將文檔從一種格式轉換為另一種格式是Spire.XLS的主要功能之一。這種轉換只不過是加載和保存操作的組合。因此，使用Spire.XLS可以將文檔從任何受支持的加載格式轉換為任何受支持的保存格式。

本文整理了包括在Java中以下文件格式的轉換指南，希望對您有所幫助：

• 將Excel轉換為PDF
  
• 將Excel轉換為圖像
  
• 將Excel轉換為TIFF
  

>>你可以點擊這里下載Spire.XLS for Java測試體驗。

將Excel轉換為PDF

將整個Excel工作簿轉換為PDF。

import com.spire.xls.*;

public class ExceltoPDF {
    public static void main(String[] args) {
        //Create a Workbook
        Workbook workbook = new Workbook();
        workbook.loadFromFile("Sample.xlsx");

        //Fit to page
        workbook.getConverterSetting().setSheetFitToPage(true);

        workbook.saveToFile("ToPDF.pdf",FileFormat.PDF);
    }
}

將單個Excel工作表轉換為PDF。

import com.spire.xls.*;

public class ExceltoPDF {
    public static void main(String[] args) {
        //Create a Workbook
        Workbook workbook = new Workbook();
        workbook.loadFromFile("Sample.xlsx");

        //Get the first worksheet
        Worksheet worksheet = workbook.getWorksheets().get(0);

        worksheet.saveToPdf("ToPDF2.pdf");
    }
}

將Excel轉換為Java中的圖像

import com.spire.xls.*;
import java.io.*;

public class ExcelToImage {
    public static void main(String[] args) throws IOException {
        //Create a workbook instance
        Workbook workbook = new Workbook();
        //Load the Excel file
        workbook.loadFromFile("Chart.xlsx");

        //Get the first worksheet
        Worksheet sheet = workbook.getWorksheets().get(0);

        //Save the sheet to image
        sheet.saveToImage("image.png");
    }
}

將Excel轉換為TIFF

import com.spire.xls.Workbook;
import com.spire.xls.Worksheet;

public class ConvertExcelToTIFF {
    public static void main(String[] args) {
        //Create a Workbook instance
        Workbook workbook = new Workbook();
        //Load the Excel file
        workbook.loadFromFile("Input.xlsx");

        //Get the first worksheet
        Worksheet sheet = workbook.getWorksheets().get(0);

        //Save the first worksheet to TIFF
        sheet.saveToTiff("SheetToTiff.tiff");

        //Save a particular cell range in the first worksheet to TIFF
        //sheet.saveToTiff("CellRangeToTiff.tiff",1,1,5,2);
    }
}