在 jsp 中提交 form 表单到action ; 无刷新上传; 注意和servlet 上传区别;

来源：互联网发布：nagios 监控windows 编辑：程序博客网时间：2024/05/16 15:38

action 中; 返回值是null;------------------
     public String addEmployee() {

       Employee e = new Employee();
       e.setAge(age);
       e.setBirthday(birthday);
       e.setEmail(email);
       e.setEmployeeNumber(employeeNumber);
       e.setName(name);

       if (orgid != null) {
           Organise org;
           try {
               org = (Organise) this.organiseService.findById(orgid);
               e.setOrganise(org);
           } catch (Exception e1) {
               // TODO Auto-generated catch block
               e1.printStackTrace();
           }

       }
       e.setPassword(password);
       e.setRole(role);
       e.setSex(sex);
       e.setTelphone(telphone);

           this.employeeService.save(e);

               ServletActionContext.getResponse().getWriter().print("<script>window.parent.uploadSuccess('success');</script>");
               //getWriter().write("<script>window.parent.afterSumbmit(' not ok')</script>");

           ServletActionContext.getResponse().getWriter().print("<script>window.parent.uploadSuccess('not ok');</script>");

       return null; / / 返回值是null;
   }

//---------------------------------------------------jsp 页面

<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
    <base href="<%=basePath%>">

    <title>My JSP 'test.jsp' starting page</title>

   <meta http-equiv="pragma" content="no-cache">
   <meta http-equiv="cache-control" content="no-cache">
   <meta http-equiv="expires" content="0">
   <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
   <meta http-equiv="description" content="This is my page">
   

   <script type="text/javascript">

   function testsub(){
       document.getElementById('myform').submit();
       }


       function uploadSuccess(msg){

           alert(msg);

       }
       </script>

</head>

<body>
   <iframe style="display: none" name="hiddenifr"></iframe>        // ifram e 可以再form 里面或者外面都可以;;似乎没什么影响;
    <form action="addEmployeeAction.action" method='post'
                                       target='hiddenifr' id="myform">


                                       <input name='employeeNumber' value='employeeNum'>

                                       <input type ='button' onclick="testsub()">
   </form>
</body>
</html>