</tr>

        <tr class="zi9pt">

        <td colspan=2><div align="right" id="result" style="font-size:12px;color=red">提示：用户帐号，不能包含空格、</div></td>

        </tr>

        <tr class="zi9pt">

        <td  align="right">密码：</td>

        <td><input type="password" value="" id="pswd" name="pswd"/></td>

        </tr>

        <tr class="zi9pt">

        <td  align="right">确认密码：</td>

        <td><input type="password" value="" id="repswd" name="repswd"/></td>

        </tr>

        <tr class="zi9pt">

        <td colspan=2 align=center><input type="submit" value="&nbsp;确&nbsp;定&nbsp;"/></td>

        </tr>

        </tbody>

        </table>

    </form>

    </body>

</html>

4.2  Servlet类CheckUserName.java

package czz.com;

import java.io.IOException;

import java.io.PrintWriter;

import java.sql.DriverManager;

import java.sql.SQLException;