前言:
此刻兄弟们对“css字体转换是什么意思”大体比较珍视,各位老铁们都需要分析一些“css字体转换是什么意思”的相关资讯。那么小编也在网上汇集了一些有关“css字体转换是什么意思””的相关内容,希望你们能喜欢,同学们一起来学习一下吧!itext提供可HTML转PDF的工具包,但是在中文字体时也许会遇到意想不到的问题。特别宋体对应的粗体。
0x01:引入itext包
<dependency> <groupId>com.itextpdf</groupId> <artifactId>itext7-core</artifactId> <version>7.1.11</version> <type>pom</type> </dependency><dependency> <groupId>com.itextpdf</groupId> <artifactId>html2pdf</artifactId> <version>2.0.2</version></dependency>
0x02:要转换的HTML文件
<head></head><body> <p>iText</p> <div><b>大发发发萨法发发呆发呆东方大厦发</b></div> <div style="font-family:SimSun;weight:normal">Your developer here法大大是地方大发顺丰萨法发顺丰的here法大大是地方大发顺丰萨法发顺丰的here法大大是地方大发顺丰萨法发顺丰的here法大大是地方大发顺丰萨法发顺丰的here法大大是地方大发顺丰萨法发顺丰的here法大大是地方大发顺丰萨法发顺丰的here法大大是地方大发顺丰萨法发顺丰的journey with iText begins here法大大是地方大发顺丰萨法发顺丰的</div> <div style="font-family:SimSun;font-weight:bold">Your developer here法大大是地方大发顺丰萨法发顺丰的here法大大是地方大发顺丰萨法发顺丰的here法大大是地方大发顺丰萨法发顺丰的here法大大是地方大发顺丰萨法发顺丰的here法大大是地方大发顺丰萨法发顺丰的here法大大是地方大发顺丰萨法发顺丰的here法大大是地方大发顺丰萨法发顺丰的journey with iText begins here法大大是地方大发顺丰萨法发顺丰的</div> <p>iText</p> <div><b>大发发发萨法发发呆发呆东方大厦发</b></div> <div style="font-family:宋体;weight:normal">Your developer here法大大是地方大发顺丰萨法发顺丰的here法大大是地方大发顺丰萨法发顺丰的here法大大是地方大发顺丰萨法发顺丰的here法大大是地方大发顺丰萨法发顺丰的here法大大是地方大发顺丰萨法发顺丰的here法大大是地方大发顺丰萨法发顺丰的here法大大是地方大发顺丰萨法发顺丰的journey with iText begins here法大大是地方大发顺丰萨法发顺丰的</div> <div style="font-family:宋体;font-weight:bold">Your developer here法大大是地方大发顺丰萨法发顺丰的here法大大是地方大发顺丰萨法发顺丰的here法大大是地方大发顺丰萨法发顺丰的here法大大是地方大发顺丰萨法发顺丰的here法大大是地方大发顺丰萨法发顺丰的here法大大是地方大发顺丰萨法发顺丰的here法大大是地方大发顺丰萨法发顺丰的journey with iText begins here法大大是地方大发顺丰萨法发顺丰的</div> </body>
0x03:编写代码
import java.io.IOException;import com.itextpdf.io.font.FontConstants;import com.itextpdf.kernel.events.Event;import com.itextpdf.kernel.events.IEventHandler;import com.itextpdf.kernel.events.PdfDocumentEvent;import com.itextpdf.kernel.font.PdfFontFactory;import com.itextpdf.kernel.geom.Rectangle;import com.itextpdf.kernel.pdf.canvas.PdfCanvas;import com.itextpdf.layout.Document;public class TextFooterEventHandler implements IEventHandler { private Document doc; private int page; public TextFooterEventHandler(Document doc) { this.doc = doc; } public void handleEvent(Event event) { PdfDocumentEvent docEvent = (PdfDocumentEvent) event; PdfCanvas canvas = new PdfCanvas(docEvent.getPage()); Rectangle pageSize = docEvent.getPage().getPageSize(); page++; canvas.beginText(); try { canvas.setFontAndSize(PdfFontFactory.createFont(FontConstants.HELVETICA_OBLIQUE), 15); } catch (IOException e) { e.printStackTrace(); } canvas.moveText((pageSize.getRight() - doc.getRightMargin() + (pageSize.getLeft() + doc.getLeftMargin())) / 2, pageSize.getBottom() + doc.getBottomMargin()) .showText("" + page).endText().release(); }}itext默认字体
public static void defaultFont() throws Exception{ try { String pdfPath = "C:\\Users\\2230\\Desktop\\a\\defaultFont.pdf"; PdfWriter pdfWriter = new PdfWriter(new File(pdfPath)); PdfDocument pdfDocument = new PdfDocument(pdfWriter) ; Document doc = new Document(pdfDocument); pdfDocument.setDefaultPageSize(PageSize.A4); pdfDocument.addEventHandler(PdfDocumentEvent.END_PAGE, new TextFooterEventHandler(doc)); ConverterProperties pro = new ConverterProperties(); FontProvider fontProvider = new DefaultFontProvider(); fontProvider.addSystemFonts(); pro.setFontProvider(fontProvider); HtmlConverter.convertToPdf(new FileInputStream("C:\\Users\\2230\\Desktop\\a\\d.html"), pdfDocument, pro); } catch (Exception e) { e.printStackTrace(); } }
默认转换结果
加载宋体
这里只加载了宋体,没有加载宋粗体
public static void songTiDefaultFont() throws Exception{ try{ String pdfPath = "C:\\Users\\2230\\Desktop\\a\\songTiDefaultFont.pdf"; PdfWriter pdfWriter = new PdfWriter(new File(pdfPath)); PdfDocument pdfDocument = new PdfDocument(pdfWriter) ; Document doc = new Document(pdfDocument); pdfDocument.setDefaultPageSize(PageSize.A4); pdfDocument.addEventHandler(PdfDocumentEvent.END_PAGE, new TextFooterEventHandler(doc)); ConverterProperties pro = new ConverterProperties(); FontProvider fontProvider = new DefaultFontProvider(); //宋体 FontProgram fontProgram1 = FontProgramFactory.createFont("C:\\Users\\2230\\Desktop\\a\\simsun.ttc,1"); fontProvider.addFont(fontProgram1); pro.setFontProvider(fontProvider); HtmlConverter.convertToPdf(new FileInputStream("C:\\Users\\2230\\Desktop\\a\\d.html"), pdfDocument, pro); } catch (Exception e) { e.printStackTrace(); } }
发现转换出来的PDF,丢失了字体样式
分析原因发现C:\Windows\Fonts默认没有宋体粗字体,默认只有宋体常规
网上下载宋体粗字体宋体-粗体.ttf,下载的都是ttf格式;代码加载宋体粗字体
public static void songTiDefaultFont() throws Exception{ try{ String pdfPath = "C:\\Users\\2230\\Desktop\\a\\songTiDefaultFont.pdf"; PdfWriter pdfWriter = new PdfWriter(new File(pdfPath)); PdfDocument pdfDocument = new PdfDocument(pdfWriter) ; Document doc = new Document(pdfDocument); pdfDocument.setDefaultPageSize(PageSize.A4); pdfDocument.addEventHandler(PdfDocumentEvent.END_PAGE, new TextFooterEventHandler(doc)); ConverterProperties pro = new ConverterProperties(); FontProvider fontProvider = new DefaultFontProvider(); //宋体 FontProgram fontProgram1 = FontProgramFactory.createFont("C:\\Users\\2230\\Desktop\\a\\simsun.ttc,1"); fontProvider.addFont(fontProgram1); //宋体粗体 FontProgram fontProgram2 = FontProgramFactory.createFont("C:\\Users\\2230\\Desktop\\a\\宋体-粗体.ttf"); fontProvider.addFont(fontProgram2); pro.setFontProvider(fontProvider); HtmlConverter.convertToPdf(new FileInputStream("C:\\Users\\2230\\Desktop\\a\\d.html"), pdfDocument, pro); } catch (Exception e) { e.printStackTrace(); } }
多加了如下代码:
执行直接报错,字体无法加载
把ttf转换成otf格式字体
在线转换工具:
public static void songConvertTiFont() throws Exception{ try{ String pdfPath = "C:\\Users\\2230\\Desktop\\a\\songTiFont.pdf"; PdfWriter pdfWriter = new PdfWriter(new File(pdfPath)); PdfDocument pdfDocument = new PdfDocument(pdfWriter) ; Document doc = new Document(pdfDocument); pdfDocument.setDefaultPageSize(PageSize.A4); pdfDocument.addEventHandler(PdfDocumentEvent.END_PAGE, new TextFooterEventHandler(doc)); ConverterProperties pro = new ConverterProperties(); FontProvider fontProvider = new DefaultFontProvider(); fontProvider.addSystemFonts(); //宋体 FontProgram fontProgram1 = FontProgramFactory.createFont("C:\\Users\\2230\\Desktop\\a\\simsun.ttc,0"); fontProvider.addFont(fontProgram1); //宋体粗体 FontProgram fontProgram2 = FontProgramFactory.createFont("C:\\Users\\2230\\Desktop\\a\\宋体-粗体.otf"); fontProvider.addFont(fontProgram2); pro.setFontProvider(fontProvider); HtmlConverter.convertToPdf(new FileInputStream("C:\\Users\\2230\\Desktop\\a\\d.html"), pdfDocument, pro); } catch (Exception e) { e.printStackTrace(); } }
转换结果
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