package cn.taosir.demo;

public class AlipayConfig {

    // 页面跳转同步通知页面路径 需http://格式的完整路径，不能加?id=123这类自定义参数

    public static String return_url = "http://localhost:8080/success.jsp";

    // 服务器异步通知页面路径  需http://格式的完整路径，不能加?id=123这类自定义参数，必须外网可以正常访问

    public static String notify_url = "http://localhost:8080/notify";

    // 应用ID,您的APPID，收款账号既是您的APPID对应支付宝账号

    public static String app_id = "";

    // 支付宝公钥,查看地址：https://openhome.alipay.com/platform/keyManage.htm 对应APPID下的支付宝公钥。

    public static String alipay_public_key = "";

    // 商户私钥，您的PKCS8格式RSA2私钥

    public static String merchant_private_key = "";

    // 签名方式

    public static String sign_type = "RSA2";

    // 字符编码格式

    public static String charset = "utf-8";

    // 支付宝网关

    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("接收到支付宝的异步通知请求——");

        Map<String,String[]> parameterMap=request.getParameterMap();

        System.out.println(parameterMap);

        //成功处理后返回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("开始处理OrderServlet的服务");

        String title = "涛先森";

        String total = "666666";

        String message = "如有什么建议欢迎留言评论";

        //生成订单号

        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyyMMddHHmmss");

        String orderSn = simpleDateFormat.format(Calendar.getInstance().getTime());

        //向支付宝发送请求

        //获得初始化的AlipayClient

        AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.gatewayUrl, AlipayConfig.app_id,

                AlipayConfig.merchant_private_key, "json", AlipayConfig.charset, AlipayConfig.alipay_public_key,

                AlipayConfig.sign_type);

        //设置请求参数

        AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();

        alipayRequest.setReturnUrl(AlipayConfig.return_url);

        alipayRequest.setNotifyUrl(AlipayConfig.notify_url);

        //商户订单号，商户网站订单系统中唯一订单号，必填

        String out_trade_no = orderSn;

        //付款金额，必填

        String total_amount = total;

        //订单名称，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\"}");

        //若想给BizContent增加其他可选请求参数，以增加自定义超时时间参数timeout_express来举例说明

        //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\"}");

        //请求参数可查阅【电脑网站支付的API文档-alipay.trade.page.pay-请求参数】章节

        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());

    }

}