下面是我的示例代码：

<%@ page import="java.sql.*" %> 
<%@ page import="java.io.*" %> 

<% 
/* Create string of connection url within specified format with machine name, port number and database name. Here machine name id localhost and database name is usermaster. */ 
String connectionURL = "jdbc:mysql://localhost/ekoh"; 

// declare a connection by using Connection interface 
Connection connection = null; 

// Load JBBC driver "com.mysql.jdbc.Driver"
Class.forName("com.mysql.jdbc.Driver").newInstance(); 

/* Create a connection by using getConnection() method that takes parameters of string type connection url, user name and password to connect to database. */ 
connection = DriverManager.getConnection(connectionURL, "root", "");

// check weather connection is established or not by isClosed() method 
if(!connection.isClosed())
%>
<font size="+3" color="green"></b>
<% 
out.println("Successfully connected to " + "MySQL server using TCP/IP...");
connection.close();
}
catch(Exception ex){
%>
</font>
<font size="+3" color="red"></b>
<%
out.println("Unable to connect to database.");
}
%>

我的数据库名称是“ekoh”，我使用的是没有密码的root帐户。。我仍然不知道为什么它到现在还不工作。。你能给予我一些替代代码运行吗？：）n.b.我用Tomcat和MySql在XAMPP中编写JSP。