使用Java API从Google Drive下载文件 [英] Using Java APIs for downloading file from the Google Drive
问题描述
我正在使用Java API来创建应用程序。但是我无法解决从驱动器下载文件的问题。
我试图使用Google Developer页面上给出的功能。 (以下链接)
https:// developers.google.com/drive/manage-downloads
然而,并没有明确提及如何为特定文件获取/生成downloadURI。我也很困惑如何使用downloadURI下载文件。
我正在使用以下功能 -
<$ (file.getDownloadUrl()!= null&&& file.getDownloadUrl())的私有静态InputStream downloadFile(驱动器服务,文件文件)
{
> length()> 0)
{
try
{
HttpResponse resp = service.getRequestFactory()。buildGetRequest
(new GenericUrl(file.getDownloadUrl()) )。执行();
return resp.getContent();
}
catch(IOException e)
{
e.printStackTrace();
返回null;
}
}
else
{
return null;
$ / code $ / pre
在这里,我无法得到什么文件应该是该函数的输入参数。
请帮助我。
在您的调用方法中,设置fileId和url位置
例如:
com.google.api.services.drive.model.File myFile =新的com.google.api.services.drive.model.File();
myFile.setDownloadUrl(https://drive.google.com/drive/u/0/folders/<encrypted_id>);
myFile.setId(< encrypted_id>);
Drive service = getDriveService(); //假设你有一个授权和获取驱动器的方法
BufferedReader br = new BufferedReader(new InputStreamReader(downloadFile(service,myFile));
....
....
...
注意:要获取您导航到该文件的url并右键单击该文件并选择获取链接
I am using the Java APIs for creating an application. However I am not able to crack the problem of downloading a file from the drive.
I am trying to use the function given on Google Developer's page. (Link below)
https://developers.google.com/drive/manage-downloads
However, it is not clearly mentioned how to get/generate downloadURI for a specific file. And also I am confused how to download the file using the downloadURI.
I am using the following function-
private static InputStream downloadFile(Drive service, File file)
{
if (file.getDownloadUrl() != null && file.getDownloadUrl().length() > 0)
{
try
{
HttpResponse resp = service.getRequestFactory().buildGetRequest
(new GenericUrl(file.getDownloadUrl())).execute();
return resp.getContent();
}
catch (IOException e)
{
e.printStackTrace();
return null;
}
}
else
{
return null;
}
}
Here I am not able to get what file should be the input parameter for the function. Please help me out.
In your calling method, set fileId and url location
eg:
com.google.api.services.drive.model.File myFile = new com.google.api.services.drive.model.File();
myFile.setDownloadUrl("https://drive.google.com/drive/u/0/folders/<encrypted_id>");
myFile.setId("<encrypted_id>");
Drive service = getDriveService(); // Assuming you have a method to authorize and get drive
BufferedReader br = new BufferedReader(new InputStreamReader(downloadFile(service,myFile));
....
....
...
Note: to get the url you navigate to the file and right click on the file and select "Get link"
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