Java Itext 生成PDF文件

利用Java Itext生成PDF文件并导出，实现效果如下：

Java Itext 生成PDF文件-LMLPHP

PDFUtil.java

package com.jeeplus.modules.order.util;

import java.io.OutputStream;

import java.math.BigDecimal;

import java.net.URL;

import java.text.DecimalFormat;

import java.text.SimpleDateFormat;

import java.util.ArrayList;

import java.util.Date;

import java.util.List;

import javax.servlet.http.HttpServletResponse;

import com.itextpdf.text.BaseColor;

import com.itextpdf.text.Chunk;

import com.itextpdf.text.Document;

import com.itextpdf.text.Element;

import com.itextpdf.text.Font;

import com.itextpdf.text.Image;

import com.itextpdf.text.PageSize;

import com.itextpdf.text.Paragraph;

import com.itextpdf.text.Phrase;

import com.itextpdf.text.pdf.BaseFont;

import com.itextpdf.text.pdf.PdfContentByte;

import com.itextpdf.text.pdf.PdfPCell;

import com.itextpdf.text.pdf.PdfPTable;

import com.itextpdf.text.pdf.PdfWriter;

import com.jeeplus.common.utils.Encodes;

import com.jeeplus.common.utils.StringUtils;

import com.jeeplus.modules.order.entity.OrderHeader;

import com.jeeplus.modules.order.entity.OrderLine;

import com.jeeplus.modules.order.service.PDFService;

import com.jeeplus.modules.sys.utils.UserUtils;

public class PDFUtil {

  /**

   *

   * @param exhibitionName 展会名称

   * @param orders 订单

   * @param REMITTANCE_UNIT 收款单位

   * @param REMITTANCE_BANK 收款银行

   * @param REMITTANCE_ACCOUNT 收款账号

   * @param SEAL_PICTURE_NAME 印章名称默认为深圳中智兴

   * @param payUrl 系统网址

   * @param response

   * @throws Exception author:xiaofei.xian 日期：2018年5月30日 上午11:29:57

   */

  public static void createPDF(String exhibitionName, List<OrderHeader> orders, String REMITTANCE_UNIT, String REMITTANCE_BANK,

      String REMITTANCE_ACCOUNT, String SEAL_PICTURE_NAME, String payUrl, HttpServletResponse response) throws Exception {

    // 生成PDF

    Document document = new Document(PageSize.A4);

    BaseFont bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);

    Font fontChinese = new Font(bfChinese, 12, Font.NORMAL);

    Font fontMoney = new Font(bfChinese, 13, Font.BOLD, BaseColor.RED);

    Font BlodFont = new Font(bfChinese, 12, Font.BOLD, BaseColor.BLACK);

    // 写入器

    PdfWriter writer = PdfWriter.getInstance(document, response.getOutputStream());

    // 只读

    writer.setEncryption(null, null, PdfWriter.ALLOW_PRINTING, PdfWriter.STANDARD_ENCRYPTION_128);

    // 通过PDF页面事件模式添加文字水印功能

    writer.setPageEvent(new TextWaterMarkPdfPageEvent(REMITTANCE_UNIT));

    // 添加页脚功能

    document.open();

    PdfPTable pdfPTable = new PdfPTable(1);

    PdfFooterEvent footerTable = new PdfFooterEvent(pdfPTable, payUrl);

    footerTable.setTableFooter(writer);

    document.add(pdfPTable);

    // 添加PDF属性

    document.open();

    Paragraph pph1 = new Paragraph("预租确认回执", new Font(bfChinese, 20, Font.BOLD, BaseColor.BLACK));

    pph1.setAlignment(Element.ALIGN_CENTER);

    pph1.setSpacingAfter(10);

    pph1.setSpacingBefore(5);

    document.add(pph1);

    // 6列的表.

    PdfPTable table = new PdfPTable(6);

    table.setTotalWidth(500);

    table.setLockedWidth(true);

    table.setHorizontalAlignment(Element.ALIGN_CENTER);

    // 第一行

    PdfPCell cell1 = new PdfPCell(new Phrase("展会名称：" + exhibitionName, fontChinese));

    cell1.setColspan(6);

    table.addCell(cell1);

    StringBuffer boothNums = new StringBuffer();

    for (OrderHeader orderHeader : orders) {

      // 获取订单信息

      boothNums.append(orderHeader.getExName() + "，");

    }

    // 第二行

    PdfPCell cell2 = new PdfPCell(new Phrase("展位编号：" + boothNums.toString().subSequence(0, boothNums.length() - 1), fontChinese));

    cell2.setColspan(6);

    table.addCell(cell2);

    // 第三行

    PdfPCell cell3 = new PdfPCell(new Phrase("下单人：" + UserUtils.get(orders.get(0).getCreateBy()).getName(), fontChinese));

    cell3.setColspan(6);

    cell3.setHorizontalAlignment(Element.ALIGN_RIGHT);

    table.addCell(cell3);

    // 第四行

    PdfPCell cell4_1 = new PdfPCell(new Phrase("名称", fontChinese));

    PdfPCell cell4_2 = new PdfPCell(new Phrase("规格", fontChinese));

    PdfPCell cell4_3 = new PdfPCell(new Phrase("单价", fontChinese));

    PdfPCell cell4_4 = new PdfPCell(new Phrase("押金", fontChinese));

    PdfPCell cell4_5 = new PdfPCell(new Phrase("数量", fontChinese));

    PdfPCell cell4_6 = new PdfPCell(new Phrase("小计", fontChinese));

    table.addCell(cell4_1);

    table.addCell(cell4_2);

    table.addCell(cell4_3);

    table.addCell(cell4_4);

    table.addCell(cell4_5);

    table.addCell(cell4_6);

    BigDecimal total = BigDecimal.ZERO;

    List<OrderLine> orderLines = new ArrayList<OrderLine>();

    for (OrderHeader orderHeader : orders) {

      orderLines = orderHeader.getOrderLines();

      for (OrderLine orderLine : orderLines) {

        cell4_1 = new PdfPCell(new Phrase(orderLine.getGoodsName(), fontChinese));

        cell4_2 = new PdfPCell(new Phrase(orderLine.getSpecifications(), fontChinese));

        cell4_3 = new PdfPCell(new Phrase(String.valueOf(orderLine.getUnitPrice()), fontChinese));

        DecimalFormat df1 = new DecimalFormat("0.00");

        String str = df1.format(orderLine.getForegift().multiply(orderLine.getBuyNum().subtract(orderLine.getEditForegiftPrice())));

        cell4_4 = new PdfPCell(new Phrase(str, fontChinese));

        cell4_5 = new PdfPCell(new Phrase(String.valueOf(orderLine.getBuyNum()), fontChinese));

        cell4_6 =

            new PdfPCell(new Phrase(String.valueOf((orderLine.getUnitPrice().add(orderLine.getForegift())).multiply(orderLine.getBuyNum())

                .subtract(orderLine.getEditFeePrice().subtract(orderLine.getEditForegiftPrice()))), fontChinese));

        total = total.add((orderLine.getUnitPrice().add(orderLine.getForegift())).multiply(orderLine.getBuyNum())

            .subtract(orderLine.getEditFeePrice().subtract(orderLine.getEditForegiftPrice())));

        table.addCell(cell4_1);

        table.addCell(cell4_2);

        table.addCell(cell4_3);

        table.addCell(cell4_4);

        table.addCell(cell4_5);

        table.addCell(cell4_6);

      }

    }

    // 第六行

    PdfPCell cell6 = new PdfPCell(new Phrase("总计：" + total, fontMoney));

    cell6.setColspan(6);

    table.addCell(cell6);

    // 第七行

    PdfPCell cell7_1 = new PdfPCell(new Phrase("收款单位:", fontChinese));

    PdfPCell cell7_2 = new PdfPCell(new Phrase(REMITTANCE_UNIT, fontChinese));

    cell7_1.setHorizontalAlignment(Element.ALIGN_LEFT);

    cell7_2.setHorizontalAlignment(Element.ALIGN_LEFT);

    cell7_1.setColspan(2);

    cell7_2.setColspan(4);

    table.addCell(cell7_1);

    table.addCell(cell7_2);

    cell7_1 = new PdfPCell(new Phrase("开户行:", fontChinese));

    cell7_2 = new PdfPCell(new Phrase(REMITTANCE_BANK, fontChinese));

    cell7_1.setHorizontalAlignment(Element.ALIGN_LEFT);

    cell7_2.setHorizontalAlignment(Element.ALIGN_LEFT);

    cell7_1.setColspan(2);

    cell7_2.setColspan(4);

    table.addCell(cell7_1);

    table.addCell(cell7_2);

    cell7_1 = new PdfPCell(new Phrase("账号:", fontChinese));

    cell7_2 = new PdfPCell(new Phrase(REMITTANCE_ACCOUNT, fontMoney));

    cell7_1.setHorizontalAlignment(Element.ALIGN_LEFT);

    cell7_2.setHorizontalAlignment(Element.ALIGN_LEFT);

    cell7_1.setColspan(2);

    cell7_2.setColspan(4);

    table.addCell(cell7_1);

    table.addCell(cell7_2);

    // 第十行

    PdfPCell cell10 = new PdfPCell(new Phrase(REMITTANCE_UNIT, fontChinese));

    cell10.setHorizontalAlignment(Element.ALIGN_RIGHT);

    cell10.setColspan(6);

    table.addCell(cell10);

    document.add(table);

    // 默认为深圳中智兴

    if (StringUtils.isEmpty(SEAL_PICTURE_NAME)) {

      SEAL_PICTURE_NAME = "zzx_seal.png";

    }

    // 读入并设置印章图片

    URL resource = PDFService.class.getResource("/sealimg/" + SEAL_PICTURE_NAME);

    Image image = Image.getInstance(resource);

    image.setScaleToFitLineWhenOverflow(true);

    image.setAlignment(Element.ALIGN_RIGHT);

    float x = table.getTotalWidth();

    float y = 750 - table.getTotalHeight();

    while (y < 0) {

      y = 750 - (table.getTotalHeight() - 750);

    }

    image.setAbsolutePosition(x - 60, y);

    image.scaleAbsolute(100, 100);

    PdfContentByte pcb = writer.getDirectContentUnder();

    pcb.addImage(image);

    document.add(image);

    document.add(Chunk.NEWLINE);

    // 特别提醒

    Paragraph paragraphRemark = new Paragraph();

    Font remarkFont = new Font(bfChinese, 10, Font.NORMAL);

    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm");

    paragraphRemark.add(new Chunk("特别提醒:", BlodFont));

    paragraphRemark.add(Chunk.NEWLINE);

    paragraphRemark.add(new Chunk("1.您的汇款识别码为", remarkFont));

    paragraphRemark.add(new Chunk(orders.get(0).getRemitCode(), fontMoney));

    paragraphRemark.add(new Chunk("。请将此识别码填写到汇款单【附言】栏内(仅填写此识别码)，如未填写会影响订单确认时间。", remarkFont));

    paragraphRemark.add(Chunk.NEWLINE);

    paragraphRemark.add(Chunk.NEWLINE);

    paragraphRemark.add(new Chunk("2.请将待支付款项在", remarkFont));

    paragraphRemark.add(new Chunk(sdf.format(orders.get(0).getCancelDate()), fontMoney));

    paragraphRemark.add(new Chunk("前通过银行汇到以上指定账号，请您尽快汇清款项，逾期订单将自动取消，汇款后请等待确认收款，到账周期一般为1-3个工作日。", remarkFont));

    paragraphRemark.add(Chunk.NEWLINE);

    paragraphRemark.add(Chunk.NEWLINE);

    paragraphRemark.add(new Chunk("4.汇款金额请与应付金额保持一致，请勿多汇款或者少汇款。", remarkFont));

    paragraphRemark.add(Chunk.NEWLINE);

    document.add(paragraphRemark);

    sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm");

    pph1 = new Paragraph("打印日期：" + sdf.format(new Date()), fontChinese);

    pph1.setAlignment(Element.ALIGN_RIGHT);

    pph1.setSpacingBefore(20);

    document.add(pph1);

    response.setContentType("application/pdf; charset=utf-8");

    response.setHeader("Content-Disposition", "attachment; filename=" + Encodes.urlEncode("预租确认回执") + ".pdf");

    document.close();

    writer.close();

    OutputStream out = response.getOutputStream();

    out.flush();

    response.flushBuffer();

  }

}

水印事件TextWaterMarkPdfPageEvent.java

package com.jeeplus.modules.order.util;

import java.io.IOException;

import com.itextpdf.text.BaseColor;

import com.itextpdf.text.Document;

import com.itextpdf.text.DocumentException;

import com.itextpdf.text.Element;

import com.itextpdf.text.Font;

import com.itextpdf.text.Phrase;

import com.itextpdf.text.pdf.BaseFont;

import com.itextpdf.text.pdf.ColumnText;

import com.itextpdf.text.pdf.PdfContentByte;

import com.itextpdf.text.pdf.PdfPageEventHelper;

import com.itextpdf.text.pdf.PdfWriter;

/**

 * PDF 水印事件

 *

 * @author xiaofei.xian 日期：2018年5月30日 上午11:25:18

 */

public class TextWaterMarkPdfPageEvent extends PdfPageEventHelper {

  private String waterMarkText;

  public TextWaterMarkPdfPageEvent(String waterMarkText) {

    this.waterMarkText = waterMarkText;

  }

  @Override

  public void onEndPage(PdfWriter writer, Document document) {

    try {

      float pageWidth = document.right() + document.left();// 获取pdf内容正文页面宽度

      float pageHeight = document.top() + document.bottom();// 获取pdf内容正文页面高度

      // 设置水印字体格式

      BaseFont base = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);

      Font waterMarkFont = new Font(base, 15, Font.BOLD, new BaseColor(230, 230, 230));

      PdfContentByte waterMarkPdfContent = writer.getDirectContentUnder();

      Phrase phrase = new Phrase(waterMarkText, waterMarkFont);

      ColumnText.showTextAligned(waterMarkPdfContent, Element.ALIGN_CENTER, phrase, pageWidth * 0.25f, pageHeight * 0.2f, 45);

      ColumnText.showTextAligned(waterMarkPdfContent, Element.ALIGN_CENTER, phrase, pageWidth * 0.25f, pageHeight * 0.5f, 45);

      ColumnText.showTextAligned(waterMarkPdfContent, Element.ALIGN_CENTER, phrase, pageWidth * 0.25f, pageHeight * 0.8f, 45);

      ColumnText.showTextAligned(waterMarkPdfContent, Element.ALIGN_CENTER, phrase, pageWidth * 0.65f, pageHeight * 0.2f, 45);

      ColumnText.showTextAligned(waterMarkPdfContent, Element.ALIGN_CENTER, phrase, pageWidth * 0.65f, pageHeight * 0.5f, 45);

      ColumnText.showTextAligned(waterMarkPdfContent, Element.ALIGN_CENTER, phrase, pageWidth * 0.65f, pageHeight * 0.8f, 45);

    } catch (DocumentException de) {

      de.printStackTrace();

    } catch (IOException de) {

      de.printStackTrace();

    }

  }

}

页脚事件PdfFooterEvent.java

package com.jeeplus.modules.order.util;

import java.io.IOException;

import com.itextpdf.text.BaseColor;

import com.itextpdf.text.Document;

import com.itextpdf.text.DocumentException;

import com.itextpdf.text.Font;

import com.itextpdf.text.Paragraph;

import com.itextpdf.text.pdf.BaseFont;

import com.itextpdf.text.pdf.PdfPCell;

import com.itextpdf.text.pdf.PdfPTable;

import com.itextpdf.text.pdf.PdfPageEventHelper;

import com.itextpdf.text.pdf.PdfWriter;

/**

 * PDF 页眉事件

 *

 * @author xiaofei.xian 日期：2018年5月30日 上午11:25:00

 */

public class PdfFooterEvent extends PdfPageEventHelper {

  public static PdfPTable footer;

  public static String webUrl;

  public PdfFooterEvent(PdfPTable footer, String webUrl) {

    PdfFooterEvent.footer = footer;

    PdfFooterEvent.webUrl = webUrl;

  }

  @Override

  public void onEndPage(PdfWriter writer, Document document) {

    // 把页脚表格定位

    footer.writeSelectedRows(0, -1, 38, 30, writer.getDirectContent());

  }

  /**

   * 页脚是文字

   *

   * @param writer

   * @param songti09

   * @throws IOException

   * @throws DocumentException

   */

  public void setTableFooter(PdfWriter writer) throws DocumentException, IOException {

    PdfPTable table = new PdfPTable(1);

    table.setTotalWidth(520f);

    PdfPCell cell = new PdfPCell();

    cell.setBorder(1);

    String string =

        "本回执仅做财务付款申请凭证，它用无效                                                                                         网址：" + webUrl;

    BaseFont bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);

    Font FontChinese = new Font(bfChinese, 10, Font.NORMAL);

    FontChinese.setColor(new BaseColor(150, 150, 150));

    Paragraph p = new Paragraph(string, FontChinese);

    cell.setPaddingLeft(10f);

    cell.setPaddingTop(-2f);

    cell.addElement(p);

    table.addCell(cell);

    PdfFooterEvent event = new PdfFooterEvent(table, webUrl);

    writer.setPageEvent(event);

  }

}