CODEWITHSUNDEEP
java
membersound
membersound

Reputation: 86687

How to read a http file inmemory without saving on local drive?

Reading a HTTP remote file and save it to the local disk is as easy as:

org.apache.commons.io.FileUtils.copyURLToFile(new URL("http://path/to.file"), new File("localfile.txt"));

But I'd like to read a file without having to save it to the disk, just keep it in memory and read from there.

Is that possible?

Upvotes: 1

Views: 1399

Answers (4)

ed_me
ed_me

Reputation: 3508

Nice to see that you're using apache commons, you can do the following: -

final URL url = new URL("http://pat/to.tile");
final String content = IOUtils.toString(url.openStream(), "UTF-8"); // or your preferred encoding

Alternatively, you can just access the stream and do as you want with it. You don't need to use apache commons to get a String if you use an InputStreamReader, but there's no reason not to since you're already using commons-io

As others have mentioned, if you just want it in memory without processing the stream into String, just url.openStream()

Upvotes: 2

Mark
Mark

Reputation: 29119

If you are happy to introduce 3rd party libraries then OkHttp has an example that does this.

OkHttpClient client = new OkHttpClient();

String url = "http://pat/to.tile";
Request request = new Request.Builder()
  .url(url)
  .build();

Response response = client.newCall(request).execute();
String urlContent = response.body().string();

The library would also parse and make available all HTTP protocol related headers etc.

Upvotes: 0

JoGe
JoGe

Reputation: 910

You can do this like:

  public static String getContent(String url) throws Exception {
        URL website = new URL(url);
        URLConnection connection = website.openConnection();
        BufferedReader in = new BufferedReader(
                                new InputStreamReader(
                                    connection.getInputStream()));

        StringBuilder response = new StringBuilder();
        String inputLine;

        while ((inputLine = in.readLine()) != null) 
            response.append(inputLine);

        in.close();

        return response.toString();
    }

Upvotes: 0

Gianni B.
Gianni B.

Reputation: 2731

You can use java.net.URL#openStream()

InputStream input = new URL("http://pat/to.tile").openStream();
// ...

Upvotes: 4

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