java各种格式转pdf_springboot各种格式转pdf的实例代码
添加依赖com.documents4jdocuments4j-local1.0.3com.documents4jdocuments4j-transformer-msoffice-word1.0.3com.itextpdfitextpdf5.5.10测试方法package com.ruoyi.mlogin.util;import com.documents4j.api.DocumentType;im
添加依赖
com.documents4j
documents4j-local
1.0.3
com.documents4j
documents4j-transformer-msoffice-word
1.0.3
com.itextpdf
itextpdf
5.5.10
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;
@Configuration
public 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 {
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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