package cn.taosir.demo;

public class AlipayConfig {
  // 頁面跳轉(zhuǎn)同步通知頁面路徑 需http://格式的完整路徑，不能加?id=123這類自定義參數(shù)
  public static String return_url = "http://localhost:8080/success.jsp";
  // 服務(wù)器異步通知頁面路徑 需http://格式的完整路徑，不能加?id=123這類自定義參數(shù)，必須外網(wǎng)可以正常訪問
  public static String notify_url = "http://localhost:8080/notify";
  // 應(yīng)用ID,您的APPID，收款賬號既是您的APPID對應(yīng)支付寶賬號
  public static String app_id = "";
  // 支付寶公鑰,查看地址：https://openhome.alipay.com/platform/keyManage.htm 對應(yīng)APPID下的支付寶公鑰。
  public static String alipay_public_key = "";
  // 商戶私鑰，您的PKCS8格式RSA2私鑰
  public static String merchant_private_key = "";
  // 簽名方式
  public static String sign_type = "RSA2";
  // 字符編碼格式
  public static String charset = "utf-8";
  // 支付寶網(wǎng)關(guān)
  public static String gatewayUrl = "https://openapi.alipaydev.com/gateway.do";
}

package cn.taosir.demo;

import java.io.IOException;
import java.util.Map;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet("/notify")
public class NotifyServlet extends HttpServlet{
  @Override
  protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    System.out.println("接收到支付寶的異步通知請求——");
    Map<String,String[]> parameterMap=request.getParameterMap();
    System.out.println(parameterMap);
    //成功處理后返回success
    response.getWriter().write("success");
  }
}

package cn.taosir.demo;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Calendar;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.request.AlipayTradePagePayRequest;
import com.alipay.api.response.AlipayTradePagePayResponse;

@WebServlet("/order/confirm")
public class OrderServlet extends HttpServlet{
  @Override
  protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    System.out.println("開始處理OrderServlet的服務(wù)");
    String title = "濤先森";
    String total = "666666";
    String message = "如有什么建議歡迎留言評論";
    //生成訂單號
    SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyyMMddHHmmss");
    String orderSn = simpleDateFormat.format(Calendar.getInstance().getTime());
    //向支付寶發(fā)送請求
    //獲得初始化的AlipayClient
    AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.gatewayUrl, AlipayConfig.app_id,
        AlipayConfig.merchant_private_key, "json", AlipayConfig.charset, AlipayConfig.alipay_public_key,
        AlipayConfig.sign_type);
    //設(shè)置請求參數(shù)
    AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();
    alipayRequest.setReturnUrl(AlipayConfig.return_url);
    alipayRequest.setNotifyUrl(AlipayConfig.notify_url);
    //商戶訂單號，商戶網(wǎng)站訂單系統(tǒng)中唯一訂單號，必填
    String out_trade_no = orderSn;
    //付款金額，必填
    String total_amount = total;
    //訂單名稱，必填
    String subject = title;
    //商品描述，可空
    String body = message;
    alipayRequest.setBizContent("{\"out_trade_no\":\"" + out_trade_no + "\"," + "\"total_amount\":\""
        + total_amount + "\"," + "\"subject\":\"" + subject + "\"," + "\"body\":\"" + body + "\","
        + "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");
    //若想給BizContent增加其他可選請求參數(shù)，以增加自定義超時(shí)時(shí)間參數(shù)timeout_express來舉例說明
    //alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\"," 
    //    + "\"total_amount\":\""+ total_amount +"\"," 
    //    + "\"subject\":\""+ subject +"\"," 
    //    + "\"body\":\""+ body +"\"," 
    //    + "\"timeout_express\":\"10m\"," 
    //    + "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");
    //請求參數(shù)可查閱【電腦網(wǎng)站支付的API文檔-alipay.trade.page.pay-請求參數(shù)】章節(jié)
    AlipayTradePagePayResponse alipayResponse = null;
    try {
      alipayResponse=alipayClient.pageExecute(alipayRequest);
      System.out.println(alipayResponse.getBody());
       System.out.println(alipayResponse.getMsg());
    } catch (AlipayApiException e) {
      e.printStackTrace();
    }
    response.setContentType("text/html;charset=UTF-8");
    response.getWriter().write(alipayResponse.getBody());
  }
}