任何人都可以告诉我是否可以使用poi和itext开源apis（包括不需要openoffice）将包含图像，图纸的excel转换为pdf。
我的代码如下所示，代码工作正常......但复杂的excel我没有得到确切的pdf
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Date;
import java.util.Iterator;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.openxml4j.opc.OPCPackage;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import com.itextpdf.text.Anchor;
import com.itextpdf.text.BaseColor;
import com.itextpdf.text.Chapter;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Element;
import com.itextpdf.text.Font;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.Phrase;
import com.itextpdf.text.Section;
import com.itextpdf.text.pdf.PdfPCell;
import com.itextpdf.text.pdf.PdfPTable;
import com.itextpdf.text.pdf.PdfWriter;
public class ExceltoPDF {
/**
* @param args
* @throws Exception
*/
private static String FILE = "C:\\Users\\Work\\Downloads\\OIS-Project Planning.pdf";
private static Font catFont = new Font(Font.FontFamily.TIMES_ROMAN, 18,
Font.BOLD);
private static Font redFont = new Font(Font.FontFamily.TIMES_ROMAN, 12,
Font.NORMAL, BaseColor.RED);
private static Font subFont = new Font(Font.FontFamily.TIMES_ROMAN, 16,
Font.BOLD);
private static Font smallBold = new Font(Font.FontFamily.TIMES_ROMAN, 12,
Font.BOLD);
//Find out number of columns in the excel
private static int numberOfColumns;
public static void main(String[] args) {
String excelFile = "C:\\Users\\Work\\Downloads\\OIS-Project Planning.xlsx";
File xlsFile = new File(excelFile);
Workbook workbook;
try {
workbook = loadSpreadSheet(xlsFile);
readSpreadSheet(workbook);
} catch (FileNotFoundException e) {
System.err.println("Excel File (or) PDF File is already opened. Please close the file");
System.exit(1);
} catch (Exception e) {
e.printStackTrace();
}
}
private static void readSpreadSheet(Workbook workbook) throws IOException,
DocumentException {
Document document = new Document();
PdfWriter.getInstance(document, new FileOutputStream(FILE));
document.open();
addMetaData(document);
addTitlePage(document);
Anchor anchor = new Anchor("First Chapter", catFont);
anchor.setName("First Chapter");
// Second parameter is the number of the chapter
Chapter catPart = new Chapter(new Paragraph(anchor), 1);
Paragraph subPara = new Paragraph("Table", subFont);
Section subCatPart = catPart.addSection(subPara);
addEmptyLine(subPara, 5);
Sheet sheet = workbook.getSheetAt(0);
// Iterate through each rows from first sheet
Iterator<Row> rowIterator = sheet.iterator();
int temp = 0;
boolean flag = true;
PdfPTable table = null;
while (rowIterator.hasNext()) {
Row row = rowIterator.next();
int cellNumber = 0;
if (flag) {
table = new PdfPTable(row.getLastCellNum());
flag = false;
}
// For each row, iterate through each columns
Iterator<Cell> cellIterator = row.cellIterator();
while (cellIterator.hasNext()) {
Cell cell = cellIterator.next();
switch (cell.getCellType()) {
case Cell.CELL_TYPE_STRING:
if (temp == 0) {
numberOfColumns = row.getLastCellNum();
PdfPCell c1 = new PdfPCell(new Phrase(
cell.getStringCellValue()));
c1.setHorizontalAlignment(Element.ALIGN_CENTER);
table.addCell(c1);
table.setHeaderRows(1);
}else{
cellNumber =checkEmptyCellAndAddCellContentToPDFTable(cellNumber,cell,table);
}
cellNumber++;
break;
case Cell.CELL_TYPE_NUMERIC:
cellNumber =checkEmptyCellAndAddCellContentToPDFTable(cellNumber,cell,table);
cellNumber++;
break;
}
}
temp = 1;
if(numberOfColumns != cellNumber){
for(int i=0;i<(numberOfColumns-cellNumber);i++){
table.addCell(" ");
}
}
}
subCatPart.add(table);
// Now add all this to the document
document.add(catPart);
document.close();
}
private static int checkEmptyCellAndAddCellContentToPDFTable(int cellNumber, Cell cell, PdfPTable table) {
if (cellNumber == cell.getColumnIndex()) {
if(cell.getCellType() == Cell.CELL_TYPE_NUMERIC){
table.addCell(Double.toString(cell.getNumericCellValue()));
}
if(cell.getCellType() == Cell.CELL_TYPE_STRING){
table.addCell(cell.getStringCellValue());
}
} else {
while( cellNumber < cell.getColumnIndex()) {
table.addCell(" ");
cellNumber++;
}
if (cellNumber == cell.getColumnIndex()) {
if(cell.getCellType() == Cell.CELL_TYPE_NUMERIC){
table.addCell(Double.toString(cell.getNumericCellValue()));
}
if(cell.getCellType() == Cell.CELL_TYPE_STRING){
table.addCell(cell.getStringCellValue());
}
}
cellNumber = cell.getColumnIndex();
}
return cellNumber;
}
private static void addMetaData(Document document) {
document.addTitle("My first PDF");
document.addSubject("Using iText");
document.addKeywords("Java, PDF, iText");
document.addAuthor("Uvaraj");
document.addCreator("Uvaraj");
}
private static void addTitlePage(Document document)
throws DocumentException {
Paragraph preface = new Paragraph();
// We add one empty line
addEmptyLine(preface, 1);
// Lets write a big header
preface.add(new Paragraph("Title of the document", catFont));
addEmptyLine(preface, 1);
// Will create: Report generated by: _name, _date
preface.add(new Paragraph("Report generated by: " + "Uvaraj" + ", "
+ new Date(), smallBold));
addEmptyLine(preface, 3);
preface.add(new Paragraph(
"This document describes something which is very important ",
smallBold));
addEmptyLine(preface, 8);
preface.add(new Paragraph(
"This document is a preliminary version ;-).", redFont));
document.add(preface);
// Start a new page
document.newPage();
}
private static void addEmptyLine(Paragraph paragraph, int number) {
for (int i = 0; i < number; i++) {
paragraph.add(new Paragraph(" "));
}
}
private static Workbook loadSpreadSheet(File xlsFile) throws Exception {
Workbook workbook = null;
String ext = getFileExtension(xlsFile.getName());
if (ext.equalsIgnoreCase("xlsx")) {
OPCPackage pkg = OPCPackage.open(xlsFile.getAbsolutePath());
workbook = new XSSFWorkbook(pkg);
pkg.close();
} else if (ext.equalsIgnoreCase("xls")) {
InputStream xlsFIS = new FileInputStream(xlsFile);
workbook = new HSSFWorkbook(xlsFIS);
xlsFIS.close();
} else {
throw new Exception("FILE EXTENSION NOT RECOGNIZED");
}
return workbook;
}
private static String getFileExtension(String fileName) {
String ext = "";
int mid = fileName.lastIndexOf(".");
ext = fileName.substring(mid + 1, fileName.length());
System.out.println("File Extension --" + ext);
return ext;
}
}