Kā strādāt ar tabulām Java

Aspose.Slides FOSS for Java atbalsta tabulu izveidi slaidos ar konfigurējamiem kolonnu platumiem un rindu augstumiem. Šajā ceļvedī parādīts, kā pievienot tabulu, aizpildīt to ar datiem un piemērot pamata teksta formatēšanu šūnām.

Rokasgrāmata soli pa solim

1. solis: Pievienojiet Maven atkarību

<dependency>
  <groupId>org.aspose.slides.foss</groupId>
  <artifactId>aspose-slides-foss</artifactId>
  <version>1.0.0</version>
</dependency>

2. solis: Izveidot vai atvērt prezentāciju

import org.aspose.slides.foss.Presentation;
import org.aspose.slides.foss.ISlide;
import org.aspose.slides.foss.ITable;
import org.aspose.slides.foss.ICell;
import org.aspose.slides.foss.IParagraphCollection;
import org.aspose.slides.foss.IPortionFormat;
import org.aspose.slides.foss.NullableBool;
import org.aspose.slides.foss.FillType;
import org.aspose.slides.foss.export.SaveFormat;
import org.aspose.slides.foss.drawing.Color;

try (Presentation prs = new Presentation()) {
    ISlide slide = prs.getSlides().get(0);
    // ... add table ...
    prs.save("table.pptx", SaveFormat.PPTX);
}

3. solis: Definēt kolonnu platumus un rindu augstumus

Tabulām jānorāda skaidri kolonnu platumi un rindu augstumi punktos (1 punkts = 1/72 collas). Standarta slaids ir 720 punkti plats un 540 punkti augsts.

double[] colWidths = {200.0, 150.0, 150.0};   // 3 columns
double[] rowHeights = {45.0, 40.0, 40.0};     // 3 rows

4. solis: Pievienot tabulu

slide.getShapes().addTable(x, y, colWidths, rowHeights) izveido tabulu pozīcijā (x, y):

import org.aspose.slides.foss.Presentation;
import org.aspose.slides.foss.ISlide;
import org.aspose.slides.foss.ITable;
import org.aspose.slides.foss.ICell;
import org.aspose.slides.foss.IParagraphCollection;
import org.aspose.slides.foss.IPortionFormat;
import org.aspose.slides.foss.NullableBool;
import org.aspose.slides.foss.FillType;
import org.aspose.slides.foss.export.SaveFormat;
import org.aspose.slides.foss.drawing.Color;

try (Presentation prs = new Presentation()) {
    ISlide slide = prs.getSlides().get(0);

    double[] colWidths = {200.0, 150.0, 150.0};
    double[] rowHeights = {45.0, 40.0, 40.0};
    ITable table = slide.getShapes().addTable(50, 100, colWidths, rowHeights);

    prs.save("table.pptx", SaveFormat.PPTX);
}

Solis 5: Iestatīt šūnas tekstu

Piekļūstiet šūnām caur table.getRows().get(rowIndex).get(colIndex) un piešķiriet tekstu caur .getTextFrame().setText():

import org.aspose.slides.foss.Presentation;
import org.aspose.slides.foss.ISlide;
import org.aspose.slides.foss.ITable;
import org.aspose.slides.foss.ICell;
import org.aspose.slides.foss.IParagraphCollection;
import org.aspose.slides.foss.IPortionFormat;
import org.aspose.slides.foss.NullableBool;
import org.aspose.slides.foss.FillType;
import org.aspose.slides.foss.export.SaveFormat;
import org.aspose.slides.foss.drawing.Color;

try (Presentation prs = new Presentation()) {
    ISlide slide = prs.getSlides().get(0);

    double[] colWidths = {200.0, 150.0, 150.0};
    double[] rowHeights = {45.0, 40.0, 40.0};
    ITable table = slide.getShapes().addTable(50, 100, colWidths, rowHeights);

    // Header row (row 0)
    String[] headers = {"Product", "Units Sold", "Revenue"};
    for (int col = 0; col < headers.length; col++) {
        table.getRows().get(0).get(col).getTextFrame().setText(headers[col]);
    }

    // Data rows
    String[][] data = {
        {"Widget A", "1,200", "$24,000"},
        {"Widget B", "850", "$17,000"},
    };
    for (int row = 0; row < data.length; row++) {
        for (int col = 0; col < data[row].length; col++) {
            table.getRows().get(row + 1).get(col)
                .getTextFrame().setText(data[row][col]);
        }
    }

    prs.save("sales-table.pptx", SaveFormat.PPTX);
}

6. solis: Formatēt galvenes šūnas tekstu

Pielietojiet treknraksta formatējumu galvenes šūnām, izmantojot PortionFormat:

import org.aspose.slides.foss.Presentation;
import org.aspose.slides.foss.ISlide;
import org.aspose.slides.foss.ITable;
import org.aspose.slides.foss.ICell;
import org.aspose.slides.foss.IParagraphCollection;
import org.aspose.slides.foss.IPortionFormat;
import org.aspose.slides.foss.NullableBool;
import org.aspose.slides.foss.FillType;
import org.aspose.slides.foss.export.SaveFormat;
import org.aspose.slides.foss.drawing.Color;

for (int col = 0; col < headers.length; col++) {
    ICell cell = table.getRows().get(0).get(col);
    IParagraphCollection paragraphs = cell.getTextFrame().getParagraphs();
    if (paragraphs.size() > 0 && paragraphs.get(0).getPortions().size() > 0) {
        IPortionFormat fmt = paragraphs.get(0).getPortions().get(0)
            .getPortionFormat();
        fmt.setFontBold(NullableBool.TRUE);
        fmt.getFillFormat().setFillType(FillType.SOLID);
        fmt.getFillFormat().getSolidFillColor().setColor(
            Color.fromArgb(255, 255, 255, 255)
        );
    }
}

Pilns darbos piemērs

import org.aspose.slides.foss.Presentation;
import org.aspose.slides.foss.ISlide;
import org.aspose.slides.foss.ITable;
import org.aspose.slides.foss.ICell;
import org.aspose.slides.foss.IParagraphCollection;
import org.aspose.slides.foss.IPortionFormat;
import org.aspose.slides.foss.NullableBool;
import org.aspose.slides.foss.FillType;
import org.aspose.slides.foss.export.SaveFormat;
import org.aspose.slides.foss.drawing.Color;

public class CreateTable {
    public static void main(String[] args) {
        String[][] dataRows = {
            {"North", "$1.2M", "+8%"},
            {"South", "$0.9M", "+4%"},
            {"East",  "$1.5M", "+12%"},
            {"West",  "$0.7M", "+2%"},
        };
        String[] headers = {"Region", "Revenue", "Growth"};

        try (Presentation prs = new Presentation()) {
            ISlide slide = prs.getSlides().get(0);

            double[] colWidths = {180.0, 140.0, 120.0};
            double[] rowHeights = new double[dataRows.length + 1];
            rowHeights[0] = 45.0;
            for (int i = 1; i < rowHeights.length; i++) {
                rowHeights[i] = 38.0;
            }

            ITable table = slide.getShapes().addTable(
                60, 80, colWidths, rowHeights
            );

            // Header row
            for (int col = 0; col < headers.length; col++) {
                ICell cell = table.getRows().get(0).get(col);
                cell.getTextFrame().setText(headers[col]);
                if (cell.getTextFrame().getParagraphs().size() > 0
                    && cell.getTextFrame().getParagraphs().get(0)
                        .getPortions().size() > 0) {
                    cell.getTextFrame().getParagraphs().get(0)
                        .getPortions().get(0).getPortionFormat()
                        .setFontBold(NullableBool.TRUE);
                }
            }

            // Data rows
            for (int row = 0; row < dataRows.length; row++) {
                for (int col = 0; col < dataRows[row].length; col++) {
                    table.getRows().get(row + 1).get(col)
                        .getTextFrame().setText(dataRows[row][col]);
                }
            }

            prs.save("regional-revenue.pptx", SaveFormat.PPTX);
        }
        System.out.println("Saved regional-revenue.pptx");
    }
}

Biežas problēmas un risinājumi

IndexOutOfBoundsException pieejot table.getRows().get(row).get(col)

Rindas un kolonnu indeksi sākas ar 0. Ja jūs definējāt rowHeights ar 3 elementiem, derīgi rindas indeksi ir 0, 1, 2.

Šūnas teksts neparādās saglabātajā failā

Vienmēr piešķiriet caur .getTextFrame().setText(value). Piekļūstiet šūnām kā table.getRows().get(rowIndex).get(colIndex).getTextFrame().setText("value").

Tabulas novietojums ir ārpus slaida

Pārbaudiet, ka x + sum(colWidths) <= 720 un y + sum(rowHeights) <= 540 ir paredzēti standarta slaidam.

Biežāk uzdotie jautājumi

Vai es varu apvienot tabulas šūnas?

Šūnu sapludināšana (mergeCells) ir deklarēta API, bet šajā izdevumā izraisa UnsupportedOperationException.

Vai varu piemērot tabulas vispārīgu fona krāsu?

Pielietojiet aizpildīšanas formatējumu katrai atsevišķai šūnai:

for (int row = 0; row < table.getRows().size(); row++) {
    for (int col = 0; col < table.getColumns().size(); col++) {
        ICell cell = table.getRows().get(row).get(col);
        cell.getFillFormat().setFillType(FillType.SOLID);
        cell.getFillFormat().getSolidFillColor().setColor(
            Color.fromArgb(255, 240, 248, 255)
        );
    }
}

Vai es varu iestatīt tabulas stila priekšiestatījumu?

Jā. Izmantojiet table.setStylePreset(TableStylePreset.MEDIUM_STYLE_2_ACCENT_1), lai piemērotu iebūvēto tabulas stilu.