Java 读写docx文件后直接转成PDF文件方法

java将docx文件转成pdf文件的实现方法，需要的jar包下载地址：https://download.csdn.net/download/keke921231/10529672

  1.读写docx文件。

需要读写docx文件需要用到poi包，等下会提供下载地址，在读写docx文件之前，需要对docx文件进行操作，打开docx文件后，再需要编辑的地方加上“：${key}”,再在java文件中通过map来对这个值进行编辑，比如map.put(key,value)

docx文件内操作（注意“：”这个符号是中文的，“${}”符号是英文的）：

 编号：${id}
甲方（借款人）：___${jiaName}__________________
身份证号/统一社会信用代码：${jiaIDCard}
住所：${jarAddress}
通讯地址：${jarAddr}

乙方（出借人）：${yiName}
身份证号/统一社会信用代码：${yiIDCard}                                                      
住所：${yiAddress} 
通讯地址：${yiAddr}    

java文件中map的操作：

	Map params = new HashMap();
		params.put("id", "测试编号"  );
		params.put("jiaName", "甲方名称");
		params.put("jiaIDCard", "甲方id号");
		params.put("jarAddress", "甲方住宿");
		params.put("jarAddr", "甲方地址");

		params.put("yiName", "乙方名称");
		params.put("yiIDCard", "乙方id号");
		params.put("yiAddress", "乙方住宿地址");
		params.put("yiAddr", "乙方地址");

有这两个后，接下来是将docx文件中的key，value进行替换

import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.poi.xwpf.extractor.XWPFWordExtractor;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.apache.poi.xwpf.usermodel.XWPFParagraph;
import org.apache.poi.xwpf.usermodel.XWPFRun;

import topdf.StrToPDF;

public class InputDocx {
	private static InputDocx inputDocx;

	public static InputDocx getInputDocx() {
		if (inputDocx == null)
			inputDocx = new InputDocx();
		return inputDocx;
	}

	public String DocxToString(Map params, String wordUrl) {
		XWPFDocument doc = valueInputWord(params, wordUrl);
		if (doc == null)return "";
		
		return new XWPFWordExtractor(doc).getText();

	}

	public XWPFDocument valueInputWord(Map params, String wordUrl) {
		XWPFDocument doc;// word文档对象
		try {
			InputStream in_stream = new FileInputStream(wordUrl);// 文件流
			doc = new XWPFDocument(in_stream);
			replaceInPara(doc, params);

			// OutputStream os = new FileOutputStream("E:\\writejiekuanxieyi.docx");
			// doc.write(os);
			closeStream(in_stream);
			// closeStream(os);
			return doc;
		} catch (IOException e) {
			e.printStackTrace();
		}
		return null;
	}

	/**
	 * 关闭输入流
	 * 
	 * @param is
	 */
	private void closeStream(InputStream is) {
		if (is != null) {
			try {
				is.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}

	/**
	 * 关闭输出流
	 * 
	 * @param os
	 */
	private void closeStream(OutputStream os) {
		if (os != null) {
			try {
				os.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}

	/**
	 * 替换段落里面的变量
	 * 
	 * @param doc
	 *            要替换的文档
	 * @param params
	 *            参数
	 */
	private void replaceInPara(XWPFDocument doc, Map params) {
		Iterator iterator = doc.getParagraphsIterator();
		XWPFParagraph para;

		while (iterator.hasNext()) {
			para = iterator.next();
			replaceInPara(para, params);
		}
	}

	/**
	 * 替换段落里面的变量
	 * 
	 * @param para
	 *            要替换的段落
	 * @param params
	 *            参数
	 */
	private void replaceInPara(XWPFParagraph para, Map params) {
		List runs;
		Matcher matcher;
		System.out.println("para::" + para.getParagraphText());
		if (matcher(para.getParagraphText()).find()) {
			runs = para.getRuns();

			for (int i = 0; i < runs.size(); i++) {
				XWPFRun run = runs.get(i);
				String runText = run.toString();
				System.out.println("runText:1:" + runText);
				matcher = matcher(runText);
				if (matcher.find()) {
					while ((matcher = matcher(runText)).find()) {
						runText = matcher.replaceFirst(String.valueOf(params.get(matcher.group(1))));
						System.out.println("runText::" + runText);

					}
					// 直接调用XWPFRun的setText()方法设置文本时，在底层会重新创建一个XWPFRun，把文本附加在当前文本后面，
					// 所以我们不能直接设值，需要先删除当前run,然后再自己手动插入一个新的run。
					para.removeRun(i);
					para.insertNewRun(i).setText(runText);
				}
			}
		}
	}

	/**
	 * 正则匹配字符串
	 * 
	 * @param str
	 * @return
	 */
	private Matcher matcher(String str) {
		Pattern pattern = Pattern.compile("\\$\\{(.+?)\\}", Pattern.CASE_INSENSITIVE);
		Matcher matcher = pattern.matcher(str);
		return matcher;
	}
}

2.创建DocxToPdf类，写将XWPFDocument对象转成pdf文件的方法

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

import org.apache.poi.xwpf.converter.pdf.PdfConverter;
import org.apache.poi.xwpf.converter.pdf.PdfOptions;
import org.apache.poi.xwpf.usermodel.XWPFDocument;

public class DocxToPdf {
		public static void docxToPdf( XWPFDocument document,String outUrl ) throws Exception {
			 OutputStream outStream=getOutFileStream(outUrl);
			 PdfOptions options = PdfOptions.create();
			 PdfConverter.getInstance().convert(document, outStream, options);
		}
		
		protected static OutputStream getOutFileStream(String outputFilePath) throws IOException{
			File outFile = new File(outputFilePath);
			try{
				//Make all directories up to specified
				outFile.getParentFile().mkdirs();
			} catch (NullPointerException e){
				//Ignore error since it means not parent directories
			}
			outFile.createNewFile();
			FileOutputStream oStream = new FileOutputStream(outFile);
			return oStream;
		}

}

3.将docx文件转成PDF文件的方法

public static void main(String[] args) {
		Map params = new HashMap();
		params.put("id", "测试编号"  );
		params.put("jiaName", "甲方名称");
		params.put("jiaIDCard", "甲方id号");
		params.put("jarAddress", "甲方住宿");
		params.put("jarAddr", "甲方地址");

		params.put("yiName", "乙方名称");
		params.put("yiIDCard", "乙方id号");
		params.put("yiAddress", "乙方住宿地址");
		params.put("yiAddr", "乙方地址");
	
		XWPFDocument xWPFDocument= InputDocx.getInputDocx().valueInputWord(params, "E:\\jiekuanxieyi.docx");
		
		try {
			
			DocxToPdf.docxToPdf(xWPFDocument, "E:\\writejiekuanxieyi.pdf");
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	

4.需要的jar包