{"id":5576,"date":"2023-12-05T08:59:00","date_gmt":"2023-12-05T00:59:00","guid":{"rendered":"https:\/\/ixyzero.com\/blog\/?p=5576"},"modified":"2023-12-04T21:00:06","modified_gmt":"2023-12-04T13:00:06","slug":"%e5%9c%a8-java-%e4%b8%ad%e4%bd%bf%e7%94%a8-pdfbox-%e6%93%8d%e4%bd%9cpdf%e6%96%87%e4%bb%b6","status":"publish","type":"post","link":"https:\/\/ixyzero.com\/blog\/archives\/5576.html","title":{"rendered":"\u5728 Java \u4e2d\u4f7f\u7528 PDFBox \u64cd\u4f5cPDF\u6587\u4ef6"},"content":{"rendered":"\n<p>=Start=<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u7f18\u7531\uff1a<\/h4>\n\n\n\n<p>\u524d\u6bb5\u65f6\u95f4\u770b\u5230\u4e00\u7bc7\u6587\u7ae0\u60f3\u8d77\u6765\u7684\uff0c\u6700\u8fd1\u6709\u65f6\u95f4\u7b80\u5355\u505a\u4e86\u6d4b\u8bd5\uff0c\u4ee5\u53ca\u4e00\u4e9b\u4ee3\u7801\u548c\u529f\u80fd\u7684\u5b66\u4e60\uff0c\u8fd9\u91cc\u7b80\u5355\u6574\u7406\u4e00\u4e0b\uff0c\u65b9\u4fbf\u540e\u9762\u6709\u9700\u8981\u7684\u65f6\u5019\u53c2\u8003\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u6b63\u6587\uff1a<\/h4>\n\n\n\n<h5 class=\"wp-block-heading\">\u53c2\u8003\u89e3\u7b54\uff1a<\/h5>\n\n\n\n<p>\u5e38\u89c1\u7684\u4e00\u4e9bPDF\u6587\u4ef6\u8bfb\u5199\u7684\u9700\u6c42\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8bfb\u53d6PDF\u6587\u4ef6\u5185\u5bb9<\/li>\n\n\n\n<li>\u7ed9\u6bcf\u4e00\u9875\u5185\u5bb9\u6dfb\u52a0\u7279\u5b9a\u201c\u4e0d\u53ef\u89c1\u201d\u6587\u672c<\/li>\n\n\n\n<li>\u7ed9\u6bcf\u4e00\u9875\u5185\u5bb9\u6dfb\u52a0\u7279\u5b9a\u5b57\u7b26\u4e32\u6c34\u5370<\/li>\n\n\n\n<li>\u8bfb\u53d6PDF\u6587\u4ef6\u7684meta\u4fe1\u606f<\/li>\n\n\n\n<li>\u7ed9PDF\u6587\u4ef6\u5199\u5165\u7279\u5b9a\u7684meta\u4fe1\u606f<\/li>\n<\/ul>\n\n\n\n<p>\u5176\u5b83\u7279\u6b8a\u60c5\u51b5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6c34\u5370\u5982\u4f55\u8fdb\u884c\u65cb\u8f6c\u3001\u5c45\u4e2d\u7b49\u8bbe\u7f6e\uff1f<\/li>\n\n\n\n<li>\u591a\u4e2aPDF\u6587\u4ef6\u5982\u4f55\u5408\u5e76\u62101\u4e2a\uff1f<\/li>\n\n\n\n<li>\u5982\u4f55\u521b\u5efa\u8868\u683c\uff1f<\/li>\n\n\n\n<li>\u5982\u4f55\u63d0\u53d6\u56fe\u50cf\uff1f<\/li>\n\n\n\n<li>\u2026\u2026<\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u91cc\u7b80\u5355\u6574\u7406\u4e00\u4e0b\u5e38\u89c1\u7684PDF\u6587\u4ef6\u8bfb\u5199\u9700\u6c42\u7684\u4ee3\u7801\u7247\u6bb5\uff0c\u5176\u5b83\u7684\u529f\u80fd\u5b9e\u73b0\u540e\u9762\u6309\u5b9e\u9645\u9700\u6c42\u60c5\u51b5\u8fdb\u884c\u8865\u5145\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;!-- https:\/\/mvnrepository.com\/artifact\/org.apache.pdfbox\/pdfbox --&gt;\n&lt;dependency&gt;\n    &lt;groupId&gt;org.apache.pdfbox&lt;\/groupId&gt;\n    &lt;artifactId&gt;pdfbox&lt;\/artifactId&gt;\n    &lt;version&gt;2.0.30&lt;\/version&gt;\n&lt;\/dependency&gt;<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>package com.example;\n\nimport org.apache.pdfbox.pdmodel.PDDocument;\nimport org.apache.pdfbox.pdmodel.PDPage;\nimport org.apache.pdfbox.pdmodel.PDPageContentStream;\nimport org.apache.pdfbox.pdmodel.font.PDType1Font;\nimport org.apache.pdfbox.text.PDFTextStripper;\n\nimport java.io.File;\nimport java.io.IOException;\n\n\/**\n * @author ixyzero\n * Created on 2023-12-01\n *\/\npublic class PdfBoxWatermark {\n    \/\/ \u4f20\u5165\u6587\u4ef6\u5bf9\u8c61\uff0c\u8fd4\u56de\u6587\u4ef6\u5185\u5bb9\u5b57\u7b26\u4e32\n    static String getPdfText(File pdfFile) throws IOException {\n        PDDocument doc = PDDocument.load(pdfFile);\n        return new PDFTextStripper().getText(doc);\n    }\n\n    \/\/ \u7ed9\u4f20\u5165\u7684PDF\u6587\u4ef6\u5bf9\u8c61\u7684\u6bcf\u4e00\u9875\u4e0a\uff0c\u6dfb\u52a0\u7279\u5b9a\u7684\u6587\u672c\u5b57\u7b26\u4e32\uff08\u5f53\u5b57\u4f53\u7684\u5927\u5c0f\u3001\u989c\u8272\u4ee5\u53ca\u6240\u5728\u4f4d\u7f6e\u6bd4\u8f83\u660e\u663e\u65f6\uff0c\u5176\u5b9e\u5c31\u7c7b\u4f3c\u4e8e\u6587\u672c\u6c34\u5370\u7684\u6548\u679c\uff09\n    public static void addText(PDDocument document, String text) throws IOException {\n        \/\/ \u5728\u6dfb\u52a0\u7279\u5b9a\u6587\u672c\u4e4b\u524d\uff0c\u5148\u6dfb\u52a0\u81ea\u5b9a\u4e49\u7684\u5143\u4fe1\u606f\n        document.getDocumentInformation().setCustomMetadataValue(\"customFieldName\", \"customStringValueHere\");\n\n        \/\/ \u904d\u5386 PDF \u4e2d\u7684\u6240\u6709\u9875\u9762\n        for (int i = 0; i &lt; document.getNumberOfPages(); i++) {\n            PDPage page = document.getPage(i);\n\n            \/\/ System.out.println(page.getMetadata()); \/\/ meta \u4e00\u822c\u662f document \u7ea7\u522b\uff0c\u800c\u975e page \u7ea7\u522b\u7684\uff0c\u6240\u4ee5\u8fd9\u91cc\u4f1a\u8fd4\u56de null\n            System.out.println(page.getRotation()); \/\/ \u83b7\u53d6\u65cb\u8f6c\u89d2\u5ea6\uff0c\u6ca1\u6709\u65cb\u8f6c\u65f6\u503c\u4e3a0\n            System.out.println(page.getMediaBox().getHeight()); \/\/ \u83b7\u53d6\u9875\u9762\u9ad8\u5ea6\uff0c\u5bf9\u4e8eA4\u7eb8\u6765\u8bf4\uff0c\u8fd9\u91cc\u662f 842 \u4e2a\u50cf\u7d20\n            System.out.println(page.getMediaBox().getWidth()); \/\/ \u83b7\u53d6\u9875\u9762\u5bbd\u5ea6\uff0c\u5bf9\u4e8eA4\u7eb8\u6765\u8bf4\uff0c\u8fd9\u91cc\u662f 595 \u4e2a\u50cf\u7d20\n\n            \/\/ \u4ee5append\u6a21\u5f0f\u521b\u5efa\u4e00\u4e2a PDPageContentStream \u5bf9\u8c61\n            PDPageContentStream contentStream = new PDPageContentStream(document, page, PDPageContentStream.AppendMode.APPEND, true, true);\n\n            \/\/ \u8bbe\u7f6e\u5b57\u4f53\u548c\u5b57\u53f7\uff0c\u4ee5\u53ca\u5b57\u4f53\u989c\u8272\n            contentStream.setFont(PDType1Font.TIMES_ROMAN, 48); \/\/ \u8bbe\u7f6e\u5b57\u4f53\u548c\u5b57\u53f7\n            contentStream.setNonStrokingColor(1f, 0f, 0f); \/\/ \u8bbe\u7f6e\u5b57\u4f53\u989c\u8272\n\n            \/\/ \u6dfb\u52a0\u6587\u672c\u6c34\u5370\n            contentStream.beginText();\n            contentStream.newLineAtOffset(200,1); \/\/ \u6307\u5b9a\u6dfb\u52a0\u7684\u4f4d\u7f6e\n            contentStream.showText(text); \/\/ \u6dfb\u52a0\u6587\u672c\u5185\u5bb9\n            contentStream.endText();\n\n            contentStream.close(); \/\/ \u5904\u7406\u4e86\u4e4b\u540e\u9700\u8981\u53ca\u65f6\u5173\u95ed\n        }\n    }\n\n    public static void main(String&#91;] args) throws IOException {\n        \/\/ System.out.println(getPdfText(new File(\"original.pdf\")));\n\n        \/\/ \u8bfb\u53d6 PDF \u6587\u4ef6\u7528\u4ee5\u751f\u6210\u4e00\u4e2a PDDocument \u5bf9\u8c61\n        PDDocument document = PDDocument.load(new File(\"original.pdf\"));\n\n        \/\/ \u67e5\u8be2\u5e76\u6253\u5370\u4e00\u4e9b\u6587\u6863\u7684\u5143\u4fe1\u606f\u5b57\u6bb5\n        System.out.println(document.getDocumentInformation().getMetadataKeys());\n        System.out.println(document.getDocumentInformation().getCreator());\n        System.out.println(document.getDocumentInformation().getCreationDate().getTime());\n        System.out.println(document.getDocumentInformation().getKeywords());\n        System.out.println(document.getDocumentInformation().getTitle());\n        System.out.println(document.getDocumentInformation().getProducer());\n\n        \/\/ \u6dfb\u52a0\u6587\u672c\u6c34\u5370\n        addText(document,\"ixyzero.com\");\n\n        \/\/ \u67e5\u8be2\u5e76\u6253\u5370\u4e00\u4e9b\u6587\u6863\u7684\u5143\u4fe1\u606f\u5b57\u6bb5\n        System.out.println(document.getDocumentInformation().getCustomMetadataValue(\"fieldNameNotExists\"));\n        System.out.println(document.getDocumentInformation().getCustomMetadataValue(\"customFieldName\"));\n\n        \/\/ \u4fdd\u5b58\u4fee\u6539\u540e\u7684 PDF \u6587\u4ef6\n        document.save(new File(\"output-pdfbox.pdf\"));\n        document.close();\n\n        System.out.println(getPdfText(new File(\"output-pdfbox.pdf\")));\n    }\n\n}<\/code><\/pre>\n\n\n\n<h5 class=\"wp-block-heading\">\u53c2\u8003\u94fe\u63a5\uff1a<\/h5>\n\n\n\n<p>SpringBoot \u5b9e\u73b0 PDF \u6dfb\u52a0\u6c34\u5370\uff0c\u6211\u6709 5 \u79cd\u5b9e\u73b0\u65b9\u6848<br><a href=\"https:\/\/mp.weixin.qq.com\/s\/gphcp_L80OzOXxsPAijgig\">https:\/\/mp.weixin.qq.com\/s\/gphcp_L80OzOXxsPAijgig<\/a><\/p>\n\n\n\n<p>The Apache PDFBox library is an open source Java tool for working with PDF documents.<br><a href=\"https:\/\/mvnrepository.com\/artifact\/org.apache.pdfbox\/pdfbox\">https:\/\/mvnrepository.com\/artifact\/org.apache.pdfbox\/pdfbox<\/a><\/p>\n\n\n\n<p>How to extract text from a PDF file with Apache PDFBox<br><a href=\"https:\/\/stackoverflow.com\/questions\/23813727\/how-to-extract-text-from-a-pdf-file-with-apache-pdfbox\">https:\/\/stackoverflow.com\/questions\/23813727\/how-to-extract-text-from-a-pdf-file-with-apache-pdfbox<\/a><\/p>\n\n\n\n<p>Adding Text to an Existing PDF Document<br><a href=\"https:\/\/www.tutorialspoint.com\/pdfbox\/pdfbox_adding_text.htm\">https:\/\/www.tutorialspoint.com\/pdfbox\/pdfbox_adding_text.htm<\/a><\/p>\n\n\n\n<p>PDFBox Working with Metadata<br><a href=\"https:\/\/www.javatpoint.com\/pdfbox-working-with-metadata\">https:\/\/www.javatpoint.com\/pdfbox-working-with-metadata<\/a><\/p>\n\n\n\n<p>How to get raw text from pdf file using java<br><a href=\"https:\/\/stackoverflow.com\/questions\/18098400\/how-to-get-raw-text-from-pdf-file-using-java\">https:\/\/stackoverflow.com\/questions\/18098400\/how-to-get-raw-text-from-pdf-file-using-java<\/a><\/p>\n\n\n\n<p>A4 size in pixels<br><a href=\"https:\/\/www.a4-size.com\/a4-size-in-pixels\/\">https:\/\/www.a4-size.com\/a4-size-in-pixels\/<\/a><\/p>\n\n\n\n<p>PdfBox 2.0.0 write text at given postion in a page<br><a href=\"https:\/\/stackoverflow.com\/questions\/36449776\/pdfbox-2-0-0-write-text-at-given-postion-in-a-page\">https:\/\/stackoverflow.com\/questions\/36449776\/pdfbox-2-0-0-write-text-at-given-postion-in-a-page<\/a><\/p>\n\n\n\n<p>Rotate watermark text at 45 degree angle across the center Apache PDFBox<br><a href=\"https:\/\/stackoverflow.com\/questions\/53108150\/rotate-watermark-text-at-45-degree-angle-across-the-center-apache-pdfbox\">https:\/\/stackoverflow.com\/questions\/53108150\/rotate-watermark-text-at-45-degree-angle-across-the-center-apache-pdfbox<\/a><\/p>\n\n\n\n<p>Using Pdfbox to Align Text in the Center<br><a href=\"https:\/\/copyprogramming.com\/howto\/how-to-center-a-text-using-pdfbox\">https:\/\/copyprogramming.com\/howto\/how-to-center-a-text-using-pdfbox<\/a><\/p>\n\n\n\n<p>How to add metadata to PDF document using PDFbox?<br><a href=\"https:\/\/stackoverflow.com\/questions\/40295264\/how-to-add-metadata-to-pdf-document-using-pdfbox\">https:\/\/stackoverflow.com\/questions\/40295264\/how-to-add-metadata-to-pdf-document-using-pdfbox<\/a><\/p>\n\n\n\n<p>=END=<\/p>\n","protected":false},"excerpt":{"rendered":"<p>=Start= \u7f18\u7531\uff1a \u524d\u6bb5\u65f6\u95f4\u770b\u5230\u4e00\u7bc7\u6587\u7ae0\u60f3\u8d77\u6765\u7684\uff0c\u6700\u8fd1\u6709\u65f6\u95f4\u7b80\u5355\u505a\u4e86\u6d4b\u8bd5\uff0c\u4ee5\u53ca\u4e00\u4e9b\u4ee3\u7801\u548c\u529f\u80fd\u7684\u5b66\u4e60\uff0c\u8fd9\u91cc\u7b80 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23,7,12],"tags":[2090,2087,61,1769,2088,2086,2091,2068,2089],"class_list":["post-5576","post","type-post","status-publish","format-standard","hentry","category-knowledgebase-2","category-programing","category-tools","tag-ghostscript","tag-itext","tag-java","tag-metadata","tag-newlineatoffset","tag-pdfbox","tag-setnonstrokingcolor","tag-snippets","tag-2089"],"views":1954,"_links":{"self":[{"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/posts\/5576","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/comments?post=5576"}],"version-history":[{"count":1,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/posts\/5576\/revisions"}],"predecessor-version":[{"id":5577,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/posts\/5576\/revisions\/5577"}],"wp:attachment":[{"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/media?parent=5576"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/categories?post=5576"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/tags?post=5576"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}