Java Itext 实现HTML 转换PDF

曾经终败给现在 2023-10-18 16:42 21阅读 0赞

项目编码：

1、依赖文件

2、核心编码

<dependency>
    			<groupId>com.itextpdf</groupId>
    			<artifactId>itextpdf</artifactId>
    			<version>5.5.13</version>
    		</dependency>
    		<dependency>
    			<groupId>com.itextpdf.tool</groupId>
    			<artifactId>xmlworker</artifactId>
    			<version>5.5.13</version>
    		</dependency>
    		 <dependency>
                <groupId>com.itextpdf</groupId>
                <artifactId>itext-asian</artifactId>
                <version>5.2.0</version>
            </dependency>

package com.zzg.html.trans.pdf;
    
    import java.io.ByteArrayInputStream;
    import java.io.FileOutputStream;
    import java.io.InputStream;
    import java.io.OutputStream;
    import java.nio.charset.Charset;
    
    import com.itextpdf.text.Document;
    import com.itextpdf.text.pdf.PdfWriter;
    import com.itextpdf.tool.xml.XMLWorkerHelper;
    
    public class HtmlTransPDF {
    	/**
    	 * 
    	 * @Title: htmlTransPdf   
    	 * @Description: html 转 pdf ,简单字符和数字  
    	 * @param: @param inputStream
    	 * @param: @param outputStream      
    	 * @return: void      
    	 * @throws
    	 */
    	public static void htmlTransPdf(InputStream inputStream, OutputStream outputStream){
    		try{
    			 Document document = new Document();
    	            // 为该Document创建一个Writer实例
    	            PdfWriter pdfwriter = PdfWriter.getInstance(document,
    	            		outputStream);
    	            pdfwriter.setViewerPreferences(PdfWriter.HideToolbar);
    	            // 打开当前的document
    	            document.open();
    	            XMLWorkerHelper.getInstance().parseXHtml(pdfwriter, document,inputStream);
    	            document.close();
    
    		}catch(Exception e){
    			e.printStackTrace();
    		}
    	}
    	
    	/**
    	 * 
    	 * @Title: htmlTransPdfChinese   
    	 * @Description: html 转 pdf, 简单中文
    	 * @param: @param pdfFile
    	 * @param: @param content      
    	 * @return: void      
    	 * @throws
    	 */
    	public static void htmlTransPdfChinese(String pdfFile, String content){
    		try{
    			 Document document = new Document();
    	         // 为该Document创建一个Writer实例
    	         PdfWriter pdfwriter = PdfWriter.getInstance(document,
    	        		 new FileOutputStream(pdfFile));
    	         pdfwriter.setViewerPreferences(PdfWriter.HideToolbar);
    	         // 打开当前的document
    	         document.open();
    	         XMLWorkerHelper.getInstance().parseXHtml(pdfwriter, document,new ByteArrayInputStream(content.getBytes("Utf-8")),Charset.forName("UTF-8"));
    	         document.close();
    
    		}catch(Exception e){
    			e.printStackTrace();
    		}
    	}
    	
    	
    }

测试代码：

package com.zzg.html.trans.pdf.test;
    
    import java.io.BufferedReader;
    import java.io.File;
    import java.io.FileInputStream;
    import java.io.FileNotFoundException;
    import java.io.FileOutputStream;
    import java.io.IOException;
    import java.io.InputStreamReader;
    import java.io.UnsupportedEncodingException;
    
    import com.zzg.html.trans.pdf.HtmlTransPDF;
    
    public class HtmlTransPDFTest {
    
    //	public static void main(String[] args) {
    //		// TODO Auto-generated method stub
    //		String htmlPath = "c:\\image\\2.html";
    //		String pdfPath ="c:\\image\\2.pdf";
    //		File htmlFile = new File(htmlPath);
    //		File pdfFile = new File(pdfPath);
    //		if(htmlFile.exists()){
    //			if(!pdfFile.exists()){
    //				try {
    //					pdfFile.createNewFile();
    //				} catch (IOException e) {
    //					// TODO Auto-generated catch block
    //					e.printStackTrace();
    //				}
    //			}
    //			// html开始转换
    //			try {
    //				HtmlTransPDF.htmlTransPdf(new FileInputStream(htmlFile), new FileOutputStream(pdfFile));
    //			} catch (FileNotFoundException e) {
    //				// TODO Auto-generated catch block
    //				e.printStackTrace();
    //			}
    //		}
    //	}
    	
    	public static void main(String[] args) {
    		String htmlPath = "C:\\image\\2.html";
    		String pdfPath = "C:\\image\\3.pdf";
    		String content = "";
    		File htmlFile = new File(htmlPath);
    		File pdfFile = new File(pdfPath);
    		if(htmlFile.exists()){
    			if(!pdfFile.exists()){
    				try {
    					pdfFile.createNewFile();
    				} catch (IOException e) {
    					// TODO Auto-generated catch block
    					e.printStackTrace();
    				}
    			}
    			// 开始读取html 文件内容
    			BufferedReader br;
    			try {
    				br = new BufferedReader(new InputStreamReader(
    						new FileInputStream(htmlFile), "UTF-8"));
    				String row = "";
    				while ((row = br.readLine()) != null) {
    					// System.out.println(t);
    					content += row;
    				}
    				HtmlTransPDF.htmlTransPdfChinese(pdfPath, content);
    			} catch (UnsupportedEncodingException e) {
    				// TODO Auto-generated catch block
    				e.printStackTrace();
    			} catch (FileNotFoundException e) {
    				// TODO Auto-generated catch block
    				e.printStackTrace();
    			} catch (IOException e) {
    				// TODO Auto-generated catch block
    				e.printStackTrace();
    			}
    			
    
    		}
    	}
    
    }