JavaでWord文書/テンプレートを開いて操作する方法は？

私はこの質問を投稿してから長い時間が経過していることを知っており、終了したら解決策を投稿すると述べました。だからここにあります。

いつか誰かのお役に立てば幸いです。これは完全なワーキングクラスであり、アプリケーションに配置し、.docxテンプレートを含むTEMPLATE_DIRECTORY_ROOTディレクトリをルートディレクトリに配置するだけです。

使い方はとても簡単です。.docxファイルにプレースホルダー（キー）を配置し、ファイル名と、そのファイルに対応するキーと値のペアを含むマップを渡します。

楽しい！

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.Closeable;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.URI;
import java.util.Deque;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.Map;
import java.util.UUID;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipOutputStream;

import javax.faces.context.ExternalContext;
import javax.faces.context.FacesContext;
import javax.servlet.http.HttpServletResponse;

public class DocxManipulator {

    private static final String MAIN_DOCUMENT_PATH = "word/document.xml";
    private static final String TEMPLATE_DIRECTORY_ROOT = "TEMPLATES_DIRECTORY/";


    /*    PUBLIC METHODS    */

    /**
     * Generates .docx document from given template and the substitution data
     * 
     * @param templateName
     *            Template data
     * @param substitutionData
     *            Hash map with the set of key-value pairs that represent
     *            substitution data
     * @return
     */
    public static Boolean generateAndSendDocx(String templateName, Map<String,String> substitutionData) {

        String templateLocation = TEMPLATE_DIRECTORY_ROOT + templateName;

        String userTempDir = UUID.randomUUID().toString();
        userTempDir = TEMPLATE_DIRECTORY_ROOT + userTempDir + "/";

        try {

            // Unzip .docx file
            unzip(new File(templateLocation), new File(userTempDir));       

            // Change data
            changeData(new File(userTempDir + MAIN_DOCUMENT_PATH), substitutionData);

            // Rezip .docx file
            zip(new File(userTempDir), new File(userTempDir + templateName));

            // Send HTTP response
            sendDOCXResponse(new File(userTempDir + templateName), templateName);

            // Clean temp data
            deleteTempData(new File(userTempDir));
        } 
        catch (IOException ioe) {
            System.out.println(ioe.getMessage());
            return false;
        }

        return true;
    }


    /*    PRIVATE METHODS    */

    /**
     * Unzipps specified ZIP file to specified directory
     * 
     * @param zipfile
     *            Source ZIP file
     * @param directory
     *            Destination directory
     * @throws IOException
     */
    private static void unzip(File zipfile, File directory) throws IOException {

        ZipFile zfile = new ZipFile(zipfile);
        Enumeration<? extends ZipEntry> entries = zfile.entries();

        while (entries.hasMoreElements()) {
          ZipEntry entry = entries.nextElement();
          File file = new File(directory, entry.getName());
          if (entry.isDirectory()) {
            file.mkdirs();
          } 
          else {
            file.getParentFile().mkdirs();
            InputStream in = zfile.getInputStream(entry);
            try {
              copy(in, file);
            } 
            finally {
              in.close();
            }
          }
        }
      }


    /**
     * Substitutes keys found in target file with corresponding data
     * 
     * @param targetFile
     *            Target file
     * @param substitutionData
     *            Map of key-value pairs of data
     * @throws IOException
     */
    @SuppressWarnings({ "unchecked", "rawtypes" })
    private static void changeData(File targetFile, Map<String,String> substitutionData) throws IOException{

        BufferedReader br = null;
        String docxTemplate = "";
        try {
            br = new BufferedReader(new InputStreamReader(new FileInputStream(targetFile), "UTF-8"));
            String temp;
            while( (temp = br.readLine()) != null)
                docxTemplate = docxTemplate + temp; 
            br.close();
            targetFile.delete();
        } 
        catch (IOException e) {
            br.close();
            throw e;
        }

        Iterator substitutionDataIterator = substitutionData.entrySet().iterator();
        while(substitutionDataIterator.hasNext()){
            Map.Entry<String,String> pair = (Map.Entry<String,String>)substitutionDataIterator.next();
            if(docxTemplate.contains(pair.getKey())){
                if(pair.getValue() != null)
                    docxTemplate = docxTemplate.replace(pair.getKey(), pair.getValue());
                else
                    docxTemplate = docxTemplate.replace(pair.getKey(), "NEDOSTAJE");
            }
        }

        FileOutputStream fos = null;
        try{
            fos = new FileOutputStream(targetFile);
            fos.write(docxTemplate.getBytes("UTF-8"));
            fos.close();
        }
        catch (IOException e) {
            fos.close();
            throw e;
        }
    }

    /**
     * Zipps specified directory and all its subdirectories
     * 
     * @param directory
     *            Specified directory
     * @param zipfile
     *            Output ZIP file name
     * @throws IOException
     */
    private static void zip(File directory, File zipfile) throws IOException {

        URI base = directory.toURI();
        Deque<File> queue = new LinkedList<File>();
        queue.push(directory);
        OutputStream out = new FileOutputStream(zipfile);
        Closeable res = out;

        try {
          ZipOutputStream zout = new ZipOutputStream(out);
          res = zout;
          while (!queue.isEmpty()) {
            directory = queue.pop();
            for (File kid : directory.listFiles()) {
              String name = base.relativize(kid.toURI()).getPath();
              if (kid.isDirectory()) {
                queue.push(kid);
                name = name.endsWith("/") ? name : name + "/";
                zout.putNextEntry(new ZipEntry(name));
              } 
              else {
                if(kid.getName().contains(".docx"))
                    continue;  
                zout.putNextEntry(new ZipEntry(name));
                copy(kid, zout);
                zout.closeEntry();
              }
            }
          }
        } 
        finally {
          res.close();
        }
      }

    /**
     * Sends HTTP Response containing .docx file to Client
     * 
     * @param generatedFile
     *            Path to generated .docx file
     * @param fileName
     *            File name of generated file that is being presented to user
     * @throws IOException
     */
    private static void sendDOCXResponse(File generatedFile, String fileName) throws IOException {

        FacesContext facesContext = FacesContext.getCurrentInstance();
        ExternalContext externalContext = facesContext.getExternalContext();
        HttpServletResponse response = (HttpServletResponse) externalContext
                .getResponse();

        BufferedInputStream input = null;
        BufferedOutputStream output = null;

        response.reset();
        response.setHeader("Content-Type", "application/msword");
        response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");
        response.setHeader("Content-Length",String.valueOf(generatedFile.length()));

        input = new BufferedInputStream(new FileInputStream(generatedFile), 10240);
        output = new BufferedOutputStream(response.getOutputStream(), 10240);

        byte[] buffer = new byte[10240];
        for (int length; (length = input.read(buffer)) > 0;) {
            output.write(buffer, 0, length);
        }

        output.flush();
        input.close();
        output.close();

        // Inform JSF not to proceed with rest of life cycle
        facesContext.responseComplete();
    }


    /**
     * Deletes directory and all its subdirectories
     * 
     * @param file
     *            Specified directory
     * @throws IOException
     */
    public static void deleteTempData(File file) throws IOException {

        if (file.isDirectory()) {

            // directory is empty, then delete it
            if (file.list().length == 0)
                file.delete();
            else {
                // list all the directory contents
                String files[] = file.list();

                for (String temp : files) {
                    // construct the file structure
                    File fileDelete = new File(file, temp);
                    // recursive delete
                    deleteTempData(fileDelete);
                }

                // check the directory again, if empty then delete it
                if (file.list().length == 0)
                    file.delete();
            }
        } else {
            // if file, then delete it
            file.delete();
        }
    }

    private static void copy(InputStream in, OutputStream out) throws IOException {

        byte[] buffer = new byte[1024];
        while (true) {
          int readCount = in.read(buffer);
          if (readCount < 0) {
            break;
          }
          out.write(buffer, 0, readCount);
        }
      }

      private static void copy(File file, OutputStream out) throws IOException {
        InputStream in = new FileInputStream(file);
        try {
          copy(in, out);
        } finally {
          in.close();
        }
      }

      private static void copy(InputStream in, File file) throws IOException {
        OutputStream out = new FileOutputStream(file);
        try {
          copy(in, out);
        } finally {
          out.close();
        }
     }

}