java实现多个docx文档合并（基于docx4j）

package com.kk.test; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import org.apache.commons.io.IOUtils; import org.docx4j.jaxb.Context; import org.docx4j.openpackaging.exceptions.Docx4JException; import org.docx4j.openpackaging.packages.WordprocessingMLPackage; import org.docx4j.openpackaging.parts.PartName; import org.docx4j.openpackaging.parts.WordprocessingML.AlternativeFormatInputPart; import org.docx4j.openpackaging.parts.WordprocessingML.MainDocumentPart; import org.docx4j.relationships.Relationship; import org.docx4j.wml.CTAltChunk; public class MargeDoc { public void mergeDocx(List<String> list, String path) { List<InputStream> inList = new ArrayList<InputStream>(); for (int i = 0; i < list.size(); i++) try { inList.add(new FileInputStream(list.get(i))); } catch (FileNotFoundException e) { e.printStackTrace(); } try { InputStream inputStream = mergeDocx(inList); saveTemplate(inputStream, path); } catch (Docx4JException | IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } public InputStream mergeDocx(final List<InputStream> streams) throws Docx4JException, IOException { WordprocessingMLPackage target = null; final File generated = File.createTempFile("generated", ".docx"); int chunkId = 0; Iterator<InputStream> it = streams.iterator(); while (it.hasNext()) { InputStream is = it.next(); if (is != null) { if (target == null) { // Copy first (master) document OutputStream os = new FileOutputStream(generated); os.write(IOUtils.toByteArray(is)); os.close(); target = WordprocessingMLPackage.load(generated); } else { // Attach the others (Alternative input parts) insertDocx(target.getMainDocumentPart(), IOUtils.toByteArray(is), chunkId++); } } } if (target != null) { target.save(generated); return new FileInputStream(generated); } else { return null; } } // 插入文档 private void insertDocx(MainDocumentPart main, byte[] bytes, int chunkId) { try { AlternativeFormatInputPart afiPart = new AlternativeFormatInputPart( new PartName("/part" + chunkId + ".docx")); // afiPart.setContentType(new ContentType(CONTENT_TYPE)); afiPart.setBinaryData(bytes); Relationship altChunkRel = main.addTargetPart(afiPart); CTAltChunk chunk = Context.getWmlObjectFactory().createCTAltChunk(); chunk.setId(altChunkRel.getId()); main.addObject(chunk); } catch (Exception e) { e.printStackTrace(); } } public void saveTemplate(InputStream fis, String toDocPath) { FileOutputStream fos; int bytesum = 0; int byteread = 0; try { fos = new FileOutputStream(toDocPath); byte[] buffer = new byte[1444]; while ((byteread = fis.read(buffer)) != -1) { bytesum += byteread; // 字节数 文件大小 fos.write(buffer, 0, byteread); } fis.close(); fos.close(); } catch (FileNotFoundException e1) { e1.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } public static void main(String[] args) throws Docx4JException, IOException{ MargeDoc wordUtil=new MargeDoc(); String template="D:/docs"; List<String> list=new ArrayList<String>(); list.add(template+"/1.docx"); list.add(template+"/2.docx"); list.add(template+"/12.docx"); list.add(template+"/22.docx"); wordUtil.mergeDocx(list, template+"/out.docx"); } }