private String profile;

public String generateContractString(String afterTreatment, String projectId, String builderName) {
        try {
            //导出地址
            int year = Calendar.getInstance().get(Calendar.YEAR);
            int month = Calendar.getInstance().get(Calendar.MONTH) + 1;
            int day = Calendar.getInstance().get(Calendar.DATE);
            String yearStr = String.valueOf(year);
            String monthStr = String.valueOf(month);
            String dayStr = String.valueOf(day);
            String head = profile;
            String filePath = projectId + "/contract";
            String dirPrefix =
                    filePath + "/fileupload/" + yearStr + File.separator + monthStr + File.separator + dayStr + "/";
            // 文件夹地址
            File path = new File(head + dirPrefix);
            if (!path.exists()) {
                path.mkdirs();
            }
            String name = IdUtil.simpleUUID() + builderName + ".html";
            String docName = IdUtil.simpleUUID() + builderName + ".docx";
            FileUtil.touch(head + dirPrefix + name);
            boolean blg = false;
            try {
                BufferedWriter bw = new BufferedWriter(new FileWriter(head + dirPrefix + name));
                String a = "" + afterTreatment;
                byte[] b = (a).getBytes();
                bw.write(afterTreatment);
                bw.close();
                Document doc = new Document();
                doc.loadFromFile(head + dirPrefix + name, FileFormat.Html, 			 XHTMLValidationType.None);
                //保存为Word格式到指定路径
                doc.saveToFile(head + dirPrefix + docName, FileFormat.Docx_2013);
            } catch (IOException e) {
                e.printStackTrace();
            }
            return dirPrefix + docName;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

大体思路是依靠e-iceblue来实现转化，先将富文本的内容存入到html中，再通过e-iceblue将html转化为word，并保留原本的格式
所需依赖

	        <repository>
            <id>com.e-iceblue</id>
            <name>e-iceblue</name>
            <url>https://repo.e-iceblue.cn/repository/maven-public/</url>
        </repository>

        <dependency>
            <groupId>e-iceblue</groupId>
            <artifactId>spire.doc.free</artifactId>
            <version>5.2.0</version>
        </dependency>