Aspose.Cells FOSS
Java
Core Cell Operations

Hur man arbetar med grundläggande celloperationer i Java

Översikt

Cell-klassen är den centrala enheten för lagring och läsning av kalkylbladsdata. Denna guide täcker lagring av typade värden, typinspektion, formellagring och åtkomst till strängvärden.

Lagring av typade värden

Använd cell.putValue() för alla primitiva typer:

import com.aspose.cells_foss.Cell;
import com.aspose.cells_foss.Workbook;
import com.aspose.cells_foss.Worksheet;

try (Workbook workbook = new Workbook()) {
    Worksheet sheet = workbook.getWorksheets().get(0);
    Cell a1 = sheet.getCells().get("A1");
    a1.putValue("Label");        // String
    Cell b1 = sheet.getCells().get("B1");
    b1.putValue(42);             // int
    Cell c1 = sheet.getCells().get("C1");
    c1.putValue(3.14);           // double
    Cell d1 = sheet.getCells().get("D1");
    d1.putValue(true);           // boolean
    workbook.save("typed.xlsx");
}

Inspektera värdetyp 

import com.aspose.cells_foss.Cell;
import com.aspose.cells_foss.CellValueType;
import com.aspose.cells_foss.Workbook;
import com.aspose.cells_foss.Worksheet;

try (Workbook workbook = new Workbook()) {
    Worksheet sheet = workbook.getWorksheets().get(0);
    Cell b1 = sheet.getCells().get("B1");
    b1.putValue(123);
    CellValueType type = b1.getType();
    System.out.println(type);           // NUMBER
    System.out.println(b1.getStringValue());  // "123"
    workbook.save("inspect.xlsx");
}

Lagring av formler 

import com.aspose.cells_foss.Cell;
import com.aspose.cells_foss.Workbook;
import com.aspose.cells_foss.Worksheet;

try (Workbook workbook = new Workbook()) {
    Worksheet sheet = workbook.getWorksheets().get(0);
    Cell b1 = sheet.getCells().get("B1");
    b1.putValue(100.0);
    Cell c1 = sheet.getCells().get("C1");
    c1.setFormula("=B1*1.2");
    workbook.save("formulas.xlsx");
}
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