使用iText导出PDF文件（支持中文，解析html）

╰半橙微兮° 2023-07-15 13:17 4阅读 0赞

1，加入依赖：

<dependency>
 <groupId>com.itextpdf</groupId>
 <artifactId>itextpdf</artifactId>
 <version>5.5.10</version>
 </dependency>
 <dependency>
 <groupId>com.itextpdf</groupId>
 <artifactId>itext-asian</artifactId>
 <version>5.2.0</version>
 </dependency>
 <dependency>
 <groupId>com.itextpdf.tool</groupId>
 <artifactId>xmlworker</artifactId>
 <version>5.5.11</version>
 </dependency>
 <!--处理html相关->
 <dependency>
 <groupId>org.jsoup</groupId>
 <artifactId>jsoup</artifactId>
 <version>1.11.2</version>
 </dependency>

从C:\\Windows\\Fonts文件夹拷贝字体文件simfang.ttf到项目classpath下的font文件夹（其它目录也可以）

![70][]

二：代码示例

package itextpdf;
 
 import com.itextpdf.text.*;
 import com.itextpdf.text.pdf.*;
 import com.itextpdf.tool.xml.XMLWorkerFontProvider;
 import com.itextpdf.tool.xml.XMLWorkerHelper;
 import org.jsoup.Jsoup;
 import org.junit.Test;
 
 import java.io.*;
 import java.nio.charset.Charset;
 
 /**
 * @description 导出pdf文件
 * @date 2018/3/16 16:48$
 */
 public class ExportPdfTest {
 
 @Test
 public void export() throws Exception {
 //创建document Document document = new Document(PageSize.A4);
 //设置要导出的文件名
 OutputStream outputStream = new FileOutputStream(new File("C:\\Users\\Administrator\\Desktop\\test.pdf"));
 PdfWriter writer = PdfWriter.getInstance(document, outputStream);
 document.open();
 //获取字体文件目录
 String fontDir = this.getClass().getClassLoader().getResource("font").getFile();
 //注册字体文件
 XMLWorkerFontProvider xmlWorkerFontProvider = new XMLWorkerFontProvider(fontDir);
 //设置中文字体，本文举例使用的是仿宋
 BaseFont baseFont = BaseFont.createFont("font/SIMFANG.ttf", BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
 Font font12 = new Font(baseFont, 12);
 
 //页眉，是可以双层或更多,取决于放置的坐标
 PdfContentByte cb = writer.getDirectContent();
 //页眉左上
 Phrase leftp1 = new Phrase("页眉左上", font12);
 ColumnText.showTextAligned(cb, Element.ALIGN_LEFT, leftp1, document.left(), document.top() + 13, 0);
 //页眉左下
 Phrase leftp2 = new Phrase("页眉左下:", font12);
 ColumnText.showTextAligned(cb, Element.ALIGN_LEFT, leftp2, document.left(), document.top(), 0);
 //页眉右上
 Phrase rightp1 = new Phrase("页眉右上:", font12);
 float rightp1WidthPoint = baseFont.getWidthPoint(rightp1.getContent(), 12);
 ColumnText.showTextAligned(cb, Element.ALIGN_LEFT, rightp1, document.right() - rightp1WidthPoint, document.top() + 13, 0);
 //页眉右下
 Phrase rightp2 = new Phrase("页眉右下:", font12);
 float rightp2WidthPoint = baseFont.getWidthPoint(rightp2.getContent(), 12);
 ColumnText.showTextAligned(cb, Element.ALIGN_LEFT, rightp2, document.right() - rightp2WidthPoint, document.top(), 0);
 
 //下划线
 PdfContentByte canvas = writer.getDirectContent();
 CMYKColor magentaColor = new CMYKColor(1.f, 1.f, 1.f, 1.f);
 canvas.setColorStroke(magentaColor);
 canvas.moveTo(document.left(), document.top() - 4);
 canvas.lineTo(document.right(), document.top() - 4);
 canvas.closePathStroke();
 
 //标题
 Font h1 = new Font(baseFont, 20, Font.BOLD);//创建全文标题字体，参数分别是字体类别,字号,效果
 Paragraph paragraphTitle = new Paragraph("标题测试", h1);//设置文本内容和要使用的字体
 paragraphTitle.setAlignment(Element.ALIGN_CENTER);//设置居中
 document.add(paragraphTitle);
 
 //正文标题1
 Font h3 = new Font(baseFont, 14, Font.BOLD);//创建标题字体
 Paragraph paragraphH1 = new Paragraph("正文标题1", h3);
 document.add(paragraphH1);
 //正文1
 Paragraph paragraphText1 = new Paragraph("你能做到最好，你能做到最好，你能做到最好，你能做到最好，你能做到最好，你能做到最好，你能做到最好。", font12);
 document.add(paragraphText1);
 
 //正文2，html标签内容
 String content = "<div class=\"overflow-hidden\"><div class=\"editContent\"> eah, you could be the greatest 你会成为最伟大的人 You can be the best 你能做到最好 You can be the King Kong banging on your chest 你能像金刚一样自信满满的敲打胸脯 You could beat the world 你可以征服全世界 You could beat the war 能够赢得一切战争 You could talk to God, go banging on his door 甚至能够与神对话 去敲打他的门 You can throw your hands up 你能自信的举起双手 You can be the clock 你可以与时间抗争 You can move a mountain 你有移山之力 You can break rocks 你能击碎岩石 You can be a master 你可以成为命运主宰 Don't wait for luck 无需等待运气垂青 Dedicate yourself and you can find yourself 放手一搏后你会恍然发现 Standing in the hall of fame 你已身处名人堂之中</div></div>";
 //html转换成普通文字,方法如下:
 org.jsoup.nodes.Document contentDoc = Jsoup.parseBodyFragment(content);
 org.jsoup.nodes.Document.OutputSettings outputSettings = new org.jsoup.nodes.Document.OutputSettings();
 outputSettings.syntax(org.jsoup.nodes.Document.OutputSettings.Syntax.xml);
 contentDoc.outputSettings(outputSettings);
 String parsedHtml = contentDoc.outerHtml();
 //这儿的font-family不支持汉字，{font-family:仿宋} 是不可以的。
 InputStream cssIs = new ByteArrayInputStream("* {font-family: fangsong;}".getBytes("UTF-8"));
 //第四个参数是html中的css文件的输入流
 //第五个参数是字体提供者，使用系统默认支持的字体时，可以不传。
 XMLWorkerHelper.getInstance().parseXHtml(writer, document, new ByteArrayInputStream(parsedHtml.getBytes()), cssIs, xmlWorkerFontProvider);
 
 //页脚
 PdfContentByte cj = writer.getDirectContent();
 Phrase leftp3 = new Phrase("页脚左侧", font12);
 ColumnText.showTextAligned(cj, Element.ALIGN_LEFT, leftp3, document.left(), document.bottom(), 0);
 Phrase rightp3 = new Phrase("页脚右侧", font12);
 final float rightp3WidthPoint = baseFont.getWidthPoint(rightp3.getContent(), 12);
 ColumnText.showTextAligned(cj, Element.ALIGN_LEFT, rightp3, document.right() - rightp3WidthPoint, document.bottom(), 0);
 
 //关闭
 document.close();
 }}

三：导出文件展示

![70 1][]

[70]: /images/20230528/4972ed5cef594f8cba5c8d229132ca81.png
[70 1]: /images/20230528/19d9d8854c5f49f8a7c547d2e9b56509.png