支付回调

import com.github.binarywang.wxpay.bean.notify.WxPayNotifyResponse;
import com.github.binarywang.wxpay.bean.notify.WxPayOrderNotifyResult;
import com.github.binarywang.wxpay.exception.WxPayException;
import com.github.binarywang.wxpay.service.WxPayService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import javax.servlet.http.HttpServletRequest;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
/**
 * @author admin
 */
@Slf4j
@RestController
@RequestMapping("pay")
public class PayController {
    /**
     * 微信服务回调
     */
    @RequestMapping("wxCallPack")
    public String wxCallPack(HttpServletRequest request) throws WxPayException, IOException {
        // 将异步通知的参数转化为xml
        String xmlData = getXml(request);
        log.info("微信支付回调：xmlData:{}", xmlData);
        WxPayService wxPayService = WxPayAutoConfiguration.getWxPayService();
        WxPayOrderNotifyResult notifyResult = wxPayService.parseOrderNotifyResult(xmlData);
        // 获取商户订单号
        String outTradeNo = notifyResult.getOutTradeNo();
        // 通过 outTradeNo 查询系统订单数据
        // orderService.updateOrderStatus(outTradeNo, notifyResult.getTransactionId());
        return WxPayNotifyResponse.success("成功");
    }
    private String getXml(HttpServletRequest request) throws IOException {
        InputStream inputStream = null;
        try {
            inputStream = request.getInputStream();
        } catch (IOException e) {
            e.printStackTrace();
        }
        //获取请求输入流
        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        byte[] buffer = new byte[1024];
        int len = 0;
        while ((len=inputStream.read(buffer))!=-1){
            outputStream.write(buffer,0,len);
        }
        outputStream.close();
        inputStream.close();
        return new String(outputStream.toByteArray(), "utf-8");
    }
}

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