要使用Apollo-upload-client和Cloudinary进行文件上传,你需要执行以下步骤:
npm install apollo-upload-client cloudinary
import { ApolloClient, InMemoryCache } from '@apollo/client';
import { ApolloUploadClient } from 'apollo-upload-client';
const uploadLink = new ApolloUploadClient({
uri: 'Your GraphQL endpoint URL',
});
const client = new ApolloClient({
link: uploadLink,
cache: new InMemoryCache(),
});
import React, { useState } from 'react';
import { useMutation } from '@apollo/client';
import { gql } from '@apollo/client/core';
import { Cloudinary } from 'cloudinary-core';
const UPLOAD_IMAGE = gql`
mutation uploadImage($file: Upload!) {
uploadImage(file: $file) {
publicId
secureUrl
}
}
`;
const cloudinary = new Cloudinary({ cloud_name: 'Your Cloudinary cloud name' });
const UploadImage = () => {
const [file, setFile] = useState(null);
const [uploadImage] = useMutation(UPLOAD_IMAGE);
const handleFileChange = (event) => {
setFile(event.target.files[0]);
};
const handleUpload = async () => {
const formData = new FormData();
formData.append('file', file);
try {
const { data } = await uploadImage({
variables: { file: formData },
});
const { publicId, secureUrl } = data.uploadImage;
// 使用Cloudinary SDK进行进一步的处理或显示上传的图像
const cloudinaryImage = cloudinary.image(publicId);
console.log(cloudinaryImage);
} catch (error) {
console.error(error);
}
};
return (
);
};
export default UploadImage;
在上面的代码中,你需要将Your GraphQL endpoint URL
替换为你的GraphQL API的URL,将Your Cloudinary cloud name
替换为你的Cloudinary云名称。
在handleUpload
函数中,我们首先创建一个FormData对象,并将文件附加到其中。然后,我们使用uploadImage
mutation来上传文件,并从响应中获取上传后的图像的公共ID和安全URL。最后,我们使用Cloudinary SDK创建一个Cloudinary图像对象,你可以进一步处理或在应用中显示该图像。
现在你可以在你的应用中使用
组件来处理文件上传了。