jsp 中input 获取图片路径问题

<input type="file" name="p_image" size="30" value="<%= p_image %>"/>
mysql不识别反斜杠
图片路径都不对
所以用JavaScript replace()
方法请问如何使用？这方法
把所有反斜杠\  改成/正斜杠 --------------------编程问答-------------------- <%@ page contentType="text/html;charset=gb2312" %>
<%@ page import="shopBeans.ConnDB" %>
<%@ page import="java.sql.*" %>
<%
String admin_name=(String) session.getAttribute("admin_name");
if(admin_name==null || admin_name=="")
{
out.println("<script language='javascript'>alert('请先登录!');window.location.href='index.jsp';</script>");
}
String p_id=(String) request.getParameter("p_id");
String p_type="",p_name="",p_price="",p_quantity="",p_image="",p_description="";
ConnDB conn=new ConnDB();
String sql="select * from product where p_id='"+p_id+"'";
ResultSet rs = conn.doQuery(sql);
if(rs.next())
{
p_type=rs.getString(1);
p_name=rs.getString(3);
p_price=rs.getString(4);
p_quantity=rs.getString(5);
p_image=rs.getString(6);
p_description=rs.getString(7);
}
rs.close();

%>
<style type="text/css">

</style>
<script>

</script>
<center>
<form action="product_update_ok.jsp?p_id=<%= p_id %>" method="post" onSubmit="return check_product(this);">
<table width="520" border="1" bordercolor="#99CCFF" cellpadding="0" cellspacing="0" style="border-collapse:collapse">
  
  <tr>
    <td height="30" colspan="2" align="center" bgcolor="#99CCFF"><span class="STYLE2">查看/修改商品信息</span></td>
    </tr>
  <tr>
    <td width="146" height=40 align="center"><span class="STYLE1">商品类型</span>：</td>
    <td width="348" align="left">
      <select name="p_type">
  <option value="<%= p_type %>"><%= p_type %></option>
  <%
String str_sql="select t_type from main_type where t_type != '"+p_type+"'";
rs=conn.doQuery(str_sql);
while(rs.next())
{
  %>
   <option value="<%= rs.getString("t_type") %>"><%= rs.getString("t_type") %></option>
  <%}%>
    </select></td>
  </tr>
  <tr>
    <td height="30" align="center"><span class="STYLE1">商品ID</span>：</td>
    <td height="30" align="left">
      <input type="text" name="p_id" size="15" value="<%= p_id %>"/></td>
  </tr>
  <tr>
    <td height="30" align="center"><span class="STYLE1">商品名称</span>：</td>
    <td height="30" align="left">
      <input type="text" name="p_name" size="30" value="<%= p_name %>"  /></td>
  </tr>
  <tr>
    <td height="30" align="center"><span class="STYLE1">商品价格( RMB )</span>：</td>
    <td height="30" align="left">
      <input type="text" name="p_price" size="10" value="<%= p_price %>" /></td>
  </tr>
  <tr>
    <td height="30" align="center"><span class="STYLE1">商品数量</span>：</td>
    <td height="30" align="left">
      <input type="text" name="p_quantity" size="10" value="<%= p_quantity %>"  /></td>
  </tr>
  <tr>
    <td height="30" align="center"><span class="STYLE1">商品图片</span>：</td>
    <td height="30" align="left">
      <input type="file" name="p_image" size="30" value="<%=p_image%>"/>
</td>
  </tr>

  <tr>
    <td height="94" align="center"><span class="STYLE1">商品描述</span>：</td>
    <td height="94" align="left">
      <textarea name="p_description" cols="42" rows="5"><%= p_description %></textarea></td>
  </tr>
  <tr>
    <td height="40" colspan="2" align="center"><input name="submit" type="submit" class="STYLE1" value=" 修改 " />
      <input type="button" class="STYLE1" value=" 返回 " onclick="history.go(-1);"/></td>
  </tr>
</table>
</form>
</center> --------------------编程问答-------------------- p_image.replaceAll("\", "/")
if(rs.next())
{
p_type=rs.getString(1);
p_name=rs.getString(3);
p_price=rs.getString(4);
p_quantity=rs.getString(5);
p_image=rs.getString(6).replaceAll("\", "/");//这里替换下就好了
p_description=rs.getString(7);
} --------------------编程问答-------------------- 看楼主意思是要将图片路径保存到mysql数据库中
可以用mysql replace()方法
PS:SELECT   REPLACE('www.mysql.com',   'w',   'Ww');
--------------------编程问答--------------------

补充：Java ,  Web 开发