Question

我无法在我成功上传到Google云端硬盘的文件上设置阅读权限。

此外，我想获取URL链接以公开分享。

我不知道为什么我不应该有权更改权限。

An error occurred: com.google.api.client.googleapis.json.GoogleJsonResponseException: 403 Forbidden
{
  "code" : 403,
  "errors" : [ {
    "domain" : "global",
    "message" : "Insufficient permissions for this file",
    "reason" : "forbidden"
  } ],
  "message" : "Insufficient permissions for this file"
}

到目前为止我的代码：

public class FilesUploader {


public static void uploadNow(Drive service) {

   //...
   String fileId = insertFile(service, f.getName(),  f.getName());

   if (fileId != null) {

      List<Permission> permissionList = retrievePermissions(service, fileId);
      for (Permission p : permissionList) {
        printPermission(service, fileId, p.getId());
        updatePermission(service, fileId, p.getId(), "reader");
        }
      }
    } 

}

/**
 * https://developers.google.com/drive/v2/reference/permissions/update
 */
private static Permission updatePermission(Drive service, String fileId,
                                           String permissionId, String newRole) {
    try {
        // First retrieve the permission from the API.
        Permission permission = service.permissions().get(
                fileId, permissionId).execute();
        permission.setRole(newRole);
        return service.permissions().update(
                fileId, permissionId, permission).execute();
    } catch (IOException e) {
        System.out.println("An error occurred: " + e);
    }
    return null;
}


/**
 * https://developers.google.com/drive/v2/reference/files/insert
 */
private static String insertFile(Drive service, String title, String filename) {
    // File's metadata.
    File body = new File();
    body.setTitle(title);


    // File's content.
    java.io.File fileContent = new java.io.File(filename);
    FileContent mediaContent = new FileContent("", fileContent);
    try {
        File file = service.files().insert(body, mediaContent).execute();


        System.out.println("File ID: " + file.getId());

        return file.getId();
    } catch (Exception e) {
        e.printStackTrace();
        System.out.println("An error occured: " + e);
    }
    return null;
}

/**
 * https://developers.google.com/drive/v2/reference/permissions/get
 */
private static void printPermission(Drive service, String fileId,
                                    String permissionId) {
    try {
        Permission permission = service.permissions().get(
                fileId, permissionId).execute();


        System.out.println("Name: " + permission.getName());
        System.out.println("Role: " + permission.getRole());

    } catch (IOException e) {
        System.out.println("An error occured: " + e);
    }
}

/**
 * https://developers.google.com/drive/v2/reference/permissions/list
 */
private static List<Permission> retrievePermissions(Drive service,
                                                    String fileId) {
    try {
        PermissionList permissions = service.permissions().list(fileId).execute();
        return permissions.getItems();
    } catch (IOException e) {
        System.out.println("An error occurred: " + e);
    }

    return null;
}

}

Answer 1

找到解决方案

insertPermission(service, fileId, "anyone", "reader");
System.out.println(  file.getWebContentLink());

private static Permission insertPermission(Drive service, String fileId,
                                               String type, String role) {
        Permission newPermission = new Permission();

//        newPermission.setValue(value);
        newPermission.setType(type);
        newPermission.setRole(role);
        try {
            return service.permissions().insert(fileId, newPermission).execute();
        } catch (IOException e) {
            System.out.println("An error occurred: " + e);
        }
        return null;
    }

上传文件公开获取下载链接

1 个答案: