【谷粒学院】微信扫码支付（224~238）

224.项目第十五天内容介绍

225.课程评论实现过程分析

226.课程支付功能需求分析

1、课程支付说明
（1）课程分为免费课程和付费课程，如果是免费课程可以直接观看，如果是付费观看的课程，用户需下单支付后才可以观看

（2）如果是免费课程，在用户选择课程，进入到课程详情页面时候，直接显示 “立即观看”，用户点击立即观看，可以切换到播放列表进行视频播放

2、付费课程流程
（1）如果是付费课程，在用户选择课程，进入到课程详情页面时候，会显示 “立即购买”

（2）点击“立即购买”，会生成课程的订单，跳转到订单页面

（3）点击“去支付”，会跳转到支付页面，生成微信扫描的二维码

（4）使用微信扫描支付后，会跳转回到课程详情页面，同时显示“立即观看”

227.课程支付功能（准备工作）

一、创建支付模块和准备
1、在service模块下创建子模块service_order

2、在service_order模块中引入依赖

<dependencies>
    <dependency>
        <groupId>com.github.wxpay</groupId>
        <artifactId>wxpay-sdk</artifactId>
        <version>0.0.3</version>
    </dependency>

    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>fastjson</artifactId>
    </dependency>
</dependencies>

3、创建支付相关的表

CREATE TABLE `t_order` (
  `id` char(19) NOT NULL DEFAULT '',
  `order_no` varchar(20) NOT NULL DEFAULT '' COMMENT '订单号',
  `course_id` varchar(19) NOT NULL DEFAULT '' COMMENT '课程id',
  `course_title` varchar(100) DEFAULT NULL COMMENT '课程名称',
  `course_cover` varchar(255) DEFAULT NULL COMMENT '课程封面',
  `teacher_name` varchar(20) DEFAULT NULL COMMENT '讲师名称',
  `member_id` varchar(19) NOT NULL DEFAULT '' COMMENT '会员id',
  `nickname` varchar(50) DEFAULT NULL COMMENT '会员昵称',
  `mobile` varchar(11) DEFAULT NULL COMMENT '会员手机',
  `total_fee` decimal(10,2) DEFAULT '0.01' COMMENT '订单金额（分）',
  `pay_type` tinyint(3) DEFAULT NULL COMMENT '支付类型（1：微信 2：支付宝）',
  `status` tinyint(3) DEFAULT NULL COMMENT '订单状态（0：未支付 1：已支付）',
  `is_deleted` tinyint(1) unsigned NOT NULL DEFAULT '0' COMMENT '逻辑删除 1（true）已删除， 0（false）未删除',
  `gmt_create` datetime NOT NULL COMMENT '创建时间',
  `gmt_modified` datetime NOT NULL COMMENT '更新时间',
  PRIMARY KEY (`id`),
  UNIQUE KEY `ux_order_no` (`order_no`),
  KEY `idx_course_id` (`course_id`),
  KEY `idx_member_id` (`member_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='订单';



INSERT INTO `t_order` VALUES ('1195693605513891841','1195693605555834880','18','Java精品课程','http://guli-file.oss-cn-beijing.aliyuncs.com/cover/2019/03/06/866e9aca-b530-4f71-a690-72d4a4bfd1e7.jpg','晴天','1','小三1231','13700000001',1,NULL,0,0,'2019-11-16 21:22:25','2019-11-16 21:22:25'),('1195694200178118657','1195694200186507264','18','Java精品课程','http://guli-file.oss-cn-beijing.aliyuncs.com/cover/2019/03/06/866e9aca-b530-4f71-a690-72d4a4bfd1e7.jpg','晴天','1','小三1231','13700000001',1,NULL,0,0,'2019-11-16 21:24:47','2019-11-16 21:24:47'),('1196264007411744769','1196264005255872512','1192252213659774977','java基础课程：test','https://guli-file-190513.oss-cn-beijing.aliyuncs.com/cover/default.gif','晴天','1','小三1231','13700000001',1,NULL,1,0,'2019-11-18 11:09:00','2019-11-18 11:10:14'),('1196265495278174209','1196265495273979904','18','Java精品课程','http://guli-file.oss-cn-beijing.aliyuncs.com/cover/2019/03/06/866e9aca-b530-4f71-a690-72d4a4bfd1e7.jpg','晴天','1','小三1231','13700000001',1,NULL,0,0,'2019-11-18 11:14:54','2019-11-18 11:14:54');


CREATE TABLE `t_pay_log` (
  `id` char(19) NOT NULL DEFAULT '',
  `order_no` varchar(20) NOT NULL DEFAULT '' COMMENT '订单号',
  `pay_time` datetime DEFAULT NULL COMMENT '支付完成时间',
  `total_fee` decimal(10,2) DEFAULT '0.01' COMMENT '支付金额（分）',
  `transaction_id` varchar(30) DEFAULT NULL COMMENT '交易流水号',
  `trade_state` char(20) DEFAULT NULL COMMENT '交易状态',
  `pay_type` tinyint(3) NOT NULL DEFAULT '0' COMMENT '支付类型（1：微信 2：支付宝）',
  `attr` text COMMENT '其他属性',
  `is_deleted` tinyint(1) unsigned NOT NULL DEFAULT '0' COMMENT '逻辑删除 1（true）已删除， 0（false）未删除',
  `gmt_create` datetime NOT NULL COMMENT '创建时间',
  `gmt_modified` datetime NOT NULL COMMENT '更新时间',
  PRIMARY KEY (`id`),
  UNIQUE KEY `uk_order_no` (`order_no`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='支付日志表';



INSERT INTO `t_pay_log` VALUES ('1194498446013001730','1194498300579704832','2019-11-13 14:13:17',1,'4200000469201911130676624386','SUCCESS',1,'{\"transaction_id\":\"4200000469201911130676624386\",\"nonce_str\":\"2Lc23ILl231It53M\",\"trade_state\":\"SUCCESS\",\"bank_type\":\"CFT\",\"openid\":\"oNpSGwR-QGG5DaZtDkh2UZlsFDQE\",\"sign\":\"5404850AA3ED0E844DE104651477F07A\",\"return_msg\":\"OK\",\"fee_type\":\"CNY\",\"mch_id\":\"1473426802\",\"cash_fee\":\"1\",\"out_trade_no\":\"1194498300579704832\",\"cash_fee_type\":\"CNY\",\"appid\":\"wx8397f8696b538317\",\"total_fee\":\"1\",\"trade_state_desc\":\"支付成功\",\"trade_type\":\"NATIVE\",\"result_code\":\"SUCCESS\",\"attach\":\"\",\"time_end\":\"20191113141314\",\"is_subscribe\":\"N\",\"return_code\":\"SUCCESS\"}',0,'2019-11-13 14:13:17','2019-11-13 14:13:17'),('1195253787449430017','1195253049260314624','2019-11-15 16:14:44',1,'4200000454201911150981874895','SUCCESS',1,'{\"transaction_id\":\"4200000454201911150981874895\",\"nonce_str\":\"MAM5UM4Xhv1lItvO\",\"trade_state\":\"SUCCESS\",\"bank_type\":\"CFT\",\"openid\":\"oNpSGwR-QGG5DaZtDkh2UZlsFDQE\",\"sign\":\"7DBDCAF4A078B30BB3EF073E6A238C20\",\"return_msg\":\"OK\",\"fee_type\":\"CNY\",\"mch_id\":\"1473426802\",\"cash_fee\":\"1\",\"out_trade_no\":\"1195253049260314624\",\"cash_fee_type\":\"CNY\",\"appid\":\"wx8397f8696b538317\",\"total_fee\":\"1\",\"trade_state_desc\":\"支付成功\",\"trade_type\":\"NATIVE\",\"result_code\":\"SUCCESS\",\"attach\":\"\",\"time_end\":\"20191115161440\",\"is_subscribe\":\"N\",\"return_code\":\"SUCCESS\"}',0,'2019-11-15 16:14:44','2019-11-15 16:14:44'),('1196264321397342210','1196264005255872512','2019-11-18 11:10:14',1,'4200000453201911184025781554','SUCCESS',1,'{\"transaction_id\":\"4200000453201911184025781554\",\"nonce_str\":\"D1dHexCLIFIxAAg2\",\"trade_state\":\"SUCCESS\",\"bank_type\":\"CFT\",\"openid\":\"oNpSGwR-QGG5DaZtDkh2UZlsFDQE\",\"sign\":\"C9F5CA1EE49EA7891736D73BEB423962\",\"return_msg\":\"OK\",\"fee_type\":\"CNY\",\"mch_id\":\"1473426802\",\"cash_fee\":\"1\",\"out_trade_no\":\"1196264005255872512\",\"cash_fee_type\":\"CNY\",\"appid\":\"wx8397f8696b538317\",\"total_fee\":\"1\",\"trade_state_desc\":\"支付成功\",\"trade_type\":\"NATIVE\",\"result_code\":\"SUCCESS\",\"attach\":\"\",\"time_end\":\"20191118111011\",\"is_subscribe\":\"N\",\"return_code\":\"SUCCESS\"}',0,'2019-11-18 11:10:14','2019-11-18 11:10:14');

4、使用代码生成器生成相关代码

5、编写application.properties配置文件

# 服务端口
server.port=8007
# 服务名
spring.application.name=service-order

# mysql数据库连接
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/guli?serverTimezone=GMT%2B8
spring.datasource.username=root
spring.datasource.password=root

#返回json的全局时间格式
spring.jackson.date-format=yyyy-MM-dd HH:mm:ss
spring.jackson.time-zone=GMT+8

#配置mapper xml文件的路径
mybatis-plus.mapper-locations=classpath:com/atguigu/orderservice/mapper/xml/*.xml

#mybatis日志
mybatis-plus.configuration.log-impl=org.apache.ibatis.logging.stdout.StdOutImpl

# nacos服务地址
spring.cloud.nacos.discovery.server-addr=127.0.0.1:8848

#开启熔断机制
feign.hystrix.enabled=true
# 设置hystrix超时时间，默认1000ms
hystrix.command.default.execution.isolation.thread.timeoutInMilliseconds=3000

228.课程支付功能（生成订单接口1）

需要的接口
第一个接口：生成订单的接口
第二个接口：根据订单id查询订单信息
第三个接口：生成微信支付的二维码
第四个接口：查询订单支付状态接口

第一个接口、生成订单的接口controller

//1 生成订单的方法
    @PostMapping("createOrder/{courseId}")
    public R saveOrder(@PathVariable String courseId, HttpServletRequest request) {
        //创建订单，返回订单号
        //传入课程id和用户id，service里面会根据课程和用户id远程调用获取客户和用户信息生成订单号
        String orderNo = orderService.createOrders(courseId,JwtUtils.getMemberIdByJwtToken(request));
        return R.ok().data("orderId",orderNo);
    }

在service_edu创建接口
实现根据课程id获取课程信息，返回课程信息对象

//根据课程id查询课程信息
@GetMapping("getDto/{courseId}")
public com.atguigu.commonutils.vo.CourseInfoForm getCourseInfoDto(@PathVariable String courseId) {
        CourseInfoForm courseInfoForm = courseService.getCourseInfo(courseId);
        com.atguigu.commonutils.vo.CourseInfoForm courseInfo = new com.atguigu.commonutils.vo.CourseInfoForm();
        BeanUtils.copyProperties(courseInfoForm,courseInfo);
        return courseInfo;
}

在service_ucenter创建接口
实现用户id获取用户信息，返回用户信息对象

//根据token字符串获取用户信息
@PostMapping("getInfoUc/{id}")
public com.atguigu.commonutils.vo.UcenterMember getInfo(@PathVariable String id) {
        //根据用户id获取用户信息
        UcenterMember ucenterMember = memberService.getById(id);
        com.atguigu.commonutils.vo.UcenterMember memeber = new com.atguigu.commonutils.vo.UcenterMember();
        BeanUtils.copyProperties(ucenterMember,memeber);
        return memeber;
}

229.课程支付功能（生成订单接口2）

（1）在service_order模块创建接口，实现远程调用

EduClient

@Component
@FeignClient("service-edu")
public interface EduClient {
    //根据课程id查询课程信息
    @GetMapping("/eduservice/course/getDto/{courseId}")
    public com.atguigu.commonutils.vo.CourseInfoForm getCourseInfoDto(@PathVariable("courseId") String courseId);
}

UcenterClient

@Component
@FeignClient("service-ucenter")
public interface UcenterClient {
    //根据课程id查询课程信息
    @PostMapping("/ucenterservice/member/getInfoUc/{id}")
    public com.atguigu.commonutils.vo.UcenterMember getInfo(@PathVariable("id") String id);
}

在service_order模块编写创建订单service

//1 生成订单的方法
    @Override
    public String createOrders(String courseId, String memberId) {
        //通过远程调用根据用户id获取用户信息
        UcenterMemberOrder userInfoOrder = ucenterClient.getUserInfoOrder(memberId);

        //通过远程调用根据课程id获取课信息
        CourseWebVoOrder courseInfoOrder = eduClient.getCourseInfoOrder(courseId);

        //创建Order对象，向order对象里面设置需要数据
        Order order = new Order();
        order.setOrderNo(OrderNoUtil.getOrderNo());//订单号
        order.setCourseId(courseId); //课程id
        order.setCourseTitle(courseInfoOrder.getTitle());
        order.setCourseCover(courseInfoOrder.getCover());
        order.setTeacherName(courseInfoOrder.getTeacherName());
        order.setTotalFee(courseInfoOrder.getPrice());
        order.setMemberId(memberId);
        order.setMobile(userInfoOrder.getMobile());
        order.setNickname(userInfoOrder.getNickname());
        order.setStatus(0);  //订单状态（0：未支付 1：已支付）
        order.setPayType(1);  //支付类型 ，微信1
        baseMapper.insert(order);
         //返回订单号
        return order.getOrderNo();
    }

230.课程支付功能（查询订单接口）

第二个接口、根据订单id查询订单信息

    @GetMapping("getOrderInfo/{orderId}")
    public R getOrderInfo(@PathVariable String orderId) {
        QueryWrapper<Order> wrapper = new QueryWrapper<>();
        wrapper.eq("order_no",orderId);
        Order order = orderService.getOne(wrapper);
        return R.ok().data("item",order);
    }

231.生成订单前端页面整合（1）

一、页面样式修改

1、复制样式文件到assets

2、修改default.vue页面

import '~/assets/css/reset.css'
import '~/assets/css/theme.css'
import '~/assets/css/global.css'
import '~/assets/css/web.css'
import '~/assets/css/base.css'
import '~/assets/css/activity_tab.css'
import '~/assets/css/bottom_rec.css'
import '~/assets/css/nice_select.css'
import '~/assets/css/order.css'
import '~/assets/css/swiper-3.3.1.min.css'
import "~/assets/css/pages-weixinpay.css"

二、课程支付前端

1、在api文件夹下创建order.js文件

import request from '@/utils/request'

export default {
    
    //1、创建订单
    createOrder(cid) {
        return request({
            url: '/orderservice/order/createOrder/'+cid,
            method: 'post'
        })
    },
    //2、根据id获取订单
    getById(cid) {
        return request({
            url: '/orderservice/order/getOrder/'+cid,
            method: 'get'
        })
    },
    //3、生成微信支付二维码
    createNative(cid) {
        return request({
            url: '/orderservice/log/createNative/'+cid,
            method: 'get'
        })
    },
    //4、根据id获取订单支付状态
    queryPayStatus(cid) {
        return request({
            url: '/orderservice/log/queryPayStatus/'+cid,
            method: 'get'
        })
    }
}

2、在课程详情页面中添加创建订单方法
在“立即购买”位置添加事件

methods:{
    //根据课程id，调用接口方法生成订单
    createOrder(){
        order.createOrder(this.courseId).then(response => {
            if(response.data.success){
                //订单创建成功，跳转到订单页面
                this.$router.push({ path: '/order/'+ response.data.data.orderId })
            }
        })
    },
}

3、创建订单页面，显示订单信息
在pages下面创建order文件夹，创建_oid.vue页面

在_oid.vue页面调用方法，获取订单信息

（1）页面部分

<!-- 页面部分-->
<template>
  <div class="Page Confirm">
    <div class="Title">
      <h1 class="fl f18">订单确认</h1>
      <img src="~/assets/img/cart_setp2.png" class="fr">
      <div class="clear"></div>
    </div>
    <form name="flowForm" id="flowForm" method="post" action="">
      <table class="GoodList">
        <tbody>
        <tr>
          <th class="name">商品</th>
          <th class="price">原价</th>
          <th class="priceNew">价格</th>
        </tr>
        </tbody>
        <tbody>
        <!-- <tr>
          <td colspan="3" class="Title red f18 fb"><p>限时折扣</p></td>
        </tr> -->
        <tr>
          <td colspan="3" class="teacher">讲师：{{order.teacherName}}</td>
        </tr>
        <tr class="good">
          <td class="name First">
            <a target="_blank" :href="'https://localhost:3000/course/'+order.courseId">
              <img :src="order.courseCover"></a>
            <div class="goodInfo">
              <input type="hidden" class="ids ids_14502" value="14502">
              <a target="_blank" :href="'https://localhost:3000/course/'+ order.courseId">{{order.courseTitle}}</a>
            </div>
          </td>
          <td class="price">
            <p>￥<strong>{{order.totalFee}}</strong></p>
            <!-- <span class="discName red">限时8折</span> -->
          </td>
          <td class="red priceNew Last">￥<strong>{{order.totalFee}}</strong></td>
        </tr>
        <tr>
          <td class="Billing tr" colspan="3">
            <div class="tr">
              <p>共 <strong class="red">1</strong> 件商品，合计<span
                class="red f20">￥<strong>{{order.totalFee}}</strong></span></p>
            </div>
          </td>
        </tr>
        </tbody>
      </table>
      <div class="Finish">
        <div class="fr" id="AgreeDiv">
          
          <label for="Agree"><p class="on"><input type="checkbox" checked="checked">我已阅读并同意<a href="javascript:" target="_blank">《谷粒学院购买协议》</a></p></label>
        </div>
        <div class="clear"></div>
        <div class="Main fl">
          <div class="fl">
            <a :href="'/course/'+order.courseId">返回课程详情页</a>
          </div>
          <div class="fr">
            <p>共 <strong class="red">1</strong> 件商品，合计<span class="red f20">￥<strong
              id="AllPrice">{{order.totalFee}}</strong></span></p>
          </div>
        </div>
        <input name="score" value="0" type="hidden" id="usedScore">
        <button class="fr redb" type="button" id="submitPay" @click="toPay()">去支付</button>
        <div class="clear"></div>
      </div>
    </form>
  </div>
</template>

（2）调用部分

<script>
import orderApi from '@/api/order'
export default {
  //根据订单id获取订单信息
  asyncData({params, error}) {
      return orderApi.getById(params.oid).then(response => {
        return {
            order: response.data.data.item
            }
      })
  },
  methods: {
    //点击去支付，跳转到支付页面
    toPay() {
      this.$router.push({path: '/pay/' + this.order.orderNo})
    }
  }
}
</script>

232.生成订单前端页面整合（2）

233.生成微信支付二维码接口（1）

编写controller

package com.athly.eduorder.controller;
import com.athly.commonutils.R;
import com.athly.eduorder.service.PayLogService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import java.util.Map;

@RestController
@RequestMapping("/eduorder/paylog")
//@CrossOrigin
public class PayLogController {

@Autowired
    private PayLogService payLogService;

    //生成微信支付二维码接口
    //参数是订单号
    @GetMapping("createNative/{orderNo}")
    public R createNative(@PathVariable String orderNo) {
        //返回信息，包含二维码地址，还有其他需要的信息
        Map map = payLogService.createNatvie(orderNo);//传入订单号
        System.out.println("****返回二维码map集合:"+map);
        return R.ok().data(map);
    }
}

234.生成微信支付二维码接口（2）

编写service，需要的参数：
关联的公众号appid：wx74862e0dfcf69954
商户号partner：1558950191
商户partnerkey：T6m9iK73b0kn9g5v426MKfHQH7X8rKwb
回调地址：http://guli.shop/api/order/weixinPay/weixinNotify\n

package com.athly.eduorder.service.impl;

import com.alibaba.fastjson.JSONObject;
import com.athly.eduorder.entity.Order;
import com.athly.eduorder.entity.PayLog;
import com.athly.eduorder.mapper.PayLogMapper;
import com.athly.eduorder.service.OrderService;
import com.athly.eduorder.service.PayLogService;
import com.athly.eduorder.utils.HttpClient;
import com.athly.servicebase.exceptionhandler.ForestException;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.github.wxpay.sdk.WXPayUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;


@Service
public class PayLogServiceImpl extends ServiceImpl<PayLogMapper, PayLog> implements PayLogService {

	@Autowired
    private OrderService orderService;
    
	//生成微信支付二维码接口
    @Override
    public Map createNatvie(String orderNo) {
        try {
            //1 根据订单号查询订单信息
            QueryWrapper<Order> wrapper = new QueryWrapper<>();
            wrapper.eq("order_no",orderNo);
            Order order = orderService.getOne(wrapper);

            //2 使用map设置生成二维码需要参数
            Map m = new HashMap();
            m.put("appid","wx74862e0dfcf69954");//微信ID
            m.put("mch_id", "1558950191");//商户ID
            m.put("nonce_str", WXPayUtil.generateNonceStr());//生成随机的字符串，让每个生成的二维码都不一样
            m.put("body", order.getCourseTitle()); //课程标题
            m.put("out_trade_no", orderNo); //订单号
            m.put("total_fee", order.getTotalFee().multiply(new BigDecimal("100")).longValue()+"");
            m.put("spbill_create_ip", "127.0.0.1");//本地，实际改为域名
            m.put("notify_url", "http://guli.shop/api/order/weixinPay/weixinNotify\n");//回调的地址
            m.put("trade_type", "NATIVE");//支付类型

            //3 发送httpclient请求，传递参数xml格式，微信支付提供的固定的地址
            HttpClient client = new HttpClient("https://api.mch.weixin.qq.com/pay/unifiedorder");
            //设置xml格式的参数
            client.setXmlParam(WXPayUtil.generateSignedXml(m,"T6m9iK73b0kn9g5v426MKfHQH7X8rKwb"));//商户的key
            client.setHttps(true);
            //执行post请求发送
            client.post();

            //4 得到发送请求返回结果
            //返回内容，是使用xml格式返回
            String xml = client.getContent();

            //把xml格式转换map集合，把map集合返回
            Map<String,String> resultMap = WXPayUtil.xmlToMap(xml);

            //最终返回数据 的封装
            Map map = new HashMap();
            map.put("out_trade_no", orderNo);
            map.put("course_id", order.getCourseId());
            map.put("total_fee", order.getTotalFee());
            map.put("result_code", resultMap.get("result_code"));  //返回二维码操作状态码
            map.put("code_url", resultMap.get("code_url"));        //二维码地址

            return map;
        }catch(Exception e) {
            throw new ForestException(20001,"生成二维码失败");
        }

    }
}

HttpClient工具类

package com.athly.eduorder.utils;

import org.apache.http.Consts;
import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.*;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLContextBuilder;
import org.apache.http.conn.ssl.TrustStrategy;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

import javax.net.ssl.SSLContext;
import java.io.IOException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.text.ParseException;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

/**
 * http请求客户端
 * 
 * @author qy
 * 
 */
public class HttpClient {
	private String url;
	private Map<String, String> param;
	private int statusCode;
	private String content;
	private String xmlParam;
	private boolean isHttps;

	public boolean isHttps() {
		return isHttps;
	}

	public void setHttps(boolean isHttps) {
		this.isHttps = isHttps;
	}

	public String getXmlParam() {
		return xmlParam;
	}

	public void setXmlParam(String xmlParam) {
		this.xmlParam = xmlParam;
	}

	public HttpClient(String url, Map<String, String> param) {
		this.url = url;
		this.param = param;
	}

	public HttpClient(String url) {
		this.url = url;
	}

	public void setParameter(Map<String, String> map) {
		param = map;
	}

	public void addParameter(String key, String value) {
		if (param == null)
			param = new HashMap<String, String>();
		param.put(key, value);
	}

	public void post() throws ClientProtocolException, IOException {
		HttpPost http = new HttpPost(url);
		setEntity(http);
		execute(http);
	}

	public void put() throws ClientProtocolException, IOException {
		HttpPut http = new HttpPut(url);
		setEntity(http);
		execute(http);
	}

	public void get() throws ClientProtocolException, IOException {
		if (param != null) {
			StringBuilder url = new StringBuilder(this.url);
			boolean isFirst = true;
			for (String key : param.keySet()) {
				if (isFirst)
					url.append("?");
				else
					url.append("&");
				url.append(key).append("=").append(param.get(key));
			}
			this.url = url.toString();
		}
		HttpGet http = new HttpGet(url);
		execute(http);
	}

	/**
	 * set http post,put param
	 */
	private void setEntity(HttpEntityEnclosingRequestBase http) {
		if (param != null) {
			List<NameValuePair> nvps = new LinkedList<NameValuePair>();
			for (String key : param.keySet())
				nvps.add(new BasicNameValuePair(key, param.get(key))); // 参数
			http.setEntity(new UrlEncodedFormEntity(nvps, Consts.UTF_8)); // 设置参数
		}
		if (xmlParam != null) {
			http.setEntity(new StringEntity(xmlParam, Consts.UTF_8));
		}
	}

	private void execute(HttpUriRequest http) throws ClientProtocolException,
			IOException {
		CloseableHttpClient httpClient = null;
		try {
			if (isHttps) {
				SSLContext sslContext = new SSLContextBuilder()
						.loadTrustMaterial(null, new TrustStrategy() {
							// 信任所有
							public boolean isTrusted(X509Certificate[] chain,
									String authType)
									throws CertificateException {
								return true;
							}
						}).build();
				SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(
						sslContext);
				httpClient = HttpClients.custom().setSSLSocketFactory(sslsf)
						.build();
			} else {
				httpClient = HttpClients.createDefault();
			}
			CloseableHttpResponse response = httpClient.execute(http);
			try {
				if (response != null) {
					if (response.getStatusLine() != null)
						statusCode = response.getStatusLine().getStatusCode();
					HttpEntity entity = response.getEntity();
					// 响应内容
					content = EntityUtils.toString(entity, Consts.UTF_8);
				}
			} finally {
				response.close();
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			httpClient.close();
		}
	}

	public int getStatusCode() {
		return statusCode;
	}

	public String getContent() throws ParseException, IOException {
		return content;
	}
}

225.查询订单支付状态接口（1）

Controller

@RestController
@RequestMapping("/eduorder/paylog")
public class PayLogController {

	//查询订单支付状态
    //参数：订单号，根据订单号查询 支付状态
    @GetMapping("queryPayStatus/{orderNo}")
    public R queryPayStatus(@PathVariable String orderNo) {
        Map<String,String> map = payLogService.queryPayStatus(orderNo);
        System.out.println("*****查询订单状态map集合:"+map);
        if(map == null) {
            return R.error().message("支付出错了");
        }
        //如果返回map里面不为空，通过map获取订单状态
        if(map.get("trade_state").equals("SUCCESS")) {//支付成功
            //添加记录到支付表，更新订单表订单状态
            payLogService.updateOrdersStatus(map);
            return R.ok().message("支付成功");
        }
        return R.ok().code(25000).message("支付中");
    }
}

226.查询订单支付状态接口（2）

@Service
public class PayLogServiceImpl extends ServiceImpl<PayLogMapper, PayLog> implements PayLogService {

	//添加支付记录和更新订单状态
    @Override
    public void updateOrdersStatus(Map<String, String> map) {
        //从map获取订单号
        String orderNo = map.get("out_trade_no");
        //根据订单号查询订单信息
        QueryWrapper<Order> wrapper = new QueryWrapper<>();
        wrapper.eq("order_no",orderNo);
        Order order = orderService.getOne(wrapper);

        //更新订单表订单状态
        if(order.getStatus().intValue() == 1) { return; }
        order.setStatus(1);//1代表已经支付
        orderService.updateById(order);

        //向支付表添加支付记录
        PayLog payLog = new PayLog();
        payLog.setOrderNo(orderNo);  //订单号
        payLog.setPayTime(new Date()); //订单完成时间
        payLog.setPayType(1);//支付类型 1微信
        payLog.setTotalFee(order.getTotalFee());//总金额(分)

        payLog.setTradeState(map.get("trade_state"));//支付状态
        payLog.setTransactionId(map.get("transaction_id")); //流水号
        payLog.setAttr(JSONObject.toJSONString(map));

        baseMapper.insert(payLog);
    }
}

237.生成微信支付二维码前端

4、创建支付页面，生成二维码完成支付
（1）页面部分

<template>
  <div class="cart py-container">
    <!--主内容-->
    <div class="checkout py-container  pay">
      <div class="checkout-tit">
        <h4 class="fl tit-txt"><span class="success-icon"></span><span class="success-info">订单提交成功，请您及时付款！订单号：{{payObj.out_trade_no}}</span>
        </h4>
        <span class="fr"><em class="sui-lead">应付金额：</em><em class="orange money">￥{{payObj.total_fee}}</em></span>
        <div class="clearfix"></div>
      </div>
      <div class="checkout-steps">
        <div class="fl weixin">微信支付</div>
        <div class="fl sao">
          <p class="red">请使用微信扫一扫。</p>
          <div class="fl code">
            <!-- <img id="qrious" src="~/assets/img/erweima.png" alt=""> -->
            <!-- <qriously value="weixin://wxpay/bizpayurl?pr=R7tnDpZ" :size="338"/> -->
            <qriously :value="payObj.code_url" :size="338"/>
            <div class="saosao">
              <p>请使用微信扫一扫</p>
              <p>扫描二维码支付</p>
            </div>

          </div>

        </div>
        <div class="clearfix"></div>
        <!-- <p><a href="pay.html" target="_blank">> 其他支付方式</a></p> -->
        
      </div>
    </div>
  </div>
</template>

（2）调用部分

<script>
  import orderApi from '@/api/course'

  export default {
    //根据订单id生成微信支付二维码
    asyncData({params, error}) {
      return orderApi.createNative(params.pid).then(response => {
        return {
          payObj: response.data.data
        }
      })
    },
    data() {
      return {
        timer: null,  // 定时器名称
        initQCode: '',
        timer1:''
      }
    },
    mounted() {
      //在页面渲染之后执行
      //每隔三秒，去查询一次支付状态
      this.timer1 = setInterval(() => {
        this.queryPayStatus(this.payObj.out_trade_no)
      }, 3000);
    },
    methods: {
      //查询支付状态的方法
      queryPayStatus(out_trade_no) {
        orderApi.queryPayStatus(out_trade_no).then(response => {
          if (response.data.success) {
              //如果支付成功，清除定时器
              clearInterval(this.timer1)
            this.$message({
              type: 'success',
              message: '支付成功!'
            })
            //跳转到课程详情页面观看视频
            this.$router.push({path: '/course/' + this.payObj.course_id})
          }
        })
      }
    }
  }
</script>

238.微信支付前端最终实现

每隔三秒调用一次查询订单状态的方法，查询到支付成功跳转回课程详情页面