Package ru.vyarus.dropwizard.guice.test.client.util

Class FileDownloadUtil

java.lang.Object

ru.vyarus.dropwizard.guice.test.client.util.FileDownloadUtil

public final class FileDownloadUtil
extends Object

File download from response utility.

Since:

09.10.2025

Method Summary

Modifier and Type	Method	Description
static Path	download(jakarta.ws.rs.core.Response response, Path dir)	Download a file from the response.
static @Nullable String	parseFileName(jakarta.ws.rs.core.Response response)	Less accurate version of readFilename(Response) with simplified header parsing.
static String	parseFileName(String header)	Less accurate version of readFilename(Response) with simplified header parsing.
static @Nullable String	readFilename(jakarta.ws.rs.core.Response response)	Use jersey header parser when the multipart jar is available.
static Path	saveFile(String name, InputStream input, Path dir)	Save file from input stream to target directory.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

download

public static Path download(jakarta.ws.rs.core.Response response,
 Path dir)

Download a file from the response.

Limitation: does not support multipart responses. Use parseFileName(String) and saveFile(String, InputStream, Path) manually directly for multipart chunks.

Parameters:

response - response object

dir - target directory to save the file in

Returns:

downloaded ile

saveFile

public static Path saveFile(String name,
 InputStream input,
 Path dir)

Save file from input stream to target directory. If a file with the same name already exists, an index will be added to the name.

Parameters:

name - file name (could be without extension)

input - file input stream

dir - target directory

Returns:

downloaded file

readFilename

public static @Nullable String readFilename(jakarta.ws.rs.core.Response response)

Use jersey header parser when the multipart jar is available. Otherwise, fallback to less accurate manual parsing.

Parameters:

response - response object to read header from

Returns:

file name from content-disposition header or null if header not found

parseFileName

public static @Nullable String parseFileName(jakarta.ws.rs.core.Response response)

Less accurate version of readFilename(Response) with simplified header parsing. Used when the multipart jar is not available (and so jersey native parsing can't be used).

Parameters:

response - response object to read header from

Returns:

file name from content-disposition header or null if header not found

parseFileName

public static String parseFileName(String header)

Less accurate version of readFilename(Response) with simplified header parsing. Used when the multipart jar is not available (and so jersey native parsing can't be used).

Parameters:

header - content-disposition header

Returns:

parsed file name