微信支付的简单实现案例(Java)
上手一个小案例,实现Java版本的微信支付。
第一步: 从微信平台下载微信支付demo。
链接: 到官方下载 这里我们下载Java版的。
注意微信提供的demo是myclipse版本的。
我们要用myclipse打开。
第二步:把demo导入到myclipse中去。
ps:过程中爆红的可以选择
(1)硬着头皮跟着做下去。
(2)拉到文章最后导入jar包。
第三步:配置代码。
(1) MyConfig.java
package com.github.wxpay.sdk;
import com.github.wxpay.sdk.WXPayConfig;
import java.io.*;
public class MyConfig extends WXPayConfig{
private byte[] certData;
public MyConfig() throws Exception {
//String certPath = "d:/tomcat/ssqc/webapps/wxpay-sdk/cert/apiclient_cert.p12";
/*String certPath = "C:/Tomcat 8.5/webapps/wxpay-sdk/cert/apiclient_cert.p12";
File file = new File(certPath);
InputStream certStream = new FileInputStream(file);
this.certData = new byte[(int) file.length()];
certStream.read(this.certData);
certStream.close();*/
//上面六行注释,要修改WXPay.java,注释掉63行
}
public String getAppID() {
return "wx8397f8696b538317";
}
public String getMchID() {
return "1473426802";
}
public String getKey() {
return "T6m9iK73b0kn9g5v426MKfHQH7X8rKwb";
}
public InputStream getCertStream() {
ByteArrayInputStream certBis = new ByteArrayInputStream(this.certData);
return certBis;
}
public int getHttpConnectTimeoutMs() {
return 8000;
}
public int getHttpReadTimeoutMs() {
return 10000;
}
// @Override
// IWXPayDomain getWXPayDomain() {
// // TODO Auto-generated method stub
// return null;
// }
//README.MD漏了这个类型:
public IWXPayDomain getWXPayDomain() {
// 这个方法需要这样实现, 否则无法正常初始化WXPay
IWXPayDomain iwxPayDomain = new IWXPayDomain() {
public void report(String domain, long elapsedTimeMillis, Exception ex) {
}
public DomainInfo getDomain(WXPayConfig config) {
return new IWXPayDomain.DomainInfo(WXPayConstants.DOMAIN_API, true);
}
};
return iwxPayDomain;
}//public IWXPayDomain getWXPayDomain
}//public class MyConfig extends WXPayConfig
(2) WXPayExample.java
// A code block
var foo = 'bar';package com.github.wxpay.sdk;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.Map;
//import com.google.zxing.*;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.common.BitMatrix;
public class WXPayExample {
public static void main(String[] args) throws Exception {
MyConfig config = new MyConfig();
WXPay wxpay = new WXPay(config);
Map<String, String> data = new HashMap<String, String>();
data.put("body", "QQ会员充值");
data.put("out_trade_no", "2020113010595900000012");
data.put("device_info", "");
data.put("fee_type", "CNY");
data.put("total_fee", "1");
data.put("spbill_create_ip", "123.12.12.123");
data.put("notify_url", "http://www.gzchenlijun.com/notify.php");
data.put("trade_type", "NATIVE"); // 此处指定为扫码支付//APP
data.put("product_id", "12");
try {
Map<String, String> resp = wxpay.unifiedOrder(data);
System.out.println(resp);
} catch (Exception e) {
e.printStackTrace();
}
}//public static void main
public void dopay(String order_id,String price,String jdpath) throws Exception {
MyConfig config = new MyConfig();
WXPay wxpay = new WXPay(config);
Map<String, String> data = new HashMap<String, String>();
data.put("body", "广州软件研究所");
data.put("out_trade_no", order_id);
data.put("device_info", "");
data.put("fee_type", "CNY");
data.put("total_fee", price);
data.put("spbill_create_ip", "123.12.12.123");
data.put("notify_url", "http://www.gzchenlijun.com/notify.php");
data.put("trade_type", "NATIVE"); // 此处指定为扫码支付
data.put("product_id", "12");
try {
//发起支付
Map<String, String> resp = wxpay.unifiedOrder(data);
System.out.println(resp);
System.out.println("jdpath2="+jdpath);
//获取二维码URL
String code_url = resp.get("code_url");
//根据url生成二维码
String text = code_url;
int width = 300;
int height = 300;
//二维码的图片格式
String format = "gif";
Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();
//内容所使用编码
hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
BitMatrix bitMatrix = new MultiFormatWriter().encode(text, BarcodeFormat.QR_CODE, width, height, hints);
//生成二维码
//File outputFile = new File("D:/Tomcat 7.0/webapps/wxpay-sdk"+"/img/"+"/"+order_id+".gif");
System.out.println("jdpath="+jdpath);
File outputFile = new File(jdpath+"/img/"+"/"+order_id+".gif");
//二维码图片放置的目录jdpath是首页index.jsp生成的
if(!outputFile.exists()){
QRUtil.writeToFile(bitMatrix, format, outputFile);
}//if(!outputFile.exists
} catch (Exception e) {
e.printStackTrace();
}// try
}// public Map<String, String> dopay
///订单查询
public String chaxun(String order_id) throws Exception {
MyConfig config = new MyConfig();
WXPay wxpay = new WXPay(config);
Map<String, String> data = new HashMap<String, String>();
data.put("out_trade_no", order_id);
String trade_state = "";
try {
Map<String, String> resp = wxpay.orderQuery(data);
trade_state = resp.get("trade_state").toString();
//System.out.println(resp);
} catch (Exception e) {
e.printStackTrace();
}
return trade_state;
}
public static void getTXT() throws Exception {
String filePath = "C:\\a.txt";
String content="SUCCESS";
FileWriter fwriter = null;
try {
// true表示不覆盖原来的内容,而是加到文件的后面。若要覆盖原来的内容,直接省略这个参数就好
fwriter = new FileWriter(filePath);
fwriter.write(content);
} catch (IOException ex) {
ex.printStackTrace();
} finally {
try {
fwriter.flush();
fwriter.close();
} catch (IOException ex) {
ex.printStackTrace();
}
}
//return content;
}
}//public class WXPayExample
(3) 在src/main/java的代码窗口添加一个新文件MatrixToImageWriter.java
package com.github.wxpay.sdk;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.Hashtable;
import javax.imageio.ImageIO;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.geom.AffineTransform;
import java.awt.image.AffineTransformOp;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.Map;
/**
* 生成二维码图片
*/
public final class MatrixToImageWriter {
/**
* 生成二维码图片文件
* @param content 二维码图片中所嵌入的内容
* @param format 图片文件格式(后缀名)
* @param imgPath 二维码图片生成的位置
* @param logoPath logo图片的路径
* @param width 二维码图片的宽
* @param height 二维码图片的高
* @return
* @return boolean 生成二维码成功返回true
* @throws WriterException
* @throws IOException
*/
public static BufferedImage makeMatrixImg(String content, String logoPath,int width,int height) throws WriterException, IOException{
/*
* 1.将内容写入矩阵
*/
// 设置矩阵所使用的编码格式
Hashtable<EncodeHintType,String> hints = new Hashtable<EncodeHintType, String>() ;
hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
// 初始化矩阵
BitMatrix bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, height, hints);
// 将矩阵图形化
BufferedImage matrixImage = toBufferredImage(bitMatrix);
/*
* 2.往即将生成的‘二维码图+logo’图片中载入logo
*/
// 2.1 读取logo图片
BufferedImage logoImage = ImageIO.read(new File(logoPath));
/*
* 3。使用二维码图形创建图形工具
*/
Graphics2D g2d = matrixImage.createGraphics() ;
/*
* 4. 画出中间含有logo的二维码图形对象
*/
int posW = (matrixImage.getWidth()-logoImage.getWidth())/2 ;
int posH = (matrixImage.getHeight()-logoImage.getHeight())/2 ;
g2d.drawImage(logoImage, posW, posH, null);
g2d.dispose();
logoImage.flush();
/*
* 5. 将图片读出到文件中
*/
//boolean writed = ImageIO.write(matrixImage, format, os) ;
return matrixImage;
}
private static BufferedImage toBufferredImage(BitMatrix bitMatrix){
int width = bitMatrix.getWidth();
int height = bitMatrix.getHeight();
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
for (int i=0; i<width; i++) {
for(int j=0; j<height; j++){
image.setRGB(i, j, bitMatrix.get(i, j)?0XFF000000:0XFFFFFF);
}
}
return image;
}
}
(4) 在WebRoot下添加一个新文件index.jsp,代码如下
<%@ page pageEncoding="utf-8" contentType="text/html; charset=utf-8" language="java" import="java.sql.*,java.util.*,java.text.*" errorPage="" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>电子商场</title>
</head>
<style type="text/css">
<!--
body {
background-color: #99CCFF;
}
-->
</style>
<BODY>
<font color="#FFFFFF">
<center>
<%
String user = "guest";顾客注册账号
Connection con;
Class.forName("com.mysql.jdbc.Driver");
con = DriverManager.getConnection("jdbc:mysql://172.16.252.48:3306/goods?useUnicode=true&characterEncoding=utf-8","root","chenlijun");
Statement sql;
ResultSet rs;
try
{
request.setCharacterEncoding("utf-8");
sql=con.createStatement();
rs=sql.executeQuery("SELECT * FROM goods.goods");
out.print("<Table Border style='font-size: 10pt'>");
out.print("<TR><td colspan=5 align=center height='40'>电子商场</td></tr>");
out.print("<TR><td colspan=5 align=center height='40'><a href='addgoods.html' target='_self'>添加商品</a></td></tr>");
out.print("<TR>");
out.print("<Td width='45%' height='30'>"+"标题");
out.print("<Td width='5%' height='30'>"+"价格");
out.print("<Td width='25%' colspan=2 height='30' align='center'>"+"操作");
out.print("</TR>");
while(rs.next())
{ out.print("<TR>");
out.print("<TD height='30'>"+rs.getString("title1")+"</TD>");
out.print("<TD height='30'>"+rs.getString("price")+"</TD>");
String id=rs.getString("id");//商品的ID
String order_id=(String)(new SimpleDateFormat("yyyyMMdd").format(Calendar.getInstance().getTime()));
int rmd=(int)(Math.floor(Math.random()*10000000));
order_id=order_id+rmd;
//order_id = "202012211261053";//20201221647394
//order_id = "20201221647394";202012226830336
//order_id = "202012228246206";
String price1 = (String)rs.getString("price");
float price2= Float.parseFloat(price1)*100;//字符串转float;
int price= (int)price2;
String title1 = rs.getString("price");//最好不要传输中文,传id过去,再读取商品的title
String slt = rs.getString("slt");
out.print("<TD align='center'><a href='addorder.jsp?id="+id+"&user="+user+"&order_id="+order_id+"&price="+price+"&title1="+title1+"&slt="+slt+"'>我要购买</a></TD>");
out.print("</TR>") ;
}
out.print("</Table>");
con.close();
}
catch(SQLException e1)
{
out.print("SQL异常!!!!");
}
%>
</center>
</BODY>
</HTML>
(5) 在WebRoot下添加一个新文件addorder.jsp,代码如下:
<%@ page contentType="text/html; charset=utf-8" language="java" import="java.sql.*,java.util.*,java.text.*" errorPage="" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>去支付中心</title>
<script src="/wxpay-sdk/js/jquery-3.5.1.min.js"></script>
<script>
function chenlijun(){
document.form1.submit();
return true;
}
</script>
</head>
<body onload="return chenlijun();">
<%
//从首页index.jsp获取订单编号,商品价格,商品的ID号;
String order_id = request.getParameter("order_id");
String price = request.getParameter("price");
String real_price = price;
String order_info = request.getParameter("order_info");
String pay_type = "1";//1:微信支付,2:支付宝支付
String pay_time=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(Calendar.getInstance().getTime());
String status = null;
String id = request.getParameter("id");
String user = request.getParameter("user");
Connection con=null;
try
{
Class.forName("com.mysql.jdbc.Driver");
con = DriverManager.getConnection("jdbc:mysql://172.16.252.48:3306/goods","root","chenlijun");
Statement stat;
stat=con.createStatement();
//检查是否已经添加
Statement sql1;
ResultSet rs;
sql1=con.createStatement();
rs=sql1.executeQuery("SELECT * FROM goods.order1 where order_id="+order_id);
int row = 0;
while(rs.next()){
row= rs.getRow();
}
if(row == 0){
String sql2="insert into order1(order_id,price,real_price,order_info,pay_type,pay_time,status,goodsid,user) values('"+order_id+"','"+price+"','"+real_price+"','"+order_info+"','"+pay_type+"','"+pay_time+"','"+status+"','"+id+"','"+user+"')";
int s=stat.executeUpdate(sql2);
}
}
catch(Exception e){
out.println(e);
}
con.close();
%>
<!-- 下面提交表单的目的:让价格不出现在地址栏,避免修改价格 -->
<form name="form1" method="post" action="/wxpay-sdk/pay.jsp">
<input type="hidden" name="order_id" value="<%=order_id%>" />
<input type="hidden" name="price" value="<%=price%>" />
<input type="hidden" name="user" value="<%=user%>" />
</form>
</body>
</html>
(6) 在WebRoot下添加一个新文件addorder2.jsp,代码如下:
<%@ page pageEncoding="GBK" contentType="text/html; charset=GBK" language="java" import="java.sql.*" errorPage="" %>
<%@ page import="java.sql.*" %>
<%
request.setCharacterEncoding("GBK");
String title1=request.getParameter("title1");
String price=request.getParameter("price");
String content1=request.getParameter("content1");
String slt=request.getParameter("slt");
Connection con=null;
try
{
request.setCharacterEncoding("GBK");
Class.forName("com.mysql.jdbc.Driver");
con = DriverManager.getConnection("jdbc:mysql://172.16.252.48:3306/goods?useUnicode=true&characterEncoding=GBK","root","chenlijun");
Statement sql;
sql=con.createStatement();
String sql2="insert into goods(title1,price,content1,slt) values('"+title1+"','"+price+"','"+content1+"','"+slt+"')";
//out.print(sql2);
int s=sql.executeUpdate(sql2);
}
catch(Exception e){
out.println(e);
}
%><title>添加商品到数据库</title>
添加商品到数据库<br />
<a href="index.jsp">??</a>
(7)在WebRoot下添加一个新文件pay.jsp,代码如下:
<%@ page language="java" import="java.util.*,com.github.wxpay.sdk.*" pageEncoding="utf-8" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<%@ page import="java.text.*"%>
<%@page import="java.sql.*"%>
<%@ page import="java.io.OutputStream"%>
<%@ page import="java.io.*"%>
<%//@ page import="org.apache.commons.io.IOUtils"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=path%>">
<title>微信支付</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
<script src="/wxpay-sdk/js/jquery-3.5.1.min.js"></script>
</head>
<body>
<%
//下面是获取项目或网站的绝对地址,以便把微信支付的二维码放在此目录下
String realpath = application.getRealPath("/")+"img/";
if (!(new java.io.File(realpath).isDirectory())) //如果文件夹不存在
{
new java.io.File(realpath).mkdir(); //不存在 文件夹,则建立此文件夹
}
String jdpath = getServletContext().getRealPath("/");//获取网站的绝对路径,包括虚拟目录
jdpath = jdpath.replaceAll("\\\\", "\\/");//"\"换成"/"
%>
<br>
<div align="center" style="font-size:30px;color:#ff0000">微信支付</div>
<%
String order_id = request.getParameter("order_id");
String price = request.getParameter("price");
String user = request.getParameter("user");
String id = request.getParameter("id");
WXPayExample wxpay = new WXPayExample();//类的实例化对象wxpay;
wxpay.dopay(order_id,price,jdpath);//wxpay对象执行微信支付,出现二维码;
%>
<!-- 下面是显示二维码,二维码图片的文件名称,使用订单编号.gif -->
<p align="center"><img src="<%=basePath%>/img/<%=order_id%>.gif"></p>
<!-- <p align="center"><img src="<%=basePath%>/img/2020111254974.gif"></p> -->
<p align="center">二维码过期还剩:<div style="color:red" id = "time" align="center"></div></p>
<p>
<script type="text/javascript">
$(document).ready(function () {
var timeobj1 = window.setInterval("tijiao()", 6000000); //每隔6秒钟执行一次; 6000
});
function tijiao() {
$.post("<%=path%>/chaxun.jsp",{
order_id:<%=order_id%>
},
//上面是以POST方式向chaxun.jsp提交订单编号order_id的值,可以提交多个键值对;
function(data,status){
//alert("数据: \n" + data + "\n状态: " + status);
//data数据是chaxun.jsp中的所有超文本标记内容;
//status是向chaxun.jsp提交后,返回的状态,如果chaxun.jsp存在,能打开,status就为success;
data = data.replace(/\s/g,"");
//上面是去年所有的空格
var data1 = data.replace(/<\/?.+?>/g,"");
//上面是去掉hmtl
var data2 = data1.replace(/ /g,"");//去掉hmtl
var datalen = data2.length;
//alert("data2="+data2);
var qcsuccess = data2.substring(datalen-7,datalen);//取出"SUCCESS"或取出";FAIL"
//alert("qcsuccess="+qcsuccess);
if(qcsuccess == "SUCCESS"){
//alert("qcsuccess=SUCCESS");
document.write("<iframe src='<%=path%>/redirect.jsp?order_id=<%=order_id%>&user=<%=user%>&id=<%=id%>' rel='nofollow' scrolling='no' frameborder='0' width='100%' height='1000'></iframe>");
}else{
//alert("qcsuccess=FAIL");
}//if(qcsuccess = "SUCCESS")
}//function(data,status)
);//$(document).ready(
}// $(document).ready(function () {
</script>
<script>
var times = 5 * 60;//剩余时间,单位秒
var timeDiv = document.getElementById("time");
var timeObj2 = null;
function timer(){
if(times == 0){
//document.form1.form1.submit();
window.clearInterval(timeObj1);
window.clearInterval(timeObj2);
document.write("<iframe src='<%=path%>/index.jsp' rel='nofollow' scrolling='no' frameborder='0' width='100%' height='1000'></iframe>");
return;
}
var t = Math.floor(times/60) +"分"+times%60+"秒"
timeDiv.innerHTML = t;
times --;
}
timeObj2 = window.setInterval(timer,1000);
</script>
</p>
</body>
</html>
(8)在WebRoot下添加jquery-3.5.1.min.js
最后
代码编写完成,选择Tomcat运行,进行测试:http://localhost:8080/wxpay
结果:
点击我要购买,调起支付界面
ps:整个过程中会涉及到很多jar包,爆红找不到的可以自行百度下载。
以下是我的整个工程目录和涉及到的其他jar包:
Webroot下: