用java语言实现word导出文档服务

一· 需要制作一个需要导出的word文档模板（使用wps导出xml（2003））然后将文件后缀名给为ftl----------------将文件xx.ftl放在后台代码的静态资源目录下（也就是template下）

将其正你所需要填写字段通过${字段名}代替

二·进行java代码的开发

@RestController
@AllArgsConstructor
@RequestMapping("/word")
public class WordExportController {
   private IWordExportService iWordExportService;

   /**
    * 获取文档数据
    *
    * @param request  请求参数
    * @param response 响应
    */
   @PostMapping("detail")
你所需填入的数据对象通过request参数传入
   public void wordExport(HttpServletRequest request, HttpServletResponse response) {
      Map<String, Object> dataMap = new HashMap<>(20);
      iWordExportService.getData(dataMap, request);
      String dir = System.getProperty("user.dir");
      String annualReportPath = dir + File.separator + "blade-service" + File.separator + "blade-word-export" + File.separator + "src" + File.separator + "main" + File.separator + "resources" + File.separator + "template";
      File path = new File(annualReportPath);
      if (!path.exists()) {
         annualReportPath = dir + File.separator + "template";
      }
      String templateFile = annualReportPath + "\xx.ftl";
      String exportFile = annualReportPath + "\xx.doc";
      try {
         iWordExportService.getInstance().createDocFile(templateFile, dataMap, exportFile, 1);
         iWordExportService.downloadFile(exportFile, "xx.doc", request, response);
      } catch (Exception e) {
         e.printStackTrace();
      }
   }


}

//Service接口

public interface IWordExportService {
   /**
    * 导出文档
    *
    * @param templateFilePath 模板文件路径
    * @param dataMap          数据
    * @param exportFilePath   下载文件路径
    * @param loadType         文件加载模式
    * @return file
    * @throws Exception 异常信息
    */
   File createDocFile(String templateFilePath, Map<String, Object> dataMap, String exportFilePath, int loadType) throws Exception;

   /**
    * 文件下载
    *
    * @param resourcepath 资源路径
    * @param filename     文件名
    * @param request      请求地址
    * @param response     请求地址
    */
   void downloadFile(String resourcepath, String filename, HttpServletRequest request, HttpServletResponse response);

   /**
    * 设置文档数据
    *
    * @param dataMap 数据
    */
   void getData(Map<String, Object> dataMap, HttpServletRequest request);

   /**
    * sdfsd
    *
    * @return file
    */
   IWisdomWordExportService getInstance();
}
//ServiceImpl实现类

@Service
public class IWordExportServiceImpl implements IWordExportService {
   private static Logger LOGGER = LoggerFactory.getLogger(WordExportApplication.class);
   private static String diagonal = "\";
   private static String http = "http";
   private static IWordExportServiceImpl service = null;
   private static Log log = LogFactory.getLog(WordExportApplication.class);

   private IWordExportServiceImpl() {
      super();
   }

   @Override
   public IWordExportServiceImpl getInstance() {
      if (service == null) {
         synchronized (WordExportApplication.class) {
            if (service == null) {
               service = new IWordExportServiceImpl();
            }
         }
      }
      return service;
   }

   @Override
   public File createDocFile(String templateFilePath, Map<String, Object> dataMap, String exportFilePath, int loadType) throws Exception {
      Template t;
      Configuration configuration = new Configuration(Configuration.VERSION_2_3_28);
      configuration.setDefaultEncoding("UTF-8");
      try {
         templateFilePath = pathReplace(templateFilePath);
         String ftlPath = templateFilePath.substring(0, templateFilePath.lastIndexOf("/"));
         if (loadType == 1) {
            // FTL文件所存在的位置
            configuration.setDirectoryForTemplateLoading(new File(ftlPath));
         } else {
            //以类加载的方式查找模版文件路径
            configuration.setClassForTemplateLoading(this.getClass(), ftlPath);
         }


         String ftlFile = templateFilePath.substring(templateFilePath.lastIndexOf("/") + 1);
         // 模板文件名
         t = configuration.getTemplate(ftlFile);

         File outFile = new File(exportFilePath);
         Writer out;

         out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(outFile)));

         t.process(dataMap, out);
      } catch (Exception e) {
         LOGGER.error("导出word文档出错", e);
         throw e;
      }

      return null;
   }

   @Override
   public void downloadFile(String resourcepath, String filename, HttpServletRequest request, HttpServletResponse response) {
      FileInputStream fis = null;
      OutputStream out = null;
      if (StringUtil.isNotEmpty(filename) && StringUtil.isNotEmpty(resourcepath)) {
         try {
            filename = new String(filename.getBytes(StandardCharsets.UTF_8), "ISO8859-1");
            String realPath = request.getSession().getServletContext().getRealPath("/WEB-INF");
            realPath = realPath.replace("\hrm\WEB-INF", "");
            realPath.trim();
            fis = new FileInputStream(new File(resourcepath));
            //设置响应头和保存文件名
            response.setContentType("application/x-download");
            response.addHeader("Content-Disposition", "attachment;filename=" + filename);
            //写出流信息
            int b;
            out = response.getOutputStream();
            byte[] buf = new byte[1024];
            while (-1 != (b = fis.read(buf))) {
               out.write(buf, 0, b);
            }
         } catch (Exception e) {
            e.printStackTrace();
         } finally {
            try {
               fis.close();
               out.close();
            } catch (IOException e) {
               e.printStackTrace();
            }
         }
      }
   }


   /**
    * 把路径的替换成/
    *
    * @param path 替换前路径
    * @return 替换后路径
    */
   private String pathReplace(String path) {
      while (path != null && path.contains(diagonal)) {
         path = path.replace("\", "/");
      }
      return path;
   }

   /**
    * 测试用的
    *
    * @param dataMap 数据
    */
   @Override
   public void getData(Map<String, Object> dataMap, HttpServletRequest request) {
      System.out.println(request.getParameter("area1"));
      dataMap.put("titleName", request.getParameter("titleName") == null ? "xx" : request.getParameter("titleName"));
      dataMap.put("area", request.getParameter("area") == null ? "0" : request.getParameter("area"));
      dataMap.put("number1", request.getParameter("number1") == null ? "1" : request.getParameter("number1"));
      dataMap.put("index1", request.getParameter("index1") == null ? "无" : request.getParameter("index1"));
      dataMap.put("amount1", request.getParameter("amount1") == null ? "0" : request.getParameter("amount1"));
      dataMap.put("area1", request.getParameter("area1") == null ? "0" : request.getParameter("area1"));
      dataMap.put("percentage1", request.getParameter("percentage1") == null ? "0.00%" : request.getParameter("percentage1"));
      dataMap.put("number2", request.getParameter("number2") == null ? "1" : request.getParameter("number2"));
      dataMap.put("index2", request.getParameter("index2") == null ? "无" : request.getParameter("number2"));
      dataMap.put("amount2", request.getParameter("amount2") == null ? "0" : request.getParameter("amount2"));
      dataMap.put("area2", request.getParameter("area2") == null ? "0" : request.getParameter("area2"));
      dataMap.put("percentage2", request.getParameter("percentage2") == null ? "0.00%" : request.getParameter("percentage3"));
      dataMap.put("number3", request.getParameter("number3") == null ? "1" : request.getParameter("number3"));
      dataMap.put("index3", request.getParameter("index3") == null ? "无" : request.getParameter("number3"));
      dataMap.put("amount3", request.getParameter("amount3") == null ? "0" : request.getParameter("amount3"));
      dataMap.put("area3", request.getParameter("area3") == null ? "0" : request.getParameter("area3"));
      dataMap.put("percentage3", request.getParameter("percentage3") == null ? "0.00%" : request.getParameter("percentage3"));
      dataMap.put("number4", request.getParameter("number4") == null ? "1" : request.getParameter("number4"));
      dataMap.put("index4", request.getParameter("index4") == null ? "无" : request.getParameter("number4"));
      dataMap.put("amount4", request.getParameter("amount4") == null ? "0" : request.getParameter("amount4"));
      dataMap.put("area4", request.getParameter("area4") == null ? "0" : request.getParameter("area4"));
      dataMap.put("percentage4", request.getParameter("percentage4") == null ? "0.00%" : request.getParameter("percentage4"));
      dataMap.put("number5", request.getParameter("number5") == null ? "1" : request.getParameter("number5"));
      dataMap.put("index5", request.getParameter("index5") == null ? "无" : request.getParameter("number5"));
      dataMap.put("amount5", request.getParameter("amount5") == null ? "0" : request.getParameter("amount5"));
      dataMap.put("area5", request.getParameter("area5") == null ? "0" : request.getParameter("area5"));
      dataMap.put("percentage5", request.getParameter("percentage5") == null ? "0.00%" : request.getParameter("percentage5"));
      dataMap.put("number6", request.getParameter("number6") == null ? "1" : request.getParameter("number6"));
      dataMap.put("index6", request.getParameter("index6") == null ? "无" : request.getParameter("number6"));
      dataMap.put("amount6", request.getParameter("amount6") == null ? "0" : request.getParameter("amount6"));
      dataMap.put("area6", request.getParameter("area6") == null ? "0" : request.getParameter("area6"));
      dataMap.put("percentage6", request.getParameter("percentage6") == null ? "0.00%" : request.getParameter("percentage6"));
      dataMap.put("number7", request.getParameter("number7") == null ? "1" : request.getParameter("number7"));
      dataMap.put("index7", request.getParameter("index7") == null ? "无" : request.getParameter("number7"));
      dataMap.put("amount7", request.getParameter("amount7") == null ? "0" : request.getParameter("amount7"));
      dataMap.put("area7", request.getParameter("area7") == null ? "0" : request.getParameter("area7"));
      dataMap.put("percentage7", request.getParameter("percentage7") == null ? "0.00%" : request.getParameter("percentage7"));

   }

   private String getImageStr(String imgFile) {

      InputStream in;
      byte[] data = null;
      try {
         //获取在线图片
         if (imgFile.startsWith(http)) {
            URL url = new URL(imgFile);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("GET");
            conn.setConnectTimeout(5 * 1000);
            in = conn.getInputStream();
         } else {      //获取线下图片
            in = new FileInputStream(imgFile);
         }
         int c;
         ByteArrayOutputStream buff = new ByteArrayOutputStream();
         while ((c = in.read()) >= 0) {
            buff.write(c);
         }
         data = buff.toByteArray();
         buff.close();
         in.read(data);
         in.close();
      } catch (FileNotFoundException e) {
         e.printStackTrace();
      } catch (IOException e) {
         e.printStackTrace();
      }
      BASE64Encoder encoder = new BASE64Encoder();
      if (data != null && data.length > 0) {
         return encoder.encode(data);
      }
      return null;
   }
}