    // 上传图像到Firestore
    uploadImageToFirestore(File(pickedFile.path));
  }
}

dependencies:
  firebase_storage: ^10.0.4

import 'package:firebase_storage/firebase_storage.dart' as firebase_storage;

Future<void> uploadImageToFirestore(File imageFile) async {
  try {
    final storageRef = firebase_storage.FirebaseStorage.instance.ref();
    final imageRef = storageRef.child('images/${DateTime.now().millisecondsSinceEpoch}.jpg');
    await imageRef.putFile(imageFile);
    final imageUrl = await imageRef.getDownloadURL();
    // 将图像URL保存到Firestore中
    saveImageUrlToFirestore(imageUrl);
  } catch (e) {
    print('上传图像失败：$e');
  }
}

dependencies:
  cloud_firestore: ^3.1.7

import 'package:cloud_firestore/cloud_firestore.dart';

Future<void> saveImageUrlToFirestore(String imageUrl) async {
  try {
    final collectionRef = FirebaseFirestore.instance.collection('images');
    await collectionRef.add({'url': imageUrl});
    print('图像URL保存到Firestore成功');
  } catch (e) {
    print('保存图像URL到Firestore失败：$e');
  }
}