支付宝手机网站支付(基于Java实现支付宝手机网站支付)

• 支付宝支付核心需要的参数是(APPID，PRIVATE_KEY，ALIPAY_PUBLIC_KEY)

1. APPID：创建应用后就有的APPID。
2. PRIVATE_KEY：应用私钥
3. ALIPAY_PUBLIC_KEY：支付宝公钥

• 上面的2，3的参数得自己弄到，参考文档：https://docs.open.alipay.com/291/105971/
• 下载好工具后所需要干的事情：（获取到的应用公钥配置到：蚂蚁金服开放平台中在 “应用信息” - “开发设置” - “加签方式”处点击 “设置应用公钥”。获取到的应用私钥就是：PRIVATE_KEY。支付宝公钥ALIPAY_PUBLIC_KEY：当设置应用公钥完成后就可以查看支付宝公钥内容。）

• 配置Maven依赖：https://mvnrepository.com/artifact/com.alipay.sdk/alipay-sdk-java

    <!-- 支付宝SDK -->
    <dependency>
      <groupId>com.alipay.sdk</groupId>
      <artifactId>alipay-sdk-java</artifactId>
      <version>3.7.4.ALL</version>
    </dependency>

• 配置支付所需配置文件

/**
 * 支付宝支付配置文件
 */
public class AlipayConfig {
    // 1.商户创建应用后获取的appid
    public static String APPID = "********";
    // 2.应用私钥
    public static String PRIVATE_KEY ="*******";
    // 3.支付宝公钥
    public static String ALIPAY_PUBLIC_KEY = "******";
    // 4.回调接口全路径(支付完成异步通知)
    public static String notify_url = "https://******";
    // 5.页面跳转同步通知页面路径(支付完成后跳转的页面)
    public static String return_url = "https://******";
    // 6.请求支付宝的网关地址
    public static String URL = "https://openapi.alipay.com/gateway.do";
    // 7.编码
    public static String CHARSET = "UTF-8";
    // 8.返回格式
    public static String FORMAT = "json";
    // 9.加密类型
    public static String SIGNTYPE = "RSA2";
}

• 业务层预下单

import com.aone.app.common.ali.pay.AlipayConfig;
import com.aone.app.service.AliH5PayService;

import javax.servlet.http.HttpServletRequest;
import java.util.HashMap;
import java.util.Map;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;

import com.alipay.api.request.AlipayTradeWapPayRequest;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

@Service
public class AliH5PayServiceImpl implements AliH5PayService {

    private static final Logger logger = LoggerFactory.getLogger("AliH5PayServiceImpl");

    //H5支付宝支付预下单(预下单)
    public Map<String, String> dounifiedOrder(String type, String out_trade_no, String money, HttpServletRequest request) throws Exception{
        Map<String, String> map=new HashMap<>();

        //获得初始化的AlipayClient
        AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.URL, AlipayConfig.APPID,
                AlipayConfig.PRIVATE_KEY, AlipayConfig.FORMAT, AlipayConfig.CHARSET, AlipayConfig.ALIPAY_PUBLIC_KEY,
                AlipayConfig.SIGNTYPE);

        //设置请求参数passback_params
        String content = "{\"out_trade_no\":\""+ out_trade_no +"\","
                + "\"total_amount\":\""+ "0.01" +"\","
                + "\"subject\":\""+ "订单" +"\","
                + "\"timeout_express\":\""+ "30m" +"\","
                + "\"body\":\""+ "支付宝H5支付" +"\","
                + "\"passback_params\":\""+type +"\","
                + "\"product_code\":\""+"QUICK_WAP_WAY"+"\"}";
        AlipayTradeWapPayRequest alipayRequest = new AlipayTradeWapPayRequest();
        alipayRequest.setReturnUrl(AlipayConfig.return_url);
        alipayRequest.setNotifyUrl(AlipayConfig.notify_url);
        alipayRequest.setBizContent(content);

        //请求
        String result = alipayClient.pageExecute(alipayRequest).getBody();
        logger.error("result{}",request.toString());
        if(StringUtils.isEmpty(request)){
            map.put("code","201");
            map.put("msg","请求失败");
            map.put("result",null);
        }else{
            map.put("code","200");
            map.put("msg","请求成功");
            map.put("result",result);
        }
        return map;
    }

}

• 控制层下单接口以及回调接口

import com.aone.app.common.wx.XMLUtils;
import com.aone.app.service.AliH5PayService;
import io.swagger.annotations.Api;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.BufferedReader;
import java.util.HashMap;
import java.util.Map;

@RestController
@RequestMapping("h5pay")
@Api("H5支付")
public class PayH5Controller {

    private static final Logger log = LoggerFactory.getLogger("PayH5Controller");

    @Autowired
    private AliH5PayService aliH5PayService;

    /**
     * H5支付统一下单
     * @param request
     * @return
     * @throws Exception
     */
    @ResponseBody
    @RequestMapping(value = "wxPay")
    public Map<String, String> weixinPay(HttpServletRequest request) throws Exception{
        String  type= request.getParameter("type");
        String  orderNo= request.getParameter("orderNo");
        String  money= request.getParameter("money");
        return aliH5PayService.dounifiedOrder(type,orderNo,money,request);
    }

    /**
     * H5微信支付异步结果通知
     * @param request
     * @param response
     * @throws Exception
     */
    @RequestMapping(value = "notify")
    public void weixinPayNotify(HttpServletRequest request, HttpServletResponse response) throws Exception {
        BufferedReader reader = request.getReader();
        String line = "";
        Map map = new HashMap();
        String xml = "<xml><return_code><![CDATA[FAIL]]></xml>";;
        StringBuffer inputString = new StringBuffer();
        while ((line = reader.readLine()) != null) {
            inputString.append(line);
        }
        request.getReader().close();
        log.error("----接收到的报文---{}",inputString.toString());
        if(inputString.toString().length()>0){
            map = XMLUtils.parseXmlToList(inputString.toString());
        }else{
            log.error("接受微信报文为空");
        }
        log.error("map={}",map);
        if(map!=null && "SUCCESS".equals(map.get("result_code"))){
            //成功的业务。。。
            xml = "<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>";
            String type=map.get("attach").toString();
            String orderNo=map.get("out_trade_no").toString();
            log.error("订单号{}",map.get("out_trade_no"));log.error("其它必须参数{}",map.get("attach"));
            if(StringUtils.isEmpty(type)||StringUtils.isEmpty(orderNo)){
                log.error("当前参数类型异常");
            }else{
                //回调业务逻辑

            }
        }else{
            //失败的业务。。。
        }
        //告诉微信端已经确认支付成功
        response.getWriter().write(xml);
    }
}            

• 回调接口中解析微信通知XML的工具类XMLUtils，参考微信H5支付，缺少其它东西也可参考其它记录。