raex_back/src/main/java/com/izouma/nineth/web/OrderNotifyController.java

package com.izouma.nineth.web;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.alipay.api.AlipayApiException;
import com.alipay.api.internal.util.AlipaySignature;
import com.izouma.nineth.config.AlipayProperties;
import com.izouma.nineth.service.OrderService;
import lombok.AllArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.collections.MapUtils;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.servlet.http.HttpServletRequest;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;

import static com.alibaba.fastjson.serializer.SerializerFeature.PrettyFormat;

@Slf4j
@Controller
@RequestMapping("/notify")
@AllArgsConstructor
public class OrderNotifyController {

    private final AlipayProperties alipayProperties;
    private final OrderService     orderService;

    @PostMapping("/order/alipay")
    @ResponseBody
    public String notify(HttpServletRequest request) throws AlipayApiException {
        Map<String, String> params = new HashMap<>();
        Set<Map.Entry<String, String[]>> entrySet = request.getParameterMap().entrySet();
        for (Map.Entry<String, String[]> entry : entrySet) {
            String name = entry.getKey();
            String[] values = entry.getValue();
            int valLen = values.length;

            if (valLen == 1) {
                params.put(name, values[0]);
            } else if (valLen > 1) {
                StringBuilder sb = new StringBuilder();
                for (String val : values) {
                    sb.append(",").append(val);
                }
                params.put(name, sb.substring(1));
            } else {
                params.put(name, "");
            }
        }
        log.info("支付宝回调 {}", JSON.toJSONString(params, PrettyFormat));
        AlipaySignature.rsaCheckV1(params, alipayProperties.getAliPublicKey(), "UTF-8", "RSA2");
        if (MapUtils.getString(params, "trade_status").equals("TRADE_SUCCESS")) {
            JSONObject body = JSON.parseObject(params.get("body"));
            String action = body.getString("action");
            switch (action) {
                case "payOrder":
                    Long orderId = body.getLong("orderId");
                    orderService.notifyAlipay(orderId, params);
                    break;
            }
            return "success";
        }
        return "error";
    }
}