myeclipse中运行jsp报错，求解

基本环境已搭建好，用的是mysql-connector-java-5.1.17-bin.jar
<%@ page language="java" import="java.sql.*" pageEncoding="gb2312"%>
<%
Connection conn = null;
Statement stmt = null;
ResultSet rs = null;
String url = null;
String user = null;
String password = null;
try
{
Class.forName("com.myqsl.jdbc.Driver");
url = "jdbc:mysql://localhost:3306/suifeng";
user = "root";
password = "root";
conn = DriverManager.getConnection (url,user,password);
stmt = conn.createStatement();
String query = "select * from user_info";
rs = stmt.executeQuery(query);
%>
<html>
  <head>


    <title>JSP使用JDBC链接MySQL</title>
  </head>

  <body>
    <table border=1 cellpadding=0 cellspacing=0>
    <tr bgcolor=gray>
    <td>FirstName</td>
    <td>LastName</td>
    <td>NickName</td>
    </tr>
<%
while (!rs.isLast())
{
rs.next();
%>
<tr>
<td><%=rs.getString("first_name") %></td>
<td><%=rs.getString("last_name") %></td>
<td><%=rs.getString("nick_naem") %></td>
</tr>
<%
}
}
catch(Exception e)
{
}
finally
{
rs.close();
stmt.close();
conn.close();
}
%>
</table>

  </body>
</html>
报的错误是：
org.apache.jasper.JasperException: Exception in JSP: /simpleDBAccess.jsp:5956: }
57: finally
58: {
59: rs.close();
60: stmt.close();
61: conn.close();
62: }
这是什么意思呢？

解决方案 »

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rs在进行关闭时得判断一下（rs!=null），个人觉得rs应该是null了，在关闭rs, stmt, conn时还得捕获异常。LZ最好把所有的异常信息都贴出来，那样有助于解决问题
好的，因为刚开始接触jsp，所以不是很明白，请多多指教。
org.apache.jasper.JasperException: Exception in JSP: /simpleDBAccess.jsp:6057: }
58: finally
59: {
60: rs.close();
61: stmt.close();
62: conn.close();
63: }
Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:504)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)root causejava.lang.NullPointerException
org.apache.jsp.simpleDBAccess_jsp._jspService(simpleDBAccess_jsp.java:111)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
<%@ page language="java" import="java.sql.*" pageEncoding="gb2312"%>
<%
Connection conn = null;
Statement stmt = null;
ResultSet rs = null;
String url = null;
String user = null;
String password = null;
// String sql = null;
try
{
Class.forName("com.myqsl.jdbc.Driver");
url = "jdbc:mysql://localhost:3306/ch01";
user = "root";
password = "meishi16";
conn = DriverManager.getConnection (url,user,password);
stmt = conn.createStatement();
String query = "select * from user_info";
rs = stmt.executeQuery(query);
%>
<html>
  <head>


    <title>JSP使用JDBC链接MySQL</title>
  </head>

  <body>
    <table border=1 cellpadding=0 cellspacing=0>
    <tr bgcolor=gray>
    <td>FirstName</td>
    <td>LastName</td>
    <td>NickName</td>
    </tr>
<%
while (!rs.isLast())
{
rs.next();
%>
<tr>
<td><%=rs.getString("first_name") %></td>
<td><%=rs.getString("last_name") %></td>
<td><%=rs.getString("nick_naem") %></td>
</tr>
<%
}
}
catch(Exception e)
{
e.printStackTrace();
}
finally
{
try {
if (rs != null) {
rs.close();
}
if (stmt != null) {
stmt.close();
}
if (conn != null) {
conn.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
%>
</table>

  </body>
</html>此时，页面空白什么都不显示。是不是表示数据调不出来？
tomcat中日志是这样的：
java.lang.ClassNotFoundException: com.myqsl.jdbc.Driver
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1352)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1198)
at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:127)
at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:65)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at org.apache.jsp.simpleDBAccess_jsp._jspService(simpleDBAccess_jsp.java:55)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:833)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:639)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1285)
at java.lang.Thread.run(Unknown Source)什么意思呢？
我已经把mysql-connector-java-5.1.17-bin.jar放在了WEB-INF目录下了啊，没连接上mysql数据库么？
连接数据库的jar包没找到。你将mysql的jar包放到工程WEB-INF/lib 目录下面
不是放到WEB-IN下，是放到WEB-IN/lib目录下、
额，写错了。我是放在WEB-IN/lib目录下的
我用Jcreator 写java程序调用数据库，可以成功。
为什么用myeclipse写jsp就不行？
初学，唉~
"com.myqsl.jdbc.Driver" 写错了。