apache poi导出Excel或Pdf文件

package com.infrastructure.project.common.util;

import java.awt.Color;
import java.io.File;
import java.io.FileOutputStream;
import java.util.List;

import com.infrastructure.project.common.SysConstant;
import com.lowagie.text.Cell;
import com.lowagie.text.Document;
import com.lowagie.text.Element;
import com.lowagie.text.Font;
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;

public class ExportPdfUtil {
	public static void exportPdf(String fileName,String filePath,List listLable ,List listData) {
		Document document = new Document(PageSize.A4.rotate(), 50, 50, 50, 50);
		try {
			File file = new File(filePath);
			BaseFont bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED); 
			Font FontChinese = new Font(bfChinese, 12, Font.NORMAL);
			Font FontChina = new Font(bfChinese, 24, Font.NORMAL);
			if (!file.exists()) {
				file.mkdirs();
			}
			PdfWriter.getInstance(document, new FileOutputStream(filePath+fileName+SysConstant.nameSuffix.NAMESUFFIX_PDF));
			document.open();
			Table datatable = new Table(listLable.size());
			datatable.setWidth(100);
			datatable.setPadding(3);
			Cell cell = new Cell(new Phrase(fileName,FontChina));
			
			cell.setHorizontalAlignment(Element.ALIGN_CENTER);
			cell.setLeading(30);
			cell.setColspan(listLable.size());
			cell.setBorder(Rectangle.NO_BORDER);
			cell.setBackgroundColor(new Color(0xC0, 0xC0, 0xC0));
			datatable.addCell(cell);
			datatable.setBorderWidth(2);
			datatable.setAlignment(1);
			for(int i =0;i<listLable.size();i++){
				datatable.addCell(new Paragraph(listLable.get(i).toString(),FontChinese));
			}
			datatable.endHeaders();
			datatable.setBorderWidth(1);
			for (int j = 0; j < listData.size(); j++) {
				List a = (List) listData.get(j);
				for(int o = 0;o<a.size();o++){
					datatable.addCell(new Paragraph(a.get(o) == null ?"":a.get(o).toString(),FontChinese));
				}
			}

			document.add(datatable);
		} catch (Exception e) {
			e.printStackTrace();
		}
		document.close();
	}
}

	    	

package poi.itext;
import java.io.FileOutputStream;
import java.io.IOException;
import java.awt.Color;
import com.lowagie.text.*;
import com.lowagie.text.pdf.*;
import com.lowagie.text.pdf.BaseFont;
/**
 * 创建Pdf文档
 * @author Administrator
 *
 */
public class HelloPdf
{
    public static void main(String[] args)throws Exception
    {
        BaseFont bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);
        Font FontChinese = new Font(bfChinese, 12, Font.NORMAL);
        // 第一步，创建document对象
        Rectangle rectPageSize = new Rectangle(PageSize.A4);
        
        //下面代码设置页面横置
        //rectPageSize = rectPageSize.rotate();
        
        //创建document对象并指定边距
        Document doc = new Document(rectPageSize,50,50,50,50);
        Document document = new Document();
        try
        {
            // 第二步,将Document实例和文件输出流用PdfWriter类绑定在一起
            //从而完成向Document写，即写入PDF文档
            PdfWriter.getInstance(document,new FileOutputStream("src/poi/itext/HelloWorld.pdf"));
            //第3步,打开文档
            document.open();
            //第3步,向文档添加文字. 文档由段组成
            document.add(new Paragraph("Hello World"));
            Paragraph par = new Paragraph("世界你好",FontChinese);
            document.add(par);
            PdfPTable table = new PdfPTable(3);
            for(int i=0;i<12;i++)
            {
                if (i == 0)
                {
                    PdfPCell cell = new PdfPCell();
                    cell.setColspan(3);
                    cell.setBackgroundColor(new Color(180,180,180));
                    cell.addElement(new Paragraph("表格头" , FontChinese));
                    table.addCell(cell);
                }
                else
                {
                    PdfPCell cell = new PdfPCell();
                    cell.addElement(new Paragraph("表格内容" , FontChinese));
                    table.addCell(cell);
                }
            }
            document.add(table);
        }
        catch (DocumentException de)
        {
            System.err.println(de.getMessage());
        }
        catch (IOException ioe)
        {
            System.err.println(ioe.getMessage());
        }
        //关闭document
        document.close();
        
        System.out.println("生成HelloPdf成功！");
     }
    
    
}