ExcelUtility Jira issue BAEL-5198 (#11503)

* CODE REFACTOR AND ADDED UNIT TEST * SMALL CHANGE * FIXED TESTS TIMEZONE ISSUES Co-authored-by: Olsi Seferi <olsi.seferi@sisal.al>
2021-12-01 19:19:19 +01:00
parent 01ff175f5d
commit 36866c09f7
3 changed files with 120 additions and 0 deletions
@@ -0,0 +1,66 @@
+package com.baeldung.poi.excel;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+
+import org.apache.poi.ss.usermodel.Cell;
+import org.apache.poi.ss.usermodel.CellType;
+import org.apache.poi.ss.usermodel.DateUtil;
+import org.apache.poi.ss.usermodel.Row;
+import org.apache.poi.ss.usermodel.Sheet;
+import org.apache.poi.ss.usermodel.Workbook;
+import org.apache.poi.xssf.usermodel.XSSFWorkbook;
+
+public class ExcelUtility {
+	private static final String ENDLINE = System.getProperty("line.separator");
+
+	public static String readExcel(String filePath) throws IOException {
+		File file = new File(filePath);
+		FileInputStream inputStream = null;
+		StringBuilder toReturn = new StringBuilder();
+		try {
+			inputStream = new FileInputStream(file);
+			Workbook baeuldungWorkBook = new XSSFWorkbook(inputStream);
+			for (Sheet sheet : baeuldungWorkBook) {
+				toReturn.append("--------------------------------------------------------------------").append(ENDLINE);
+				toReturn.append("Worksheet :").append(sheet.getSheetName()).append(ENDLINE);
+				toReturn.append("--------------------------------------------------------------------").append(ENDLINE);
+				int firstRow = sheet.getFirstRowNum();
+				int lastRow = sheet.getLastRowNum();
+				for (int index = firstRow + 1; index <= lastRow; index++) {
+					Row row = sheet.getRow(index);
+					toReturn.append("|| ");
+					for (int cellIndex = row.getFirstCellNum(); cellIndex < row.getLastCellNum(); cellIndex++) {
+						Cell cell = row.getCell(cellIndex, Row.MissingCellPolicy.CREATE_NULL_AS_BLANK);
+						printCellValue(cell, toReturn);
+					}
+					toReturn.append(" ||").append(ENDLINE);
+				}
+			}
+			inputStream.close();
+
+		} catch (IOException e) {
+			throw e;
+		}
+		return toReturn.toString();
+	}
+
+	public static void printCellValue(Cell cell, StringBuilder toReturn) {
+		CellType cellType = cell.getCellType().equals(CellType.FORMULA) ? cell.getCachedFormulaResultType()
+				: cell.getCellType();
+		if (cellType.equals(CellType.STRING)) {
+			toReturn.append(cell.getStringCellValue()).append(" | ");
+		}
+		if (cellType.equals(CellType.NUMERIC)) {
+			if (DateUtil.isCellDateFormatted(cell)) {
+				toReturn.append(cell.getDateCellValue()).append(" | ");
+			} else {
+				toReturn.append(cell.getNumericCellValue()).append(" | ");
+			}
+		}
+		if (cellType.equals(CellType.BOOLEAN)) {
+			toReturn.append(cell.getBooleanCellValue()).append(" | ");
+		}
+	}
+}