您所在位置：主题：[讨论]求教：SmartUpload 传值为空的问题
川上曰1
[专家分：0] 发布于 2009-07-09 20:33:00
各位，小弟在tomcat+netbean下，使用SmartUpload 来实现上传功能，因此form里面必须注明：
encType="multipart/form-data" ，可是这样的话，就会导致其他控件的值无法在页面之间通过request.getParameter()来传递，根据网上的说法，应该是直接使用SmartUpload 的方法getRequest().getParameter()来实现的，但是我明明是用了的，为什么取值还是为空呢？我的代码如下，请各位帮忙看下吧，谢谢了！
前台页面：
<%@page contentType="text/html" pageEncoding="gb2312" import="java.sql.*" import ="com.jspsmart.upload.*" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<jsp:useBean id="db" class="org.netbeans.Web.connectDB" />
<jsp:useBean id="nowtime" class="org.netbeans.Web.nowtime" />
<jsp:useBean id="mySmartUpload" scope = "session" class="com.jspsmart.upload.SmartUpload" />
<jsp:setProperty name="mySmartUpload" property="*" />
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>公告栏</title>
</head>
<body>
<form name="form1" method="post" encType="multipart/form-data" action="noticeadd2.jsp" >
<input type="hidden" name="isfirst" value="1">
<table border="1" width="400" cellspacing="1" cellpadding="4" align=center>
<tr>
<td height="25" colspan="2" bgcolor="#FFFFFF" ><div align="center">发布公告</div></td>
</tr>
<tr>
<td><font size="2">标题:</font></td>
<td><input type="text" name="noticetitle" value="" size="50" /></td>
</tr>
<tr>
<td><font size="2">内容:</font></td>
<td>
<textarea name="noticecontent" value ="" rows="15" cols="40">
</textarea>
</td>
</tr>
<tr>
<td><font size="2">上传附件:</font></td>
<td>
<input type="file" name="uploadfile" value="uploadfile" width="105" />
</td>
</tr>
<tr>
<td height="25" colspan="2" ><div align="center"><input type="submit" name="Submit" value="提交"></div></td>
</tr>
</table>
</form>
</body>
</html>
后台的测试页面：noticeadd2.jsp
<%@page contentType="text/html" pageEncoding="gb2312" import="java.sql.*" import ="com.jspsmart.upload.*" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<jsp:useBean id="db" class="org.netbeans.Web.connectDB" />
<jsp:useBean id="nowtime" class="org.netbeans.Web.nowtime" />
<jsp:useBean id="mySmartUpload" scope = "session" class="com.jspsmart.upload.SmartUpload" />
<%
//mySmartUpload.initialize(pageContext);
mySmartUpload.initialize(pageContext);
//mySmartUpload.getRequest().getParameter("isfirst");
String isfirst = mySmartUpload.getRequest().getParameter("isfirst");
if(isfirst == null)
{
out.print("+isfirst+");
isfirst= "";
out.print(""+isfirst+"");
}
%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312 ">
<title>test </title>
</head>
<body>
<h1>Hello World!</h1>
</body>
</html>
哎，每次都会进入if(isfirst == null)的那个循环哎，我彻底无语的，好几天了，都，请大家帮忙看看吧，谢谢了！
encType="multipart/form-data" ，可是这样的话，就会导致其他控件的值无法在页面之间通过request.getParameter()来传递，根据网上的说法，应该是直接使用SmartUpload 的方法getRequest().getParameter()来实现的，但是我明明是用了的，为什么取值还是为空呢？我的代码如下，请各位帮忙看下吧，谢谢了！
前台页面：
<%@page contentType="text/html" pageEncoding="gb2312" import="java.sql.*" import ="com.jspsmart.upload.*" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<jsp:useBean id="db" class="org.netbeans.Web.connectDB" />
<jsp:useBean id="nowtime" class="org.netbeans.Web.nowtime" />
<jsp:useBean id="mySmartUpload" scope = "session" class="com.jspsmart.upload.SmartUpload" />
<jsp:setProperty name="mySmartUpload" property="*" />
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>公告栏</title>
</head>
<body>
<form name="form1" method="post" encType="multipart/form-data" action="noticeadd2.jsp" >
<input type="hidden" name="isfirst" value="1">
<table border="1" width="400" cellspacing="1" cellpadding="4" align=center>
<tr>
<td height="25" colspan="2" bgcolor="#FFFFFF" ><div align="center">发布公告</div></td>
</tr>
<tr>
<td><font size="2">标题:</font></td>
<td><input type="text" name="noticetitle" value="" size="50" /></td>
</tr>
<tr>
<td><font size="2">内容:</font></td>
<td>
<textarea name="noticecontent" value ="" rows="15" cols="40">
</textarea>
</td>
</tr>
<tr>
<td><font size="2">上传附件:</font></td>
<td>
<input type="file" name="uploadfile" value="uploadfile" width="105" />
</td>
</tr>
<tr>
<td height="25" colspan="2" ><div align="center"><input type="submit" name="Submit" value="提交"></div></td>
</tr>
</table>
</form>
</body>
</html>
后台的测试页面：noticeadd2.jsp
<%@page contentType="text/html" pageEncoding="gb2312" import="java.sql.*" import ="com.jspsmart.upload.*" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<jsp:useBean id="db" class="org.netbeans.Web.connectDB" />
<jsp:useBean id="nowtime" class="org.netbeans.Web.nowtime" />
<jsp:useBean id="mySmartUpload" scope = "session" class="com.jspsmart.upload.SmartUpload" />
<%
//mySmartUpload.initialize(pageContext);
mySmartUpload.initialize(pageContext);
//mySmartUpload.getRequest().getParameter("isfirst");
String isfirst = mySmartUpload.getRequest().getParameter("isfirst");
if(isfirst == null)
{
out.print("+isfirst+");
isfirst= "";
out.print(""+isfirst+"");
}
%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312 ">
<title>test </title>
</head>
<body>
<h1>Hello World!</h1>
</body>
</html>
哎，每次都会进入if(isfirst == null)的那个循环哎，我彻底无语的，好几天了，都，请大家帮忙看看吧，谢谢了！