支付宝沙箱

支付宝沙箱流程很多文章写了，主要记录下怎样把商户参数传过去

package com.lzm.controller.Alipay;

import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.request.AlipayTradePagePayRequest;
import com.lzm.utils.AlipayConfig;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.URLDecoder;

/**
 * @author lzm
 * @create 2019- 07- 19- 10:19
 */
@Controller
public class aliPayController {

    //生成有二维码，可供扫码支付的页面
    @RequestMapping(value = "/ToPay.action",method = RequestMethod.POST)
    public String aliPay(HttpServletResponse response, ModelMap map, String chapterId, HttpServletRequest request,
                         String WIDout_trade_no, String WIDtotal_amount, String WIDsubject, String WIDbody) throws IOException, AlipayApiException, IOException, AlipayApiException {
//      String a,String urlName,String couName....+"&a="+a+"&urlName="+urlName+"&couName="+couName
        //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+"?chapterId="+chapterId);
        alipayRequest.setNotifyUrl(AlipayConfig.notify_url);
        //付款ID，必填
        String out_trade_no = WIDout_trade_no;
        //付款金额，必填
        String total_amount = WIDtotal_amount;
        total_amount= URLDecoder.decode(total_amount,"UTF-8");//转码
        //订单名称，必填
        String subject = WIDsubject;
        subject=URLDecoder.decode(subject,"UTF-8");
        //商品描述，可空
        String body = WIDbody;

        alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\","
                + "\"total_amount\":\""+ total_amount +"\","
                + "\"subject\":\""+ subject +"\","
                + "\"body\":\""+ body +"\","
                + "\"timeout_express\":\"1m\","
                + "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");
        //请求
        String result = alipayClient.pageExecute(alipayRequest).getBody();
        response.setContentType("text/html; charset=utf-8");
        PrintWriter out = response.getWriter();
        out.println(result);
        return "test/alipay.trade.page.pay";
    }
}

<form id="orderProject" action="${pageContext.request.contextPath}/ToPay.action" method="post"  >
    <!--//商品编号-->
    <input type="hidden" id="WIDout_trade_no" name="WIDout_trade_no"  />
    <input type="hidden" id="WIDsubject" name="WIDsubject"   />
    <input type="hidden" id="WIDtotal_amount" name="WIDtotal_amount"  />
    <input type="hidden" id="WIDbody" name="WIDbody" />
</form>

4个参数
首先付款ID生成订单

      var vNow = new Date();
        var sNow = "";
        sNow += String(vNow.getFullYear());
        sNow += String(vNow.getMonth() + 1);
        sNow += String(vNow.getDate());
        sNow += String(vNow.getHours());
        sNow += String(vNow.getMinutes());
        sNow += String(vNow.getSeconds());
        sNow += String(vNow.getMilliseconds());
        $("#WIDout_trade_no").val(sNow);

获取生成订单赋值给参数
 //激起付款界面
                $("#WIDout_trade_no").val(data.id);
                $("#WIDsubject").val("车辆维修");
                $("#WIDtotal_amount").val(data.pay);
                $("#WIDbody").val(data.remark);
                $("#orderProject").submit();

$("#orderProject").submit(); 提交后就转到付款页面

现在遇到了这个问题，不知道为什么，感觉是沙箱在维护