Java code to the download the file with byte data using box

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October 08, 2018 02:09

Hi Team,

We will upload 5GB data into the box and when we download that 5GB it might take time by the developer token will expire or some network issues while downloading.

Could you please help to provide the java code snippet to download the file with byte data and read the outstream data which was downloaded consists of actual file data.

Thanks & Regards,

Kalyan

Comments

4 comments

cary

October 08, 2018 18:34
Hey ,

If you are using the Java SDK you can take a look here to see all functions you can perform including upload and download

As far as downloading a file though, this should work:
```
BoxFile file = new BoxFile(api, "id");
BoxFile.Info info = file.getInfo();

FileOutputStream stream = new FileOutputStream(info.getName());
file.download(stream);
stream.close();
```
However a developer token cannot be refreshed. If you wish to refresh your token I would suggest either JWT or Oauth 2.0, instructions for both can be found here.

Before we dive deeper into those, I am curious as to what your use case is? From there we can determine which type of auth is best suited for your needs.

Please let us know, thanks!
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kalyanch

October 08, 2018 20:45
Hi Cary,
To our business requirement, we have huge assets in box to download/upload to another server.
we do have multi-part upload while we do upload assets in box, do we have any multi-part download option which gives faster response when we do it via box-api and programatically.
if we don't have multi-download option available, will it leads us to a connectivity issue during huge asset downloading when we do it via box-api? is there way to get status/flag upon downloading assets/failures/success from box ?

Thanks,
Kalyan.
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cary

October 09, 2018 16:56
Hey ,

If network connectivity is an potential issue I would recommend taking a look at the `downloadRange()` functions and its overloads in the `BoxFile` class seen here.

This function will allow you to download a file's contents while specifying the range in bytes. If anything were to happen you can then start downloading again from that specified range where you left off. This will allow you to download your large content in discrete chunks.
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Abdul Rahiman

October 17, 2023 06:35
When working with bytes data that I want to convert to a string in Python, how do I determine the correct encoding to use for the conversion? Is there a recommended approach or a method to identify the encoding?
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