Statement stmt = con.createStatement();出错

运行JSP登录页面时，链接时出现如下的错误，这要怎么解决呀？急，谢谢！！！！HTTPStatus500----------------------------------... 运行JSP登录页面时，链接时出现如下的错误，这要怎么解决呀？急，谢谢！！！！
HTTP Status 500 -

--------------------------------------------------------------------------------

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: An exception occurred processing JSP page /admin/login_check.jsp at line 10

7: {
8: %>对不起，现在数据库忙，请稍后再试<%
9: }
10: Statement stmt = con.createStatement();
11:
12: %>
13: <html>

Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:505)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:416)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:337)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)

root cause

java.lang.NullPointerException
org.apache.jsp.admin.login_005fcheck_jsp._jspService(login_005fcheck_jsp.java:74)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:337)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)

note The full stack trace of the root cause is available in the Apache Tomcat/6.0.16 logs.

--------------------------------------------------------------------------------

Apache Tomcat/6.0.16 展开

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2008-06-19 · TA获得超过255个赞

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conn 这个对象创建了没

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Statement stmt = con.createStatement();出错

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