java使用IText生成表格到PDF中
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1.生成pdf的表格
package com.me.test;import java.awt.Color;import java.io.FileOutputStream;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.Table;import com.lowagie.text.pdf.BaseFont;import com.lowagie.text.pdf.PdfWriter;/** * 生成表格到硬盘 * * @author admin * */public class ITextTest {public void getTable(){try {Document document = new Document(PageSize.A4, 20, 20, 20, 20);PdfWriter writer = PdfWriter.getInstance(document,new FileOutputStream("f:/IText/table.pdf"));document.open();BaseFont bfChinese;bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H",false);Font fontChinese = new Font(bfChinese, 9, Font.BOLD, Color.black);Table t = new Table(12, 2);// t.setBorderColor(new Color(220, 255, 100));int width[] = { 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, };t.setWidths(width);t.setWidth(100); // 占页面宽度 %t.setPadding(1);t.setSpacing(0);t.setBorderWidth(2);Cell c1 = new Cell("header1");t.addCell(c1);c1 = new Cell("Header2");t.addCell(c1);c1 = new Cell("Header3");t.addCell(c1);c1 = new Cell("Header4");t.addCell(c1);c1 = new Cell("Header5");t.addCell(c1);c1 = new Cell("Header6");t.addCell(c1);c1 = new Cell("Header7");t.addCell(c1);c1 = new Cell("Header8");t.addCell(c1);c1 = new Cell("Header9");t.addCell(c1);c1 = new Cell("Header10");t.addCell(c1);c1 = new Cell("Header11");t.addCell(c1);c1 = new Cell("Header12");t.addCell(c1);int k = 0;while (k < 3) {for (int q = 0; q < 12; q++) {Paragraph par = new Paragraph(k + "-" + q, fontChinese);c1 = new Cell(par);c1.setHorizontalAlignment(Element.ALIGN_CENTER);t.addCell(c1);}k++;}for (int i = 0; i < 24; i++) {String num = Integer.toString(i);c1.setHorizontalAlignment(Element.ALIGN_CENTER);c1 = new Cell(num);c1.setColspan(2);c1.setRowspan(1);t.addCell(c1);}c1 = new Cell("26");t.addCell(c1);document.add(t);// 创建一个新页面document.newPage();document.add(t);document.close();} catch (Exception e2) {e2.printStackTrace();}}}?2.将网页中的信息，用pdf格式文件弹出
package com.me.test;import java.io.ByteArrayOutputStream;import java.io.IOException;import java.io.OutputStream; import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse; import com.itextpdf.text.Document;import com.itextpdf.text.DocumentException;import com.itextpdf.text.Paragraph;import com.itextpdf.text.pdf.PdfWriter;/** * 在网页上获取信息，查看pdf格式文件 * @author admin * */public class PdfServlet extends HttpServlet { /** * @see HttpServlet#service(HttpServletRequest request, HttpServletResponse response) */ protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { try { // Get the text that will be added to the PDF String text = request.getParameter("text"); if (text == null || text.trim().length() == 0) { text = "You didn't enter any text."; } // step 1 Document document = new Document(); // step 2 ByteArrayOutputStream baos = new ByteArrayOutputStream(); PdfWriter.getInstance(document, baos); // step 3 document.open(); // step 4 document.add(new Paragraph(String.format( "You have submitted the following text using the %s method:", request.getMethod()))); document.add(new Paragraph(text)); // step 5 document.close(); // setting some response headers response.setHeader("Expires", "0"); response.setHeader("Cache-Control", "must-revalidate, post-check=0, pre-check=0"); response.setHeader("Pragma", "public"); // setting the content type response.setContentType("application/pdf"); // the contentlength response.setContentLength(baos.size()); // write ByteArrayOutputStream to the ServletOutputStream OutputStream os = response.getOutputStream(); baos.writeTo(os); os.flush(); os.close(); } catch(DocumentException e) { throw new IOException(e.getMessage()); } } /** * Serial version UID. */ private static final long serialVersionUID = 6067021675155015602L; }?3.在网页上直接以pdf的形式显示
package com.me.test;import java.io.IOException;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import com.lowagie.text.Document;import com.lowagie.text.DocumentException;import com.lowagie.text.pdf.PdfWriter;import com.lowagie.text.Element;import com.lowagie.text.PageSize;import com.lowagie.text.pdf.PdfPTable;/** * 直接在网页中生成PDF格式 查看 *//** * Hello World example as a Servlet. * * @author blowagie */public class HelloWorldServlet extends HttpServlet { /** * */private static final long serialVersionUID = 3710911016238241119L;/** * Returns a PDF, RTF or HTML document. * * @see javax.servlet.http.HttpServlet#doGet(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse) */ public void doGet (HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { System.out.println("document.add(BigTable)"); // step1 Document document = new Document(PageSize.A4.rotate(), 10, 10, 10, 10); //定义纸张类型及方向,页边距 // step 1 try { // step 2: we set the ContentType and create an instance of the corresponding Writer response.setContentType("application/pdf"); PdfWriter.getInstance(document, response.getOutputStream()); // step3 document.open(); // step4 定义表格填充内容 String[] bogusData = { "M0065920", "SL", "FR86000P", "PCGOLD", "119000", "96 06", "2001-08-13", "4350", "6011648299", "FLFLMTGP", "153", "119000.00" }; int NumColumns = 12; //定义表格列数 PdfPTable datatable = new PdfPTable(NumColumns); //创建新表. int headerwidths[] = { 9, 4, 8, 10, 8, 11, 9, 7, 9, 10, 4, 10 }; // percentage 定义表格头宽度 datatable.setWidths(headerwidths); datatable.setWidthPercentage(100); // percentage datatable.getDefaultCell().setPadding(3); datatable.getDefaultCell().setBorderWidth(2); datatable.getDefaultCell().setHorizontalAlignment(Element.ALIGN_CENTER); //以下是填充表头 datatable.addCell("Clock #"); datatable.addCell("Trans Type"); datatable.addCell("Cusip"); datatable.addCell("Long Name"); datatable.addCell("Quantity"); datatable.addCell("Fraction Price"); datatable.addCell("Settle Date"); datatable.addCell("Portfolio"); datatable.addCell("ADP Number"); datatable.addCell("Account ID"); datatable.addCell("Reg Rep ID"); datatable.addCell("Amt To Go "); datatable.setHeaderRows(1); // this is the end of the table header datatable.getDefaultCell().setBorderWidth(1); for (int i = 1; i < 750; i++) { if (i % 2 == 1) { datatable.getDefaultCell().setGrayFill(0.9f); } for (int x = 0; x < NumColumns; x++) { datatable.addCell(bogusData[x]); } if (i % 2 == 1) { datatable.getDefaultCell().setGrayFill(0.0f); } } document.add(datatable); //加载新表 } catch(DocumentException de) { de.printStackTrace(); System.err.println("document: " + de.getMessage()); } // step 5: we close the document (the outputstream is also closed internally) document.close(); }}?