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carController.java
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package Controller;
import Model.ProductStructerToView;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
public class carController extends HttpServlet {
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
try (PrintWriter out = response.getWriter()) {
//讀取首頁,所選擇要做的事情
String operation = request.getParameter("operation");
//預設轉發物件為空
RequestDispatcher rd = null;
HttpSession session = request.getSession();
// String user = request.getParameter("user");
List<String[]> list = listcar();
request.setAttribute("list", list);
//request.setAttribute("list", getProductStructerToView());
// if("car".equals(operation)){
rd = request.getRequestDispatcher("confirmBuy.jsp");
rd.forward(request, response);
}
}
//
// //取得購物車陣列
// List<String> list = listcar();
//
// //將陣列放request櫃台
// request.setAttribute("list", list);
// //轉發
// RequestDispatcher rd2 = request.getRequestDispatcher("confirmBuy1.jsp");
// rd2.forward(request, response);
// }
//
//宣告回傳一個陣列
private List<String[]> listcar() {
//測試用
System.out.println("----------------------------------------------------------" + new java.util.Date());
List<String[]> list = new ArrayList<>();
String url = "jdbc:sqlserver://172.16.168.210:1433;databaseName=member1;";
String user = "sa";
String pass = "12345";
Connection con = null;
Statement stmt = null;
ResultSet rs = null;
try {
//載入驅動程式
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
//建立連線物件
con = DriverManager.getConnection(url, user, pass);
//建立SQL陳述句物件
stmt = con.createStatement();
//要叫SQL做的事
String query = "select * from car"; //撈出所有購物車內容
//執行SQL查詢,獲取結果
rs = stmt.executeQuery(query);
//逐筆讀取所查詢結果
while (rs.next()) {
String[] stringArray = new String[4];
stringArray[0] = rs.getString("產品編號");
stringArray[1] = rs.getString("產品名稱");
stringArray[2] = Integer.toString(rs.getInt("產品單價"));
stringArray[3] = Integer.toString(rs.getInt("產品數量"));
list.add(stringArray);
//ProductStructerToView p = new ProductStructerToView();
// p.set產品編號(rs.getString("產品編號"));
// p.set產品名稱(rs.getString("產品名稱"));
// p.set產品單價(rs.getInt("產品單價"));
// p.set產品數量(rs.getInt("產品數量"));
//p.set產品總價(rs.getInt("產品總價"));
////////////////////////////////////////////////////
//int 產品加入順序 = rs.getInt("產品加入順序");
//String 會員編號 = rs.getString("會員編號");
// String 產品編號 = rs.getString("產品編號");
// String 產品名稱 = rs.getString("產品名稱");
// int 產品單價 = rs.getInt("產品單價");
// int 產品數量 = rs.getInt("產品數量");
//int 產品總價 = rs.getInt("產品總價");
//String s = 會員編號+ " " + 產品編號 + " " + 產品名稱 + " "
// + 產品單價 + " " + 產品數量 + " " + 產品總價;
// String s1 = 產品編號 ;
// String s2 = 產品名稱 ;
// int s3 = 產品單價 ;
// int s4 = 產品數量 ;
// int s5 = 產品單價*產品數量 ;
//
//測試用
//System.out.println(s);
//list.add(s);
//list.add(p);
// list.add(s1);
// list.add(s2);
// list.add(s3);
// list.add(s4);
// list.add(s5);
//
}
} catch (SQLException | ClassNotFoundException e) {
System.err.println(e);
} finally {
try {
if (rs != null) {
rs.close();
}
} catch (SQLException ex) {
System.err.println(ex);
}
try {
if (stmt != null) {
stmt.close();
}
} catch (SQLException ex) {
System.err.println(ex);
}
try {
if (con != null) {
con.close();
}
} catch (SQLException ex) {
System.err.println(ex);
}
}
return list;
}
// <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>
}