Merge pull request kitodo#5954 from matthias-ronge/patch-89

Fix potential input resource leak

Kitodo/src/test/java/org/kitodo/test/utils/ProcessTestUtils.java

@@ -14,18 +14,14 @@
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;
 
-import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStream;
-import java.io.InputStreamReader;
 import java.io.OutputStream;
 import java.net.URI;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
-import java.util.List;
 import java.util.Map;
-import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
 import org.apache.logging.log4j.LogManager;
@@ -232,10 +228,7 @@ public static void updateIdentifier(int processId) throws DAOException, IOExcept
         Process process = ServiceManager.getProcessService().getById(processId);
         URI metadataFileUri = ServiceManager.getFileService().getMetadataFilePath(process);
         try (InputStream fileContent = ServiceManager.getFileService().readMetadataFile(process)) {
-            InputStreamReader inputStreamReader = new InputStreamReader(fileContent);
-            BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
-            List<String> textLines = bufferedReader.lines().collect(Collectors.toList());
-            String textContent = String.join("", textLines);
+            String textContent = new String(fileContent.readAllBytes());
             textContent = textContent.replace(ID_PLACEHOLDER, String.valueOf(processId));
             try (OutputStream updatedFileContent = ServiceManager.getFileService().write(metadataFileUri)) {
                 updatedFileContent.write(textContent.getBytes());