原生成pdf代码（不带页码）
public static void html2pdf(String htmlFile, String pdfFile) {
// step 1
String url;
OutputStream os = null;
try {
File file = new File(pdfFile);
File fileParent = file.getParentFile();
if (!fileParent.exists()) {
fileParent.mkdirs();
}
url = new File(htmlFile).toURI().toURL().toString();
os = new FileOutputStream(pdfFile);
ITextRenderer renderer = new ITextRenderer();
renderer.setDocument(url);
BaseFont font = BaseFont.createFont("/static/fonts/msyh.ttc,1", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
// 解决中文不显示问题
ITextFontResolver fontResolver = renderer.getFontResolver();
fontResolver.addFont("/static/fonts/msyh.ttc", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
renderer.layout();
renderer.createPDF(os);
} catch (Exception e) {
System.out.println(pdfFile);
e.printStackTrace();
} finally {
if(os != null) {
try {
os.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
public static void main(String[] args) {
//html文件路径
String htmlFilePath = "C:\\Users\\admin\\Desktop\\应急方案-叶不凡_html_01\\应急方案-叶不凡.html";
try {
// html转pdf
html2pdf(htmlFilePath,"C:\\Users\\admin\\Desktop\\应急方案-叶不凡_html_01\\ksjg.pdf");
System.out.println("转换成功！");
} catch (Exception e) {
e.printStackTrace();
}
}后来让添加页码，找了好多的博客整理出的代码原有的ITextRenderer不带
setPdfPageEvent方法所以重写了一个ITextRenderer，代码如下重新维护了PageEventpackage com.zr.utils.pdf;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.pdf.PdfPageEvent;
import com.itextpdf.text.pdf.PdfWriter;
import java.awt.Dimension;
import java.awt.Rectangle;
import java.awt.Shape;
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.io.StringReader;
import java.io.StringWriter;
import java.io.UnsupportedEncodingException;
import java.io.Writer;
import java.util.List;
import java.util.regex.Pattern;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.xhtmlrenderer.context.StyleReference;
import org.xhtmlrenderer.extend.NamespaceHandler;
import org.xhtmlrenderer.extend.UserInterface;
import org.xhtmlrenderer.layout.BoxBuilder;
import org.xhtmlrenderer.layout.Layer;
import org.xhtmlrenderer.layout.LayoutContext;
import org.xhtmlrenderer.layout.SharedContext;
import org.xhtmlrenderer.pdf.*;
import org.xhtmlrenderer.render.BlockBox;
import org.xhtmlrenderer.render.PageBox;
import org.xhtmlrenderer.render.RenderingContext;
import org.xhtmlrenderer.render.ViewportBox;
import org.xhtmlrenderer.resource.XMLResource;
import org.xhtmlrenderer.simple.extend.XhtmlNamespaceHandler;
import org.xhtmlrenderer.util.Configuration;
import org.xml.sax.InputSource;
/**
* @author lqx
* @create 2019-05-23 8:26
*/
public class ITextRenderer3 {
private static final float DEFAULT_DOTS_PER_POINT = 26.666666F;
private static final int DEFAULT_DOTS_PER_PIXEL = 20;
private final SharedContext _sharedContext;
private final ITextOutputDevice _outputDevice;
private Document _doc;
private BlockBox _root;
private final float _dotsPerPoint;
private com.itextpdf.text.Document _pdfDoc;
private PdfWriter _writer;
private PDFEncryption _pdfEncryption;
private Character _pdfVersion;
private final char[] validPdfVersions;
private PDFCreationListener _listener;
private PdfPageEvent pdfPageEvent;
private ITextRenderer iTextRenderer = null;
public ITextRenderer3(ITextRenderer iTextRenderer) {
this(DEFAULT_DOTS_PER_POINT, DEFAULT_DOTS_PER_PIXEL);
this.iTextRenderer = iTextRenderer;
}
public ITextRenderer3() {
this(26.666666F, 20);
}
public ITextRenderer3(float dotsPerPoint, int dotsPerPixel) {
this.validPdfVersions = new char[]{'2', '3', '4', '5', '6', '7'};
this._dotsPerPoint = dotsPerPoint;
this._outputDevice = new ITextOutputDevice(this._dotsPerPoint);
ITextUserAgent userAgent = new ITextUserAgent(this._outputDevice);
this._sharedContext = new SharedContext();
this._sharedContext.setUserAgentCallback(userAgent);
this._sharedContext.setCss(new StyleReference(userAgent));
userAgent.setSharedContext(this._sharedContext);
this._outputDevice.setSharedContext(this._sharedContext);
ITextFontResolver fontResolver = new ITextFontResolver(this._sharedContext);
this._sharedContext.setFontResolver(fontResolver);
ITextReplacedElementFactory replacedElementFactory = new ITextReplacedElementFactory(this._outputDevice);
this._sharedContext.setReplacedElementFactory(replacedElementFactory);
this._sharedContext.setTextRenderer(new ITextTextRenderer());
this._sharedContext.setDPI(72.0F * this._dotsPerPoint);
this._sharedContext.setDotsPerPixel(dotsPerPixel);
this._sharedContext.setPrint(true);
this._sharedContext.setInteractive(false);
}
public PdfPageEvent getPdfPageEvent() {
return pdfPageEvent;
}
public void setPdfPageEvent(PdfPageEvent pdfPageEvent) {
this.pdfPageEvent = pdfPageEvent;
}
public Document getDocument() {
return this._doc;
}
public ITextFontResolver getFontResolver() {
return (ITextFontResolver)this._sharedContext.getFontResolver();
}
private Document loadDocument(String uri) {
return this._sharedContext.getUac().getXMLResource(uri).getDocument();
}
public void setDocument(String uri) {
this.setDocument(this.loadDocument(uri), uri);
}
public void setDocument(Document doc, String url) {
this.setDocument(doc, url, new XhtmlNamespaceHandler());
}
public void setDocument(File file) throws IOException {
File parent = file.getAbsoluteFile().getParentFile();
this.setDocument(this.loadDocument(file.toURI().toURL().toExternalForm()), parent == null ? "" : parent.toURI().toURL().toExternalForm());
}
public void setDocumentFromString(String content) {
this.setDocumentFromString(content, (String)null);
}
public void setDocumentFromString(String content, String baseUrl) {
InputSource is = new InputSource(new BufferedReader(new StringReader(content)));
Document dom = XMLResource.load(is).getDocument();
this.setDocument(dom, baseUrl);
}
public void setDocument(Document doc, String url, NamespaceHandler nsh) {
this._doc = doc;
this.getFontResolver().flushFontFaceFonts();
this._sharedContext.reset();
if (Configuration.isTrue("xr.cache.stylesheets", true)) {
this._sharedContext.getCss().flushStyleSheets();
} else {
this._sharedContext.getCss().flushAllStyleSheets();
}
this._sharedContext.setBaseURL(url);
this._sharedContext.setNamespaceHandler(nsh);
this._sharedContext.getCss().setDocumentContext(this._sharedContext, this._sharedContext.getNamespaceHandler(), doc, new ITextRenderer3.NullUserInterface());
this.getFontResolver().importFontFaces(this._sharedContext.getCss().getFontFaceRules());
}
public PDFEncryption getPDFEncryption() {
return this._pdfEncryption;
}
public void setPDFEncryption(PDFEncryption pdfEncryption) {
this._pdfEncryption = pdfEncryption;
}
public void setPDFVersion(char _v) {
for(int i = 0; i < this.validPdfVersions.length; ++i) {
if (_v == this.validPdfVersions[i]) {
this._pdfVersion = new Character(_v);
return;
}
}
throw new IllegalArgumentException("Invalid PDF version character; use valid constants from PdfWriter (e.g. PdfWriter.VERSION_1_2)");
}
public char getPDFVersion() {
return this._pdfVersion == null ? '0' : this._pdfVersion;
}
public void layout() {
LayoutContext c = this.newLayoutContext();
BlockBox root = BoxBuilder.createRootBox(c, this._doc);
root.setContainingBlock(new ViewportBox(this.getInitialExtents(c)));
root.layout(c);
Dimension dim = root.getLayer().getPaintingDimension(c);
root.getLayer().trimEmptyPages(c, dim.height);
root.getLayer().layoutPages(c);
this._root = root;
}
private Rectangle getInitialExtents(LayoutContext c) {
PageBox first = Layer.createPageBox(c, "first");
return new Rectangle(0, 0, first.getContentWidth(c), first.getContentHeight(c));
}
private RenderingContext newRenderingContext() {
RenderingContext result = this._sharedContext.newRenderingContextInstance();
result.setFontContext(new ITextFontContext());
result.setOutputDevice(this._outputDevice);
this._sharedContext.getTextRenderer().setup(result.getFontContext());
result.setRootLayer(this._root.getLayer());
return result;
}
private LayoutContext newLayoutContext() {
LayoutContext result = this._sharedContext.newLayoutContextInstance();
result.setFontContext(new ITextFontContext());
this._sharedContext.getTextRenderer().setup(result.getFontContext());
return result;
}
public void createPDF(OutputStream os) throws DocumentException, IOException {
this.createPDF(os, true, 0);
}
public void writeNextDocument() throws DocumentException, IOException {
this.writeNextDocument(0);
}
public void writeNextDocument(int initialPageNo) throws DocumentException, IOException {
java.util.List pages = this._root.getLayer().getPages();
RenderingContext c = this.newRenderingContext();
c.setInitialPageNo(initialPageNo);
PageBox firstPage = (PageBox)pages.get(0);
com.itextpdf.text.Rectangle firstPageSize = new com.itextpdf.text.Rectangle(0.0F, 0.0F, (float)firstPage.getWidth(c) / this._dotsPerPoint, (float)firstPage.getHeight(c) / this._dotsPerPoint);
this._outputDevice.setStartPageNo(this._writer.getPageNumber());
this._pdfDoc.setPageSize(firstPageSize);
this._pdfDoc.newPage();
this.writePDF(pages, c, firstPageSize, this._pdfDoc, this._writer);
}
public void finishPDF() {
if (this._pdfDoc != null) {
this.fireOnClose();
this._pdfDoc.close();
}
}
public void createPDF(OutputStream os, boolean finish) throws DocumentException, IOException {
this.createPDF(os, finish, 0);
}
public void createPDF(OutputStream os, boolean finish, int initialPageNo) throws DocumentException, IOException {
java.util.List pages = this._root.getLayer().getPages();
RenderingContext c = this.newRenderingContext();
c.setInitialPageNo(initialPageNo);
PageBox firstPage = (PageBox)pages.get(0);
com.itextpdf.text.Rectangle firstPageSize = new com.itextpdf.text.Rectangle(0.0F, 0.0F, (float)firstPage.getWidth(c) / this._dotsPerPoint, (float)firstPage.getHeight(c) / this._dotsPerPoint);
com.itextpdf.text.Document doc = new com.itextpdf.text.Document(firstPageSize, 0.0F, 0.0F, 0.0F, 0.0F);
PdfWriter writer = PdfWriter.getInstance(doc, os);
if (this._pdfVersion != null) {
writer.setPdfVersion(this._pdfVersion);
}
if (this._pdfEncryption != null) {
writer.setEncryption(this._pdfEncryption.getUserPassword(), this._pdfEncryption.getOwnerPassword(), this._pdfEncryption.getAllowedPrivileges(), this._pdfEncryption.getEncryptionType());
}
this._pdfDoc = doc;
this._writer = writer;
this.firePreOpen();
if (this.pdfPageEvent != null) {
writer.setPageEvent(pdfPageEvent);
}
doc.open();
this.writePDF(pages, c, firstPageSize, doc, writer);
if (finish) {
this.fireOnClose();
doc.close();
}
}
private void firePreOpen() {
if (this._listener != null) {
this._listener.preOpen(iTextRenderer);
}
}
private void firePreWrite(int pageCount) {
if (this._listener != null) {
this._listener.preWrite(iTextRenderer, pageCount);
}
}
private void fireOnClose() {
if (this._listener != null) {
this._listener.onClose(iTextRenderer);
}
}
private void writePDF(java.util.List pages, RenderingContext c, com.itextpdf.text.Rectangle firstPageSize, com.itextpdf.text.Document doc, PdfWriter writer) throws DocumentException, IOException {
this._outputDevice.setRoot(this._root);
this._outputDevice.start(this._doc);
this._outputDevice.setWriter(writer);
this._outputDevice.initializePage(writer.getDirectContent(), firstPageSize.getHeight());
this._root.getLayer().assignPagePaintingPositions(c, (short)2);
int pageCount = this._root.getLayer().getPages().size();
c.setPageCount(pageCount);
this.firePreWrite(pageCount);
this.setDidValues(doc);
for(int i = 0; i < pageCount; ++i) {
PageBox currentPage = (PageBox)pages.get(i);
c.setPage(i, currentPage);
this.paintPage(c, writer, currentPage);
this._outputDevice.finishPage();
if (i != pageCount - 1) {
PageBox nextPage = (PageBox)pages.get(i + 1);
com.itextpdf.text.Rectangle nextPageSize = new com.itextpdf.text.Rectangle(0.0F, 0.0F, (float)nextPage.getWidth(c) / this._dotsPerPoint, (float)nextPage.getHeight(c) / this._dotsPerPoint);
doc.setPageSize(nextPageSize);
doc.newPage();
this._outputDevice.initializePage(writer.getDirectContent(), nextPageSize.getHeight());
}
}
this._outputDevice.finish(c, this._root);
}
private void setDidValues(com.itextpdf.text.Document doc) {
String v = this._outputDevice.getMetadataByName("title");
if (v != null) {
doc.addTitle(v);
}
v = this._outputDevice.getMetadataByName("author");
if (v != null) {
doc.addAuthor(v);
}
v = this._outputDevice.getMetadataByName("subject");
if (v != null) {
doc.addSubject(v);
}
v = this._outputDevice.getMetadataByName("keywords");
if (v != null) {
doc.addKeywords(v);
}
}
private void paintPage(RenderingContext c, PdfWriter writer, PageBox page) throws IOException {
this.provideMetadataToPage(writer, page);
page.paintBackground(c, 0, (short)2);
page.paintMarginAreas(c, 0, (short)2);
page.paintBorder(c, 0, (short)2);
Shape working = this._outputDevice.getClip();
Rectangle content = page.getPrintClippingBounds(c);
this._outputDevice.clip(content);
int top = -page.getPaintingTop() + page.getMarginBorderPadding(c, 3);
int left = page.getMarginBorderPadding(c, 1);
this._outputDevice.translate((double)left, (double)top);
this._root.getLayer().paint(c);
this._outputDevice.translate((double)(-left), (double)(-top));
this._outputDevice.setClip(working);
}
private void provideMetadataToPage(PdfWriter writer, PageBox page) throws IOException {
byte[] metadata = null;
if (page.getMetadata() != null) {
try {
String metadataBody = this.stringfyMetadata(page.getMetadata());
if (metadataBody != null) {
metadata = this.createXPacket(this.stringfyMetadata(page.getMetadata())).getBytes("UTF-8");
}
} catch (UnsupportedEncodingException var5) {
throw new RuntimeException(var5);
}
}
if (metadata != null) {
writer.setPageXmpMetadata(metadata);
}
}
private String stringfyMetadata(Element element) {
Element target = getFirstChildElement(element);
if (target == null) {
return null;
} else {
try {
TransformerFactory factory = TransformerFactory.newInstance();
Transformer transformer = factory.newTransformer();
transformer.setOutputProperty("omit-xml-declaration", "yes");
StringWriter output = new StringWriter();
transformer.transform(new DOMSource(target), new StreamResult(output));
return output.toString();
} catch (TransformerConfigurationException var6) {
throw new RuntimeException(var6);
} catch (TransformerException var7) {
throw new RuntimeException(var7);
}
}
}
private static Element getFirstChildElement(Element element) {
for(Node n = element.getFirstChild(); n != null; n = n.getNextSibling()) {
if (n.getNodeType() == 1) {
return (Element)n;
}
}
return null;
}
private String createXPacket(String metadata) {
StringBuffer result = new StringBuffer(metadata.length() + 50);
result.append("<?xpacket begin='\ufeff' id='W5M0MpCehiHzreSzNTczkc9d'?>\n");
result.append(metadata);
result.append("\n<?xpacket end='r'?>");
return result.toString();
}
public ITextOutputDevice getOutputDevice() {
return this._outputDevice;
}
public SharedContext getSharedContext() {
return this._sharedContext;
}
public void exportText(Writer writer) throws IOException {
RenderingContext c = this.newRenderingContext();
c.setPageCount(this._root.getLayer().getPages().size());
this._root.exportText(c, writer);
}
public BlockBox getRootBox() {
return this._root;
}
public float getDotsPerPoint() {
return this._dotsPerPoint;
}
public List findPagePositionsByID(Pattern pattern) {
return this._outputDevice.findPagePositionsByID(this.newLayoutContext(), pattern);
}
public PDFCreationListener getListener() {
return this._listener;
}
public void setListener(PDFCreationListener listener) {
this._listener = listener;
}
public PdfWriter getWriter() {
return this._writer;
}
private static final class NullUserInterface implements UserInterface {
private NullUserInterface() {
}
public boolean isHover(Element e) {
return false;
}
public boolean isActive(Element e) {
return false;
}
public boolean isFocus(Element e) {
return false;
}
}
}
PageEvent类如下
package com.zr.utils.pdf;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.ExceptionConverter;
import com.itextpdf.text.pdf.*;
import java.io.File;
import java.io.IOException;
/**
* @author lqx
* @create 2019-05-23 10:23
*/
public class PageXofYTest2 extends PdfPageEventHelper {
public PdfTemplate total;
public BaseFont bfChinese;
public PageXofYTest2(BaseFont bfChinese) {
this.bfChinese = bfChinese;
}
/**
* 重写PdfPageEventHelper中的onOpenDocument方法
*/
@Override
public void onOpenDocument(PdfWriter writer, Document document) {
// 得到文档的内容并为该内容新建一个模板
total = writer.getDirectContent().createTemplate(500, 500);
}
/**
* 重写PdfPageEventHelper中的onEndPage方法
*/
@Override
public void onEndPage(PdfWriter writer, Document document) {
// 新建获得用户页面文本和图片内容位置的对象
PdfContentByte pdfContentByte = writer.getDirectContent();
// 保存图形状态
pdfContentByte.saveState();
String text = "第"+writer.getPageNumber() + "页/";
// 获取点字符串的宽度
float textSize = bfChinese.getWidthPoint(text, 9);
pdfContentByte.beginText();
// 设置随后的文本内容写作的字体和字号
pdfContentByte.setFontAndSize(bfChinese, 9);
// 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 = bfChinese.getWidthPoint(text, 9);
// 定位'X/'
float x = (document.right() + document.left()) / 2-len;
//float y = document.bottom() - 20;
//System.out.println(document.bottom() +20);
float y =20f;
pdfContentByte.setTextMatrix(x, y);
pdfContentByte.showText(text);
pdfContentByte.endText();
// 将模板加入到内容（content）中- // 定位'Y'
pdfContentByte.addTemplate(total, x + textSize, y);//最后第几页的页怎么也和前面的//第几对不齐，然后把y改为y-1,把下面onCloseDocument中的total.setTextMatrix(0, 0);改为//total.setTextMatrix(0, 1);
pdfContentByte.restoreState();
}
/**
* 重写PdfPageEventHelper中的onCloseDocument方法
*/
@Override
public void onCloseDocument(PdfWriter writer, Document document) {
total.beginText();
total.setFontAndSize(bfChinese, 9);
total.setTextMatrix(0, 0);
// 设置总页数的值到模板上，并应用到每个界面
total.showText("共"+String.valueOf(writer.getPageNumber() - 1)+"页");
total.endText();
}
}
带总页码的调用方法
public static void html2pdf(String htmlFile, String pdfFile) {
// step 1
String url;
OutputStream os = null;
try {
File file = new File(pdfFile);
File fileParent = file.getParentFile();
if (!fileParent.exists()) {
fileParent.mkdirs();
}
url = new File(htmlFile).toURI().toURL().toString();
os = new FileOutputStream(pdfFile);
ITextRenderer3 renderer = new ITextRenderer3(new ITextRenderer());
renderer.setDocument(url);
BaseFont font = BaseFont.createFont("/static/fonts/msyh.ttc,1", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
renderer.setPdfPageEvent(new PageXofYTest2(font));
// 解决中文不显示问题
ITextFontResolver fontResolver = renderer.getFontResolver();
fontResolver.addFont("/static/fonts/msyh.ttc", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
renderer.layout();
renderer.createPDF(os);
} catch (Exception e) {
System.out.println(pdfFile);
e.printStackTrace();
} finally {
if(os != null) {
try {
os.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
public static void main(String[] args) {
//html文件路径
String htmlFilePath = "C:\\Users\\admin\\Desktop\\应急方案-叶不凡_html_01\\应急方案-叶不凡.html";
try {
// html转pdf
html2pdf(htmlFilePath,"C:\\Users\\admin\\Desktop\\应急方案-叶不凡_html_01\\ksjg.pdf");
System.out.println("转换成功！");
} catch (Exception e) {
e.printStackTrace();
}
}主要参考博客地址：https://www.cnblogs.com/king-xg/p/7240467.html