删除文件

本SDK提供DeleteObjectsCommand类和HeadObjectCommand类实现文件删除。完整代码详见 GithubDeleteObjectsCommand调用的 S3 API 为 DeleteObjects, 具体参见DeleteObjects API 文档HeadObjectCommand调用的 S3 API 为 HeadObject, 具体参见HeadObject API 文档

参数说明

  • Bucket: 文件所在的存储空间
  • Key: 文件在存储空间内的名称

示例

执行该示例前请确保配置文件的正确性
以下代码段需要在上下文中运行

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function DeleteObjects() {
    const [bucketName, setBucketName] = useState("");
    const [objectKeys, setObjectKeys] = useState("");
    const [deleteStatus, setDeleteStatus] = useState("");

    const checkObjectExists = async (key) => {
        try {
            await s3.send(new HeadObjectCommand({ Bucket: bucketName, Key: key }));
            return true;
        } catch (err) {
            if (err.name === 'NotFound') {
                return false;
            } else {
                throw err;
            }
        }
    };

    const handleDelete = async () => {
        const keysArray = objectKeys.split(",").map(key => key.trim());

        try {
            const existingKeys = [];
            for (const key of keysArray) {
                const exists = await checkObjectExists(key);
                if (exists) {
                    existingKeys.push({ Key: key });
                }
            }
            if (existingKeys.length === 0) {
                setDeleteStatus("没有找到可删除的对象");
                              return;
            }
            const deleteParams = {
                Bucket: bucketName,
                Delete: {
                    Objects: existingKeys,
                },
            };

            const command = new DeleteObjectsCommand(deleteParams);
            const response = await s3.send(command);
            setDeleteStatus(`成功删除 ${response.Deleted.length} 个对象. 删除对象: ${response.Deleted.map(d => d.Key).join(", ")}`);
        } catch (err) {
            console.error("删除文件失败:", err);
            setDeleteStatus("删除对象失败");
        }
    };