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为什么连接数据库总是出错

l2480035288 发布于 2014-11-11 22:18, 2254 次点击
已经把驱动添加到到tomcat的lib文件里面还有web-inf下的lib里面,可是还是有错

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8" import="java.sql.*,java.sql.ResultSet"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<center>
<h2>访问数据库</h2>
</center>
<table border=1 align="center">
<tr>
<td>姓名</td>
<td>住址</td>
</tr>
<%
    Class.forName("com.mysql.jdbc.Driver");
    Connection con=DriverManager.getConnection("jdbc:mysql://localhost:3306/my","root","111111");
    Statement sm=con.createStatement();
    ResultSet re=sm.executeQuery("select * from my");
    while(re.next())
    {
        %>
        <tr>
        <td><%=re.getString("name") %></td>
        <td><%=re.getString("ads") %></td>
        </tr>
    <%
    }
    re.close();
    con.close();%>
</table>
</body>
</html>




org.apache.jasper.JasperException: javax.servlet.ServletException: java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:491)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:401)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
2 回复
#2
love云彩2014-11-12 09:21
除了添加到lib目录下,还有在conf目录下配置,忘记是哪个xml文件了
#3
编号10162014-11-13 17:06
你看你WEB-INF目录下的lib里有没有一个sqljdbc4.jar
1