Merge pull request #15404 from wynnteo/BAEL-7278

BAEL-7278 first draft
2023-12-19 22:55:48 +01:00 · 2023-12-19 22:55:48 +01:00 · af2476da3a
commit af2476da3a
parent 64a66af3fc 1d9a0246fe
4 changed files with 303 additions and 0 deletions
--- a/pdf-2/pom.xml
+++ b/pdf-2/pom.xml
@ -35,6 +35,21 @@
            <artifactId>pdfbox</artifactId>
            <version>${pdfbox.version}</version>
        </dependency>
+        <dependency>
+            <groupId>org.apache.poi</groupId>
+            <artifactId>poi-ooxml</artifactId>
+            <version>${poi-ooxml.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.logging.log4j</groupId>
+            <artifactId>log4j-api</artifactId>
+            <version>${log4j-api.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.logging.log4j</groupId>
+            <artifactId>log4j-core</artifactId>
+            <version>${log4j-core.version}</version>
+        </dependency>
    </dependencies>

    <build>
@ -52,6 +67,9 @@
        <itextpdf.core.version>7.2.3</itextpdf.core.version>
        <itextpdf.cleanup.version>3.0.1</itextpdf.cleanup.version>
        <pdfbox.version>3.0.0</pdfbox.version>
+        <poi-ooxml.version>5.2.5</poi-ooxml.version>
+        <log4j-api.version>2.20.0</log4j-api.version>
+        <log4j-core.version>2.20.0</log4j-core.version>
    </properties>

 </project>
--- a/pdf-2/src/main/java/com/baeldung/exceltopdf/ExcelToPDFConverter.java
+++ b/pdf-2/src/main/java/com/baeldung/exceltopdf/ExcelToPDFConverter.java
@ -0,0 +1,242 @@
+package com.baeldung.exceltopdf;
+
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.math.BigDecimal;
+import java.util.Iterator;
+
+import org.apache.poi.ss.usermodel.CellStyle;
+import org.apache.poi.ss.usermodel.HorizontalAlignment;
+import org.apache.poi.ss.usermodel.IndexedColors;
+import org.apache.poi.ss.usermodel.VerticalAlignment;
+import org.apache.poi.xssf.usermodel.XSSFColor;
+import org.apache.poi.xssf.usermodel.XSSFFont;
+import org.apache.poi.xssf.usermodel.XSSFSheet;
+import org.apache.poi.xssf.usermodel.XSSFWorkbook;
+import org.apache.poi.ss.usermodel.CellType;
+import org.apache.poi.ss.usermodel.Row;
+import org.apache.poi.ss.usermodel.Cell;
+
+import com.itextpdf.text.BaseColor;
+import com.itextpdf.text.Document;
+import com.itextpdf.text.DocumentException;
+import com.itextpdf.text.Element;
+import com.itextpdf.text.Font;
+import com.itextpdf.text.FontFactory;
+import com.itextpdf.text.Paragraph;
+import com.itextpdf.text.Phrase;
+import com.itextpdf.text.pdf.PdfPCell;
+import com.itextpdf.text.pdf.PdfPTable;
+import com.itextpdf.text.pdf.PdfWriter;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+public class ExcelToPDFConverter {
+
+    private static final Logger logger = LogManager.getLogger(ExcelToPDFConverter.class);
+
+    public static XSSFWorkbook readExcelFile(String excelFilePath) throws IOException {
+        FileInputStream inputStream = new FileInputStream(excelFilePath);
+        XSSFWorkbook workbook = new XSSFWorkbook(inputStream);
+        inputStream.close();
+        return workbook;
+    }
+
+    private static Document createPDFDocument(String pdfFilePath) throws IOException, DocumentException {
+        Document document = new Document();
+        PdfWriter.getInstance(document, new FileOutputStream(pdfFilePath));
+        document.open();
+        return document;
+    }
+
+    public static void convertExcelToPDF(String excelFilePath, String pdfFilePath) throws IOException, DocumentException {
+        XSSFWorkbook workbook = readExcelFile(excelFilePath);
+        Document document = createPDFDocument(pdfFilePath);
+
+        for (int i = 0; i < workbook.getNumberOfSheets(); i++) {
+            XSSFSheet worksheet = workbook.getSheetAt(i);
+
+            // Add header with sheet name as title
+            Paragraph title = new Paragraph(worksheet.getSheetName(), new Font(Font.FontFamily.HELVETICA, 18, Font.BOLD));
+            title.setSpacingAfter(20f);
+            title.setAlignment(Element.ALIGN_CENTER);
+            document.add(title);
+
+            createAndAddTable(worksheet, document);
+            // Add a new page for each sheet (except the last one)
+            if (i < workbook.getNumberOfSheets() - 1) {
+                document.newPage();
+            }
+        }
+
+        document.close();
+        workbook.close();
+    }
+
+    private static void createAndAddTable(XSSFSheet worksheet, Document document) throws DocumentException, IOException {
+        PdfPTable table = new PdfPTable(worksheet.getRow(0)
+            .getPhysicalNumberOfCells());
+        table.setWidthPercentage(100);
+        addTableHeader(worksheet, table);
+        addTableData(worksheet, table);
+        document.add(table);
+    }
+
+    private static void addTableHeader(XSSFSheet worksheet, PdfPTable table) throws DocumentException, IOException {
+        Row headerRow = worksheet.getRow(0);
+        for (int i = 0; i < headerRow.getPhysicalNumberOfCells(); i++) {
+            Cell cell = headerRow.getCell(i);
+            String headerText = getCellText(cell);
+            PdfPCell headerCell = new PdfPCell(new Phrase(headerText, getCellStyle(cell)));
+            setBackgroundColor(cell, headerCell);
+            setCellAlignment(cell, headerCell);
+            table.addCell(headerCell);
+        }
+    }
+
+    public static String getCellText(Cell cell) {
+        String cellValue;
+        switch (cell.getCellType()) {
+        case STRING:
+            cellValue = cell.getStringCellValue();
+            break;
+        case NUMERIC:
+            cellValue = String.valueOf(BigDecimal.valueOf(cell.getNumericCellValue()));
+            break;
+        case BLANK:
+        default:
+            cellValue = "";
+            break;
+        }
+        return cellValue;
+    }
+
+    private static void addTableData(XSSFSheet worksheet, PdfPTable table) throws DocumentException, IOException {
+        Iterator<Row> rowIterator = worksheet.iterator();
+        while (rowIterator.hasNext()) {
+            Row row = rowIterator.next();
+            if (row.getRowNum() == 0) {
+                continue;
+            }
+            for (int i = 0; i < row.getPhysicalNumberOfCells(); i++) {
+                Cell cell = row.getCell(i);
+                String cellValue = getCellText(cell);
+                PdfPCell cellPdf = new PdfPCell(new Phrase(cellValue, getCellStyle(cell)));
+                setBackgroundColor(cell, cellPdf);
+                setCellAlignment(cell, cellPdf);
+                table.addCell(cellPdf);
+            }
+        }
+    }
+
+    private static void setBackgroundColor(Cell cell, PdfPCell cellPdf) {
+        // Set background color
+        short bgColorIndex = cell.getCellStyle()
+            .getFillForegroundColor();
+        if (bgColorIndex != IndexedColors.AUTOMATIC.getIndex()) {
+            XSSFColor bgColor = (XSSFColor) cell.getCellStyle()
+                .getFillForegroundColorColor();
+            if (bgColor != null) {
+                byte[] rgb = bgColor.getRGB();
+                if (rgb != null && rgb.length == 3) {
+                    cellPdf.setBackgroundColor(new BaseColor(rgb[0] & 0xFF, rgb[1] & 0xFF, rgb[2] & 0xFF));
+                }
+            }
+        }
+    }
+
+    private static void setCellAlignment(Cell cell, PdfPCell cellPdf) {
+        CellStyle cellStyle = cell.getCellStyle();
+
+        HorizontalAlignment horizontalAlignment = cellStyle.getAlignment();
+        VerticalAlignment verticalAlignment = cellStyle.getVerticalAlignment();
+
+        switch (horizontalAlignment) {
+        case LEFT:
+            cellPdf.setHorizontalAlignment(Element.ALIGN_LEFT);
+            break;
+        case CENTER:
+            cellPdf.setHorizontalAlignment(Element.ALIGN_CENTER);
+            break;
+        case JUSTIFY:
+        case FILL:
+            cellPdf.setVerticalAlignment(Element.ALIGN_JUSTIFIED);
+            break;
+        case RIGHT:
+            cellPdf.setHorizontalAlignment(Element.ALIGN_RIGHT);
+            break;
+        }
+
+        switch (verticalAlignment) {
+        case TOP:
+            cellPdf.setVerticalAlignment(Element.ALIGN_TOP);
+            break;
+        case CENTER:
+            cellPdf.setVerticalAlignment(Element.ALIGN_MIDDLE);
+            break;
+        case JUSTIFY:
+            cellPdf.setVerticalAlignment(Element.ALIGN_JUSTIFIED);
+            break;
+        case BOTTOM:
+            cellPdf.setVerticalAlignment(Element.ALIGN_BOTTOM);
+            break;
+        }
+    }
+
+    private static Font getCellStyle(Cell cell) throws DocumentException, IOException {
+        Font font = new Font();
+        CellStyle cellStyle = cell.getCellStyle();
+        org.apache.poi.ss.usermodel.Font cellFont = cell.getSheet()
+            .getWorkbook()
+            .getFontAt(cellStyle.getFontIndexAsInt());
+
+        short fontColorIndex = cellFont.getColor();
+        if (fontColorIndex != IndexedColors.AUTOMATIC.getIndex() && cellFont instanceof XSSFFont) {
+            XSSFColor fontColor = ((XSSFFont) cellFont).getXSSFColor();
+            if (fontColor != null) {
+                byte[] rgb = fontColor.getRGB();
+                if (rgb != null && rgb.length == 3) {
+                    font.setColor(new BaseColor(rgb[0] & 0xFF, rgb[1] & 0xFF, rgb[2] & 0xFF));
+                }
+            }
+        }
+
+        if (cellFont.getItalic()) {
+            font.setStyle(Font.ITALIC);
+        }
+
+        if (cellFont.getStrikeout()) {
+            font.setStyle(Font.STRIKETHRU);
+        }
+
+        if (cellFont.getUnderline() == 1) {
+            font.setStyle(Font.UNDERLINE);
+        }
+
+        short fontSize = cellFont.getFontHeightInPoints();
+        font.setSize(fontSize);
+
+        if (cellFont.getBold()) {
+            font.setStyle(Font.BOLD);
+        }
+
+        String fontName = cellFont.getFontName();
+        if (FontFactory.isRegistered(fontName)) {
+            font.setFamily(fontName); // Use extracted font family if supported by iText
+        } else {
+            logger.warn("Unsupported font type: {}", fontName);
+            // - Use a fallback font (e.g., Helvetica)
+            font.setFamily("Helvetica");
+        }
+
+        return font;
+    }
+
+    public static void main(String[] args) throws DocumentException, IOException {
+        String excelFilePath = "src/main/resources/excelsample.xlsx";
+        String pdfFilePath = "src/main/resources/pdfsample.pdf";
+        convertExcelToPDF(excelFilePath, pdfFilePath);
+    }
+}
--- a/pdf-2/src/main/resources/excelsample.xlsx
+++ b/pdf-2/src/main/resources/excelsample.xlsx
--- a/pdf-2/src/main/resources/pdfsample.pdf
+++ b/pdf-2/src/main/resources/pdfsample.pdf
@ -0,0 +1,43 @@
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