html转pdf

2023-11-28 16:33:13 +08:00
parent 9c6a5fc390
commit 9f9da3a0dc
7 changed files with 234 additions and 4 deletions
@@ -0,0 +1,148 @@
+package com.ruoyi.common.utils;
+
+import com.documents4j.api.DocumentType;
+import com.documents4j.api.IConverter;
+import com.documents4j.job.LocalConverter;
+import com.itextpdf.text.Document;
+import com.itextpdf.text.PageSize;
+import com.itextpdf.text.pdf.PdfWriter;
+import com.itextpdf.tool.xml.XMLWorkerHelper;
+
+import java.io.*;
+import java.nio.charset.Charset;
+import java.nio.file.Files;
+
+/**
+ * @author wangqiong
+ * @description pdf转换工具类
+ * @date 2023-11-28 15:20
+ */
+public class PdfUtils {
+    /**
+     * 将html字符串转为pdf
+     * @param pdfFilePath 保存的路径
+     * @param htmlcontent:必须是完整的html格式，比如<html><body>123</body></html>
+     */
+    public static boolean htmlStringConvertToPDF(String pdfFilePath, String htmlcontent) {
+        Document document = new Document();
+        PdfWriter writer = null;
+        try {
+            if(!new File(pdfFilePath).exists()){
+                new File(pdfFilePath).createNewFile();
+            }
+            writer = PdfWriter.getInstance(document, new FileOutputStream(pdfFilePath));
+            // 设置底部距离60，解决重叠问题
+            document.setPageSize(PageSize.A4);
+            document.setMargins(50, 45, 50, 60);
+            document.setMarginMirroring(false);
+            document.open();
+            XMLWorkerHelper.getInstance().parseXHtml(writer, document, new ByteArrayInputStream(htmlcontent.getBytes("UTF-8")), null, Charset.forName("UTF-8"));
+        } catch (Exception e) {
+           return false;
+        } finally {
+            if (null != document) {
+                document.close();
+            }
+            if (null != writer) {
+                writer.close();
+            }
+        }
+        return true;
+    }
+    /**
+     * 根据html文件生成pdf
+     * @param pdfFilePath pdf文件生成路径
+     * @param htmlFilePath html文件路径
+     */
+    public static boolean htmlFileConvertToPDF(String pdfFilePath, String htmlFilePath) {
+        Document document = new Document();
+        PdfWriter writer = null;
+        FileOutputStream fileOutputStream = null;
+        FileInputStream fileInputStream = null;
+        try {
+            fileOutputStream = new FileOutputStream(pdfFilePath);
+            writer = PdfWriter.getInstance(document, fileOutputStream);
+            // 设置底部距离60，解决重叠问题
+            document.setPageSize(PageSize.A4);
+            document.setMargins(50, 45, 50, 60);
+            document.setMarginMirroring(false);
+            document.open();
+            StringBuffer sb = new StringBuffer();
+            fileInputStream = new FileInputStream(htmlFilePath);
+            BufferedReader br = new BufferedReader(new InputStreamReader(fileInputStream, "UTF-8"));
+            String readStr = "";
+            while ((readStr = br.readLine()) != null) {
+                sb.append(readStr);
+            }
+            XMLWorkerHelper.getInstance().parseXHtml(writer, document, new ByteArrayInputStream(sb.toString().getBytes("Utf-8")), null, Charset.forName("UTF-8"));
+        } catch (Exception e) {
+            e.printStackTrace();
+        } finally {
+            if (null != document) {
+                document.close();
+            }
+            if (null != writer) {
+                writer.close();
+            }
+            if (null != fileInputStream) {
+                try {
+                    fileInputStream.close();
+                } catch (IOException e) {
+                    e.printStackTrace();
+                }
+            }
+            if (null != fileOutputStream) {
+                try {
+                    fileOutputStream.close();
+                } catch (IOException e) {
+                    e.printStackTrace();
+                }
+            }
+        }
+        return true;
+    }
+
+    /**
+     * docx转pdf
+     * @param pdfSaveDirectory:文件保存目录，例：D:\\pdf\\
+     * @param fileName：保存的文件名称，例：test.pdf
+     * @param docxFile：需要转换的docx文件
+     * @return
+     */
+    private static boolean docxConvertToPDF(String pdfSaveDirectory,String fileName,File docxFile) {
+        // 不存在则新建
+        File directory = new File(pdfSaveDirectory);
+        if (!directory.exists()) {
+            directory.mkdirs();
+        }
+        String pdfFilePath = pdfSaveDirectory + fileName;
+        File outputFile = new File(pdfFilePath);
+        try {
+            InputStream docxInputStream = Files.newInputStream(docxFile.toPath());
+            OutputStream outputStream = Files.newOutputStream(outputFile.toPath());
+            IConverter converter = LocalConverter.builder().build();
+            converter.convert(docxInputStream).as(DocumentType.DOCX).to(outputStream).as(DocumentType.PDF).execute();
+            docxInputStream.close();
+            outputStream.close();
+
+        } catch (Exception e) {
+            return false;
+        }
+        return true;
+    }
+
+    public static void main(String[] args) {
+        try {
+
+            String pdfFile = "D:\\test2.pdf";
+            String htmlContent1 = "<h1>夫士大夫士大夫发</h1><p>会见韩国机构行家</p ><h2>地方鬼地方鬼地方三个广泛的</h2>";
+            String htmlContent = "<html><body style=\"font-size:12.0pt; font-family:宋体\">" + "<h1>夫士大夫士大夫发</h1><p>会见韩国机构行家</p ><h2>地方鬼地方鬼地方三个广泛的</h2></body></html>";
+            String htmlContent2 = "<html><body >" + "<h1>夫士大夫士大夫发</h1><p>会见韩国机构行家</p ><h2>地方鬼地方鬼地方三个广泛的</h2></body></html>";
+
+            htmlStringConvertToPDF(pdfFile,htmlContent);
+//            parseHtml2PdfByFilePath(pdfFile,htmlFile);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+}