Added File Reader

buisnesslogic/src/main/java/com/plannaplan/configutils/FileReader.java

@@ -0,0 +1,55 @@
+package com.plannaplan.configutils;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Hashtable;
+import java.util.Iterator;
+
+import org.apache.poi.xssf.usermodel.XSSFSheet;
+import org.apache.poi.xssf.usermodel.XSSFWorkbook;
+import org.apache.poi.ss.usermodel.Cell;
+import org.apache.poi.ss.usermodel.Row;
+import com.plannaplan.models.FileData;
+
+public class FileReader {
+
+    private InputStream fileInputStream;
+
+    public FileReader(InputStream fileInputStream) {
+        this.fileInputStream = fileInputStream;
+    }
+
+    public FileData read() {
+
+        FileData result = null;
+
+        try {
+            InputStream fis = this.fileInputStream;
+            XSSFWorkbook workbook = new XSSFWorkbook(fis);
+            XSSFSheet sheet = workbook.getSheetAt(0);
+
+            Iterator<Row> rowIt = sheet.iterator();
+
+            Row row = rowIt.next();
+            Iterator<Cell> cellIt = row.cellIterator();
+
+            Hashtable<String, Integer> keys = new Hashtable<>();
+            int index = 0;
+            while (cellIt.hasNext()) {
+                Cell c = cellIt.next();
+                keys.put(c.toString(), index);
+            }
+
+            rowIt.remove();
+            result = new FileData(keys, rowIt);
+            workbook.close();
+            fis.close();
+
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+
+        return result;
+    }
+
+}