{"id":20991,"date":"2024-03-15T21:19:50","date_gmt":"2024-03-15T21:19:50","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/java-uses-lowagie-to-dynamically-generate-pdfs-based-on-a-template\/"},"modified":"2024-03-21T19:25:07","modified_gmt":"2024-03-21T19:25:07","slug":"java-uses-lowagie-to-dynamically-generate-pdfs-based-on-a-template","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/java-uses-lowagie-to-dynamically-generate-pdfs-based-on-a-template\/","title":{"rendered":"Java uses lowagie to dynamically generate PDFs based on a template."},"content":{"rendered":"

To dynamically generate PDFs using lowagie based on a template, you can follow these steps:<\/p>\n

    \n
  1. Firstly, you need to download the iText library jar file from the official website of lowagie, and then add it to the classpath of your Java project.<\/li>\n
  2. Create a Java class to generate PDF. You can use the following code as a starting point:<\/li>\n<\/ol>\n
    import<\/span> com.lowagie.text.Document;\r\nimport<\/span> com.lowagie.text.DocumentException;\r\nimport<\/span> com.lowagie.text.pdf.PdfReader;\r\nimport<\/span> com.lowagie.text.pdf.PdfStamper;\r\n\r\nimport<\/span> java.io.FileOutputStream;\r\nimport<\/span> java.io.IOException;\r\n\r\npublic<\/span> class<\/span> PdfGenerator<\/span> {\r\n    public<\/span> static<\/span> void<\/span> main<\/span>(String[] args)<\/span> {\r\n        try<\/span> {\r\n            \/\/ \u8bfb\u53d6\u6a21\u677f\u6587\u4ef6<\/span>\r\n            PdfReader<\/span> reader<\/span> =<\/span> new<\/span> PdfReader<\/span>(\"template.pdf\"<\/span>);\r\n            \/\/ \u521b\u5efa\u8f93\u51fa\u6587\u4ef6<\/span>\r\n            FileOutputStream<\/span> fileOutputStream<\/span> =<\/span> new<\/span> FileOutputStream<\/span>(\"output.pdf\"<\/span>);\r\n            \/\/ \u521b\u5efaPDF\u6587\u6863\u5bf9\u8c61<\/span>\r\n            Document<\/span> document<\/span> =<\/span> new<\/span> Document<\/span>();\r\n            \/\/ \u521b\u5efaPDF\u5199\u5165\u5668<\/span>\r\n            PdfStamper<\/span> stamper<\/span> =<\/span> new<\/span> PdfStamper<\/span>(reader, fileOutputStream);\r\n            \r\n            \/\/ \u5728\u6a21\u677f\u7684\u6307\u5b9a\u4f4d\u7f6e\u63d2\u5165\u52a8\u6001\u5185\u5bb9<\/span>\r\n            \/\/ \u4f7f\u7528AcroFields\u7c7b\u53ef\u4ee5\u83b7\u53d6\u6a21\u677f\u4e2d\u7684\u8868\u5355\u57df\uff0c\u7136\u540e\u6839\u636e\u9700\u8981\u8bbe\u7f6e\u5185\u5bb9<\/span>\r\n            \/\/ \u4f8b\u5982\uff1astamper.getAcroFields().setField(\"fieldName\", \"fieldValue\");<\/span>\r\n            \r\n            \/\/ \u5173\u95edPDF\u5199\u5165\u5668\u548c\u8f93\u51fa\u6d41<\/span>\r\n            stamper.close();\r\n            fileOutputStream.close();\r\n        } catch<\/span> (IOException | DocumentException e) {\r\n            e.printStackTrace();\r\n        }\r\n    }\r\n}\r\n<\/code><\/pre>\n
      \n
    1. In the code, you will need to use PdfReader to read the template file and then use PdfStamper to generate a new PDF file. You can use the AcroFields class to access the form fields in the template and set the content as needed.<\/li>\n
    2. Update the references to “template.pdf” and “output.pdf” in the code to your actual template file and output file paths.<\/li>\n
    3. Running the code will generate a new PDF file based on the template.<\/li>\n<\/ol>\n
      Please note that the lowagie library is no longer being maintained. We recommend using iText 7 to generate PDFs instead. iText 7 is the latest version of iText with more powerful features and easier usability.<\/p>\n","protected":false},"excerpt":{"rendered":"
      To dynamically generate PDFs using lowagie based on a template, you can follow these steps: Firstly, you need to download the iText library jar file from the official website of lowagie, and then add it to the classpath of your Java project. Create a Java class to generate PDF. You can use the following code […]<\/p>\n","protected":false},"author":13,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-20991","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nJava uses lowagie to dynamically generate PDFs based on a template. - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/blog\/java-uses-lowagie-to-dynamically-generate-pdfs-based-on-a-template\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Java uses lowagie to dynamically generate PDFs based on a template.\" \/>\n<meta property=\"og:description\" content=\"To dynamically generate PDFs using lowagie based on a template, you can follow these steps: Firstly, you need to download the iText library jar file from the official website of lowagie, and then add it to the classpath of your Java project. 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