Hi,
To make sure that your database connection is closed
add the finally block, so it would be like this:
try {
// your code here
//
// you close your db connection here
rs.close();
stmt.close();
conn.close();
} catch (Exception e) {
} finally {
// make sure it's closed
if (rs != null) rs.close();
if (stmt != null) stmt.close();
if (conn != null) conn.close();
}
regards,
Wayan
-----Original Message-----
From: Papo Napolitano [mailto:[EMAIL PROTECTED]]
Sent: Sunday, December 02, 2001 5:55 AM
To: [EMAIL PROTECTED]
Subject: Servlet & Mysql
Hi!
I've written the following Servlet to read an Image from a Mysql Database
and send it to the browser.
public class ImageServlet extends HttpServlet {
public void doGet(HttpServletRequest request,HttpServletResponse response)
throws ServletException, IOException {
try {
InitialContext jndiContext = new InitialContext();
DataSource ds = (DataSource)jndiContext.lookup("java:/mySQLDS") ;
Connection conn = ds.getConnection() ;
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery("SELECT image from docs where idx=" +
request.getParameter("idx"));
if (rs.next()) {
response.setContentType("image/gif");
PrintWriter out = response.getWriter();
out.println(rs.getString("file" + request.getParameter("idximg")));
response.flushBuffer();
}
rs.close();
stmt.close();
conn.close();
ds = null ;
} catch(Exception e){
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("Error: "+e);
}
}
}
It works fine, but I've seen that it leaves mysql instances opened in my
server... Any idea ???
Cheers,
Papo
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