相关疑难解决方法(0)

使用Google云端存储,我想向客户端提供必要的信息以进行可恢复的上传.这可能吗？

我正在尝试使用以下代码从 Google Cloud 生成下载和上传链接，以查看和上传文件：

public class Test {

public static void main(String[] args) throws IOException {
Storage storage = StorageOptions.newBuilder().setCredentials(
    ServiceAccountCredentials.fromStream(new FileInputStream("C:/cred/Key.json")))
    .build()
    .getService();

String filePath = "file/path/";
File file = new File(filePath);
byte[] bytes = Utilities.fileToByteArray(file);
String mimeType = Utilities.getMimeType(bytes);
BlobId blobId = BlobId.of("bucket", file.getName());
BlobInfo blobInfo = BlobInfo.newBuilder(blobId).setContentType(mimeType).build();
URL urlGet = storage
    .signUrl(BlobInfo.newBuilder("bucket", "object").build(), 1, TimeUnit.HOURS,
        SignUrlOption.httpMethod(HttpMethod.GET));
URL urlPut = storage
    .signUrl(blobInfo, 1, TimeUnit.DAYS, SignUrlOption.httpMethod(HttpMethod.PUT),
        SignUrlOption.withContentType());
System.out.println(urlGet);
System.out.println(urlPut);
  }

}

urlGet包含下载链接并urlPut包含上传链接。当我运行该程序时，我得到以下输出：

https://storage.googleapis.com/roshanbucket/jasperviewpdf?GoogleAccessId=myservice@deft-idiom-234709.iam.gserviceaccount.com&Expires=1552986620&Signature=OZl6M4uMkigu6JBMYoDumgs8P4EC%2BtcK44zHMPkG2xzq3hFfsrj8YYRRtajI8diz64vdCX54nct3wuEpXNRwcnzCmq4KdD53%2B8gbERNuttm8K6%2BlZDLGF3wng%2BCSMzghbGbLnYaZRiZbvjCG%2B3ObBUg9ZiY0qRlif9nyGFftsGUF9GGHvHP6HWP51DJOAurGytSjf9SA5HKPOw4e%2B%2BP1LltfI7m3WjWhxwnSYz4lVxcR4eksec7ILTi66jnwu1gxXtqp75XTxLp9vQa6RC4dCPGoTridFQcMqm89TVzf58c8krk7apQCR6TWp2tAWuFr2xJ1U5FwFfiBaoSX4A33rw%3D%3D

https://storage.googleapis.com/roshanbucket/pi.jpg?GoogleAccessId=myservice@deft-idiom-234709.iam.gserviceaccount.com&Expires=1553069420&Signature=YHsGTgXIBum9t5M7U%2F9fdibDvzBKttQGh0jxzbYgJkevQbpOh8gRQYOlHdjT86byobDE5TNEGF5VrGFAtI5rhRGxLw0xqcNT%2BYGfvHxAIfAJXy5ormXxWVnVEnwGMafyVLOtdIY4asa0niFu%2B36eaIqtD5UzsjUY%2F18OW%2FwvjfQmhlmsvJ7qSkfD1Oif5Rv6c%2F67z1zT7gz7rB4gTCG6mLALuRrOIwCPO%2BkyzOxP9PhEJkoB7j446v%2BhE%2F0pt0wM2nJ29%2BK3HRUShhccJzzZ%2BZRxgOXeUL44CsnYlssaTThU%2FztyUbsXWXbs2hroTcFxVVtOp7aGeCUs1qjdJkXaEg%3D%3D

当我单击第一个链接（即下载）时，它会毫无问题地呈现存储桶中的文件，但是当我使用第二个链接将文件从我的计算机上传到 Google …