您应指定输入name属性.试试这个，

You should specify the input name attribute. Try this,

<form action="form.jsp" method="get">
        <table cellspacing="5" border="0">
                <tr>
                     <td align="right">Email:</td>
                     <td><input type="text" name="email"></td>
                </tr>

                <tr>
                     <td align="right">Password:</td>
                     <td><input type="text" name="password"></td>
                </tr>

                <tr>
                     <td></td>
                     <td><br><input type="submit" value="Submit"></td>
                </tr>
        </table>
        </form>

有关更多信息，您可以尝试以下链接

For more info you can try this link