freemarker下载word文档功能的实现以及注意点

 public Object createWord() {        String netPath = "";        String fileFullPath = null;        //Configuration实例化        Configuration configuration = new Configuration();        configuration.setDefaultEncoding("UTF-8");        Map<String, Object> dataMap = new HashMap<String, Object>();        getData(dataMap);        configuration.setClassForTemplateLoading(this.getClass(), "/cn/com/liandisys/policy/common/util/template");//模板文件所在路径        Template t = null;        try {            t = configuration.getTemplate("Report.ftl"); //获取模板文件        } catch (IOException e) {            e.printStackTrace();        }        //导出文件        long timeSpan = new Date().getTime();        String fileName = timeSpan + ".doc";        fileFullPath = this.getFileGeneratePath() + FILESEPARATOR + fileName;        File file = new File(fileFullPath);        Writer out = null;        try {            try {                netPath = commonService.exportWordFile();            } catch (Exception e) {                e.printStackTrace();                netPath = "{\"path\":\"\"}";            }            out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file), "UTF-8"));        } catch (FileNotFoundException e1) {            e1.printStackTrace();        } catch (UnsupportedEncodingException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }        try {            t.process(dataMap, out); //将填充数据填入模板文件并输出到目标文件         } catch (TemplateException e) {            e.printStackTrace();        } catch (IOException e) {            e.printStackTrace();        }        return "{\"path\":\"" + netPath + "\"}";    }

private static final String FILETYPE_WORDSUFFIX = ".doc";

//传递参数private void getData(Map<String, Object> dataMap) {            String param1 = " 参数一 ";            String param2 = " 参数二 ";            ...  参数有几个就创建几个             dataMap.put("param1", param1);            dataMap.put("param2", param2);            ...  参数有几个就添加几个            List<Map<String,Object>> list = new ArrayList<Map<String,Object>>();            for (int i = 0; i < list.size(); i++) {                 Map<String,Object> map = new HashMap<String,Object>();                    map.put("number", i);                                         map.put("content", "内容"+i);                 list.add(map);            dataMap.put("list", list);            }    }

 private static final String FILESEPARATOR = System.getProperty("file.separator");

//导出word    public String exportWordFile() {        String netPath = "";        String fileFullPath = null;        long timeSpan = new Date().getTime();        String fileName = timeSpan + FILETYPE_WORDSUFFIX;        fileFullPath = this.getFileGeneratePath() + FILESEPARATOR + fileName;        ServletContext ctx = ContextLoader.getCurrentWebApplicationContext().getServletContext();        netPath = ctx.getContextPath() + "/fileDownload.do?name=" + timeSpan + "&suffix=" + FILETYPE_WORDSUFFIX;        File file = new File(fileFullPath);        file.getParentFile().mkdirs();        try {        } catch (Exception e) {            logger.error(e.getMessage(), e);        } finally {        }        return netPath;    }