package?cn.itcast.servlet;

import?java.io.IOException;
import?java.util.ResourceBundle;

import?javax.servlet.ServletException;
import?javax.servlet.http.HttpServlet;
import?javax.servlet.http.HttpServletRequest;
import?javax.servlet.http.HttpServletResponse;

import?cn.itcast.utils.PaymentUtil;

/**
?*?接收付款結果的信息的
?*?
?*?@author?seawind
?*?
?*/
public?class?CallbackServlet?extends?HttpServlet?{

	public?void?doGet（HttpServletRequest?request?HttpServletResponse?response）
			throws?ServletException?IOException?{
		//?1.?獲得支付公司?發回?支付結果數據
		String?r0_Cmd?=?request.getParameter（“r0_Cmd“）;
		String?r1_Code?=?request.getParameter（“r1_Code“）;
		String?r2_TrxId?=?request.getParameter（“r2_TrxId“）;
		String?r3_Amt?=?request.getParameter（“r3_Amt“）;
		String?r4_Cur?=?request.getParameter（“r4_Cur“）;
		String?r5_Pid?=?request.getParameter（“r5_Pid“）;
		String?r6_Order?=?request.getParameter（“r6_Order“）;
		String?r7_Uid?=?request.getParameter（“r7_Uid“）;
		String?r8_MP?=?request.getParameter（“r8_MP“）;
		String?r9_BType?=?request.getParameter（“r9_BType“）;
		String?rb_BankId?=?request.getParameter（“rb_BankId“）;
		String?ro_BankOrderId?=?request.getParameter（“ro_BankOrderId“）;
		String?rp_PayDate?=?request.getParameter（“rp_PayDate“）;
		String?rq_CardNo?=?request.getParameter（“rq_CardNo“）;
		String?ru_Trxtime?=?request.getParameter（“ru_Trxtime“）;
		String?hmac?=?request.getParameter（“hmac“）;

		//?2、驗證支付公司身份
		//?將所有數據加密一次獲得?hmac?通過支付公司發來hmac比較
		String?p1_MerId?=?ResourceBundle.getBundle（“merchantInfo“）.getString（
				“p1_MerId“）;
		String?keyValue?=?ResourceBundle.getBundle（“merchantInfo“）.getString（
				“keyValue“）;
		boolean?result?=?PaymentUtil.verifyCallback（hmac?p1_MerId?r0_Cmd
				r1_Code?r2_TrxId?r3_Amt?r4_Cur?r5_Pid?r6_Order?r7_Uid
				r8_MP?r9_BType?keyValue）;
		if?（result）?{
			//?驗證成功
			if?（r9_BType.equals（“1“））?{
				//?瀏覽器重定向?，通知用戶付款成功！
				response.setContentType（“text/html;charset=utf-8“）;
				response.getWriter（）.println（“您已經支付成功！成功支付金額:?“?+?r3_Amt）;
			}?else?if?（r9_BType.equals（“2“））?{
				//?服務器點對點，易寶通知你
				System.out.println（“服務器進行支付成功數據處理...“）;
				response.getWriter（）.println（“success“）;
			}
		}?else?{
			//?驗證失敗
			System.out.println（“交易數據被篡改！“）;
		}
	}

	public?void?doPost（HttpServletRequest?request?HttpServletResponse?response）
			throws?ServletException?IOException?{
		doGet（request?response）;
	}

}