Context.xml
<?xml version="1.0" encoding="UTF-8"?>
<Context antiJARLocking="true" path="/apacheindia">
<Resource
name="jdbc/testdb" auth="Container"
maxActive="10000" maxIdle="5000" maxWait="60000"
username="root" password="root"
driverClassName="com.mysql.jdbc.Driver"
url="jdbc:mysql://localhost:3305/indiaswap?autoReconnect=true"
logAbandoned="true" removeAbandoned="true"
removeAbandonedTimeout="60" type="javax.sql.DataSource"
/>
</Context>
database1.java
package Db;
import java.sql.DriverManager;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.sql.DataSource;
/**
*
* @author Naveen
*/
public class database1 {
private DataSource dataSource;
public DataSource connectit()
{
java.sql.Connection con=null;
try
{
Context initContext = new InitialContext();
Context envContext = (Context)initContext.lookup("java:/comp/env");
dataSource = (DataSource)envContext.lookup("jdbc/testdb");
}catch(Exception e)
{
}
return dataSource;
}
}
And use this in-Naveentest
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package user;
import Db.database1;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.Statement;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.sql.DataSource;
/**
*
* @author Naveen
*/
@WebServlet(name = "Naveentest", urlPatterns = {"/Naveentest"})
public class Naveentest extends HttpServlet {
database1 db=new database1();
private Connection connection;
private Statement statement;
/**
* Processes requests for both HTTP <code>GET</code> and <code>POST</code>
* methods.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
try {
DataSource ss=db.connectit();
connection=ss.getConnection();
// out.println("Naveen Test"+connection);
statement = connection.createStatement();
String query = "SELECT * FROM posts";
ResultSet resultSet = statement.executeQuery(query);
while (resultSet.next()) {
out.println(resultSet.getString(1) + resultSet.getString(2) + resultSet.getString(3));
}
}
catch(Exception e)
{
}
finally {
out.close();
}
}
// <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
/**
* Handles the HTTP <code>GET</code> method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/**
* Handles the HTTP <code>POST</code> method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/**
* Returns a short description of the servlet.
*
* @return a String containing servlet description
*/
@Override
public String getServletInfo() {
return "Short description";
}// </editor-fold>
}
