集成微信支付的代码。兼容小程序，扫码，app，公众号。h5 支付 ，以及 服务商提现

 

/**
 * 因为微信总是很多个商户号很多和appid。很多个密钥文件，所以全部改成手动传值的方式，就可以支持多商户调用
 *
 * @param appId    商户的appid
 * @param mchId    商户的商户号
 * @param key      商户的支付用的密钥
 * @param certPath 商户的退款用的退款文件地址，非必传，没有就传null,具体看开发文档是否需退款文件
 * @throws Exception
 */

调用示例测试代码。扫码支付返回的是一个base64格式的二维码。需要拼接前缀的（有逗号） ：  data:image/jpeg;base64,

public static void main(String[] args) throws Exception {
        WXPayEntrance wxPayEntrance = new WXPayEntrance("wxab8acb865bb1637e", "11473623", "2ab9071b06b9f739b950ddb41db2690d", null);
        WXPayVO wxPayVO = new WXPayVO();
        wxPayVO.setBody("1231231666623");
        wxPayVO.setTotalFee("1");
        wxPayVO.setNotifyUrl("https://********/api/wxpayreturn");
        wxPayVO.setTradeType("NATIVE");
        wxPayVO.setOutTradeNo("ty190523151415047046");
        wxPayVO.setUid(123123123);
        wxPayVO.setSpbillCreateIp("192.168.17.214");
        Map<String, String> map = wxPayEntrance.doUnifiedOrder(wxPayVO);
        System.out.println(map);

//        PayRefundVo payRefundVo = new PayRefundVo();
//        payRefundVo.setOutRefundNo("A190523155119103");
//        payRefundVo.setOutTradeNo("ty190523155047046");
//        payRefundVo.setRefundDesc("退款");
//        payRefundVo.setRefundFee("10");
//        payRefundVo.setUid(123123123);
//        payRefundVo.setRefundFeeType("CNY");
//        payRefundVo.setTotalFee("120");
//        Map<String, String> map = wxPayEntrance.doRefund(payRefundVo);
//        System.out.println(map);
    }

　　

异步回调代码如下：

package com.huis.portal.controller;

import com.huis.portal.weixinpay.WXPayUtil;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.apache.commons.lang3.StringUtils;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Map;
import java.util.SortedMap;
import java.util.TreeMap;

@RestController
@Api(description = "支付模块模块")
@CrossOrigin(origins = "*", maxAge = 3600)
@Transactional(rollbackFor = Exception.class)
public class PayRestController {

   @ApiOperation(value = "微信回调接口", notes = "微信回调接口")
   @RequestMapping(value = "/api/wxpayreturn", method = RequestMethod.POST)
   public String WeixinParentNotifyPage(HttpServletRequest request, HttpServletResponse response) throws Exception {
      // 返回给微信的处理结果
      String result = null;
      String inputLine;
      String notityXml = "";
      request.setCharacterEncoding("UTF-8");
      response.setCharacterEncoding("UTF-8");
      response.setContentType("text/html;charset=UTF-8");
      response.setHeader("Access-Control-Allow-Origin", "*");
      // 微信给返回的东西
      try {
         while ((inputLine = request.getReader().readLine()) != null) {
            notityXml += inputLine;
         }
         request.getReader().close();
      } catch (Exception e) {
         e.printStackTrace();
         result = setXml("fail", "xml获取失败");
         return result;
      }
      if (StringUtils.isEmpty(notityXml)) {
         result = setXml("fail", "xml为空");
         return result;
      }
      Map<String, String> map = WXPayUtil.xmlToMap(notityXml);
      String out_trade_no = (String) map.get("out_trade_no");// 获取商户订单号
      String result_code = (String) map.get("result_code");// 业务结果
      String total_fee = (String) map.get("total_fee");// 获取订单金额
      String appid = (String) map.get("appid");// 获取订单金额
      if (map.get("result_code").equals("SUCCESS")) {
         //TODO

         result = setXml("SUCCESS", "OK");
         return result;
      }else {
         result = setXml("fail", "xml为空");
         return result;
      }

   }
   // 通过xml 发给微信消息
   public static String setXml(String return_code, String return_msg) {
      SortedMap<String, String> parameters = new TreeMap<String, String>();
      parameters.put("return_code", return_code);
      parameters.put("return_msg", return_msg);
      return "<xml><return_code><![CDATA[" + return_code + "]]>" + "</return_code><return_msg><![CDATA[" + return_msg
            + "]]></return_msg></xml>";
   }

}

　　

密钥文件通过maven打包的过程中会被maven编译，修改文件内容，需要在pom文件中加入忽略插件

<plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-resources-plugin</artifactId>
                <configuration>
                    <nonFilteredFileExtensions>
                        <nonFilteredFileExtension>p12</nonFilteredFileExtension>
                        <nonFilteredFileExtension>pem</nonFilteredFileExtension>
                    </nonFilteredFileExtensions>
                </configuration>
            </plugin>

　　

微信支付代码下载地址：链接:https://pan.baidu.com/s/1kZs5hxQuzxmRR50N-DOKSg  密码:u4rj