教你用Java在个人电脑上实现微信扫码支付
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2022-04-05 14:08:59
java实现pc微信扫码支付做一个电商网站支付功能必不可少，那我们今天就来盘一盘微信支付。业务流程：支付服务开发前提准备：1.sdk下载：sdk2.利用外网穿透，获得一个外网域名：natapp3.ap...
java实现pc微信扫码支付
做一个电商网站支付功能必不可少，那我们今天就来盘一盘微信支付。
业务流程：
支付服务开发前提准备：
1.sdk下载：sdk
2.利用外网穿透，获得一个外网域名：natapp
3.appid，商户id，密钥注：上面三个参数需要自己申请
开发阶段：
导入依赖：
<!--eureka的客户端依赖-->
<dependency>
<groupid>org.springframework.cloud</groupid>
<artifactid>spring-cloud-starter-netflix-eureka-client</artifactid>
</dependency>
<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>
<!-- http客户端 -->
<dependency>
<groupid>org.apache.httpcomponents</groupid>
<artifactid>httpclient</artifactid>
<version>4.5.3</version>
</dependency>
<!-- 二维码 -->
<dependency>
<groupid>com.google.zxing</groupid>
<artifactid>core</artifactid>
<version>3.3.3</version>
</dependency>
<!-- 生成二维码 -->
<dependency>
<groupid>com.google.zxing</groupid>
<artifactid>javase</artifactid>
<version>3.3.3</version>
</dependency>
<!--websocket 服务器主动发送请求给websocket-->
<dependency>
<groupid>org.springframework.boot</groupid>
<artifactid>spring-boot-starter-websocket</artifactid>
</dependency>
微信支付配置类
/**
* 微信支付配置
*/
public class mywxconfig extends wxpayconfig {
//账户的appid
@override
public string getappid() {
return "wx307113892f15a42e";
}
//商户id
@override
public string getmchid() {
return "1508236581";
}
//秘钥
@override
public string getkey() {
return "hjd7shghd6djgdgfg5778gffhghghgfg";
}
@override
public inputstream getcertstream() {
return null;
}
@override
public iwxpaydomain getwxpaydomain() {
return new wxpaydomain();
}
class wxpaydomain implements iwxpaydomain{
@override
public void report(string domain, long elapsedtimemillis, exception ex) {
}
@override
public domaininfo getdomain(wxpayconfig config) {
return new domaininfo("api.mch.weixin.qq.com",true);
}
}
}
websocket配置类：
package com.cloud.config;
import org.springframework.context.annotation.bean;
import org.springframework.context.annotation.configuration;
import org.springframework.web.socket.server.standard.serverendpointexporter;
@configuration
public class websocketconfig {
@bean
public serverendpointexporter serverendpointexporter(){
return new serverendpointexporter();
}
}
wensocket工具类：
package com.cloud.config;
import org.springframework.stereotype.component;
import javax.websocket.onclose;
import javax.websocket.onmessage;
import javax.websocket.onopen;
import javax.websocket.session;
import javax.websocket.server.serverendpoint;
import java.io.ioexception;
/**
* websocket工具类
* serverendpoint配置websocket的名称，和前台页面对应
*/
@serverendpoint(value = "/eshop")
@component
public class websocketutils {
//websocket的对话对象
private static session session = null;
//建立和前台页面连接后的回调方法
@onopen
public void onopen(session session){
system.out.println("建立连接"+session);
//给连接赋值
websocketutils.session = session;
}
@onmessage
public void onmessage(string message, session session){
system.out.println("收到前台消息：" + message);
}
@onclose
public void onclose(session session) throws ioexception {
system.out.println("连接关闭");
session.close();
}
/**
* 向前台发消息
* @param message
* @throws ioexception
*/
public static void sendmessage(string message) throws ioexception {
system.out.println("发送消息：" + message);
if( websocketutils.session != null) {
websocketutils.session.getbasicremote().sendtext(message);
}
}
}
service：
package com.cloud.service;
import com.cloud.utils.mywxconfig;
import com.cloud.utils.wxpay;
import com.cloud.utils.wxpayutil;
import com.google.zxing.barcodeformat;
import com.google.zxing.encodehinttype;
import com.google.zxing.multiformatwriter;
import com.google.zxing.client.j2se.matrixtoimagewriter;
import com.google.zxing.common.bitmatrix;
import com.google.zxing.qrcode.decoder.errorcorrectionlevel;
import org.springframework.stereotype.service;
import javax.servlet.http.httpservletresponse;
import java.util.hashmap;
import java.util.map;
import java.util.uuid;
/**
* 微信支付service
*/
@service
public class payservice {
/**
* 下单
* @param goodsid 商品id
* @param price 价格
* @return 二维码的url
*/
public map<string, string> makeorder(string goodsid, long price) throws exception {
//创建支付对象
mywxconfig config = new mywxconfig();
wxpay wxpay = new wxpay(config);
map<string,string> map = new hashmap<>();
map.put("appid",config.getappid());
map.put("mch_id",config.getmchid());
map.put("device_info","web");
map.put("nonce_str", uuid.randomuuid().tostring().replace("-",""));
map.put("body","商城购物");
string tradeno = uuid.randomuuid().tostring().replace("-", "");
map.put("out_trade_no", tradeno);
map.put("fee_type","cny");
map.put("total_fee",string.valueof(price));
map.put("notify_url","http://68dhbz.natappfree.cc/pay/rollback"); //微信对商户后台的回调接口
map.put("trade_type","native");
map.put("product_id",goodsid);
//执行统一下单
map<string, string> result = wxpay.unifiedorder(map);
system.out.println("result:"+result);
//保存订单号
result.put("trade_no",tradeno);
return result;
}
/**
* 生成二维码
* @param url
* @param response
*/
public void makeqrcode(string url, httpservletresponse response){
//通过支付链接生成二维码
hashmap<encodehinttype, object> hints = new hashmap<>();
hints.put(encodehinttype.character_set, "utf-8");
hints.put(encodehinttype.error_correction, errorcorrectionlevel.m);
hints.put(encodehinttype.margin, 2);
try {
bitmatrix bitmatrix = new multiformatwriter().encode(url, barcodeformat.qr_code, 200, 200, hints);
matrixtoimagewriter.writetostream(bitmatrix, "png", response.getoutputstream());
system.out.println("创建二维码完成");
} catch (exception e) {
e.printstacktrace();
}
}
/**
* 检查订单状态
* @param tradeno
* @return
* @throws exception
*/
public string checkorder(string tradeno) throws exception {
mywxconfig config = new mywxconfig();
string str =
"<xml>"+
"<appid>"+config.getappid()+"</appid>"+
"<mch_id>"+config.getmchid()+"</mch_id>"+
"<nonce_str>"+uuid.randomuuid().tostring().replace("-","")+"</nonce_str>"+
"<out_trade_no>"+tradeno+"</out_trade_no>"+
"<sign>5e00f9f72173c9449f802411e36208734b8138870ed3f66d8e2821d55b317078</sign>"+
"</xml>";
wxpay pay = new wxpay(config);
map<string,string> map = wxpayutil.xmltomap(str);
map<string, string> map2 = pay.orderquery(map);
string state = map2.get("trade_state");
system.out.println("订单"+tradeno+",状态"+state);
return state;
}
}
controller：
package com.cloud.controller;
import com.cloud.config.websocketutils;
import com.cloud.service.payservice;
import com.cloud.utils.wxpayutil;
import org.apache.tomcat.util.http.fileupload.util.streams;
import org.springframework.beans.factory.annotation.autowired;
import org.springframework.util.stringutils;
import org.springframework.web.bind.annotation.*;
import javax.servlet.http.httpservletrequest;
import javax.servlet.http.httpservletresponse;
import java.util.map;
/**
* @author yanglihu
*/
@restcontroller
@requestmapping("/pay")
public class paycontroller {
@autowired
private payservice payservice;
private string tradeno;
/**
* 二维码生成
*/
@getmapping("/code")
public void qrcode(@requestparam("goodsid")string goodsid,
@requestparam("price")long price,
httpservletresponse response){
try {
map<string,string> map = payservice.makeorder(goodsid, price);
payservice.makeqrcode(map.get("code_url"),response);
system.out.println("生成订单号：" + map.get("trade_no"));
tradeno = map.get("trade_no");
} catch (exception e) {
e.printstacktrace();
}
}
/**
* 支付后通知
*/
@postmapping("/rollback")
public void notify(httpservletrequest request, httpservletresponse response) throws exception {
//获得微信传来的xml字符串
string str = streams.asstring(request.getinputstream());
//将字符串xml转换为map
map<string, string> map = wxpayutil.xmltomap(str);
//读取订单号
string no = map.get("out_trade_no");
//模拟修改商户后台数据库订单状态
system.out.println("更新订单状态:"+no);
//给微信发送消息
response.getwriter().println("<xml>\n" +
" <return_code><![cdata[success]]></return_code>\n" +
" <return_msg><![cdata[ok]]></return_msg>\n" +
" <appid><![cdata["+map.get("appid")+"]]></appid>\n" +
" <mch_id><![cdata["+map.get("mch_id")+"]]></mch_id>\n" +
" <nonce_str><![cdata["+map.get("nonce_str")+"]]></nonce_str>\n" +
" <openid><![cdata["+map.get("openid")+"]]></openid>\n" +
" <sign><![cdata["+map.get("sign")+"]]></sign>\n" +
" <result_code><![cdata[success]]></result_code>\n" +
" <prepay_id><![cdata["+map.get("prepay_id")+"]]></prepay_id>\n" +
" <trade_type><![cdata[native]]></trade_type>\n" +
"</xml>");
websocketutils.sendmessage("ok");
}
/**
* 检查订单状态
*/
@postmapping("checkorder")
public string checkorder() throws exception {
system.out.println("trade_no:" + tradeno);
if(stringutils.isempty(tradeno)){
return null;
}
string success = payservice.checkorder(tradeno);
system.out.println("check:" + success);
return success;
}
}
支付页面：
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="x-ua-compatible" content="ie=9; ie=8; ie=7; ie=edge">
<meta http-equiv="x-ua-compatible" content="ie=emulateie7" />
<title>乐优商城--微信支付页</title>
<link rel="icon" href="/assets/img/favicon.ico" rel="external nofollow" rel="external nofollow" >
<link rel="stylesheet" type="text/css" href="css/webbase.css" rel="external nofollow" rel="external nofollow" />
<link rel="stylesheet" type="text/css" href="css/pages-weixinpay.css" rel="external nofollow" />
</head>
<body>
<!--页面顶部白条条，由js动态加载-->
<script type="text/javascript" src="plugins/jquery/jquery.min.js"></script>
<div class="top"></div>
<script type="text/javascript">$(".top").load("shortcut.html");</script>
<div class="checkout py-container pay">
<div class="checkout-steps">
<div class="fl weixin">微信支付</div>
<div class="fl sao">
<p class="red">二维码已过期，刷新页面重新获取二维码。</p>
<div class="fl code">
<img src="http://api.eshop.com/pay/code?goodsid=11&price=1" alt="">
<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 class="fl phone">
</div>
</div>
<div class="clearfix"></div>
<p><a href="pay.html" rel="external nofollow" target="_blank">> 其他支付方式</a></p>
</div>
</div>
</div>
<script type="text/javascript" src="js/plugins/jquery/jquery.min.js"></script>
<script type="text/javascript" src="js/plugins/jquery.easing/jquery.easing.min.js"></script>
<script type="text/javascript" src="js/plugins/sui/sui.min.js"></script>
<script type="text/javascript" src="js/widget/nav.js"></script>
<script type="text/javascript">
$(function(){
$("ul.paytype li").click(function(){
$(this).css("border","2px solid #e4393c").siblings().css("border-color","#ddd");
})
})
</script>
<script>
var websocket = null;
//判断当前浏览器是否支持websocket
if('websocket' in window){
websocket = new websocket("ws://localhost:8888/eshop");
}
else{
alert('not support websocket')
}
//接收到消息的回调方法
websocket.onmessage = function(event){
console.log(event.data);
if(event.data == "ok"){
location.href = "paysuccess.html";
}
}
</script>
</body>
</html>
成功页面：
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="x-ua-compatible" content="ie=9; ie=8; ie=7; ie=edge">
<meta http-equiv="x-ua-compatible" content="ie=emulateie7" />
<title>乐优商城--支付页-成功</title>
<link rel="icon" href="/assets/img/favicon.ico" rel="external nofollow" rel="external nofollow" >
<link rel="stylesheet" type="text/css" href="css/webbase.css" rel="external nofollow" rel="external nofollow" />
<link rel="stylesheet" type="text/css" href="css/pages-paysuccess.css" rel="external nofollow" />
</head>
<body>
<!--head-->
<!--页面顶部白条条，由js动态加载-->
<script type="text/javascript" src="plugins/jquery/jquery.min.js"></script>
<div class="top"></div>
<script type="text/javascript">$(".top").load("shortcut.html");</script>
<div class="cart py-container">
<!--主内容-->
<div class="paysuccess">
<div class="success">
<h3><img src="img/_/right.png" width="48" height="48"> 恭喜您，支付成功啦！</h3>
<div class="paydetail">
<p>支付方式：微信支付</p>
<p>支付金额：￥1006.00元</p>
<p class="button"><a href="home-index.html" rel="external nofollow" class="sui-btn btn-xlarge btn-danger">查看订单</a> <a href="index.html" rel="external nofollow" class="sui-btn btn-xlarge ">继续购物</a></p>
</div>
</div>
</div>
</div>
<script type="text/javascript" src="js/plugins/jquery/jquery.min.js"></script>
<script type="text/javascript" src="js/plugins/jquery.easing/jquery.easing.min.js"></script>
<script type="text/javascript" src="js/plugins/sui/sui.min.js"></script>
<script type="text/javascript" src="components/ui-modules/nav/nav-portal-top.js"></script>
</body>
</html>
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