package demo;

import java.io.IOException;

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.sql.Statement;

import java.util.ArrayList;

import java.util.List;

import javax.servlet.ServletException;

import javax.servlet.annotation.WebServlet;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

/**

 * Servlet implementation class Edit

 */

@WebServlet("/found.do")

public class found extends HttpServlet {

	private static final long serialVersionUID = 1L;

	/**

	 * @see HttpServlet#HttpServlet()

	 */

	public found() {

		super();

		// TODO Auto-generated constructor stub

	}

	/**

	 * @see HttpServlet#service(HttpServletRequest request, HttpServletResponse

	 *      response)

	 */

	protected void service(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {

		//获取用来查询记录的参数

		String name = request.getParameter("name");

		System.out.println(name);

		//设置数据库连接参数

		String url = "jdbc:mysql://localhost:3306/库名?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=GMT";

		String user = "用户名";

		String password = "密码";

		//加载数据库驱动

		try {

			Class.forName("com.mysql.jdbc.Driver");// 加载数据库的JDBC驱动程序

		} catch (ClassNotFoundException e) {

			e.printStackTrace();

		}

		Customer customer = new Customer();

		try (Connection connection = DriverManager.getConnection(url, user, password)) {//连接数据库

			//设置sql语句,查询CustomerName为name的记录的数据,customers为表名

			String sql = "SELECT*FROM customers where CustomerName= ? ";

			PreparedStatement statement = connection.prepareStatement(sql);

			statement.setString(1, name);

			ResultSet rs = statement.executeQuery();

			while (rs.next()) {

				// 将数据库的数据转换成POJO实例

				customer.setCustomerID(rs.getInt("CustomerID"));

				customer.setCustomerName(rs.getString("CustomerName"));

				customer.setContactName(rs.getString("ContactName"));

				customer.setAddress(rs.getString("Address"));

				customer.setCity(rs.getString("City"));

				customer.setPostalCode(rs.getString("PostalCode"));

				customer.setCountry(rs.getString("Country"));

			} 

			rs.close();

			statement.close();

		} catch (SQLException e) {

			e.printStackTrace();

		}

		request.setAttribute("customer", customer);//将获取到的参数封装成对象传递到查找到得记录的界面

		request.getRequestDispatcher("showone.jsp").forward(request, response);

	}

}