Bestimmte Arbeitsblätter in einem Arbeitsbuch laden
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Standardmäßig lädt Aspose.Cells die gesamte Arbeitsmappe in den Speicher. Es ist möglich, nur bestimmte Blätter zu laden. Dies kann die Leistung verbessern und weniger Speicher verbrauchen. Dieser Ansatz ist nützlich, wenn mit einer großen Arbeitsmappe mit mehreren Arbeitsblättern gearbeitet wird.
Bestimmte Arbeitsblätter in einer Arbeitsmappe laden
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// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-Java | |
// The path to the documents directory. | |
String dataDir = Utils.getDataDir(LoadSpecificWorksheetsinWorkbook.class); | |
//Define a new Workbook | |
Workbook workbook; | |
/// Load the workbook with the specified worksheet only. | |
LoadOptions loadOptions = new LoadOptions(LoadFormat.XLSX); | |
loadOptions.setLoadFilter(new CustomLoad()); | |
// Creat the workbook. | |
workbook = new Workbook(dataDir+ "TestData.xlsx", loadOptions); | |
// Perform your desired task. | |
// Save the workbook. | |
workbook.save(dataDir+ "outputFile.out.xlsx"); | |
public class CustomLoad extends LoadFilter | |
{ | |
public void startSheet(Worksheet sheet) | |
{ | |
if (sheet.getName() == "Sheet2") | |
{ | |
// Load everything from worksheet "Sheet2" | |
this.setLoadDataFilterOptions(LoadDataFilterOptions.ALL); | |
} | |
else | |
{ | |
// Load nothing | |
this.setLoadDataFilterOptions(LoadDataFilterOptions.NONE); | |
} | |
} | |
} |