Javascript Expo firebase 7.9.0 can';无法下载URL
我的方法确实成功地将图像从expo加载到firebase存储,但我似乎无法获得下载URLJavascript Expo firebase 7.9.0 can';无法下载URL,javascript,firebase,react-native,expo,firebase-storage,Javascript,Firebase,React Native,Expo,Firebase Storage,我的方法确实成功地将图像从expo加载到firebase存储,但我似乎无法获得下载URL const uploadImage = async (uri) => { const uniqid = () => Math.random().toString(36).substr(2, 9); const ext = uri.split('.').pop(); // Extract image extension const filename = `${uniqid()}.${ext}`;
const uploadImage = async (uri) => {
const uniqid = () => Math.random().toString(36).substr(2, 9);
const ext = uri.split('.').pop(); // Extract image extension
const filename = `${uniqid()}.${ext}`; // Generate unique name
const response = await fetch(uri);
const blob = await response.blob();
var ref = firebase
.storage()
.ref()
.child('images/' + filename);
ref.getDownloadURL().then((url) => console.log(url));
return ref.put(blob);
})
这是我得到的错误
FirebaseStorageError {
“代码”:“未找到存储/对象”,
“消息”:“Firebase存储:对象‘images/gebwu7tnh.jpg’不存在。”,
“名称”:“FirebaseError”,
“服务器响应”:{
“错误”:{
“代码”:404,
“消息”:“未找到。无法获取对象”,
“状态”:“获取对象”
}
}“这是我发现的帮助我进行研究的东西。我确实重构了我的firebase以使用更高阶的组件。这是我的firebase方法
uploadImageAsync: async (uri) => {
const uniqid = () => Math.random().toString(36).substr(2, 9);
const ext = uri.split('.').pop(); // Extract image extension
const filename = `${uniqid()}.${ext}`; // Generate unique name
const ref = firebase
.storage()
.ref()
.child('images/' + filename);
const blob = await new Promise((resolve, reject) => {
const xhr = new XMLHttpRequest();
xhr.onload = function () {
resolve(xhr.response);
};
xhr.onerror = function (e) {
console.log(e);
reject(new TypeError('Network request failed'));
};
xhr.responseType = 'blob';
xhr.open('GET', uri, true);
xhr.send(null);
});
const snapshot = await ref.put(blob);
blob.close();
const imgUrl = await snapshot.ref.getDownloadURL();
console.log(imgUrl);
return imgUrl;
},,
};
下面是我如何在我的组件中实现它
const setImage = async (uri) => {
try {
return await firebase.uploadImageAsync(uri);
} catch (error) {
console.log(error);
}
}) 您的代码似乎为文件名生成了一个唯一的ID,然后尝试确定该ID的下载URL。Firestore存储中似乎不太可能存在该唯一ID的文件,这就是您收到错误消息的原因。谢谢frank,您是对的,我确实找到了解决方案,我将很快发布