使用poi解析word文档实现网页预览（doc 或者docx）

/**
    * 打开一个新的页面并展示文件全部的内容
    * @param lid 
    */
   function openLaw(lid) {
   
           var content = getLawContent(lid);
           var win = window.open( 'about:blank','','scroll:1;status:0;help:0;resizable:1;dialogWidth:800px;dialogHeight:600px');
           win.document.write(content);
       }

   /**
    * 获取全部内容(html格式)
    * @param lid 
    * @returns {*} 返回html格式的doc文档字符串
    */
   function getLawContent(lid) {
   
       var result = null;
       $.ajax({
   
           type:'get',
           url:'${ctx}/law/laws/showContentByLid.action?lid=' + lid,
           async:false,
           success:function(data){
   
               if(data != null && data.length > 0){
   
                   result=data;
               }
           }
       });
       return result;
   }



public String showContentByLid() {
   
       StringBuilder content = new StringBuilder();
       String lid = request.getParameter("lid");
       if (StringUtils.isEmpty(lid)) {
   
           return null;
       }
       TCommonLaw law = lawService.queryOneLaw(lid);
       if (Objects.isNull(law)) {
   
           return null;
       }
       String aid = law.getAid();
       if (StringUtil.isEmpty(aid)) {
   
           return null;
       }
       JSONObject json = JSONObject.fromObject(aid);
       Set<String> idSet = json.keySet();
       String[] ids = idSet.toArray(new String[0]);
       IAttachment[] attachments = AttachmentsManager.getInstance().getAttachments(ids,null);
       for (IAttachment att : attachments) {
   
           File file = att.getFile()