急问~~jsp跳转页面的问题！

<jsp:forward page="xx.jsp"/>

userLogin.jsp源代码：
<%@ page contentType="text/html;charset=gb2312" language="java" import="java.sql.*,java.util.Date" errorPage="" %>
<HTML>
<HEAD>
<TITLE>欢迎光临高中会考网站</TITLE>
<META http-equiv=Content-Type content="text/html; charset=gb2312">
<style type="text/css">
td, p, li {font-family:宋体;font-size:9pt;}
A {TEXT-DECORATION: none; TEXT-TRANSFORM: none}
A:link {text-decoration: none; color: #333333;font-size:9pt}
A:visited {text-decoration: none; color: #333333;font-size:9pt}bb
A:active {text-decoration: underline;font-size:9pt}
A:hover {text-decoration: underline; color: #FF8300;font-size:9pt}
.unnamed1 {
font-size: 9pt;
line-height: 9pt;
}
</style>
<LINK href="../Script/my_style.css" type=text/css rel=stylesheet>
<SCRIPT language=javascript src="../Script/bar_ctrl.js"></SCRIPT>
<SCRIPT language=javascript src="../Script/bar_init.js"></SCRIPT></HEAD><script language="javascript">
function FN_Check()
{
if(document.sub.logname.value == "")
{
alert("登录名不能为空,请重新输入！");
document.sub.logname.focus();
return false;
}
if(document.sub.password.value == "")
{
alert("密码不能为空,请重新输入！");
document.sub.password.focus();
return false;
}
return  true;
}
</script><BODY leftMargin=0 topMargin=0 onload=init(); bgproperties="fixed" background="../Images/Main_bg.gif">
  <div align="center">
    <center>
  <table border="0" cellpadding="0" cellspacing="0" style="border-collapse: collapse" bordercolor="#111111" width="756" height="10" id="AutoNumber1" bgcolor="#FFFFFF">
    <tr>
      <td height="10" bordercolor="#000000" valign="bottom" background="../Images/Main_top.gif" width="756" style="border-left:1px solid #000000; border-right:1px solid #000000; font-family: 宋体; font-size: 9pt"></td>
    </tr>
  </table>
    </center>
  </div>
  <div align="center">
    <center>
  <table border="0" cellpadding="0" cellspacing="0" style="border-collapse: collapse" bordercolor="#111111" width="756" height="60" id="AutoNumber1" background="../Images/Top_bg.jpg" bgcolor="#336699">
    <tr>
      <td height="60" bordercolor="#000000" valign="bottom" width="11" style="font-family: 宋体; font-size: 9pt; border-left-style:solid; border-left-width:1; border-right-width:1; border-top-width:1; border-bottom-width:1">　</td>
        <td height="60" bordercolor="#000000" valign="bottom" width="473" style="font-family: 宋体; font-size: 9pt"> </td>
      <td height="60" bordercolor="#000000" width="13" style="font-family: 宋体; font-size: 9pt; border-left-width:1; border-right-style:solid; border-right-width:1; border-top-width:1; border-bottom-width:1">
      　</td>
    </tr>
    </table>
    </center>
  </div>

<div align="center">
          <center>
        <table cellpadding="0" cellspacing="0" style="border-collapse: collapse; border-left-style:solid; border-left-width:1; border-right-style:solid; border-right-width:1; border-top-width:1; border-bottom-width:1" bordercolor="#111111" width="756" height="18" id="AutoNumber5" background="../Images/Menu/idx_bar_p.gif">
          <tr>
            <td width="19" height="18" background="../Images/Menu/idx_bar_b.gif" style="border-left-width: 1; border-right-width: 1; border-top-width: 1; border-bottom-style: solid; border-bottom-width: 1" bordercolor="#808080">
            　</td>
            <td width="101" background="../Images/Menu/idx_bar_b.gif" style="border-left-width: 1; border-right-width: 1; border-top-width: 1; border-bottom-style: solid; border-bottom-width: 1" bordercolor="#808080" valign="top">
              <img border="0" src="..\Images/logo_bottom.gif" width="83" height="12"></td>
            <td width="100" background="../Images/Menu/idx_bar_b.gif" style="border-left-width: 1; border-right-width: 1; border-top-width: 1; border-bottom-style: solid; border-bottom-width: 1" bordercolor="#808080">
              <a href="file:///C|/Tomcat4/webapps/ROOT/britney/Index.htm">
              <img id=button0 border="0" src="..\Images/Menu/i_bar_0a.gif" name=button0 align="left" width="100" height="25"></a></td>

        <td width="100" background="../Images/Menu/idx_bar_b.gif" style="border-left-width: 1; border-right-width: 1; border-top-width: 1; border-bottom-style: solid; border-bottom-width: 1" bordercolor="#808080">
          <font color="#666666"> <a id="menu1" href="div_th.htm"> <img id=button1 border="0" src="..\Images/Menu/i_bar_1a.gif" name=button1 width="100" height="25"></a></font></a></font></td>
            <td width="100" background="../Images/Menu/idx_bar_b.gif" style="border-left-width: 1; border-right-width: 1; border-top-width: 1; border-bottom-style: solid; border-bottom-width: 1" bordercolor="#808080">
              <a id="menu2" href="div_ds.htm">
              <font color="#666666">
              <img id=button2 border="0" src="..\Images/Menu/i_bar_4a.gif" name=button2 width="100" height="25"></font></a></font></td>
            <td width="100" background="../Images/Menu/idx_bar_b.gif" style="border-left-width: 1; border-right-width: 1; border-top-width: 1; border-bottom-style: solid; border-bottom-width: 1" bordercolor="#808080">
              <a id="menu3" href="div_cd.htm">
              <font color="#666666">
              <img id=button3 border="0" src="..\Images/Menu/i_bar_5a.gif" name=button3 width="100" height="25"></font></a></font></td>
            <td width="100" background="../Images/Menu/idx_bar_b.gif" style="border-left-width: 1; border-right-width: 1; border-top-width: 1; border-bottom-style: solid; border-bottom-width: 1" bordercolor="#808080">
              <a id="menu4" href="div_pr.htm">
              <font color="#666666">
              <img id=button4 border="0" src="..\Images/Menu/i_bar_6a.gif" name=button4 width="100" height="25"></font></a></font></td>
            <td width="100" background="../Images/Menu/idx_bar_b.gif" style="border-left-width: 1; border-right-width: 1; border-top-width: 1; border-bottom-style: solid; border-bottom-width: 1" bordercolor="#808080">
              <a id="menu5" href="div_sc.htm">
              <font color="#666666">
              <img id=button5 border="0" src="..\Images/Menu/i_bar_7a.gif" name=button5 width="100" height="25"></font></a></font></td>
            <td width="36" background="../Images/Menu/idx_bar_b.gif" style="border-left-width: 1; border-right-width: 1; border-top-width: 1; border-bottom-style: solid; border-bottom-width: 1" bordercolor="#808080">
            　</td>
          </tr>
        </table>
          </center>
  </div>
  <center>
  <table border="0" cellpadding="0" cellspacing="0" style="border-collapse: collapse; border-left-style:solid; border-left-width:1; border-right-style:solid; border-right-width:1; border-top-width:1; border-bottom-width:1" bordercolor="#111111" width="756" height="511" id="AutoNumber1" bgcolor="#FFFFFF">
    <tr>
      <td height="1" colspan="5" bordercolor="#000000" width="756">         <SCRIPT language=javascript src="../Script/bar_cont.js"></SCRIPT>

转向上一层目录下的Index.htm页面,如果你的Index.htm与userLogin.jsp不在同一个文件夹中，而在不同的文件夹中的话，要使用response.sendRedirect("../dou/Index.htm");
dou代表你存放Index.htm的文件夹名。

谢谢，我换了一下，转向同级页面也不行。真是诡异。可不可以帮我看看我的代码，是不是太冗长了，调用的资源太多而导致的？继续贴上面的代码： </td>
    </tr>
    <tr>
      <td height="50" colspan="5" bordercolor="#000000" valign="bottom" background="../Images/Greybar1.gif" width="756"></td>
    </tr>
    <tr>
      <td height="361" bordercolor="#000000" width="20" rowspan="6">　</td>
      <td height="21" bordercolor="#000000" width="728" colspan="4" valign="middle">
      <a href="index.htm">首页</a>>></td>
    </tr>
    <tr>
      <td height="314" bordercolor="#000000" width="143" align="center" valign="top" rowspan="4">
      <iframe name="I1" scrolling="no" border="0" frameborder="0" width="155" height="90" src="..\Modules/Logon.htm" target="_parent">
      您的浏览器不支持嵌入式框架。</iframe>
      <iframe name="I6" scrolling="no" border="0" frameborder="0" width="155" height="110" src="..\Modules/Score.htm" target="_parent">
      您的浏览器不支持嵌入式框架。</iframe>
        <iframe name="I6" scrolling="no" border="0" frameborder="0" width="155" height="115" src="..\Modules/Application.htm" target="_parent">
      您的浏览器不支持嵌入式框架。</iframe></td>
      <td height="312" bordercolor="#000000" width="44" rowspan="4" valign="top" background="../Images/line02.gif">
      　</td>
      <td height="27" bordercolor="#000000" width="462" valign="top"> <p style="line-height: 150%">
          <b><font size="3" color="#333333"> <img border="0" src="..\Images/Title_front.gif" width="12" height="12"></font><font size="2" color="#555555">
          用户登陆</font></b>
<hr style="height: 5px">
      </td>
      <td height="340" bordercolor="#000000" width="58" rowspan="5" background="../Images/line02.gif">　</td>
    </tr>
    <tr>
      <td height="272" bordercolor="#000000" width="462" valign="top">
        <form method="POST" name="sub">
        <P> </P>
          <P align="center">  <font size="2"> 用户名：
            <input type="text" name="logname" size="20">
            </font></P>
          <P align="center"><font size="2">   密  码：
            <input type="password" name="password" size="20">
            </font></P>
          <P align="center"><font size="2">用户类型：
             <input type="radio" name="usersort" value="admin">
            管理员</font></P>
          <P align="center"><font size="2">                  
            <input type="radio" name="usersort" value="staff">
            工作人员</font></P>
          <P align="center"><font size="2">             
            <input type="radio" name="usersort" value="student" checked>
            考生</font></P>
        <CENTER>
          <P align="center"><font size="3"><font color="#666666" size="2"> 找回密码       新用户注册</font></font></P>
          <P align="center">
            <input type="submit" value="提交" name="g" onclick="return FN_Check();">
            　      
    <input type="reset" value="取消" name="B2">
          </P>
        </center>
      </form>
        </td>
      </tr>    <tr>
      <td height="18" bordercolor="#000000" width="462" valign="top">
        <p style="line-height: 150%"><font color="#555555">
          </font><font color="#555555">　</font></td>
      </tr>
    <tr>
      <td height="18" bordercolor="#000000" align="center" width="681" colspan="3">
        <p style="line-height: 150%">　</td>
    </tr>
    <tr>
      <td height="38" colspan="5" bordercolor="#000000" align="center" width="756">
      <iframe name="I5" target="_parent" scrolling="no" border="0" frameborder="0" width="720" height="30" src="..\Modules/Bottom.htm" align="center">
      您的浏览器不支持嵌入式框架。</iframe></td>
    </tr>
    <tr>
      <td height="17" colspan="5" bordercolor="#000000" align="center" bgcolor="#333333" width="756">
     td>
    </tr>
  </table>
</center>
  </BODY></HTML>

<%
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
String url="jdbc:odbc:beibei";
Connection con=DriverManager.getConnection(url);
out.print("数据库连接成功，恭喜你");Statement stmt=con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE); String usersort = request.getParameter("usersort");
String logname = request.getParameter("logname");
//String password = request.getParameter("password");if(usersort!=null&&logname!=null)
{
String sql="select password from " + usersort + " where logname = '" + logname + "'";
out.print(sql);
ResultSet rs=stmt.executeQuery(sql);
if(rs.next())
{   //out.print("数据库连接成功，恭喜你");

             response.sendRedirect("../Index.htm");
    //String str=response.encodeRedirectURL("student.jsp");
//response.sendRedirect("str");
}
else
{
     out.print("用户名或者密码错误，请重新输入！");
}
rs.close();
}
stmt.close();
con.close();
%>
<完〉

<form action="date.jsp" method="POST" name="sub">
__________________________________________________
注意这：你的表单似乎没有提交
          <P> </P>
          <P align="center">  <font size="2"> 用户名：
            <input type="text" name="logname" size="20">
            </font></P>
          <P align="center"><font size="2">   密  码：
            <input type="password" name="password" size="20">
            </font></P>
          <P align="center"><font size="2">用户类型：
             <input type="radio" name="usersort" value="admin">
            管理员</font></P>
          <P align="center"><font size="2">                  
            <input type="radio" name="usersort" value="staff">
            工作人员</font></P>
          <P align="center"><font size="2">             
            <input type="radio" name="usersort" value="student" checked>
            考生</font></P>
        <CENTER>
          <P align="center"><font size="3"><font color="#666666" size="2"> 找回密码       新用户注册</font></font></P>
          <P align="center">
            <input type="submit" value="提交" name="g" onclick="return FN_Check();">
            　      
    <input type="reset" value="取消" name="B2">
          </P>
        </center>
      </form>

谢谢楼上的，把输出到浏览器的去掉了，还是不行。我做了一个简单的糙页面<%@ page contentType="text/html;charset=GBK" language="java" import="java.sql.*,java.util.Date" errorPage="" %>
<html>
<head>
</head><script language="javascript">
function FN_Check()
{
if(document.sub.logname.value == "")
{
alert("登录名不能为空,请重新输入！");
document.sub.logname.focus();
return false;
}
if(document.sub.password.value == "")
{
alert("密码不能为空,请重新输入！");
document.sub.password.focus();
return false;
}
return  true;
}
</script><BODY>       <form method="POST" name="sub">
       <P>    <font size="3">用户名</font>：
       <input type="text" name="logname" size="20"></P>
        <P>     <font size="3">密  码</font>：
       <input type="password" name="password" size="20"></P></CENTER>
        <P><font size="2">用户类型：
       <input type="radio" name="usersort" value="admin" >管理员</font></P><P><font size="2">           
       <input type="radio" name="usersort" value="staff" >工作人员</font></P><P><font size="2">       
       <input type="radio" name="usersort" value="student" checked>考生</font></P>
<CENTER>
<P align="center"><font size="3"><font color="#0000FF"> 找回密码 </font>    
<font color="#0000FF"> 新用户注册</font></font></P></center></TD></TR>
   <TR>
     <TD vAlign=top borderColor=#000000 width=625 height=48 align="center">
       <input type="submit" value="提交" name="g" onclick="return FN_Check();">　     
         <input type="reset"  value="取消" name="B2">
        </TD></TR>
      </form>
</BODY></HTML>
<%
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
String url="jdbc:odbc:beibei";
Connection con=DriverManager.getConnection(url);
out.print("数据库连接成功，恭喜你");Statement stmt=con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE); String usersort = request.getParameter("usersort");
String logname = request.getParameter("logname");if(usersort!=null&&logname!=null)
{
String sql="select password from " + usersort + " where logname = '" + logname + "'";
out.print(sql);
ResultSet rs=stmt.executeQuery(sql);
if(rs.next())
{
response.sendRedirect("student.jsp");
}
else
{
         out.print("密码错误");
}
rs.close();
}
stmt.close();
con.close();%>这次到成功了，但是为什么在我原来的页面里面就不行呢？代码是完全一样的阿。郁闷死我了:(

chaozi(编程浪子) ,谢谢GG,没有提交？那要怎么改呢？

新建一个JSP 如命名为LoginTemp.jsp，在这个页面进行验证：
Login.jsp:
<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>
<%
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
String url="jdbc:odbc:beibei";
Connection con=DriverManager.getConnection(url);
out.print("数据库连接成功，恭喜你");Statement stmt=con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE); String usersort = request.getParameter("usersort");
String logname = request.getParameter("logname");if(usersort!=null&&logname!=null)
{
String sql="select password from " + usersort + " where logname = '" + logname + "'";
out.print(sql);
ResultSet rs=stmt.executeQuery(sql);
if(rs.next())
{
response.sendRedirect("student.jsp");
}
else
{
out.print("密码错误");
}
rs.close();
}
stmt.close();
con.close();%>

应该是LoginTemp.jsp：
表单提交到LoginTemp.jsp页面表单提交改为
<form action="date.jsp" method="POST" name="sub">
__________________________________________________
既增加action方法。

应该是LoginTemp.jsp：
表单提交到LoginTemp.jsp页面表单提交改为
<form action="LoginTemp.jsp" method="POST" name="sub">
__________________________________________________
既增加action方法

调试易

急问~~jsp跳转页面的问题！

解决方案 »