【微信支付】springboot 微信app支付包括回调通知
由于微信技术文档比较坑。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。
那就自己记录下吧
废话不多说了，从一个demo说起
怎么用idea创建一个项目不多说了
第一步，添加依赖
添加pom中的 依赖
>
>com.github.wxpay >
>wxpay-sdk >
>0.0.3 >
>
第二步，添加微信配置
这里解释下，这三个关键的东西，
appid需要的是认证过的微信公众平台的appid
mchID是商户平台的商户号
key是商户平台里的
这3个参数可以从微信的商户平台取
server.port=8080
#服务器域名地址
server.service-domain = http://127.0.0.1:8080
#微信app支付
pay.wxpay.app.appID = xxx
pay.wxpay.app.mchID = xxx
pay.wxpay.app.key = xxx
#从微信商户平台下载的安全证书存放的路径、我放在resources下面,切记一定要看看target目录下的class文件下有没有打包apiclient_cert.p12文件
pay.wxpay.app.certPath = static/cert/wxpay/apiclient_cert.p12
#微信支付成功的异步通知接口
pay.wxpay.app.payNotifyUrl=${
server.service-domain}/api/wxPay/notify
第三步，添加配置文件类
package com.wxpay.demo.config;
import com.github.wxpay.sdk.WXPayConfig;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;
import java.io.InputStream;
/**
* 应用模块名称
* Copyright: Copyright (C) 2020 DLANGEL, Inc. All rights reserved.
* Company: 大连安琪科技有限公司
*
* @author Rex
* @since 2020/6/12 10:23
*/
@Component
@ConfigurationProperties(prefix = "pay.wxpay.app")
public class WxPayAppConfig implements WXPayConfig {
/**
* appID
*/
private String appID;
/**
* 商户号
*/
private String mchID;
/**
* API 密钥
*/
private String key;
/**
* API证书绝对路径 (本项目放在了 resources/cert/wxpay/apiclient_cert.p12")
*/
private String certPath;
/**
* HTTP(S) 连接超时时间，单位毫秒
*/
private int httpConnectTimeoutMs = 8000;
/**
* HTTP(S) 读数据超时时间，单位毫秒
*/
private int httpReadTimeoutMs = 10000;
/**
* 微信支付异步通知地址
*/
private String payNotifyUrl;
/**
* 微信退款异步通知地址
*/
private String refundNotifyUrl;
/**
* 获取商户证书内容（这里证书需要到微信商户平台进行下载）
*
* @return 商户证书内容
*/
@Override
public InputStream getCertStream() {
InputStream certStream =getClass().getClassLoader().getResourceAsStream(certPath);
return certStream;
}
@Override
public String getAppID() {
return appID;
}
public void setAppID(String appID) {
this.appID = appID;
}
@Override
public String getMchID() {
return mchID;
}
public void setMchID(String mchID) {
this.mchID = mchID;
}
@Override
public String getKey() {
return key;
}
public void setKey(String key) {
this.key = key;
}
public String getCertPath() {
return certPath;
}
public void setCertPath(String certPath) {
this.certPath = certPath;
}
@Override
public int getHttpConnectTimeoutMs() {
return httpConnectTimeoutMs;
}
public void setHttpConnectTimeoutMs(int httpConnectTimeoutMs) {
this.httpConnectTimeoutMs = httpConnectTimeoutMs;
}
@Override
public int getHttpReadTimeoutMs() {
return httpReadTimeoutMs;
}
public void setHttpReadTimeoutMs(int httpReadTimeoutMs) {
this.httpReadTimeoutMs = httpReadTimeoutMs;
}
public String getPayNotifyUrl() {
return payNotifyUrl;
}
public void setPayNotifyUrl(String payNotifyUrl) {
this.payNotifyUrl = payNotifyUrl;
}
public String getRefundNotifyUrl() {
return refundNotifyUrl;
}
public void setRefundNotifyUrl(String refundNotifyUrl) {
this.refundNotifyUrl = refundNotifyUrl;
}
}
第四步，添加Controller
package com.wxpay.demo.controller;
import com.wxpay.demo.common.ResultMap;
import com.wxpay.demo.service.WxPayService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import javax.servlet.http.HttpServletRequest;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
/**
* 应用模块名称
* Copyright: Copyright (C) 2020 DLANGEL, Inc. All rights reserved.
* Company: 大连安琪科技有限公司
*
* @author Rex
* @since 2020/6/12 11:16
*/
@RestController
@RequestMapping("/wxPay")
public class WxPayController {
@Autowired
private WxPayService wxPayService;
/**
* 统一下单接口
*/
@GetMapping("/unifiedOrder")
public ResultMap unifiedOrder(
@RequestParam String orderNo,
@RequestParam double amount,
@RequestParam String body,
HttpServletRequest request) {
try {
// 1、验证订单是否存在
// 2、开始微信支付统一下单
ResultMap resultMap = wxPayService.unifiedOrder(orderNo, amount, body);
return resultMap;//系统通用的返回结果集，见文章末尾
} catch (Exception e) {
return ResultMap.error("运行异常，请联系管理员");
}
}
/**
* 微信支付异步通知
*/
@RequestMapping(value = "/notify")
public String payNotify(HttpServletRequest request) {
InputStream is = null;
String xmlBack = "第五步，创建service接口和实现
package com.wxpay.demo.service;
import com.wxpay.demo.common.ResultMap;
/**
* 应用模块名称
* Copyright: Copyright (C) 2020 DLANGEL, Inc. All rights reserved.
* Company: 大连安琪科技有限公司
*
* @author Rex
* @since 2020/6/12 11:22
*/
public interface WxPayService {
/**
* @Description: 微信支付统一下单
* @param orderNo: 订单编号
* @param amount: 实际支付金额
* @param body: 订单描述
* @Author:
* @Date: 2019/8/1
* @return
*/
ResultMap unifiedOrder(String orderNo, double amount, String body) ;
/**
* @Description: 订单支付异步通知
* @param notifyStr: 微信异步通知消息字符串
* @Author:
* @Date: 2019/8/1
* @return
*/
String notify(String notifyStr) throws Exception;
/**
* @Description: 退款
* @param orderNo: 订单编号
* @param amount: 实际支付金额
* @param refundReason: 退款原因
* @Author: XCK
* @Date: 2019/8/6
* @return
*/
ResultMap refund(String orderNo, double amount, String refundReason);
}
package com.wxpay.demo.service.impl;
import com.fasterxml.jackson.annotation.ObjectIdGenerators;
import com.github.wxpay.sdk.WXPay;
import com.github.wxpay.sdk.WXPayUtil;
import com.wxpay.demo.common.ResultMap;
import com.wxpay.demo.config.WxPayAppConfig;
import com.wxpay.demo.service.WxPayService;
import jdk.nashorn.internal.ir.annotations.Reference;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.HashMap;
import java.util.Map;
/**
* 应用模块名称
* Copyright: Copyright (C) 2020 DLANGEL, Inc. All rights reserved.
* Company: 大连安琪科技有限公司
*
* @author Rex
* @since 2020/6/12 11:22
*/
@Service
public class WxPayServiceImpl implements WxPayService {
private final Logger logger = LoggerFactory.getLogger(WxPayServiceImpl.class);
@Autowired
private WxPayAppConfig wxPayAppConfig;
@Override
public ResultMap unifiedOrder(String orderNo, double amount, String body) {
Map<String, String> returnMap = new HashMap<>();
Map<String, String> responseMap = new HashMap<>();
Map<String, String> requestMap = new HashMap<>();
try {
WXPay wxpay = new WXPay(wxPayAppConfig);
requestMap.put("body", body); // 商品描述
requestMap.put("out_trade_no", orderNo); // 商户订单号
requestMap.put("total_fee", String.valueOf((int) (amount * 100))); // 总金额
requestMap.put("spbill_create_ip", ""); // 终端IP
requestMap.put("trade_type", "APP"); // App支付类型
requestMap.put("notify_url", wxPayAppConfig.getPayNotifyUrl()); // 接收微信支付异步通知回调地址
Map<String, String> resultMap = wxpay.unifiedOrder(requestMap);
//获取返回码
String returnCode = resultMap.get("return_code");
String returnMsg = resultMap.get("return_msg");
//若返回码为SUCCESS，则会返回一个result_code,再对该result_code进行判断
if ("SUCCESS".equals(returnCode)) {
String resultCode = resultMap.get("result_code");
String errCodeDes = resultMap.get("err_code_des");
if ("SUCCESS".equals(resultCode)) {
responseMap = resultMap;
}
}
if (responseMap == null || responseMap.isEmpty()) {
return ResultMap.error("获取预支付交易会话标识失败");
}
// 3、签名生成算法
Long time = System.currentTimeMillis() / 1000;
String timestamp = time.toString();
returnMap.put("appid", wxPayAppConfig.getAppID());
returnMap.put("partnerid", wxPayAppConfig.getMchID());
returnMap.put("prepayid", responseMap.get("prepay_id"));
returnMap.put("noncestr", responseMap.get("nonce_str"));
returnMap.put("timestamp", timestamp);
returnMap.put("package", "Sign=WXPay");
returnMap.put("sign", WXPayUtil.generateSignature(returnMap, wxPayAppConfig.getKey()));//微信支付签名
return ResultMap.ok().put("data", returnMap);
} catch (Exception e) {
logger.error("订单号：{}，错误信息：{}", orderNo, e.getMessage());
return ResultMap.error("微信支付统一下单失败");
}
}
@Override
public String notify(String notifyStr) {
String xmlBack = "第六步，添加通用返回结果
这个可以有自己的方法，无所谓的
package com.wxpay.demo.common;
import org.apache.http.HttpStatus;
import java.util.HashMap;
import java.util.Map;
/**
* 应用模块名称
* Copyright: Copyright (C) 2020 DLANGEL, Inc. All rights reserved.
* Company: 大连安琪科技有限公司
*
* @author Rex
* @since 2020/6/12 11:18
*/
public class ResultMap extends HashMap<String, Object> {
public ResultMap() {
put("state", true);
put("code", 0);
put("msg", "success");
}
public static ResultMap error(int code, String msg) {
ResultMap r = new ResultMap();
r.put("state", false);
r.put("code", code);
r.put("msg", msg);
return r;
}
public static ResultMap error(String msg) {
return error(HttpStatus.SC_INTERNAL_SERVER_ERROR, msg);
}
public static ResultMap error() {
return error(HttpStatus.SC_INTERNAL_SERVER_ERROR, "未知异常，请联系管理员");
}
public static ResultMap ok(String msg) {
ResultMap r = new ResultMap();
r.put("msg", msg);
return r;
}
public static ResultMap ok(Map<String, Object> par) {
ResultMap r = new ResultMap();
r.putAll(par);
return r;
}
public static ResultMap ok() {
return new ResultMap();
}
public ResultMap put(String key, Object value) {
super.put(key, value);
return this;
}
}
第七步，调用方式
http://localhost:8080/wxPay/unifiedOrder?orderNo=123456789&amount=1&body=支付
然后会收到返回值，主要是拿到prepayid
{"msg":"success","code":0,"data":{"package":"Sign=WXPay","appid":"wx6c6878cc93e5258c","sign":"C32453E8E71EAE8BB0EAE9A3A23C10BD","partnerid":"1544894961","prepayid":"wx1214084649121595f6e455481682463100","noncestr":"Yqxgko2qqshfpEcH","timestamp":"1591942126"},"state":true}
进而可以给app调用这个接口了。从而调起微信支付