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连接数据库源代码：
<%@ page contentType="text/html;charset=gb2312" %>
<%@ page import="java.sql.*"%>
<%
String username = request.getParameter("Username");
String passwd = request.getParameter("Password");
//String sql = "select * from Userb where Username= " + username;
String sql = "select * from Userb where Username= '"+username+"' AND Password = '"+passwd+"'";
Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver").newInstance();
String url = "jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=fan";
String user = "sa";
String password = "";
Connection conn = DriverManager.getConnection(url,user,password);
Statement stmt = conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
ResultSet rs = stmt.executeQuery(sql);
if (!rs.next())
out.println("你已经登陆成功!");
else
out.println( "登陆失败，请重新登陆！");
%>
出错提示：
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: com/microsoft/jdbc/base/BaseDriver
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:845)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:778)
org.apache.jsp.loginsuccess_jsp._jspService(loginsuccess_jsp.java:67)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause
java.lang.NoClassDefFoundError: com/microsoft/jdbc/base/BaseDriver
java.lang.ClassLoader.defineClass0(Native Method)
java.lang.ClassLoader.defineClass(ClassLoader.java:539)
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
java.net.URLClassLoader.defineClass(URLClassLoader.java:251)
java.net.URLClassLoader.access$100(URLClassLoader.java:55)
java.net.URLClassLoader$1.run(URLClassLoader.java:194)
java.security.AccessController.doPrivileged(Native Method)
java.net.URLClassLoader.findClass(URLClassLoader.java:187)
org.apache.catalina.loader.StandardClassLoader.findClass(StandardClassLoader.java:485)
org.apache.catalina.loader.StandardClassLoader.loadClass(StandardClassLoader.java:820)
org.apache.catalina.loader.StandardClassLoader.loadClass(StandardClassLoader.java:721)
org.apache.catalina.loader.StandardClassLoader.loadClass(StandardClassLoader.java:803)
org.apache.catalina.loader.StandardClassLoader.loadClass(StandardClassLoader.java:721)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1327)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1189)
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:148)
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:69)
java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
java.lang.Class.forName0(Native Method)
java.lang.Class.forName(Class.java:141)
org.apache.jsp.loginsuccess_jsp._jspService(loginsuccess_jsp.java:50)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
[ 本帖最后由 perryhg 于 2006-5-27 23:07 编辑 ] |
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发表于 2006-05-27 14:26
