Kā strādāt ar tabulām Java

Aspose.Slides FOSS for Java supports creating tables on slides with configurable column widths and row heights. This guide shows how to add a table, populate it with data, and apply basic text formatting to cells.

Solī pa solim rokasgrāmata

1. solis: Pievienojiet Maven atkarību

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

Step 2: 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);
}

Step 3: Definēt kolonnu platumus un rindu augstumus

Tabulām ir jānorāda konkrēti kolonnu platumi un rindu augstumi punktos (1 punkts = 1/72 collas). Standarta slaids ir 720 punktus plats un 540 punktus garš.

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

Step 4: 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);
}

Step 5: Iestatīt šūnas tekstu

Piekļūst šūnām, izmantojot table.getRows().get(rowIndex).get(colIndex) un piešķir tekstu, izmantojot .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);
}

Step 6: Formatēt galvenes šūnas tekstu

Pielieto 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 Darbīgs 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");
    }
}

Biežāk sastopamās problēmas un to risinājumi

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

Rindu un kolonnas indeksi sākas no nulles. Ja jūs definējāt rowHeights ar 3 elementiem, derīgi rindu indeksi ir 0, 1, 2.

Šūnas teksts neparādās saglabātajā failā

Vienmēr piešķir, izmantojot .getTextFrame().setText(value). Piekļūst šūnām kā table.getRows().get(rowIndex).get(colIndex).getTextFrame().setText("value").

Tabulas pozīcija ir ārpus slaida

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

Biežāk uzdotie jautājumi

Vai varu apvienot tabulas šūnas?

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

Vai varu piemērot tabulas vispārīgu fona krāsu?

Pielietojiet aizpildījuma 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 varu iestatīt tabulas stila priekšiestatījumu?

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