Java中使用模板引擎+Word XML导出复杂Word的步骤

# beanutil使用的是hutool中的工具类 
map<string, object> datamap = beanutil.beantomap(report);

        try {
            // 1. 创建 freemarker 配置
            configuration cfg = new configuration(configuration.version_2_3_31);
            // 模板所在目录
            cfg.setdirectoryfortemplateloading(new file(templatedir));
            cfg.setdefaultencoding("utf-8");
            cfg.settemplateexceptionhandler(templateexceptionhandler.rethrow_handler);
            cfg.setlogtemplateexceptions(false);
            cfg.setwrapuncheckedexceptions(true);
            cfg.setfallbackonnullloopvariable(false);

            // 2. 加载模板（已按上述要求修改的 xml 文件）
            template template = cfg.gettemplate(templatepath);

            // 4. 渲染模板
            try (writer out = new bufferedwriter(new outputstreamwriter(
                    new fileoutputstream(templateoutputpath), standardcharsets.utf_8))) {
                template.process(datamap, out);
                response.setcontenttype("application/vnd.openxmlformats-officedocument.wordprocessingml.document");
                string filename = report.getunitname() + "年度自评报告.docx";
                string encodedfilename = urlencoder.encode(filename, standardcharsets.utf_8.tostring()).replace("+", "%20");
                response.setheader("content-disposition", "attachment; filename*=utf-8''" + encodedfilename);

# yaml配置
#yearselfevaluation:
#  # 模板目录
#  templatedir: g:\\templates
#  # 模板路径
#  templatepath: template\\word\\document.xml
#  # 输出路径
#  templateoutputpath: g:\\templates\\output2.xml
#  # 模板docx路径
#  templatedocxpath: g:\\templates\\template.docx

                xmltodocx.convert(templatedocxpath, templateoutputpath, response);
            }
        } catch (exception e) {
            log.error("渲染模板失败", e);
        }



# xmltodocx

import javax.servlet.http.httpservletresponse;
import java.io.*;
import java.nio.charset.standardcharsets;
import java.nio.file.files;
import java.nio.file.path;
import java.nio.file.paths;
import java.util.zip.zipentry;
import java.util.zip.zipinputstream;
import java.util.zip.zipoutputstream;

public class xmltodocx {

    /**
     * 将渲染后的 word 2003 xml 文件内容替换到 docx 模板中，并将生成的 docx 写入 httpservletresponse 输出流
     * @param docxtemplate    原始的 docx 模板路径（由 xml 另存得来）
     * @param renderedxmlpath 渲染后的 xml 文件路径
     * @param response        httpservletresponse 对象，用于输出 docx
     */
    public static void convert(string docxtemplate, string renderedxmlpath, httpservletresponse response) throws ioexception {
        // 读取渲染后的 xml 文件内容（java 8 兼容）
        path xmlpath = paths.get(renderedxmlpath);
        byte[] xmlbytes = files.readallbytes(xmlpath);
        string renderedxml = new string(xmlbytes, standardcharsets.utf_8);

        // 创建临时目录存放解压后的文件
        path tempdir = files.createtempdirectory("docx");
        try (zipinputstream zis = new zipinputstream(new fileinputstream(docxtemplate))) {
            zipentry entry;
            while ((entry = zis.getnextentry()) != null) {
                file outfile = new file(tempdir.tofile(), entry.getname());
                if (entry.isdirectory()) {
                    outfile.mkdirs();
                } else {
                    outfile.getparentfile().mkdirs();
                    try (fileoutputstream fos = new fileoutputstream(outfile)) {
                        byte[] buffer = new byte[8192];
                        int len;
                        while ((len = zis.read(buffer)) != -1) {
                            fos.write(buffer, 0, len);
                        }
                    }
                }
                zis.closeentry();
            }
        }

        // 替换 document.xml
        path docxmlpath = tempdir.resolve("word/document.xml");
        files.write(docxmlpath, renderedxml.getbytes(standardcharsets.utf_8));

        // 重新打包为 docx 并直接写入 response 输出流
        try (zipoutputstream zos = new zipoutputstream(response.getoutputstream())) {
            files.walk(tempdir).foreach(path -> {
                if (files.isregularfile(path)) {
                    string entryname = tempdir.relativize(path).tostring().replace('\\', '/');
                    try {
                        zos.putnextentry(new zipentry(entryname));
                        files.copy(path, zos);
                        zos.closeentry();
                    } catch (ioexception e) {
                        throw new uncheckedioexception(e);
                    }
                }
            });
            zos.finish(); // 确保 zip 文件正确结束
        } finally {
            // 清理临时目录
            files.walk(tempdir)
                    .map(path::tofile)
                    .foreach(file::delete);
        }
    }

    /**
     * 将渲染后的 word 2003 xml 文件内容替换到 docx 模板中，生成最终的 docx 文件
     * @param docxtemplate    原始的 docx 模板路径（由 xml 另存得来）
     * @param renderedxmlpath 渲染后的 xml 文件路径
     * @param outputdocx      输出 docx 文件路径
     */
    public static void convert(string docxtemplate, string renderedxmlpath, string outputdocx) throws ioexception {
        // 读取渲染后的 xml 文件内容（java 8 兼容）
        path xmlpath = paths.get(renderedxmlpath);
        byte[] xmlbytes = files.readallbytes(xmlpath);
        string renderedxml = new string(xmlbytes, standardcharsets.utf_8);

        // 创建临时目录存放解压后的文件
        path tempdir = files.createtempdirectory("docx");
        try (zipinputstream zis = new zipinputstream(new fileinputstream(docxtemplate))) {
            zipentry entry;
            while ((entry = zis.getnextentry()) != null) {
                file outfile = new file(tempdir.tofile(), entry.getname());
                if (entry.isdirectory()) {
                    outfile.mkdirs();
                } else {
                    outfile.getparentfile().mkdirs();
                    try (fileoutputstream fos = new fileoutputstream(outfile)) {
                        byte[] buffer = new byte[8192];
                        int len;
                        while ((len = zis.read(buffer)) != -1) {
                            fos.write(buffer, 0, len);
                        }
                    }
                }
                zis.closeentry();
            }
        }

        // 替换 document.xml
        path docxmlpath = tempdir.resolve("word/document.xml");
        files.write(docxmlpath, renderedxml.getbytes(standardcharsets.utf_8));

        // 重新打包为 docx
        try (zipoutputstream zos = new zipoutputstream(new fileoutputstream(outputdocx))) {
            files.walk(tempdir).foreach(path -> {
                if (files.isregularfile(path)) {
                    string entryname = tempdir.relativize(path).tostring().replace('\\', '/');
                    try {
                        zos.putnextentry(new zipentry(entryname));
                        files.copy(path, zos);
                        zos.closeentry();
                    } catch (ioexception e) {
                        throw new uncheckedioexception(e);
                    }
                }
            });
        } finally {
            // 清理临时目录
            files.walk(tempdir)
                 .map(path::tofile)
                 .foreach(file::delete);
        }
    }

    public static void main(string[] args) throws ioexception {
        convert("g:\\templates\\template.docx", "g:\\templates\\output2.xml", "f:\\test2.docx");
        system.out.println("docx 文件已生成, haha ");
    }
}