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先写个简单的jsp测试你的代码有没有问题.
我发出来了,.html简单的可以,.jsp简单的应该也可以吧
可代码多了为什么不行呢??
<%@ page language="java" contentType="text/html; charset=gb2312"
pageEncoding="gb2312"%>
<%@ page import="java.sql.*"%>
<%@ page import="java.io.*"%>
<%@ page import="java.util.*"%>
<%@ page import="java.lang.*"%>
<html>
<head>
<title>修改教职工信息</title>
<jsp:useBean id="user" class="bean.query" scope="page">
</jsp:useBean>
<%
String user_id = request.getParameter("id");
String sql = "select * from user_info where user_id='" + user_id
+ "'";
ResultSet rs = user.getconnection(sql);
rs.next();
%>
<jsp:include page="date.js">
</jsp:include>
<script type="text/javascript"> function load()
{
var j;

var xi=document.all.form1.user_xi.length;
for(j=0;j <xi;j++)
{
if(document.all.form1.user_xi.options[j].value==' <%=rs.getString("user_xi")%>')
{
document.all.form1.user_xi.options.selectedIndex=j;break;
}
}

var role=document.all.form1.user_role.length;
for(j=0;j <role;j++)
{
if(document.all.form1.user_role.options[j].value==' <%=rs.getString("user_role")%>')
{
document.all.form1.user_role.options.selectedIndex=j;break;
}
}

var zhicheng=document.all.form1.user_zhicheng.length;
for(j=0;j <zhicheng;j++)
{
if(document.all.form1.user_zhicheng.options[j].value==' <%=rs.getString("user_zhicheng")%>')
{
document.all.form1.user_zhicheng.options.selectedIndex=j;break;
}

}

var zhuangtai=document.all.form1.user_zhuangtai.length;
for(j=0;j <zhuangtai;j++)
{
if(document.all.form1.user_zhuangtai.options[j].value==' <%=rs.getString("user_zhuangtai")%>')
{
document.all.form1.user_zhuangtai.options[j].selected=true;
break;
}
}

var shuodao=document.all.form1.user_shuodao.length;
for(j=0;j <shuodao;j++)
{
if(document.all.form1.user_shuodao.options[j].value==' <%=rs.getString("user_shuodao")%>')
{
document.all.form1.user_shuodao.options[j].selected=true;
break;
}
}
}

function yulan()
{
if(document.all.form1.user_photo.value)
{
document.all.form1.viewpic.src=document.all.form1.user_photo.value;
document.all.form1.viewpic.style.display="";
document.all.form1.viewpic.border=1;
}
}

</script>
</head>
<body onLoad="load()">
<form action="tj_xggeren.jsp" method="post" name="form1" id="form1">
<table width="677" border="0" align="center">
<tr>
<td height="34" colspan="2" align="center" background="img/23.bmp">
<h2>
<span class="STYLE3">教师个人信息修改 </span>
</h2>
</td>
</tr>
<tr>
<td>
工号：
</td>
<td>
<%=rs.getString("user_id")%>
<input type="hidden" name="user_id"
value=" <%=rs.getString("user_id")%>">
</td>
</tr>
<tr>
<td>
姓名：
</td>
<td>
<input type="text" name="user_name_CN"
value=" <%=rs.getString("user_name_CN")%>" />
</td>
</tr>
<tr>
<td>
姓名拼音缩写：
</td>
<td>
<input type="text" name="user_name_EN"
value=" <%=rs.getString("user_name_EN")%>" />
</td>
</tr>
<tr>
<td>
性别：
</td>
<td>
<input type="text" name="user_sex"
value=" <%=rs.getString("user_sex")%>" />
</td>
</tr>
<tr>
<td>
电子邮箱：
</td>
<td>
<input type="text" name="user_email"
value=" <%=rs.getString("user_email")%>" />
</td>
</tr>
<tr>
<td>
密码：
</td>
<td>
<input type="text" name="user_password"
value=" <%=rs.getString("user_password")%>" />
</td>
</tr> <tr>
<td>
系：
</td>
<td>
<select name="user_xi" id="user_xi">
<%
sql = "select * from t_xi";
ResultSet r1 = user.getconnection(sql);
while (r1.next()) {
%>
<option value=" <%=r1.getString("xi_id")%>">
<%=r1.getString("xi_name")%>
</option>
<%
}
%>
</select>
</td>
</tr>
<tr>
<td>
学历：
</td>
<td>
<input type="text" name="user_xueli"
value=" <%=rs.getString("user_xueli")%>" />
</td>
</tr>
<tr>
<td>
学位：
</td>
<td>
<input type="text" name="user_xuewei"
value=" <%=rs.getString("user_xuewei")%>" />
</td>
</tr>
<tr>
<td>
毕业院校：
</td>
<td>
<input type="text" name="user_biyeyuanxiao"
value=" <%=rs.getString("user_biyeyuanxiao")%>" />
</td>
</tr>
<tr>
<td>
毕业时间：
</td>
<td>
<input type="text" name="user_biyeshijian"
value=" <%=rs.getString("user_biyeshijian")%>"
onClick="setday(this)" />
</td>
</tr>
<tr>
<td>
职位：
</td>
<td>
<select name="user_role" id="user_role">
<%
sql = "select * from role";
ResultSet r2 = user.getconnection(sql);
while (r2.next()) {
%>
<option value=" <%=r2.getString("role_id")%>">
<%=r2.getString("role_name_CN")%>
</option>
<%
}
r2.close();
%>
</select>
</td>
</tr>
<tr>
<td>
职称：
</td>
<td>
<select name="user_zhicheng" id="zhicheng">
<%
sql = "select * from t_zhicheng";
ResultSet r3 = user.getconnection(sql);
while (r3.next()) {
%>
<option value=" <%=r3.getString("zhicheng_id")%>">
<%=r3.getString("zhicheng_name")%>
</option>
<%
}
r3.close();
%>
</select>
</td>
</tr>
<tr>
<td>
是否硕导：
</td>
<td>
<select name="user_shuodao" id="user_shuodao">
<option value="是">
是
</option>
<option value="否">
否
</option>
</select>
</td>
</tr>
<tr>
<td>
状态：
</td>
<td>
<select name="user_zhuangtai" id="user_zhuangtai">
<option value="在校">
在校
</option>
<option value="外聘">
外聘
</option>
<option value="离校">
离校
</option>
</select>
</td>
</tr>
<tr>
<td>
学科方向：
</td>
<td>
<input type="text" name="user_xuekefangxiang"
value=" <%=rs.getString("user_xuekefangxiang")%>">
</td>
</tr>
<tr>
<td colspan="2">
个人简介：
</td>
</tr>
<tr>
<td colspan="2">
<textarea name="user_jianjie" cols="60" rows="10"> </textarea>
</td>
</tr>
<tr>
<td colspan="2"> <img name="viewpic" id="viewpic"
src="<%=rs.getString("user_photo")%>" width="359" height="286"> </td>
</tr>
<tr>
<td colspan="2">
<input type="file" name="user_photo" id="user_photo"
onChange="yulan();">
</td>
</tr>
<tr>
<td height="40" colspan="2">
</td>
</tr>
<tr>
<td colspan="2">
      
<input type="submit" value="提交修改">
         
<input type="button" value="退出" onClick="window.close()">
</td>
</tr> </table>
</form>
</body>
</html>
括号位置错了
src="<%=rs.getString("user_photo")%>" width="359" height="286">在控制台打印你的rs.getString("user_photo")看下路径和当前页面的路径
记得是相对路径
给的路径是图片相对于你的webroot目录
比如：tomcat\webapps\dwr
是相对于dwr的位置。
接着上面的说
还有你的jsp相对于dwr的位置!