用jeecg做个项目第三讲(自定义导入导出)

1.导入

前端js和跳转页面

 <t:dgToolBar title="导入单一模板" icon="icon-put"    funname="Importonlyone"></t:dgToolBar>

function Importonlyone(title,url,gname) {
    gridname=gname;
    var ids = [];
    var rows = $("#"+gname).datagrid('getSelections'); 
   　if(rows.length==1){
        openuploadwin('Excel导入', 'decMainController.do?upload&num=1&ids='+rows[0].id, "decMainList");
    } 

}

<t:formvalid formid="formobj" layout="div" dialog="true" beforeSubmit="upload">
    <fieldset class="step">
    <div class="form"><t:upload name="fiels" buttonText="选择要导入的文件" uploader="${controller_name}.do?${empty method_name?'importExcel':method_name }" extend="*.xls;*.xlsx" id="file_upload" formData="documentTitle"></t:upload></div>
    <div class="form" id="filediv" style="height: 50px"></div>
    </fieldset>
</t:formvalid>

后台跳转方法及导入解析

　　　　　@RequestMapping(params = "upload")
         public ModelAndView upload(HttpServletRequest req) {
          　 req.setAttribute("controller_name","decMainController"); 
             req.setAttribute("method_name","importonlyone");
             req.setAttribute("ids", req.getParameter("ids"));  　　　　　　  return new ModelAndView("com/jeecg/decmain/pub_excel_upload"); 
         }

 　　　　　　    @SuppressWarnings("unchecked")
               @RequestMapping(params = "importonlyone", method = RequestMethod.POST)
               @ResponseBody
               public AjaxJson importonlyone(HttpServletRequest request, HttpServletResponse response) throws Exception {
                   AjaxJson j = new AjaxJson(); 
                    MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
                    List<MultipartFile> contactFile= new ArrayList<MultipartFile>();
                    Map<String, MultipartFile> fileMap = multipartRequest.getFileMap();
                    for (Map.Entry<String, MultipartFile> entity : fileMap.entrySet()) {
                        MultipartFile file = entity.getValue();// 获取上传文件对象
                    　　 contactFile.add(file);
                　　} 
                    XSSFWorkbook wb;//2007以前的是HSSFWorkbook
                    // 页
                    XSSFSheet sheet;//成品表
                    // 行
                    XSSFRow row;//成品表行
                    // 打开文件
                    try {
                          wb = new XSSFWorkbook(contactFile.get(0).getInputStream());
                    } catch (IOException e) {
                        e.printStackTrace();
                        wb = new XSSFWorkbook();
                    }
                    sheet = wb.getSheetAt(0);
                    int rowNum = sheet.getLastRowNum();
                    DecMainPage decMainPage=new DecMainPage();
                    row=sheet.getRow(1);
                    String ieflag=getCellFormatValue(row.getCell(1));//进出口标识
　　　　　　　　　　}