insertdb.java

使用servlet写的简单网上书店

package c;

import java.io.IOException;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;

import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import javax.sql.DataSource;

import utils.OrderUtil;


public class InsertDB extends HttpServlet {
	private DataSource ds;
	public void init(ServletConfig config) throws ServletException {
		ds=(DataSource)config.getServletContext().getAttribute("DataSource");
	}

	protected void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
		this.doPost(req, res);
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		HttpSession session = request.getSession(false);

		String pageInfo = "../login.html";
		if(null==session){
		response.sendRedirect(pageInfo);
		}else{
		String str = (String) session.getAttribute("login");

		if ("success".equals(str)) {

			this.InsertToDB();
			pageInfo = "BookList";

		} else {
			pageInfo = "../login.html";
		}
		response.sendRedirect(pageInfo);
		}
	}

	private void InsertToDB() {
		try {
			Connection con=null;
			con = ds.getConnection();

			OrderUtil orderUtil = new OrderUtil(con);
			orderUtil.insertOrder();
			
			con.close();
		} catch (SQLException e) {
			e.printStackTrace();
		}
	}
}