iText中输出中文，有三种方式：

1、使用iTextAsian.jar中的字体
    BaseFont.createFont("STSong-Light", "UniGB-UCS2-H",BaseFont.NOT_EMBEDDED);
2、使用Windows系统字体(TrueType)
        BaseFont.createFont("C:/WINDOWS/Fonts/SIMYOU.TTF", BaseFont.IDENTITY_H,BaseFont.NOT_EMBEDDED);    
3、使用资源字体(ClassPath)
    BaseFont.createFont("/SIMYOU.TTF", BaseFont.IDENTITY_H,BaseFont.NOT_EMBEDDED);

第2、三种方式使用的字体多一些，但是需要和实际资源绑定，在实际项目中可以将一些字体库和项目打包在一起，下面我们以iTextAsian中自带的字体为例说明如何输出中文：

BaseFont bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H",
BaseFont.NOT_EMBEDDED);
Font FontChinese = new Font(bfChinese, 12, Font.NORMAL);
document.add(new Paragraph(" 产生的报告",FontChinese));

一个完整的例子：

/*
* $Id: RepeatingTable.java,v 1.5 2005/05/09 11:52:47 blowagie Exp $
* $Name:  $
*
* This code is part of the 'iText Tutorial'.
* You can find the complete tutorial at the following address:
* http://itextdocs.lowagie.com/tutorial/
*
* This code is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* itext-questions@lists.sourceforge.net
*/
package com.lowagie.examples.objects.tables.alternatives;
import java.awt.Color;
import java.io.File;
import java.io.FileOutputStream;
import java.util.Date;
import com.lowagie.text.Cell;
import com.lowagie.text.Document;
import com.lowagie.text.Element;
import com.lowagie.text.Font;
import com.lowagie.text.FontFactory;
import com.lowagie.text.PageSize;
import com.lowagie.text.Paragraph;
import com.lowagie.text.Phrase;
import com.lowagie.text.Rectangle;
import com.lowagie.text.Table;
import com.lowagie.text.pdf.BaseFont;
import com.lowagie.text.pdf.PdfWriter;
/**
* Shows how a table is split if it doesn't fit the page.
*/
public class RepeatingTable {
/**
* Shows how a table is split if it doesn't fit the page.
*
* @param args
*            no arguments needed
*/
public static void main(String[] args) {
System.out.println("table splitting");
// creation of the document with a certain size and certain margins
Document document = new Document(PageSize.A4.rotate(), 50, 50, 50, 50);
try {
// creation of the different writers
String filePath = "d:" + File.separator + "temp" + File.separator
+ "iText_Generated_pdf" + File.separator + "table"
+ File.separator;
File file = new File(filePath);
if (!file.exists()) {
file.mkdirs();
}
PdfWriter.getInstance(document, new FileOutputStream(filePath
+ "repeatingtable.pdf"));
// we add some meta information to the document
document.addAuthor("chenzwei@cn.ibm.com,CTE WAC,GBSC,CDL,IBM");
document.addSubject("This is a sample of iText in CTE.");
document.open();
Table datatable = new Table(10);
int headerwidths[] = { 10, 24, 12, 12, 7, 7, 7, 7, 7, 7 };
datatable.setWidths(headerwidths);
datatable.setWidth(100);
datatable.setPadding(3);
// the first cell spans 10 columns
Cell cell = new Cell(new Phrase(
"Administration -System Users Report", FontFactory.getFont(
FontFactory.HELVETICA, 24, Font.BOLD)));
cell.setHorizontalAlignment(Element.ALIGN_CENTER);
cell.setLeading(30);
cell.setColspan(10);
cell.setBorder(Rectangle.NO_BORDER);
cell.setBackgroundColor(new Color(0xC0, 0xC0, 0xC0));
datatable.addCell(cell);
// These cells span 2 rows
datatable.setBorderWidth(2);
datatable.setAlignment(1);
datatable.addCell("User Id");
datatable.addCell("Name\nAddress");
datatable.addCell("Company");
datatable.addCell("Department");
datatable.addCell("Admin");
datatable.addCell("Data");
datatable.addCell("Expl");
datatable.addCell("Prod");
datatable.addCell("Proj");
datatable.addCell("Online");
// this is the end of the table header
datatable.endHeaders();
datatable.setBorderWidth(1);
for (int i = 1; i < 30; i++) {
datatable.setAlignment(Element.ALIGN_LEFT);
datatable.addCell("myUserId");
datatable
.addCell("Somebody with a very, very, very, very, very, very, very, very, very, very, very, very, very, very, very, very, very, very, very, very, very, very, very, very, very, very, very, very, very, very, very long long name");
datatable.addCell("No Name Company");
datatable.addCell("D" + i);
datatable.setAlignment(Element.ALIGN_CENTER);
datatable.addCell("No");
datatable.addCell("Yes");
datatable.addCell("No");
datatable.addCell("Yes");
datatable.addCell("No");
datatable.addCell("Yes");
}
BaseFont bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);
Font FontChinese = new Font(bfChinese, 12, Font.NORMAL);
document.add(new Paragraph(" 产生的报告",FontChinese));
document.add(datatable);
document.newPage();
document.add(new Paragraph(
"com.lowagie.text.pdf.PdfPTable - Cells split\n\n"));
datatable.setConvert2pdfptable(true);
document.add(datatable);
document.newPage();
document.add(new Paragraph(
"com.lowagie.text.Table - Cells kept together"));
datatable.setConvert2pdfptable(false);
datatable.setCellsFitPage(true);
document.add(datatable);
document.newPage();
document
.add(new Paragraph(
"com.lowagie.text.pdf.PdfPTable - Cells kept together\n\n"));
datatable.setConvert2pdfptable(true);
document.add(datatable);
} catch (Exception e) {
e.printStackTrace();
}
// we close the document
document.close();
}
}

附录：

http://www.lowagie.com/iText/tutorial/index.html （iText教程） 　　http://www.lowagie.com/iText/download.html （iText核心包文件） 　　http://sourceforge.net/project/showfiles.php?group_id=15255&release_id=167948 （iTextArea 包文件）