NewUser NewUser - 1 month ago 16
MySQL Question

Connecting MySQL from JSP

I just set foot on JSP. I started writing simple programs to display dates, system info. Then I tried to connect a

MySQL database
I have a free hosting account, but I am not able to connect to MySQL database. Here is my code:

<%@ page import="java.sql.*" %>
<%@ page import="java.io.*" %> 
<html>
<head>
<title>Connection with mysql database</title>
</head>
<body>
<h1>Connection status</h1>
<%
try {
String connectionURL = "jdbc:mysql://mysql2.000webhost.com/a3932573_product";
Connection connection = null;
Class.forName("com.mysql.jdbc.Driver").newInstance();
connection = DriverManager.getConnection(connectionURL, "a3932573_dibya", "******");
if(!connection.isClosed())
out.println("Successfully connected to " + "MySQL server using TCP/IP...");
connection.close();
}catch(Exception ex){
out.println("Unable to connect to database.");
}
%>
</font>
</body>
</html>


I am getting Message as Connection Status unable to connect to database. I have tested this connection using
PHP
using the same username, password and database name. Where am I making mistake?

gks gks
Answer

Reason is the driver have not been loaded in the libraries, it does not get instantiated in the connection so the connection failed:

try {
            String connectionURL = "jdbc:mysql://host/db";
            Connection connection = null; 
            Class.forName("com.mysql.jdbc.Driver").newInstance(); 
            connection = DriverManager.getConnection(connectionURL, "username", "password");
            if(!connection.isClosed())
                 out.println("Successfully connected to " + "MySQL server using TCP/IP...");
            connection.close();
        }catch(Exception ex){
            out.println("Unable to connect to database"+ex);
        }   

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