微信支付的统一下单小demo

1. 生成二维码

1.导入zxing的依赖

<properties><zxing.version>3.4.0</zxing.version>
</properties>
<dependency><groupId>com.google.zxing</groupId><artifactId>core</artifactId><version>${zxing.version}</version>
</dependency>
<dependency><groupId>com.google.zxing</groupId><artifactId>javase</artifactId><version>${zxing.version}</version>
</dependency>

2.ZxingUitl

import java.awt.BasicStroke;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.InputStream;
import java.util.EnumMap;import javax.imageio.ImageIO;import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;public class ZXingCodeEncodeUtil {// 二维码颜色private static final int BLACK = 0xFF000000;// 二维码背景颜色private static final int WHITE = 0xFFFFFFFF;// 二维码格式参数private static final EnumMap<EncodeHintType, Object> hints = new EnumMap<EncodeHintType, Object>(EncodeHintType.class);static {/** 二维码的纠错级别(排错率),4个级别： L (7%)、 M (15%)、 Q (25%)、 H (30%)(最高H)* 纠错信息同样存储在二维码中，纠错级别越高，纠错信息占用的空间越多，那么能存储的有用讯息就越少；共有四级； 选择M，扫描速度快。*/hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);// 二维码边界空白大小 1,2,3,4 (4为默认,最大)hints.put(EncodeHintType.MARGIN, 1);hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");//设置放入的字符的编码}/*** 创建一个二维码保存到d盘*/public static BufferedImage createZXingCodeSaveToDpan(String content, int width, int height, String path, String imageType) {// try {BitMatrix encode = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, height,hints);// 得到二维码的宽度int code_width = encode.getWidth();// 得到二维码的高度int code_height = encode.getHeight();// 创建一张图片BufferedImage bufferedImage = new BufferedImage(code_width, code_height, BufferedImage.TYPE_INT_RGB);// 向图片中添加内容for(int i = 0; i < code_width; i++) {for(int j = 0; j < code_height; j++) {bufferedImage.setRGB(i, j, encode.get(i, j)?BLACK:WHITE);}}File file = new File(path);if(!file.exists()) {file.createNewFile();}ImageIO.write(bufferedImage, imageType, file);// 将图片保存在d盘System.out.println("二维码生成成功");return bufferedImage;} catch (Exception e) {e.printStackTrace();}return null;}/*** 创建一个带LOGO的二维码*/public static void createZXingCodeWithLogoSaveToDpan(String content, int width, int height, String path, String imageType,InputStream logoStream) {try {// 获得二维码BufferedImage codeNormal  = createZXingCodeSaveToDpan(content, width, height, path, imageType);if(null != codeNormal) {if(null != logoStream) {// 获得二维码的宽高int code_width = codeNormal.getWidth();int code_height = codeNormal.getHeight();// 获得图片的宽高BufferedImage image = ImageIO.read(logoStream);int image_width = image.getWidth();int image_height = image.getHeight();// 计算初始坐标int x = (code_width - image_width) / 2;int y = (code_height - image_height) / 2;// 计算应画在二维码上的宽高int code_logo_width = ((code_width)/5) < image_width ? ((code_width)/5) : image_width;int code_logo_height = ((code_height)/5) < image_height ?  ((code_height)/5) : image_height;// 定义画笔Graphics2D graphics = codeNormal.createGraphics();graphics.setStroke(new BasicStroke(2));// 在二维码上画出图片graphics.drawImage(image, x, y, code_logo_width, code_logo_height, null);// 让画上去的内容生效graphics.dispose();// 将二维码保存到d盘File file = new File(path);if(!file.exists()) {file.createNewFile();}ImageIO.write(codeNormal, imageType, file);}}else {System.out.println("二维码生成失败");}}catch(Exception e) {e.printStackTrace();}}public static void main(String[] args) {createZXingCodeSaveToDpan("weixin://wxpay/bizpayurl?pr=yDRxFJ4", 200, 200, "d://order.jpg", "PNG");}}

3.输出到网页

@Controller
@RequestMapping("qr")
public class QrController {@RequestMapping("doOrder")public void doOrder(HttpServletRequest req, HttpServletResponse resp) throws IOException {BufferedImage bufferedImage = ZXingCodeEncodeUtil.createZXingCodeSaveToDpan("weixin://wxpay/bizpayurl?pr=yDRxFJ4", 400, 400, null, "PNG");ImageIO.write(bufferedImage, "PNG", resp.getOutputStream());}}

总之：zxing的使用就是导入包后

利用MultiFormatWriter对象的encode方法，将content编码返回BitMatrix对象（矩阵信息），然后使用MatrixToImageWriter的静态方法toBufferedImage把矩阵信息转为BufferedImage信息。

2.网络穿透

1.购买隧道，获取authtoken和natapp客户端

https://natapp.cn/member/dashborad

2.cmd执行命令 ,启动natapp，cmd窗口查看域名地址

natapp -authtoken=[authtoken]

3.微信支付

1.官方下载微信sdk

https://pay.weixin.qq.com/wiki/doc/api/native.php?chapter=11_1

2.测试demo

1. MyWXPayConfig

package com.github.wxpay.sdk;import java.io.InputStream;public class MyWXPayConfig  extends WXPayConfig {/*** 获取 App ID** @return App ID*/String getAppID(){return "wx632c8f211f8122c6";}/*** 获取 Mch ID** @return Mch ID*/String getMchID(){return "1497984412";}/*** 获取 API 密钥** @return API密钥*/String getKey(){return "sbNCm1JnevqI36LrEaxFwcaT0hkGxFnC";}/*** 获取商户证书内容** @return 商户证书内容*/InputStream getCertStream(){return null;}/*** 获取WXPayDomain, 用于多域名容灾自动切换* @return*/IWXPayDomain getWXPayDomain(){return new MyWXPayDomain();}}

2.MyWXPayDomain

package com.zzhua.vadmin.wx;public class MyWXPayDomain implements IWXPayDomain {@Overridepublic void report(String domain, long elapsedTimeMillis, Exception ex) {}@Overridepublic DomainInfo getDomain(WXPayConfig config) {DomainInfo domainInfo = new DomainInfo("api.mch.weixin.qq.com", true);return domainInfo;}
}

3.TestPay统一下单

public class TestPay {public static void main(String[] args) throws Exception {MyWXPayConfig payConfig = new MyWXPayConfig();WXPay wxPay = new WXPay(payConfig);Map<String,String> data = new HashMap<String,String>();data.put("body","PS酷教程");//商品标题data.put("out_trade_no","2020070410595900000016");//订单编号data.put("device_info","WEB");//设备信息data.put("fee_type","CNY");//单位：分data.put("total_fee","1");//支付金额data.put("spbill_create_ip","123.12.12.123");//终端ip ,记录ip,可以发现攻击我们的ip并进行屏蔽//重点：回调地址，用来通知支付结果的地址data.put("notify_url","http://au9btz.natappfree.cc/wx/notify"); // natapp提供的地址，由微信回调通知data.put("trade_type","NATIVE");data.put("product_id", "12");Map<String, String> order = wxPay.unifiedOrder(data); // 统一下单System.out.println(order);}
}

4.TestOrderQuery订单查询

public class TestOrderQuery {public static void main(String[] args) throws Exception {MyWXPayConfig payConfig = new MyWXPayConfig();WXPay wxPay = new WXPay(payConfig);HashMap<String, String> data = new HashMap<>();data.put("out_trade_no", "201907041059590016");Map<String, String> payResult = wxPay.orderQuery(data);System.out.println(payResult);}
}

3.将demo导入项目

1.WXPayController

@RequestMapping("wx")
@Controller
@Slf4j
public class WXPayController {// 内网穿透的地址 + 通知的urlprivate final static String notifyUrl = "http://rkiscj.natappfree.cc/wx/notify"; @RequestMapping("payOk")public String payOk(String orderId, Model model) {model.addAttribute("orderId",orderId);return "pay-ok";}/*第一步：生成orderId，带到前端，前端根据id请求支付二维码*/@RequestMapping("showPay")public String toPay(HttpServletRequest req) {String currTimeStr = DateUtil.format(new Date(), "yyyyMMddHHmmssSSS");String orderId = currTimeStr + "PSCOOL";req.setAttribute("orderId", orderId);return "show-pay";}/*第二步：根据前端传过来的id，请求微信接口获取code_url，将它生成二维码图片给img标签*/@RequestMapping("showQrcode")public void showPay(String orderId,HttpServletResponse resp) throws Exception {MyWXPayConfig payConfig = new MyWXPayConfig();WXPay wxPay = new WXPay(payConfig);if (StringUtils.isBlank(orderId)){throw new RuntimeException("出错...");}Map<String, String> data = new HashMap<String, String>();data.put("body", "PS酷教程");//商品标题data.put("out_trade_no", orderId);//订单编号data.put("device_info", "WEB");//设备信息data.put("fee_type", "CNY");//单位：分data.put("total_fee", "1");//支付金额data.put("spbill_create_ip", "123.12.12.123");//终端ip ,记录ip,可以发现攻击我们的ip并进行屏蔽//重点：回调地址，用来通知支付结果的地址data.put("notify_url", notifyUrl);data.put("trade_type", "NATIVE");data.put("product_id", "12");// 获取支付的code_urlMap<String, String> order = wxPay.unifiedOrder(data);String code_url = order.get("code_url");// 生成支付的二维码BufferedImage bufferedImage = ZXingCodeEncodeUtil.generateQrcode(code_url, "PNG");ImageIO.write(bufferedImage, "PNG", resp.getOutputStream());log.info("生成支付二维码: {}", code_url);}/*第三步：用户支付成功后，微信会调用此接口，传回信息*/@RequestMapping("notify")public void doNotify(HttpServletRequest req, HttpServletResponse resp) throws Exception {log.info("回调接口...");ServletInputStream is = req.getInputStream();byte[] bytes = new byte[1024];int len;StringBuffer buffer = new StringBuffer();while ((len = is.read(bytes)) != -1) {String s = new String(bytes, 0, len);buffer.append(s);}// 给微信一个标准的应答resp.getWriter().write("<xml>\n" +"  <return_code><![CDATA[SUCCESS]]></return_code>\n" +"  <return_msg><![CDATA[OK]]></return_msg>\n" +"</xml>");// 解析微信返回的xml消息Map<String, String> map = WXPayUtil.xmlToMap(buffer.toString());String orderId = map.get("out_trade_no");/*第四步：使用goEasy通知前端支付成功后跳转*/// https://www.goeasy.io/cn/get-start.html [goeasy官网]GoEasy goEasy = new GoEasy("http://rest-hangzhou.goeasy.io","BC-deec2d7dc9e0461bb4b0c51e0b4bcc88");goEasy.publish(orderId, "ojbk");}}

2.show-pay.html

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head><meta charset="UTF-8"><title>支付页面</title>
</head>
<body><h1 style="color: red;">支付</h1><img th:src="@{'/wx/showQrcode?orderId='+${orderId}}" />
</body><!--[if lte IE 8]>//如果需要支持低版本的IE8及以下
<script type="text/javascript" src="https://cdn.goeasy.io/json2.js"></script>
<![endif]-->
<script type="text/javascript" src="https://cdn.goeasy.io/goeasy-1.0.11.js"></script>
<script type="text/javascript">var goEasy = new GoEasy({host: 'hangzhou.goeasy.io',//应用所在的区域地址，杭州：hangzhou.goeasy.io，新加坡：singapore.goeasy.ioappkey: "BC-deec2d7dc9e0461bb4b0c51e0b4bcc88",//替换为您的应用appkeyforceTLS: false, //如果需要使用HTTPS/WSS，请设置为true，默认为falseonConnected: function () {console.log('连接成功！')},onDisconnected: function () {console.log('连接断开！')},onConnectFailed: function (error) {console.log('连接失败或错误！')}});var orderId = '[[${orderId}]]';goEasy.subscribe({channel: orderId,//替换为您自己的channelonMessage: function (message) {console.log("Channel:" + message.channel + " content:" + message.content);location.href = '/wx/payOk?orderId='+orderId;}});</script></html>

3.pay-ok.html

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head><meta charset="UTF-8"><title>Title</title>
</head>
<body><h1 style="color: red;"><span th:text="${orderId}"></span>支付成功</h1>
</body>
</html>

4.项目依赖

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.2.2.RELEASE</version><relativePath/> <!-- lookup parent from repository --></parent><groupId>com.zzhua</groupId><artifactId>v-admin</artifactId><version>0.0.1-SNAPSHOT</version><name>v-admin</name><description>Demo project for Spring Boot</description><properties><java.version>1.8</java.version><zxing.version>3.4.0</zxing.version><project.build.sourceEncoding>utf-8</project.build.sourceEncoding><project.reporting.outputEncoding>utf-8</project.reporting.outputEncoding></properties><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-thymeleaf</artifactId></dependency><dependency><groupId>org.freemarker</groupId><artifactId>freemarker</artifactId><version>2.3.30</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-devtools</artifactId><scope>runtime</scope><optional>true</optional></dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><scope>runtime</scope></dependency><dependency><groupId>com.baomidou</groupId><artifactId>mybatis-plus-boot-starter</artifactId><version>3.3.2</version></dependency><dependency><groupId>com.baomidou</groupId><artifactId>mybatis-plus-generator</artifactId><version>3.3.2</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-configuration-processor</artifactId><optional>true</optional></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><optional>true</optional></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><version>2.2.2.RELEASE</version></dependency><dependency><groupId>com.google.zxing</groupId><artifactId>core</artifactId><version>${zxing.version}</version></dependency><dependency><groupId>com.google.zxing</groupId><artifactId>javase</artifactId><version>${zxing.version}</version></dependency><!--微信支付相关开始--><!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpclient --><dependency><groupId>org.apache.httpcomponents</groupId><artifactId>httpclient</artifactId><version>4.5.3</version></dependency><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-api</artifactId><version>1.7.21</version></dependency><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-simple</artifactId><version>1.7.21</version></dependency><!--微信支付相关结束--><!-- https://mvnrepository.com/artifact/cn.hutool/hutool-all --><dependency><groupId>cn.hutool</groupId><artifactId>hutool-all</artifactId><version>5.3.5</version></dependency><dependency><groupId>io.goeasy</groupId><artifactId>goeasy-sdk</artifactId><version>0.3.14</version></dependency></dependencies><licenses><license><name>The BSD 3-Clause License</name><url>https://opensource.org/licenses/BSD-3-Clause</url><distribution>repo</distribution></license></licenses><scm><url></url><connection></connection><developerConnection></developerConnection></scm><developers><developer><name>wxpay</name><email></email><url>https://pay.weixin.qq.com/wiki/doc/api/wxa/wxa_api.php?chapter=11_1</url></developer></developers><profiles><profile><id>release</id><distributionManagement><snapshotRepository><id>oss</id><url>https://oss.sonatype.org/content/repositories/snapshots/</url></snapshotRepository><repository><id>oss</id><url>https://oss.sonatype.org/service/local/staging/deploy/maven2/</url></repository></distributionManagement><build><plugins><!-- Source --><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-source-plugin</artifactId><version>3.0.1</version><executions><execution><phase>package</phase><goals><goal>jar-no-fork</goal></goals></execution></executions></plugin><!-- Javadoc --><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-javadoc-plugin</artifactId><version>2.10.4</version><executions><execution><phase>package</phase><goals><goal>jar</goal></goals></execution></executions></plugin><!-- Gpg Signature --><!--<plugin>--><!--<groupId>org.apache.maven.plugins</groupId>--><!--<artifactId>maven-gpg-plugin</artifactId>--><!--<version>1.6</version>--><!--<executions>--><!--<execution>--><!--<id>sign-artifacts</id>--><!--<phase>verify</phase>--><!--<goals>--><!--<goal>sign</goal>--><!--</goals>--><!--</execution>--><!--</executions>--><!--</plugin>--></plugins></build></profile></profiles><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build></project>

4.演示：

1.访问支付页面

2.支付成功后，浏览器自动跳转

微信支付的统一下单小demo相关推荐

浅析微信支付：统一下单接口
本文是[浅析微信支付]系列文章的第五篇,主要讲解如何调用统一下单接口生成预支付单及调起支付页面. 浅析微信支付系列已经更新四篇了哟-,没有看过的朋友们可以看一下哦. 浅析微信支付:微信公众号网页授权 ...
android下单代码,Android实现微信支付的统一下单
本文实例为大家分享了Android实现微信支付统一下单的具体代码,供大家参考,具体内容如下准备工作申请微信开发者账号,添加应用及申请开通微信支付功能,如查看开通流程统一下单的接口文档: 查看接 ...
微信统一下单 java_微信支付之统一下单--JAVA版
都说微信支付有些坑,都抱怨微信支付的文档太烂,一会APPId,一会商户id,还有appsecret,支付API秘钥让你傻傻分不清楚,还有这里大写那里小写,几种标准,让你眼花缭乱.没错,这就是很多技术团 ...
android下单代码,Android微信支付的”统一下单“接口如何调用
我现在已经将统一下单所需要的参数构建成了xml的内容格式,然后换成String输出. 然后微信的调用接口是这个:https://api.mch.weixin.qq.com.../** * 构造出xml ...
php 微信统一下单接口,微信JSAPI支付，统一下单接口
微信JSAPI支付,统一下单接口今天小编给大家分享一下微信支付的统一下单接口,其实微信官网上也有SDK和DEMO下载了,但是不太好理解,小编就自己整理一份容易理解的代码,看不懂官方的,就来看看小编这 ...
做微信h5支付的统一下单接口开发，虽然已经生成了mweb_url支付链接，但是访问时出现错误提示：‘商家参数格式有误，请联系商家解决’，但是检查h5支付提交的参数，都没有错误。微信h5支付开发错误
做微信h5支付的统一下单接口开发,虽然已经生成了mweb_url支付链接,但是访问时出现错误提示:'商家参数格式有误,请联系商家解决',但是检查h5支付提交的参数,都没有错误. 后面看到官方文档, 说 ...
浅析微信支付：微信支付简单介绍（小程序、公众号、App、H5）
本文是[浅析微信支付]系列文章的第二篇,主要讲解一下普通商户接入的支付方式以及其中的不同之处. 上篇文章讲了本系列的大纲,没有看过的朋友们可以看一下. 浅析微信支付:前篇大纲微信支付是集成在微信客户 ...
微信小程序——（2）智慧商圈、微信支付快速积分到账小程序开发指引
小伙伴们,小编在上一期中有讲到了微信小程序智慧商圈.微信支付快速积分到账小程序接入前准备,那么这期咱们来看看如何开发,由于小编是前端开发,后端不熟,所以这里就直接给小伙伴们抛一个官方的开发指引了:智慧 ...
本文是对优雅草蜻蜓C影视便捷追剧小程序微信支付配置教程-大部分小程序支付通用,从微信配置到后台的详解，其他小程序系统均可参考
本文是对优雅草蜻蜓C影视便捷追剧小程序微信支付配置教程-大部分小程序支付通用,从微信配置到后台的详解,其他小程序系统均可参考微信支付配置 1,下载工具编辑切换为居中添加图片注释,不超过 14 ...