Java tutorial
/* * 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 com.me.Controller; import com.me.DAO.DAO; import java.sql.Connection; import java.sql.PreparedStatement; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.web.servlet.ModelAndView; import org.springframework.web.servlet.mvc.AbstractController; /** * * @author Pranay */ public class AddBookController extends AbstractController { @Override protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) throws Exception { ModelAndView mav = new ModelAndView(); String action = request.getParameter("action"); if (action.equals("get")) { String number = request.getParameter("noOfBooks"); int noOfBooks = Integer.parseInt(number); if (noOfBooks > 0) { mav.addObject("numberBooks", noOfBooks); mav.setViewName("Books"); } } else if (action.equals("post")) { DAO dao = new DAO(); Connection conn = null; PreparedStatement preparedStatement = null; try { conn = dao.getConnection(); String[] isbn = request.getParameterValues("isbn"); String[] title = request.getParameterValues("title"); String[] authors = request.getParameterValues("authors"); String[] price = request.getParameterValues("Price"); String insertQuery = "insert into books(isbn,title,authors,price)" + "values(?,?,?,?)"; int count = 0; for (int i = 0; i < isbn.length; i++) { preparedStatement = conn.prepareStatement(insertQuery); preparedStatement.setString(1, isbn[i]); preparedStatement.setString(2, title[i]); preparedStatement.setString(3, authors[i]); preparedStatement.setFloat(4, Float.parseFloat(price[i])); int result = preparedStatement.executeUpdate(); count++; } mav.addObject("noOfRecords", count); mav.setViewName("Result"); } finally { dao.closeConnection(conn); dao.closeStatement(preparedStatement); } } return mav; } }