WeChat-Zahlungen sind zu einer unverzichtbaren Zahlungsmethode im Leben geworden. In diesem Artikel werden hauptsächlich die Zahlungen über öffentliche Konten und die Scan-Code-Zahlung von Java WeChat vorgestellt.
WeChat-Zahlungen werden immer beliebter, und viele Produkte sind mit dem Trick auf den Markt gekommen, schnell auf WeChat-Zahlungen zugreifen zu können. Der Komfort führt jedoch auch dazu, dass wir uns bei der Abwicklung auf Dritte verlassen Die Fähigkeit, unabhängig zu denken, dieses Mal habe ich vor, die WeChat-Zahlung zu teilen, die ich zuvor entwickelt habe.
1. Offizielle H5-Kontozahlung
Wichtige Punkte: OpenId und einheitliche Bestellung korrekt erhaltenSchnittstelle, Zahlungsergebnisbenachrichtigungen korrekt verarbeiten und richtig konfigurieren Zahlungsautorisierungsverzeichnis
Die Zahlungsmethode von H5 ist eine relativ weit verbreitete Methode. Diese Zahlungsmethode wird hauptsächlich für das benutzerdefinierte Menü-Webseite in WeChat verwendet und basiert auf der Installation auf dem Mobiltelefon. Nur höhere Versionen von WeChat unterstützen die WeChat-Zahlung. Bitte beachten Sie die Anweisungen ist einfacher zu schreiben
2 Schreiben Sie ein Servlet, um den Code über Oauth zu erhalten<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>微信支付样例</title> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> </head> <body> <form action="oauthServlet" method="POST"> 订单号:<input type="text" name="orderNo" /> <input type="submit" value="H5支付"/> </form> </br></br> <form action="scanCodePayServlet?flag=createCode" method="POST"> 订单号:<input type="text" name="orderNo" /> <input type="submit" value="扫码支付"/> </form> </body> </html>
package com.debug.weixin.servlet; import java.io.IOException; import java.io.PrintWriter; import javax.servlet.RequestDispatcher; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import com.debug.weixin.util.CommonUtil; import com.debug.weixin.util.ServerConfig; public class OauthServlet extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { this.doPost(request, response); } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String orderNo=request.getParameter("orderNo"); //调用微信Oauth2.0获取openid String redirectURL=ServerConfig.SERVERDOMAIN+"/BasicWeixin/payServletForH5?orderNo="+orderNo; String redirectURI=""; try { redirectURI=CommonUtil.initOpenId(redirectURL); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } //System.out.println(redirectURI); //RequestDispatcher dis= request.getRequestDispatcher(redirectURI); //dis.forward(request, response); response.sendRedirect(redirectURI); } }
package com.debug.weixin.servlet; import java.io.IOException; import java.io.PrintWriter; import java.util.SortedMap; import java.util.TreeMap; import javax.servlet.RequestDispatcher; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import com.debug.weixin.pojo.WeixinOauth2Token; import com.debug.weixin.pojo.WeixinQRCode; import com.debug.weixin.util.AdvancedUtil; import com.debug.weixin.util.CommonUtil; import com.debug.weixin.util.ConfigUtil; import com.debug.weixin.util.PayCommonUtil; public class PayServletForH5 extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { this.doPost(request, response); } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String orderNo=request.getParameter("orderNo"); String code=request.getParameter("code"); //获取AccessToken WeixinOauth2Token token=AdvancedUtil.getOauth2AccessToken(ConfigUtil.APPID, ConfigUtil.APP_SECRECT, code); String openId=token.getOpenId(); //调用微信统一支付接口 SortedMap<Object, Object> parameters = new TreeMap<Object, Object>(); parameters.put("appid", ConfigUtil.APPID); parameters.put("mch_id", ConfigUtil.MCH_ID); parameters.put("device_info", "1000"); parameters.put("body", "我的测试订单"); parameters.put("nonce_str", PayCommonUtil.CreateNoncestr()); parameters.put("out_trade_no", orderNo); //parameters.put("total_fee", String.valueOf(total)); parameters.put("total_fee", "1"); parameters.put("spbill_create_ip", request.getRemoteAddr()); parameters.put("notify_url", ConfigUtil.NOTIFY_URL); parameters.put("trade_type", "JSAPI"); parameters.put("openid", openId); String sign = PayCommonUtil.createSign("UTF-8", parameters); parameters.put("sign", sign); String requestXML = PayCommonUtil.getRequestXml(parameters); String result = CommonUtil.httpsRequestForStr(ConfigUtil.UNIFIED_ORDER_URL,"POST", requestXML); System.out.println("----------------------------------"); System.out.println(result); System.out.println("----------------------------------"); request.setAttribute("orderNo", orderNo); request.setAttribute("totalPrice", "0.01"); String payJSON=""; try { payJSON=CommonUtil.getH5PayStr(result,request); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } //System.out.println(payJSON); request.setAttribute("unifiedOrder",payJSON); RequestDispatcher dis= request.getRequestDispatcher("h5Pay.jsp"); dis.forward(request, response); } }
public static String getH5PayStr(String result,HttpServletRequest request) throws Exception{ Map<String, String> map = XMLUtil.doXMLParse(result); SortedMap<Object,Object> params = new TreeMap<Object,Object>(); params.put("appId", ConfigUtil.APPID); params.put("timeStamp", Long.toString(new Date().getTime())); params.put("nonceStr", PayCommonUtil.CreateNoncestr()); params.put("package", "prepay_id="+map.get("prepay_id")); params.put("signType", ConfigUtil.SIGN_TYPE); String paySign = PayCommonUtil.createSign("UTF-8", params); params.put("paySign", paySign); //paySign的生成规则和Sign的生成规则一致 String json = JSONObject.fromObject(params).toString(); return json; }
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>微信H5支付</title> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0"> <script type="text/javascript"> function jsApiCall(){ WeixinJSBridge.invoke( 'getBrandWCPayRequest',<%=(String)request.getAttribute("unifiedOrder")%>, function(res){ WeixinJSBridge.log(res.err_msg); //alert(res.err_code+res.err_desc+res.err_msg); if(res.err_msg == "get_brand_wcpay_request:ok" ) { alert("恭喜你,支付成功!"); }else{ alert(res.err_code+res.err_desc+res.err_msg); } } ); } function callpay(){ if (typeof WeixinJSBridge == "undefined"){ if( document.addEventListener ){ document.addEventListener('WeixinJSBridgeReady', jsApiCall, false); }else if (document.attachEvent){ document.attachEvent('WeixinJSBridgeReady', jsApiCall); document.attachEvent('onWeixinJSBridgeReady', jsApiCall); } }else{ jsApiCall(); } } </script> </head> <body> <input type="button" value="支付" onclick="callpay()"/> </body> </html>
package com.debug.weixin.servlet; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.PrintWriter; import java.util.Map; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.jdom.JDOMException; import com.debug.weixin.util.PayCommonUtil; import com.debug.weixin.util.XMLUtil; public class PayHandlerServlet extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { this.doPost(request, response); } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { InputStream inStream = request.getInputStream(); ByteArrayOutputStream outSteam = new ByteArrayOutputStream(); byte[] buffer = new byte[1024]; int len = 0; while ((len = inStream.read(buffer)) != -1) { outSteam.write(buffer, 0, len); } outSteam.close(); inStream.close(); String result = new String(outSteam.toByteArray(),"utf-8");//获取微信调用我们notify_url的返回信息 Map<Object, Object> map=null; try { map = XMLUtil.doXMLParse(result); } catch (JDOMException e) { // TODO Auto-generated catch block e.printStackTrace(); } for(Object keyValue : map.keySet()){ System.out.println(keyValue+"="+map.get(keyValue)); } if (map.get("result_code").toString().equalsIgnoreCase("SUCCESS")) { //对订单进行业务操作 System.out.println("-------------OK"); response.getWriter().write(PayCommonUtil.setXML("SUCCESS", "")); //告诉微信服务器,我收到信息了,不要在调用回调action了 } } }
Wichtige Punkte: Sie müssen die
Langlink-zu-Kurzlink-Schnittstelleaufrufen und Konfigurieren Sie den Scan richtig. Code für Zahlungsrückruf-URL1 Generieren Sie einen WeChat-Zahlungs-QR-Code basierend auf der Bestellnummer.
Im Folgenden finden Sie mehrere Methoden zum Generieren von QR-Codes:
Dies gilt als Werkzeugklasse. Eine andere Methode besteht darin, den QR-Code auf der Schnittstelle anzuzeigen. CreateQRCode verwendet hauptsächlich Codeblöcke:package com.debug.weixin.util; import com.google.zxing.common.BitMatrix; import javax.imageio.ImageIO; import java.io.File; import java.io.OutputStream; import java.io.IOException; import java.awt.image.BufferedImage; public final class MatrixToImageWriter { private static final int BLACK = 0xFF000000; private static final int WHITE = 0xFFFFFFFF; private MatrixToImageWriter() {} public static BufferedImage toBufferedImage(BitMatrix matrix) { int width = matrix.getWidth(); int height = matrix.getHeight(); BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); for (int x = 0; x < width; x++) { for (int y = 0; y < height; y++) { image.setRGB(x, y, matrix.get(x, y) ? BLACK : WHITE); } } return image; } public static void writeToFile(BitMatrix matrix, String format, File file) throws IOException { BufferedImage image = toBufferedImage(matrix); if (!ImageIO.write(image, format, file)) { throw new IOException("Could not write an image of format " + format + " to " + file); } } public static void writeToStream(BitMatrix matrix, String format, OutputStream stream) throws IOException { BufferedImage image = toBufferedImage(matrix); if (!ImageIO.write(image, format, stream)) { throw new IOException("Could not write an image of format " + format); } } }
public static void createCodeStream(String text,HttpServletResponse response) throws Exception{ // response.setContentType("image/jpeg"); ServletOutputStream sos = response.getOutputStream(); int width = 500; int height = 500; //二维码的图片格式 String format = "jpg"; MultiFormatWriter multiFormatWriter = new MultiFormatWriter(); Map hints = new HashMap(); //内容所使用编码 hints.put(EncodeHintType.CHARACTER_SET, "UTF-8"); BitMatrix bitMatrix = multiFormatWriter.encode(text, BarcodeFormat.QR_CODE, width, height, hints); //生成二维码 MatrixToImageWriter.writeToStream(bitMatrix, format,sos); sos.close(); }
package com.debug.weixin.servlet; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.PrintWriter; import java.util.Date; import java.util.Map; import java.util.SortedMap; import java.util.TreeMap; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.jdom.JDOMException; import com.debug.weixin.util.CommonUtil; import com.debug.weixin.util.ConfigUtil; import com.debug.weixin.util.CreateQRCode; import com.debug.weixin.util.PayCommonUtil; import com.debug.weixin.util.XMLUtil; import com.mongodb.DBObject; public class ScanCodePayServlet extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { this.doPost(request, response); } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String flag=request.getParameter("flag"); if("createCode".equals(flag)){ createPayCode(request,response); }else{ try { wxScanCodeHandler(request,response); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } } public void createPayCode(HttpServletRequest request,HttpServletResponse response){ String orderNo=request.getParameter("orderNo"); SortedMap<Object,Object> paras = new TreeMap<Object,Object>(); paras.put("appid", ConfigUtil.APPID); paras.put("mch_id", ConfigUtil.MCH_ID); paras.put("time_stamp", Long.toString(new Date().getTime())); paras.put("nonce_str", PayCommonUtil.CreateNoncestr()); paras.put("product_id", orderNo);//商品号要唯一 String sign = PayCommonUtil.createSign("UTF-8", paras); paras.put("sign", sign); String url = "weixin://wxpay/bizpayurl?sign=SIGN&appid=APPID&mch_id=MCHID&product_id=PRODUCTID&time_stamp=TIMESTAMP&nonce_str=NOCESTR"; String nativeUrl = url.replace("SIGN", sign).replace("APPID", ConfigUtil.APPID).replace("MCHID", ConfigUtil.MCH_ID).replace("PRODUCTID", (String)paras.get("product_id")).replace("TIMESTAMP", (String)paras.get("time_stamp")).replace("NOCESTR", (String)paras.get("nonce_str")); SortedMap<Object,Object> parameters = new TreeMap<Object,Object>(); parameters.put("appid", ConfigUtil.APPID); parameters.put("mch_id", ConfigUtil.MCH_ID); parameters.put("nonce_str", PayCommonUtil.CreateNoncestr()); parameters.put("long_url", CommonUtil.urlEncodeUTF8(nativeUrl)); String sign2 = PayCommonUtil.createSign("UTF-8", parameters); parameters.put("sign", sign2); String requestXML = PayCommonUtil.getRequestXml(parameters); String result =CommonUtil.httpsRequestForStr(ConfigUtil.SHORT_URL, "POST", requestXML); Map<String, String> map=null; try { map = XMLUtil.doXMLParse(result); } catch (JDOMException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } String returnCode = map.get("return_code"); String resultCode = map.get("result_code"); if(returnCode.equalsIgnoreCase("SUCCESS")&&resultCode.equalsIgnoreCase("SUCCESS")){ String shortUrl = map.get("short_url"); //TODO 拿到shortUrl,写代码生成二维码 System.out.println("shortUrl="+shortUrl); try { CreateQRCode.createCodeStream(shortUrl,response); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } } public void wxScanCodeHandler(HttpServletRequest request,HttpServletResponse response) throws Exception { InputStream inStream = request.getInputStream(); ByteArrayOutputStream outSteam = new ByteArrayOutputStream(); byte[] buffer = new byte[1024]; int len = 0; while ((len = inStream.read(buffer)) != -1) { outSteam.write(buffer, 0, len); } outSteam.close(); inStream.close(); String result = new String(outSteam.toByteArray(),"utf-8");//获取微信调用我们notify_url的返回信息 Map<Object, Object> map=null; try { map = XMLUtil.doXMLParse(result); } catch (JDOMException e) { // TODO Auto-generated catch block e.printStackTrace(); } for(Object keyValue : map.keySet()){ System.out.println(keyValue+"="+map.get(keyValue)); } String orderNo=map.get("product_id").toString(); //接收到请求参数后调用统一下单接口 SortedMap<Object, Object> parameters = new TreeMap<Object, Object>(); parameters.put("appid", ConfigUtil.APPID); parameters.put("mch_id", ConfigUtil.MCH_ID); parameters.put("device_info", "1000"); parameters.put("body", "测试扫码支付订单"); parameters.put("nonce_str", PayCommonUtil.CreateNoncestr()); parameters.put("out_trade_no", map.get("product_id")); //parameters.put("total_fee", String.valueOf(totalPrice)); parameters.put("total_fee", "1"); parameters.put("spbill_create_ip", request.getRemoteAddr()); parameters.put("notify_url", ConfigUtil.NOTIFY_URL); parameters.put("trade_type", "NATIVE"); parameters.put("openid", map.get("openid")); String sign = PayCommonUtil.createSign("UTF-8", parameters); parameters.put("sign", sign); String requestXML = PayCommonUtil.getRequestXml(parameters); String result2 = CommonUtil.httpsRequestForStr(ConfigUtil.UNIFIED_ORDER_URL,"POST", requestXML); System.out.println("-----------------------------统一下单结果---------------------------"); System.out.println(result2); Map<String, String> mm=null; try { mm=getH5PayMap(result2,request); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } //String prepayId=getPrepayId(result2,request); //String returnNoneStr=getReturnNoneStr(result2,request); String prepayId=mm.get("prepay_id"); String returnNoneStr=mm.get("nonce_str");; SortedMap<Object, Object> lastSign = new TreeMap<Object, Object>(); lastSign.put("return_code", "SUCCESS"); lastSign.put("appid", ConfigUtil.APPID); lastSign.put("mch_id", ConfigUtil.MCH_ID); lastSign.put("nonce_str", returnNoneStr); lastSign.put("prepay_id", prepayId); lastSign.put("result_code", "SUCCESS"); lastSign.put("key", ConfigUtil.API_KEY); String lastSignpara = PayCommonUtil.createSign("UTF-8", lastSign); StringBuffer buf=new StringBuffer(); buf.append("<xml>"); buf.append("<return_code>SUCCESS</return_code>"); buf.append("<appid>"+ConfigUtil.APPID+"</appid>"); buf.append("<mch_id>"+ConfigUtil.MCH_ID+"</mch_id>"); buf.append("<nonce_str>"+returnNoneStr+"</nonce_str>"); buf.append("<prepay_id>"+prepayId+"</prepay_id>"); buf.append("<result_code>SUCCESS</result_code>"); buf.append("<sign>"+lastSignpara+"</sign>"); buf.append("</xml>"); response.getWriter().print(buf.toString()); } public Map<String, String> getH5PayMap(String result,HttpServletRequest request) throws Exception{ Map<String, String> map = XMLUtil.doXMLParse(result); return map; } }
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