如何通过java将doc文件转换为docx文件详解

import com.jacob.activeX.ActiveXComponent;
import com.jacob.com.Dispatch;
import com.jacob.com.Variant;

import java.io.File;
import java.util.concurrent.TimeUnit;

public class DocToDocxConverter {

    public static void main(String[] args) {
        String inputFilePath = "C:\\path\\to\\input.doc";
        String outputFilePath = "C:\\path\\to\\output.docx";

        try {
            // 创建Word Application对象
            ActiveXComponent wordApp = new ActiveXComponent("Word.Application");

            // 设置Word为可见（可选，调试时便于观察）
            wordApp.setProperty("Visible", new Variant(false));

            // 打开源.doc文件
            Dispatch documents = wordApp.getProperty("Documents").toDispatch();
            Dispatch document = Dispatch.call(documents, "Open", inputFilePath, false, true).toDispatch();

            // 保存为.docx格式
            Dispatch.call(document, "SaveAs", outputFilePath, 12, false); // 12表示wdFormatXMLDocument (Word 2007/2010/2013 XML Document)

            // 关闭打开的文档
            Dispatch.call(document, "Close", false);

            // 退出Word Application
            wordApp.invoke("Quit", new Variant[]{});

            System.out.println("Conversion from .doc to .docx successful.");
        } catch (Exception e) {
            System.err.println("An error occurred during conversion:");
            e.printStackTrace();
        }
    }
}

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;

public class DocToDocxConverter {

    private static final String LIBREOFFICE_PATH = "C:\\Program Files\\LibreOffice\\program\\soffice.exe"; // Windows示例路径，根据实际情况调整
    private static final String INPUT_FILE_PATH = "C:\\path\\to\\input.doc";
    private static final String OUTPUT_FILE_PATH = "C:\\path\\to\\output.docx";

    public static void main(String[] args) {
        Path inputFile = Paths.get(INPUT_FILE_PATH);
        Path outputFile = Paths.get(OUTPUT_FILE_PATH);

        try {
            // 确保输入文件存在
            if (!Files.exists(inputFile)) {
                System.err.println("Input file not found: " + inputFile);
                return;
            }

            // 执行LibreOffice转换命令
            ProcessBuilder pb = new ProcessBuilder(LIBREOFFICE_PATH, "--headless", "--convert-to", "docx", "--outdir", outputFile.getParent().toString(), inputFile.toString());
            Process process = pb.start();

            // 等待转换完成
            int exitCode = process.waitFor();
            if (exitCode != 0) {
                System.err.println("LibreOffice conversion failed with exit code: " + exitCode);
            } else {
                System.out.println("Conversion from .doc to .docx successful.");
            }
        } catch (IOException | InterruptedException e) {
            System.err.println("An error occurred during conversion:");
            e.printStackTrace();
        }
    }
}