Din första Aspose.Cells-ansökan - Hello World
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Det här nybörjarämnet visar hur utvecklare kan skapa en enkel första applikation (Hello World) med Aspose.Cells' enkel API. Applikationen skapar en Microsoft Excel-fil med orden Hello World i en specificerad cell i ett kalkylblad.
Skapar Hello World-applikationen
Så här skapar du Hello World-applikationen med Aspose.Cells API:
- Skapa en instans av**Arbetsbok**klass.
- Använd licensen:
- Om du har köpt en licens, använd sedan licensen i din applikation för att få tillgång till Aspose.Cells' full funktionalitet
- Om du använder utvärderingsversionen av komponenten (om du använder Aspose.Cells utan licens), hoppa över det här steget.
- Skapa en ny Microsoft Excel-fil, eller öppna en befintlig fil där du vill lägga till/uppdatera lite text.
- Få åtkomst till valfri cell i ett kalkylblad i Excel-filen Microsoft.
- Sätt in ordenHello World! in i en cell som nås.
- Generera den modifierade Microsoft Excel-filen.
Exemplen nedan visar stegen ovan.
Skapa en arbetsbok
Följande exempel skapar en ny arbetsbok från början, skriver orden “Hello World!” i cell A1 på det första kalkylbladet och sparar filen.
Det genererade kalkylarket
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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(CreatingWorkbook.class); | |
// Creating a file input stream to reference the license file | |
FileInputStream fstream = new FileInputStream("Aspose.Cells.lic"); | |
// Create a License object | |
License license = new License(); | |
// Applying the Aspose.Cells license | |
license.setLicense(fstream); | |
// Instantiating a Workbook object that represents a Microsoft Excel | |
// file. | |
Workbook wb = new Workbook(); | |
// Note when you create a new workbook, a default worksheet, "Sheet1", is by default added to the workbook. Accessing the | |
// first worksheet in the book ("Sheet1"). | |
Worksheet sheet = wb.getWorksheets().get(0); | |
// Access cell "A1" in the sheet. | |
Cell cell = sheet.getCells().get("A1"); | |
// Input the "Hello World!" text into the "A1" cell | |
cell.setValue("Hello World!"); | |
// Save the Microsoft Excel file. | |
wb.save(dataDir + "MyBook.xls", FileFormatType.EXCEL_97_TO_2003); | |
wb.save(dataDir + "MyBook.xlsx"); | |
wb.save(dataDir + "MyBook.ods"); |
Öppna en befintlig fil
Följande exempel öppnar en befintlig Microsoft Excel-mallfil som heterbok1.xls, skriver orden “Hello World!” i cell A1 i det första kalkylbladet och sparar arbetsboken som en ny fil.
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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(OpeningExistingFile.class); | |
// Creating a file input stream to reference the license file | |
FileInputStream fstream = new FileInputStream("Aspose.Cells.lic"); | |
// Create a License object | |
License license = new License(); | |
// Set the license of Aspose.Cells to avoid the evaluation limitations | |
license.setLicense(fstream); | |
// Instantiate a Workbook object that represents an Excel file | |
Workbook workbook = new Workbook(dataDir + "book1.xls"); | |
// Get the reference of "A1" cell from the cells of a worksheet | |
Cell cell = workbook.getWorksheets().get(0).getCells().get("A1"); | |
// Set the "Hello World!" value into the "A1" cell | |
cell.setValue("Hello World!"); | |
// Write the Excel file | |
workbook.save(dataDir + "HelloWorld.xls", FileFormatType.EXCEL_97_TO_2003); | |
workbook.save(dataDir + "HelloWorld.xlsx"); | |
workbook.save(dataDir + "HelloWorld.ods"); |