我是一��大白菜 — Sun, 04 Nov 2007 11:01:00 GMT

我的数据库不知道怎么回事�Q�可以正常查扑֒�备䆾什么的�Q�就是连不上JSP�Q�希望哪位大虑֏�以帮帮我�Q�小弟在�q�里先谢谢了�Q�这个是我的源代�?br />

<%@page contentType="text/html;charset=GBK"%>
<%@page import="java.sql.*"%>

<%
//1.加蝲数据�?驱动
String DBDriver = "com.microsoft.jdbc.sqlserver.SQLServerDriver";

try
{
Class.forName(DBDriver);
}
catch(java.lang.ClassNotFoundException e)
{
out.println("ROOT/WEB-INF/lib下没�?nbsp; 驱动");
}

//2.建立�q�接
Connection conn = null;
String url = "jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=zgqcw";
String user = "zgqcw";
String password = "zgqcw";

try
{
        conn = DriverManager.getConnection(url,user,password);
}
     catch(SQLException e)
     {
   out.println("没连�?);
}

//3.生成 sql表述执行对象----相当于：(x��)查询分析�?br /> Statement stmt = null;

try
{
        stmt = conn.createStatement();
     }
     catch(SQLException e)
     {
   out.println("没有生成 SQL表述执行对象");
}

//4.执行SQL

String sql="select changshang_id,changshang_ming "
+" from dbo.cs_changshang";

ResultSet rs=stmt.executeQuery(sql);

while(rs.next() ==true)
{
%>

<%=rs.getInt("changshang_id")%>
<%=rs.getString("changshang_ming")%>
<%
}
%>

一�q�行��提�C�：(x��)

type Exception report

message

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

exception

org.apache.jasper.JasperException
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:370)
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 cause

java.lang.NullPointerException
org.apache.jsp._11_jsp._jspService(org.apache.jsp._11_jsp:79)
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:322)
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)

note The full stack trace of the root cause is available in the Apache Tomcat/5.5.11 logs.

Apache Tomcat/5.5.11

我是一��大白菜 2007-11-04 19:01 发表评论

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Apache Tomcat/5.5.11