java生成pdf文件

嗯，第一次写博客。通过互联网学习了很多，不能一直当伸手党，自己也要学会分享~~

前几天公司项目需要开发个生成pdf的功能，网上看了很多例子没找到满意的，折腾好久后使用docx4j-ImportXHTML+freemarker实现了功能。废话不多说了，上代码

Maven依赖

<dependencies>
<dependency>
<groupId>org.freemarker</groupId>
<artifactId>freemarker</artifactId>
<version>2.3.22</version>
</dependency>
<dependency>
<groupId>org.jsoup</groupId>
<artifactId>jsoup</artifactId>
<version>1.8.1</version>
</dependency>
<dependency>
<groupId>org.docx4j</groupId>
<artifactId>docx4j-ImportXHTML</artifactId>
<version>3.2.2</version>
<exclusions>
<exclusion>
<artifactId>slf4j-log4j12</artifactId>
<groupId>org.slf4j</groupId>
</exclusion>
<exclusion>
<artifactId>log4j</artifactId>
<groupId>log4j</groupId>
</exclusion>
</exclusions>
</dependency>
</dependencies>

核心工具类

package com.zfsoft.file.utils;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.StringWriter;
import java.util.Locale;
import java.util.Map;

import org.docx4j.Docx4J;
import org.docx4j.convert.in.xhtml.XHTMLImporterImpl;
import org.docx4j.fonts.IdentityPlusMapper;
import org.docx4j.fonts.Mapper;
import org.docx4j.fonts.PhysicalFont;
import org.docx4j.fonts.PhysicalFonts;
import org.docx4j.jaxb.Context;
import org.docx4j.model.structure.PageSizePaper;
import org.docx4j.openpackaging.exceptions.Docx4JException;
import org.docx4j.openpackaging.packages.WordprocessingMLPackage;
import org.docx4j.wml.RFonts;
import org.docx4j.wml.RPr;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Entities;

import com.zfsoft.file.fonts.ChineseFont;

import freemarker.core.ParseException;
import freemarker.template.Configuration;
import freemarker.template.MalformedTemplateNameException;
import freemarker.template.Template;
import freemarker.template.TemplateException;
import freemarker.template.TemplateNotFoundException;

public class FreemarkerUtil {

/**
* 生成pdf文件
* @param template 模版文件
* @param data 填充数据
* @param landscape true：横版，false 竖版
* @return
* @throws Exception
*/
public static File getPdfFile(File template,Map<String, Object> data,
99ef
boolean landscape) throws Exception{

String html = FreemarkerUtil.getContent(template, data);
Document doc = Jsoup.parse(html);

doc.outputSettings().syntax(Document.OutputSettings.Syntax.xml).escapeMode(Entities.EscapeMode.xhtml);  //转为 xhtml 格式
File file = savePdf(xhtml2word(doc,landscape));

return file;
}

/**
* 生成word文件
* @param template 模版文件
* @param data 填充数据
* @param landscape true：横版，false 竖版
* @return
* @throws Exception
*/
public static File getWordFile(File template,Map<String, Object> data,boolean landscape) throws Exception{

String html = FreemarkerUtil.getContent(template, data);
Document doc = Jsoup.parse(html);

doc.outputSettings().syntax(Document.OutputSettings.Syntax.xml).escapeMode(Entities.EscapeMode.xhtml);  //转为 xhtml 格式

File file = saveDocx(xhtml2word(doc,landscape));
return file;
}

/*
* 将 {@link org.jsoup.nodes.Document} 对象转为 {@link org.docx4j.openpackaging.packages.WordprocessingMLPackage}
* landscape true 横版，false 竖版
*/
private static WordprocessingMLPackage xhtml2word(Document doc,boolean landscape) throws Exception {

WordprocessingMLPackage wordMLPackage = WordprocessingMLPackage.createPackage(PageSizePaper.A4, landscape); //A4纸，

configSimSunFont(wordMLPackage); //配置中文字体

XHTMLImporterImpl xhtmlImporter = new XHTMLImporterImpl(wordMLPackage);

//导入 xhtml
wordMLPackage.getMainDocumentPart().getContent().addAll(xhtmlImporter.convert(doc.html(), doc.baseUri()));

return wordMLPackage;
}

/*
* 为 {@link org.docx4j.openpackaging.packages.WordprocessingMLPackage} 配置中文字体
*/
private static void configSimSunFont(WordprocessingMLPackage wordMLPackage) throws Exception {
Mapper fontMapper = new IdentityPlusMapper();
wordMLPackage.setFontMapper(fontMapper);

ChineseFont[] fonts = ChineseFont.values();
for (ChineseFont font : fonts){
//加载字体文件（解决linux环境下无中文字体问题）
PhysicalFonts.addPhysicalFont(font.getFontName(), font.getFontUrl());
PhysicalFont simsunFont = PhysicalFonts.get(font.getFontName());
fontMapper.put(font.getFontName(), simsunFont);
}

//设置文件默认字体
RFonts rfonts = Context.getWmlObjectFactory().createRFonts();
rfonts.setAsciiTheme(null);
rfonts.setAscii(ChineseFont.SIMSUM.getFontName());
RPr rpr = wordMLPackage.getMainDocumentPart().getPropertyResolver().getDocumentDefaultRPr();
rpr.setRFonts(rfonts);

}

/*
* 将 {@link org.docx4j.openpackaging.packages.WordprocessingMLPackage} 存为 pdf
*/
private static File savePdf(WordprocessingMLPackage wordMLPackage) throws FileNotFoundException, Docx4JException {

File file = new File(genFilePath() + ".pdf");
OutputStream os = null;

try {
os = new FileOutputStream(file);
Docx4J.toPDF(wordMLPackage, os);
} catch (FileNotFoundException e) {
throw e;
} catch (Docx4JException e) {
throw e;
} finally{
if (os != null){
try {
os.flush();
os.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}

return file;
}

/*
* 将 {@link org.docx4j.openpackaging.packages.WordprocessingMLPackage} 存为 docx
*/
public static File saveDocx(WordprocessingMLPackage wordMLPackage) throws Exception {

File file = new File(genFilePath() + ".docx");
wordMLPackage.save(file); //保存到 docx 文件

return file;
}

/*
* 生成临时文件位置
*/
private static String genFilePath() {
return System.getProperty("user.dir") + "/" + System.currentTimeMillis();
}

private static String getContent(File templateFile, Map<String,Object> data)
throws TemplateNotFoundException, MalformedTemplateNameException,
ParseException, IOException, TemplateException {

Configuration config = getFreemarkerConfig();
config.setDirectoryForTemplateLoading(templateFile.getParentFile());
//模版文件名
Template template= config.getTemplate(templateFile.getName());
template.setOutputEncoding("UTF-8");
StringWriter writer = new StringWriter();
template.process(data, writer);
writer.flush();
String html = writer.toString();
return html;
}

private static Configuration getFreemarkerConfig()
throws IOException {
Configuration config = new Configuration(Configuration.DEFAULT_INCOMPATIBLE_IMPROVEMENTS);
config.setEncoding(Locale.CHINA, "utf-8");
return config;
}

}

源码地址：https://github.com/super-qupenghui/toolbox/tree/master/file-utils