Aggiunto extractZipFile

ems-core/src/main/java/it/integry/ems_model/utility/UtilityZip.java

@@ -4,6 +4,7 @@ import it.integry.ems.response.FileItem;
 import org.apache.commons.io.FilenameUtils;
 
 import java.io.*;
+import java.util.ArrayList;
 import java.util.List;
 import java.util.zip.*;
 
@@ -131,4 +132,26 @@ public class UtilityZip {
 
         return outputStream.toByteArray();
     }
+
+    public static List<byte[]> extractZipFile(byte[] zipFile) throws Exception {
+        List<byte[]> extractedFiles = new ArrayList<>();
+        ByteArrayInputStream inputStream = new ByteArrayInputStream(zipFile);
+        ZipInputStream zipInputStream = new ZipInputStream(inputStream);
+
+        while (zipInputStream.getNextEntry() != null) {
+            ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
+            byte[] buffer = new byte[1024];
+            int len;
+            while ((len = zipInputStream.read(buffer)) > 0) {
+                outputStream.write(buffer, 0, len);
+            }
+            extractedFiles.add(outputStream.toByteArray());
+            zipInputStream.closeEntry();
+            outputStream.close();
+        }
+
+        zipInputStream.close();
+        inputStream.close();
+        return extractedFiles;
+    }
 }