添加依赖

<!--转pdf--> <dependency> <groupId>com.documents4j</groupId> <artifactId>documents4j-local</artifactId> <version>1.0.3</version> </dependency> <dependency> <groupId>com.documents4j</groupId> <artifactId>documents4j-transformer-msoffice-word</artifactId> <version>1.0.3</version> </dependency> <dependency> <groupId>com.itextpdf</groupId> <artifactId>itextpdf</artifactId> <version>5.5.10</version> </dependency>

测试方法

package com.ruoyi.mlogin.util;import com.documents4j.api.DocumentType;import com.documents4j.api.IConverter;import com.documents4j.job.LocalConverter;import com.itextpdf.text.*;import com.itextpdf.text.pdf.PdfWriter;import java.io.*;import java.net.MalformedURLException;/** * @author cai * @version 1.0 * @date 2021/1/4 14:58 */public class Topdf { /** * 转pdf doc docx xls xlsx * @param path */ public void docTopdf(String path) { File inputWord = new File("C:\\Users\\29934\\Documents\\Tencent Files\\2993481541\\FileRecv\\1111.docx"); File outputFile = new File("C:\\Users\\29934\\Documents\\Tencent Files\\2993481541\\FileRecv\\1111.pdf"); try { InputStream docxInputStream = new FileInputStream(inputWord); OutputStream outputStream = new FileOutputStream(outputFile); IConverter converter = LocalConverter.builder().build(); String fileTyle=path.substring(path.lastIndexOf("."),path.length());//获取文件类型 if(".docx".equals(fileTyle)){ converter.convert(docxInputStream).as(DocumentType.DOCX).to(outputStream).as(DocumentType.PDF).execute(); }else if(".doc".equals(fileTyle)){ converter.convert(docxInputStream).as(DocumentType.DOC).to(outputStream).as(DocumentType.PDF).execute(); }else if(".xls".equals(fileTyle)){ converter.convert(docxInputStream).as(DocumentType.XLS).to(outputStream).as(DocumentType.PDF).execute(); }else if(".xlsx".equals(fileTyle)){ converter.convert(docxInputStream).as(DocumentType.XLSX).to(outputStream).as(DocumentType.PDF).execute(); } outputStream.close(); System.out.println("pdf转换成功"); } catch (Exception e) { e.printStackTrace(); } } /** * * 生成pdf文件 * 需要转换的图片路径的数组 */ public static void main(String[] args) { try { String imagesPath = "C:\\Users\\29934\\Documents\\Tencent Files\\2993481541\\FileRecv\\1111.jpg"; File file = new File("C:\\Users\\29934\\Documents\\Tencent Files\\2993481541\\FileRecv\\1111.pdf"); // 第一步：创建一个document对象。 Document document = new Document(); document.setMargins(0, 0, 0, 0); // 第二步： // 创建一个PdfWriter实例， PdfWriter.getInstance(document, new FileOutputStream(file)); // 第三步：打开文档。 document.open(); // 第四步：在文档中增加图片。 if (true) { Image img = Image.getInstance(imagesPath); img.setAlignment(Image.ALIGN_CENTER); // 根据图片大小设置页面，一定要先设置页面，再newPage（），否则无效 document.setPageSize(new Rectangle(img.getWidth(), img.getHeight())); document.newPage(); document.add(img); //下面是对应一个文件夹的图片// File files = new File(imagesPath);// String[] images = files.list();// int len = images.length;//// for (int i = 0; i < len; i++)// {// if (images[i].toLowerCase().endsWith(".bmp")// || images[i].toLowerCase().endsWith(".jpg")// || images[i].toLowerCase().endsWith(".jpeg")// || images[i].toLowerCase().endsWith(".gif")// || images[i].toLowerCase().endsWith(".png")) {// String temp = imagesPath + "\\" + images[i];// Image img = Image.getInstance(temp);// img.setAlignment(Image.ALIGN_CENTER);// // 根据图片大小设置页面，一定要先设置页面，再newPage（），否则无效// document.setPageSize(new Rectangle(img.getWidth(), img.getHeight()));// document.newPage();// document.add(img);// }// } // 第五步：关闭文档。 document.close(); } } catch (FileNotFoundException e) { e.printStackTrace(); } catch (MalformedURLException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } catch (BadElementException e) { e.printStackTrace(); } catch (DocumentException e) { e.printStackTrace(); } }}

补充：下面看下springboot:扩展类型转换器

需求：提交一个字符串到后端的java.sql.Time类型，就报错了:

Failed to convert property value of type [java.lang.String] to required type [java.sql.Time]

正常提交到java.util.Date类型是没有问题的。

所以这里就需要扩展内置的springmvc的转换器

代码如下：

WebConfig ： 添加新的类型转换器

import javax.annotation.PostConstruct;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.context.annotation.Configuration;import org.springframework.core.convert.support.GenericConversionService;import org.springframework.web.bind.support.ConfigurableWebBindingInitializer;import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter;import com.csget.web.converter.StringToTimeConverter;@Configurationpublic class WebConfig { @Autowired private RequestMappingHandlerAdapter requestMappingHandlerAdapter; @PostConstruct public void addConversionConfig() { ConfigurableWebBindingInitializer initializer = (ConfigurableWebBindingInitializer) requestMappingHandlerAdapter .getWebBindingInitializer(); if (initializer.getConversionService() != null) { GenericConversionService genericConversionService = (GenericConversionService) initializer.getConversionService(); genericConversionService.addConverter(new StringToTimeConverter()); } }}

StringToTimeConverter ：类型转换器的具体实现

import java.sql.Time;import java.text.SimpleDateFormat;import java.util.Date;import org.apache.commons.lang3.StringUtils;import org.springframework.core.convert.converter.Converter;public class StringToTimeConverter implements Converter<String, Time> { public Time convert(String value) { Time time = null; if (StringUtils.isNotBlank(value)) { String strFormat = "HH:mm"; int intMatches = StringUtils.countMatches(value, ":"); if (intMatches == 2) { strFormat = "HH:mm:ss"; } SimpleDateFormat format = new SimpleDateFormat(strFormat); Date date = null; try { date = format.parse(value); } catch (Exception e) { e.printStackTrace(); } time = new Time(date.getTime()); } return time; }}

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