1、pom依赖
首先先引入咱们需要的pom依赖，我这里只粘贴pdf的吧，lombok和hutool经常用我就不粘贴了。
2、生成pdf，模板和图片及动态生成表格
我这个没有搞页眉，只搞了页脚，设置页眉/页脚和水印的类我会在最后粘贴出来，因为这几个案例用的都是一个配置类。
2.1实体类
package com.example.demo.domain;
import lombok.Data;
import lombok.experimental.Accessors;
import java.math.BigDecimal;
@Data
@Accessors(chain = true)
public class DuizhangDomain {
private String jg;
private Integer ydz;
private Integer wdz;
private BigDecimal dzl;
}
package com.example.demo.domain;
import lombok.Data;
import lombok.experimental.Accessors;
import java.io.Serializable;
@Data
@Accessors(chain = true)
public class YqTable implements Serializable {
private String jg;
private Integer yqs;
}
2.2生成pdf代码
import cn.hutool.core.date.DateUtil;
import com.example.demo.domain.DuizhangDomain;
import com.example.demo.domain.YqTable;
import com.example.demo.pdf.phantom.App;
import com.example.demo.pdf.phantom.PageEvent;
import com.itextpdf.text.*;
import com.itextpdf.text.pdf.*;
import freemarker.template.TemplateException;
import org.springframework.core.io.ClassPathResource;
import javax.servlet.http.HttpServletResponse;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.List;
/**
* 根据模板填充数据及图片，动态生成数据列表
*/
public class CreatePdfEchrtsAndTableMain2 {
private final static String TITLE = "这个是标题，可有可无";
public void createPdfFile(HttpServletResponse response) throws IOException, DocumentException, TemplateException {
//设置请求返回类型
response.setHeader("Content-Disposition", "attachment; filename=测试.pdf");
OutputStream outputStream = response.getOutputStream();
//模板路径，放到项目里用这个ClassPathResource
ClassPathResource classPathResource = new ClassPathResource("templates/test1.pdf");
InputStream inputStream = classPathResource.getInputStream();
PdfReader reader = new PdfReader(inputStream);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
PdfStamper ps = new PdfStamper(reader, bos);
//设置字体
final BaseFont font = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);
ArrayList<BaseFont> fontList = new ArrayList<>();
fontList.add(font);
//提取表单,这个是模板画好的文本框
AcroFields s = ps.getAcroFields();
s.setSubstitutionFonts(fontList);
s.setFieldProperty("jrfk","textfont",font,null);
s.setFieldProperty("bjzs","textfont",font,null);
s.setFieldProperty("type","textfont",font,null);
s.setFieldProperty("createTime","textfont",font,null);
s.setFieldProperty("title","textfont",font,null);
s.setField("jrfk","10");
s.setField("bjzs","20");
s.setField("type","日报");
s.setField("createTime", DateUtil.now());
s.setField("title", TITLE);
//添加图片
PdfContentByte cb = ps.getOverContent(1);
//添加logo
Rectangle logo = s.getFieldPositions("logo").get(0).position;
Image logoImage = Image.getInstance("https://img1.baidu.com/it/u=3646261857,3326755268&fm=253&app=138&size=w931&n=0&f=JPG&fmt=auto?sec=1668186000&t=20050fc88fc3feb1f9d28392f4595ec6");
//根据域的大小缩放图片，我这里宽度在原有的域基础上加了100，你们可以自己调节
logoImage.scaleToFit(logo.getWidth() + 100,logo.getHeight());
logoImage.setAlignment(Image.MIDDLE);
logoImage.setAbsolutePosition(logo.getLeft(),logo.getBottom());
cb.addImage(logoImage);
//获取统计图
//获取域
Rectangle rlt = s.getFieldPositions("rlt").get(0).position;
//热力图
Image rltImage = Image.getInstance("https://img0.baidu.com/it/u=4043177345,1055141017&fm=253&app=138&size=w931&n=0&f=PNG&fmt=auto?sec=1668186000&t=8cfdc5c95cc0070eb91946d780ee8dc3");
//根据域大小设置缩放图片
rltImage.scaleToFit(rlt.getWidth() + 100,rlt.getHeight());
// 设置居中
rltImage.setAlignment(Image.MIDDLE);
//绝对定位
rltImage.setAbsolutePosition(rlt.getLeft(),rlt.getBottom());
//图片旋转，这个可以将图片进行一个旋转，看自己需求
// rltImage.setRotationDegrees(90);
cb.addImage(rltImage);
//按机构统计图
//这个是生成echarts的类，如果需要生成echarts可以去看我的另一个文章，上面前言已经提到了
App app1 = new App();
byte[] echarts1 = app1.createEcharts("ajg.ftl");
Image ajgImage = Image.getInstance(echarts1);
Rectangle ajg = s.getFieldPositions("ajg").get(0).position;
// 根据域大小设置缩放图片
ajgImage.scaleToFit(ajg.getWidth(),400);
// 设置居中
ajgImage.setAlignment(Image.MIDDLE);
// 绝对定位
ajgImage.setAbsolutePosition(ajg.getLeft(),ajg.getBottom());
cb.addImage(ajgImage);
//按机构排名，这个是在图片的基础上还要添加数据，这个模板可以画好
for (int i = 1; i <= 3; i++) {
s.setFieldProperty("ajg" + i,"textfont",font,null);
s.setField("ajg" + i,"机构" + i);
}
App app = new App();
byte[] echarts = app.createEcharts("option.ftl");
//按业务
Rectangle ayw = s.getFieldPositions("ayw").get(0).position;
Image aywImage = Image.getInstance(echarts);
// 设根据域大小设置缩放图片
aywImage.scaleToFit(ayw.getWidth(), 400);
// 设置居中
aywImage.setAlignment(Image.MIDDLE);
// 绝对定位
aywImage.setAbsolutePosition(ayw.getLeft(),ayw.getBottom());
cb.addImage(aywImage);
//按业务排名
for (int i = 1; i <= 3; i++) {
s.setFieldProperty("ayw" + i,"textfont",font,null);
s.setField("ayw" + i,"机构" + i);
}
//按场合
Rectangle acj = s.getFieldPositions("acj").get(0).position;
Image acjImage = Image.getInstance(echarts);
// 设根据域大小设置缩放图片
acjImage.scaleToFit(acj.getWidth(), 400);
// 设置居中
acjImage.setAlignment(Image.MIDDLE);
// 绝对定位
acjImage.setAbsolutePosition(acj.getLeft(),acj.getBottom());
cb.addImage(acjImage);
//按场景排名
for (int i = 1; i <= 3; i++) {
s.setFieldProperty("acj" + i,"textfont",font,null);
s.setField("acj" + i,"机构" + i);
}
//按等级
Rectangle adj = s.getFieldPositions("adj").get(0).position;
Image adjImage = Image.getInstance(echarts);
// 设根据域大小设置缩放图片
adjImage.scaleToFit(adj.getWidth(),400);
// 设置居中
adjImage.setAlignment(Image.MIDDLE);
// 绝对定位
adjImage.setAbsolutePosition(adj.getLeft(),adj.getBottom());
cb.addImage(adjImage);
//按场景排名
for (int i = 1; i <= 3; i++) {
s.setFieldProperty("adj" + i,"textfont",font,null);
s.setField("adj" + i,"机构" + i);
}
ps.setFormFlattening(true);
ps.close();
//*******************填充编辑好后的pdf**************
reader = new PdfReader(bos.toByteArray());
Rectangle pageSize = reader.getPageSize(1);
Document document = new Document(pageSize);
PdfWriter writer = PdfWriter.getInstance(document, outputStream);
writer.setPageEvent(new PageEvent());
// 打开文档
document.open();
PdfContentByte cbUnder = writer.getDirectContentUnder();
PdfImportedPage pageTemplate = writer.getImportedPage(reader, 1);
cbUnder.addTemplate(pageTemplate, 0, 0);
//重新开一页面
document.newPage();
createTable(writer,document);
// document.newPage();
createTableYq(writer,document);
document.close();
outputStream.close();
}
//为一个表格添加内容
public PdfPCell createSetCell(String value,Font font){
PdfPCell cell = new PdfPCell();
cell.setPhrase(new Phrase(value,font));
cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
cell.setHorizontalAlignment(Element.ALIGN_CENTER);
return cell;
}
//添加表格
public void createTable(PdfWriter writer,Document document) throws DocumentException, IOException {
PdfPTable table = new PdfPTable(new float[] { 30, 80, 50, 50, 50});
table.setTotalWidth(520);
table.setPaddingTop(500);
table.setLockedWidth(true);
table.setHorizontalAlignment(Element.ALIGN_CENTER);//居中
table.writeSelectedRows(0, -1,500,800,writer.getDirectContentUnder());
//每页都显示表头,输入几就是第几行的表头固定
table.setHeaderRows(2);
table.setHeaderRows(3);
//定义数据的字体
BaseFont baseFont = BaseFont.createFont("STSong-Light","UniGB-UCS2-H",BaseFont.NOT_EMBEDDED);
Font textFont = new Font(baseFont, 10, Font.NORMAL);
PdfPCell cell = new PdfPCell(new Paragraph(" ", textFont));
cell.setHorizontalAlignment( Element.ALIGN_LEFT);
cell.setVerticalAlignment(Element.ALIGN_BOTTOM);
cell.setBorder(Rectangle.NO_BORDER);
cell.setColspan(5);
table.addCell(cell);
//表头信息
PdfPCell heandCell = new PdfPCell();
heandCell.setRowspan(1);
heandCell.setColspan(5);
heandCell.setFixedHeight(60);
heandCell.setVerticalAlignment(Element.ALIGN_MIDDLE);
heandCell.setHorizontalAlignment(Element.ALIGN_CENTER);
heandCell.setPhrase(new Phrase(TITLE + "对账情况表",textFont));
table.addCell(heandCell);
//表字段
String title[] = {"序号","机构","已对账","未对账","对账率%"};
for (int i = 0; i < title.length; i++) {
PdfPCell heardCell = new PdfPCell();
heardCell.setVerticalAlignment(Element.ALIGN_MIDDLE);
heardCell.setHorizontalAlignment(Element.ALIGN_CENTER);
heardCell.setPhrase(new Phrase(title[i], textFont));
heardCell.setMinimumHeight(20);
table.addCell(heardCell);
}
//列表数据
List<DuizhangDomain> duizhangDomains = new ArrayList<>();
for (int i = 1; i <= 1000; i++) {
DuizhangDomain duizhangDomain = new DuizhangDomain();
duizhangDomain.setJg("机构" + i).setYdz(i).setWdz(i).setDzl(new BigDecimal(i));
duizhangDomains.add(duizhangDomain);
}
for (int i = 0; i < duizhangDomains.size(); i++) {
PdfPCell setCell1 = createSetCell((i + 1) + "", textFont);
PdfPCell setCell2 = createSetCell(duizhangDomains.get(i).getJg(), textFont);
PdfPCell setCell3 = createSetCell(duizhangDomains.get(i).getYdz().toString(), textFont);
PdfPCell setCell4 = createSetCell(duizhangDomains.get(i).getWdz().toString(), textFont);
PdfPCell setCell5 = createSetCell(duizhangDomains.get(i).getDzl() + "%", textFont);
table.addCell(setCell1);
table.addCell(setCell2);
table.addCell(setCell3);
table.addCell(setCell4);
table.addCell(setCell5);
}
document.add(table);
}
public void createTableYq(PdfWriter writer,Document document) throws DocumentException, IOException {
PdfPTable table = new PdfPTable(new float[] {80, 50});
table.setTotalWidth(520);
table.setPaddingTop(500);
table.setLockedWidth(true);
table.setHorizontalAlignment(Element.ALIGN_CENTER);//居中
table.writeSelectedRows(0, -1,500,800,writer.getDirectContentUnder());
//每页都显示表头,输入几就是第几行的表头固定
table.setHeaderRows(2);
table.setHeaderRows(3);
//定义数据的字体
BaseFont baseFont = BaseFont.createFont("STSong-Light","UniGB-UCS2-H",BaseFont.NOT_EMBEDDED);
Font textFont = new Font(baseFont, 10, Font.NORMAL);
//这个是为了区分两个表格加的一个间隔，可以去掉
PdfPCell cell = new PdfPCell(new Paragraph(" ", textFont));
cell.setHorizontalAlignment( Element.ALIGN_LEFT);
cell.setVerticalAlignment(Element.ALIGN_BOTTOM);
cell.setBorder(Rectangle.NO_BORDER);
cell.setColspan(2);
table.addCell(cell);
//表头信息
PdfPCell heandCell = new PdfPCell();
heandCell.setRowspan(1);
heandCell.setColspan(2);
heandCell.setFixedHeight(60);
heandCell.setVerticalAlignment(Element.ALIGN_MIDDLE);
heandCell.setHorizontalAlignment(Element.ALIGN_CENTER);
heandCell.setPhrase(new Phrase(TITLE + "逾期表",textFont));
table.addCell(heandCell);
//表字段
String title[] = {"机构名称","逾期数"};
for (int i = 0; i < title.length; i++) {
PdfPCell heardCell = new PdfPCell();
heardCell.setVerticalAlignment(Element.ALIGN_MIDDLE);
heardCell.setHorizontalAlignment(Element.ALIGN_CENTER);
heardCell.setPhrase(new Phrase(title[i], textFont));
heardCell.setMinimumHeight(20);
table.addCell(heardCell);
}
//列表数据
List<YqTable> yqTables = new ArrayList<>();
for (int i = 1; i <= 1000; i++) {
YqTable yq = new YqTable();
yq.setJg("逾期机构" + i).setYqs(i);
yqTables.add(yq);
}
for (int i = 0; i < yqTables.size(); i++) {
PdfPCell setCell2 = createSetCell(yqTables.get(i).getJg(), textFont);
PdfPCell setCell3 = createSetCell(yqTables.get(i).getYqs().toString(), textFont);
table.addCell(setCell2);
table.addCell(setCell3);
}
document.add(table);
}
}
我说一下这个生成pdf需要注意的点，可能有的朋友很疑惑为什么要调用document.newPage();新开一页，这个是因为，如果你不新开一页的话会导致你动态生成的表格会跟模板内容重叠，注意是重叠而不是覆盖！！！
新开一页的话，就相当于我在第二页开始动态生成表格，这个时候可能有朋友就要问了，那如果我的模板没有占到一页怎么办，这样第一页岂不是会有空白，这个问题我也想到了，因为我的需求是生成好几种不同的pdf，下面我会把这种情况如何生成的代码放出来，我们先看一下第一种生成出来后的结果，我测的数据比较多，就粘几个结果好了。
2.3生成结果示例
3、生成pdf，模板和动态表格
实体类都是一样的没有变。
3.1生成pdf代码
package com.example.demo.pdf;
import cn.hutool.core.date.DateUtil;
import com.example.demo.domain.DuizhangDomain;
import com.example.demo.domain.YqTable;
import com.example.demo.pdf.phantom.PageEvent;
import com.itextpdf.text.*;
import com.itextpdf.text.pdf.*;
import freemarker.template.TemplateException;
import org.springframework.core.io.ClassPathResource;
import javax.servlet.http.HttpServletResponse;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.List;
/**
* 模板第一页不占满，生成表格
*/
public class CreatePdfEchrtsAndTableMain3 {
public void createPdfFile(HttpServletResponse response) throws IOException, DocumentException, TemplateException {
//设置请求返回类型
response.setHeader("Content-Disposition", "attachment; filename=测试.pdf");
OutputStream outputStream = response.getOutputStream();
//模板路径，放到项目里用这个ClassPathResource
ClassPathResource classPathResource = new ClassPathResource("templates/test3.pdf");
InputStream inputStream = classPathResource.getInputStream();
PdfReader reader = new PdfReader(inputStream);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
PdfStamper ps = new PdfStamper(reader, bos);
//设置字体
final BaseFont font = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);
ArrayList<BaseFont> fontList = new ArrayList<>();
fontList.add(font);
//提取表单
AcroFields s = ps.getAcroFields();
s.setSubstitutionFonts(fontList);
s.setFieldProperty("type", "textfont", font, null);
s.setFieldProperty("createTime", "textfont", font, null);
s.setFieldProperty("title", "textfont", font, null);
s.setField("type", "日报");
s.setField("createTime", DateUtil.now());
s.setField("title", "这是title，模板画的位置框");
ps.setFormFlattening(true);
ps.close();
//*******************填充编辑好后的pdf**************
reader = new PdfReader(bos.toByteArray());
Rectangle pageSize = reader.getPageSize(1);
Document document = new Document(pageSize);
PdfWriter writer = PdfWriter.getInstance(document, outputStream);
writer.setPageEvent(new PageEvent());
// 打开文档
document.open();
PdfContentByte cbUnder = writer.getDirectContentUnder();
PdfImportedPage pageTemplate = writer.getImportedPage(reader, 1);
cbUnder.addTemplate(pageTemplate, 0, 0);
//添加间隙,这里为进行了一个封装，因为这个模板第一页只有一些title啥的，
//重开一页太浪费，只需要确定表格要在什么位置生成，添加一个间隙就可以了
createBlankTable(writer, document, font, 180);
createTable(writer, document);
createBlankTable(writer, document, font, 20);
createTableYq(writer, document);
document.close();
outputStream.close();
}
//为一个表格添加内容
public PdfPCell createSetCell(String value, Font font) {
PdfPCell cell = new PdfPCell();
cell.setPhrase(new Phrase(value, font));
cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
cell.setHorizontalAlignment(Element.ALIGN_CENTER);
return cell;
}
//添加表格
public void createTable(PdfWriter writer, Document document) throws DocumentException, IOException {
PdfPTable table = new PdfPTable(new float[]{30, 80, 50, 50, 50});
table.setTotalWidth(520);
table.setPaddingTop(500);
table.setLockedWidth(true);
table.setHorizontalAlignment(Element.ALIGN_CENTER);//居中
table.writeSelectedRows(0, -1, 500, 800, writer.getDirectContentUnder());
//每页都显示表头,输入几就是第几行的表头固定
table.setHeaderRows(1);
table.setHeaderRows(2);
//定义数据的字体
BaseFont baseFont = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);
Font textFont = new Font(baseFont, 10, Font.NORMAL);
//表头信息
PdfPCell heandCell = new PdfPCell();
heandCell.setRowspan(1);
heandCell.setColspan(5);
heandCell.setFixedHeight(30);
heandCell.setVerticalAlignment(Element.ALIGN_MIDDLE);
heandCell.setHorizontalAlignment(Element.ALIGN_CENTER);
heandCell.setPhrase(new Phrase("对账情况表", textFont));
table.addCell(heandCell);
//表字段
String title[] = {"序号", "机构", "已对账", "未对账", "对账率%"};
for (int i = 0; i < title.length; i++) {
PdfPCell heardCell = new PdfPCell();
heardCell.setRowspan(1);
heardCell.setVerticalAlignment(Element.ALIGN_MIDDLE);
heardCell.setHorizontalAlignment(Element.ALIGN_CENTER);
heardCell.setPhrase(new Phrase(title[i], textFont));
heardCell.setMinimumHeight(20);
table.addCell(heardCell);
}
//列表数据
List<DuizhangDomain> duizhangDomains = new ArrayList<>();
for (int i = 1; i <= 1000; i++) {
DuizhangDomain duizhangDomain = new DuizhangDomain();
duizhangDomain.setJg("机构" + i).setYdz(i).setWdz(i).setDzl(new BigDecimal(i));
duizhangDomains.add(duizhangDomain);
}
for (int i = 0; i < duizhangDomains.size(); i++) {
PdfPCell setCell1 = createSetCell((i + 1) + "", textFont);
PdfPCell setCell2 = createSetCell(duizhangDomains.get(i).getJg(), textFont);
PdfPCell setCell3 = createSetCell(duizhangDomains.get(i).getYdz().toString(), textFont);
PdfPCell setCell4 = createSetCell(duizhangDomains.get(i).getWdz().toString(), textFont);
PdfPCell setCell5 = createSetCell(duizhangDomains.get(i).getDzl() + "%", textFont);
table.addCell(setCell1);
table.addCell(setCell2);
table.addCell(setCell3);
table.addCell(setCell4);
table.addCell(setCell5);
}
document.add(table);
}
public void createTableYq(PdfWriter writer, Document document) throws DocumentException, IOException {
PdfPTable table = new PdfPTable(new float[]{80, 50});
table.setTotalWidth(520);
table.setPaddingTop(500);
table.setLockedWidth(true);
table.setHorizontalAlignment(Element.ALIGN_CENTER);//居中
table.writeSelectedRows(0, -1, 500, 800, writer.getDirectContentUnder());
//每页都显示表头,输入几就是第几行的表头固定
table.setHeaderRows(2);
table.setHeaderRows(3);
//定义数据的字体
BaseFont baseFont = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);
Font textFont = new Font(baseFont, 10, Font.NORMAL);
//表头信息
PdfPCell heandCell = new PdfPCell();
heandCell.setRowspan(1);
heandCell.setColspan(2);
heandCell.setFixedHeight(30);
heandCell.setVerticalAlignment(Element.ALIGN_MIDDLE);
heandCell.setHorizontalAlignment(Element.ALIGN_CENTER);
heandCell.setPhrase(new Phrase("逾期表", textFont));
table.addCell(heandCell);
//表字段
String title[] = {"机构名称", "逾期数"};
for (int i = 0; i < title.length; i++) {
PdfPCell heardCell = new PdfPCell();
heardCell.setVerticalAlignment(Element.ALIGN_MIDDLE);
heardCell.setHorizontalAlignment(Element.ALIGN_CENTER);
heardCell.setPhrase(new Phrase(title[i], textFont));
heardCell.setMinimumHeight(20);
table.addCell(heardCell);
}
//列表数据
List<YqTable> yqTables = new ArrayList<>();
for (int i = 1; i <= 1000; i++) {
YqTable yq = new YqTable();
yq.setJg("逾期机构" + i).setYqs(i);
yqTables.add(yq);
}
for (int i = 0; i < yqTables.size(); i++) {
PdfPCell setCell2 = createSetCell(yqTables.get(i).getJg(), textFont);
PdfPCell setCell3 = createSetCell(yqTables.get(i).getYqs().toString(), textFont);
table.addCell(setCell2);
table.addCell(setCell3);
}
document.add(table);
}
/**
* 创建表格跟表格之间的空白间隔
*/
public void createBlankTable(PdfWriter writer, Document document, BaseFont font, int height) throws DocumentException {
PdfPTable table = new PdfPTable(new float[]{30});
table.setTotalWidth(520);
table.setPaddingTop(500);
table.setLockedWidth(true);
table.setHorizontalAlignment(Element.ALIGN_CENTER);//居中
table.writeSelectedRows(0, -1, 500, 800, writer.getDirectContentUnder());
Font textFont = new Font(font, 10, Font.NORMAL);
PdfPCell cell = new PdfPCell(new Paragraph(" ", textFont));
cell.setHorizontalAlignment(Element.ALIGN_LEFT);
cell.setVerticalAlignment(Element.ALIGN_BOTTOM);
cell.setBorder(Rectangle.NO_BORDER);
cell.setFixedHeight(height);
cell.setColspan(1);
table.addCell(cell);
document.add(table);
}
}
这是第二种生成pdf的方法，生成的结果不一样，因为模板第一页没有太多的东西，所以会空出来很多空白，这个时候生成动态表格如果重开一页比较浪费，而且客户看着也不好看，所以我封装了一下生成间隙的方法，直接用间隙把模板内容和表格隔开即可，看一下效果。
3.2页眉/页脚和水印类
package com.example.demo.pdf.phantom;
import com.itextpdf.text.*;
import com.itextpdf.text.pdf.*;
import java.io.IOException;
public class PageEvent extends PdfPageEventHelper {
/**
* 页眉
*/
//public String header = "itext测试页眉";
/**
* 文档字体大小，页脚页眉最好和文本大小一致
*/
public int presentFontSize = 10;
/**
* 文档页面大小，最好前面传入，否则默认为A4纸张
*/
public Rectangle pageSize = PageSize.A4;
// 模板
public PdfTemplate total;
// 基础字体对象
public BaseFont bf = null;
// 利用基础字体生成的字体对象，一般用于生成中文文字
public Font fontDetail = null;
/**
*
* Creates a new instance of PdfReportM1HeaderFooter 无参构造方法.
*
*/
public PageEvent() {
}
/**
*
* Creates a new instance of PdfReportM1HeaderFooter 构造方法.
*
* @param
*
* @param presentFontSize
* 数据体字体大小
* @param pageSize
* 页面文档大小，A4，A5，A6横转翻转等Rectangle对象
*/
// public PDFBuilder(String yeMei, int presentFontSize, Rectangle pageSize) {
// this.header = yeMei;
// this.presentFontSize = presentFontSize;
// this.pageSize = pageSize;
// }
public PageEvent( int presentFontSize, Rectangle pageSize) {
this.presentFontSize = presentFontSize;
this.pageSize = pageSize;
}
// public void setHeader(String header) {
// this.header = header;
// }
public void setPresentFontSize(int presentFontSize) {
this.presentFontSize = presentFontSize;
}
/**
*
* TODO 文档打开时创建模板
*
* @see com.itextpdf.text.pdf.PdfPageEventHelper#onOpenDocument(com.itextpdf.text.pdf.PdfWriter,
* com.itextpdf.text.Document)
*/
public void onOpenDocument(PdfWriter writer, Document document) {
total = writer.getDirectContent().createTemplate(50, 50);// 共 页 的矩形的长宽高
}
/**
*
* TODO 关闭每页的时候，写入页眉，写入'第几页共'这几个字。
*
* @see com.itextpdf.text.pdf.PdfPageEventHelper#onEndPage(com.itextpdf.text.pdf.PdfWriter,
* com.itextpdf.text.Document)
*/
public void onEndPage(PdfWriter writer, Document document) {
this.addPage(writer, document);
//加水印
this.addWatermark(writer);
}
//加分页
public void addPage(PdfWriter writer, Document document){
//设置分页页眉页脚字体
try {
if (bf == null) {
bf = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", false);
}
if (fontDetail == null) {
fontDetail = new Font(bf, presentFontSize, Font.NORMAL);// 数据体字体
}
} catch (DocumentException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
// 2.写入前半部分的 第 X页/共
int pageS = writer.getPageNumber();
String foot1 = "第 " + pageS + " 页 /共";
// String foot1 = pageS +"/";
Phrase footer = new Phrase(foot1, fontDetail);
// 3.计算前半部分的foot1的长度，后面好定位最后一部分的'Y页'这俩字的x轴坐标，字体长度也要计算进去 = len
float len = bf.getWidthPoint(foot1, presentFontSize);
// 4.拿到当前的PdfContentByte
PdfContentByte cb = writer.getDirectContent();
// 5.写入页脚1，x轴就是(右margin+左margin + right() -left()- len)/2.0F
// 再给偏移20F适合人类视觉感受，否则肉眼看上去就太偏左了
// ,y轴就是底边界-20,否则就贴边重叠到数据体里了就不是页脚了；注意Y轴是从下往上累加的，最上方的Top值是大于Bottom好几百开外的。
ColumnText
.showTextAligned(
cb,
Element.ALIGN_CENTER,
footer,
(document.rightMargin() + document.right()
+ document.leftMargin() - document.left() - len) / 2.0F ,
document.bottom() - 20, 0);
// 6.写入页脚2的模板（就是页脚的Y页这俩字）添加到文档中，计算模板的和Y轴,X=(右边界-左边界 - 前半部分的len值)/2.0F +
// len ， y 轴和之前的保持一致，底边界-20
cb.addTemplate(total, (document.rightMargin() + document.right()
+ document.leftMargin() - document.left()) / 2.0F ,
document.bottom() - 20); // 调节模版显示的位置
}
//加水印
public void addWatermark(PdfWriter writer) {
// 水印图片
// Image image;
// try {
// image = Image.getInstance("./web/images/001.jpg");
// PdfContentByte content = writer.getDirectContentUnder();
// content.beginText();
// // 开始写入水印
// for(int k=0;k<5;k++){
// for (int j = 0; j <4; j++) {
// image.setAbsolutePosition(150*j,170*k);
// content.addImage(image);
// }
// }
// content.endText();
// } catch (IOException | DocumentException e) {
// // TODO Auto-generated catch block
// e.printStackTrace();
// }
BaseFont font = null;
try {
font = BaseFont.createFont("STSong-Light","UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);
} catch (DocumentException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
PdfGState gs = new PdfGState();
//添加透明度
gs.setFillOpacity(0.4f);
PdfContentByte content = writer.getDirectContentUnder();
content.beginText();
//水印颜色
content.setColorFill(BaseColor.DARK_GRAY);
content.setGState(gs);
//水印字体样式和大小
content.setFontAndSize(font, 35);
//插入水印 循环每页插入的条数
for (int j = 0; j < 3; j++) {
content.showTextAligned(Element.ALIGN_CENTER, "锦鲤飞上天测试水印", 300, 200 * (j + 1), 30);
}
content.endText();
}
/**
*
* TODO 关闭文档时，替换模板，完成整个页眉页脚组件
*
* @see com.itextpdf.text.pdf.PdfPageEventHelper#onCloseDocument(com.itextpdf.text.pdf.PdfWriter,
* com.itextpdf.text.Document)
*/
public void onCloseDocument(PdfWriter writer, Document document) {
// 7.最后一步了，就是关闭文档的时候，将模板替换成实际的 Y 值,至此，page x of y 制作完毕，完美兼容各种文档size。
total.beginText();
total.setFontAndSize(bf, presentFontSize);// 生成的模版的字体、颜色
String foot2 = " " + (writer.getPageNumber()) + " 页"; //页脚内容拼接 如 第1页/共2页
// String foot2 = String.valueOf(writer.getPageNumber()); //页脚内容拼接 如 1/2
total.showText(foot2);// 模版显示的内容
total.endText();
total.closePath();
}
}