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这篇文章主要为大家详细介绍了微信公众号支付H5调用支付,具有一定的参考价值，感兴趣的小伙伴们可以参考一下
最近项目需要微信支付，然后看了下微信公众号支付，虽然不难，但是细节还是需要注意的，用了大半天时间写了个demo，并且完整的测试了一下支付流程，下面分享一下微信公众号支付的经验。
一、配置公众号微信支付
需要我们配置微信公众号支付地址和测试白名单。
比如：支付JS页面的地址为 http://www.xxx.com/shop/pay/ 那此处配置www.xxx.com/shop/pay/
二、开发流程
借用微信公众号支付api(地址 http://pay.weixin.qq.com/wiki/doc/api/index.php?chapter=7_4)，我们需要开发的为红色标记出的。如下：
三、向微信服务器端下订单
调用统一下单接口，这样就能获取微信支付的prepay_id（http://pay.weixin.qq.com/wiki/doc/api/index.php?chapter=9_1）。
在调用该接口前有几个字段是H5支付必须填写的openid
3.1 获取openid
可以通过网页授权形式（http://mp.weixin.qq.com/wiki/17/c0f37d5704f0b64713d5d2c37b468d75.html）
在微信中发送如下链接
https://open.weixin.qq.com/connect/oauth2/authorize?appid=wx520c15f417810387&redirect_uri=要跳转的下订单的url&response_type=code&scope=snsapi_base&state=123#wechat_redirect
3.2 后台支付
代码如下，包含预处理订单，支付订单等接口。
package org.andy.controller; import java.io.ByteArrayInputStream; import java.io.IOException; import java.io.InputStream; import java.io.UnsupportedEncodingException; import java.util.Date; import java.util.HashMap; import java.util.Iterator; import java.util.Map; import java.util.Map.Entry; import java.util.Random; import javax.servlet.ServletInputStream; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.codec.digest.DigestUtils; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.xmlpull.v1.XmlPullParser; import org.xmlpull.v1.XmlPullParserException; import org.xmlpull.v1.XmlPullParserFactory; import com.fasterxml.jackson.databind.JsonNode; import com.gson.oauth.Oauth; import com.gson.oauth.Pay; import com.gson.util.HttpKit; import com.gson.util.Tools; import org.andy.util.DatetimeUtil; import org.andy.util.JsonUtil; import org.andy.util.SessionUtil; import org.andy.util.WebUtil; @Controller @RequestMapping("/pay") public class WXPayController { @RequestMapping(value = "wxprepay") public void jspay(HttpServletRequest request, HttpServletResponse response, String callback) throws Exception { // 获取openid String openId = SessionUtil.getAtt(request, "openId"); if (openId == null) { openId = getUserOpenId(request); } String appid = "wx16691fcb0523c1a4"; String partnerid = "22223670"; String paternerKey = "fjfjfjfjf1234567FFFFFFFFF1234567"; String out_trade_no = getTradeNo(); Map<String, String> paraMap = new HashMap<String, String>(); paraMap.put("appid", appid); paraMap.put("attach", "测试支付"); paraMap.put("body", "测试购买Beacon支付"); paraMap.put("mch_id", partnerid); paraMap.put("nonce_str", create_nonce_str()); paraMap.put("openid", openId); paraMap.put("out_trade_no", out_trade_no); paraMap.put("spbill_create_ip", getAddrIp(request)); paraMap.put("total_fee", "1"); paraMap.put("trade_type", "JSAPI"); paraMap.put("notify_url", "http://www.xxx.co/wxpay/pay/appPay_notify.shtml"); String sign = getSign(paraMap, paternerKey); paraMap.put("sign", sign); // 统一下单 https://api.mch.weixin.qq.com/pay/unifiedorder String url = "https://api.mch.weixin.qq.com/pay/unifiedorder"; String xml = ArrayToXml(paraMap, false); String xmlStr = HttpKit.post(url, xml); // 预付商品id String prepay_id = ""; if (xmlStr.indexOf("SUCCESS") != -1) { Map<String, String> map = doXMLParse(xmlStr); prepay_id = (String) map.get("prepay_id"); } Map<String, String> payMap = new HashMap<String, String>(); payMap.put("appId", appid); payMap.put("timeStamp", create_timestamp()); payMap.put("nonceStr", create_nonce_str()); payMap.put("signType", "MD5"); payMap.put("package", "prepay_id=" + prepay_id); String paySign = getSign(payMap, paternerKey); payMap.put("pg", prepay_id); payMap.put("paySign", paySign); WebUtil.response(response, WebUtil.packJsonp(callback, JsonUtil.warpJsonNodeResponse(JsonUtil.objectToJsonNode(payMap)).toString())); } @RequestMapping(value = "appPay") public void appPay(HttpServletRequest request, HttpServletResponse response, String body, String detail, String total_fee, String spbill_create_ip, String notify_url, String trade_type, String callback) throws Exception { String appid = "wx16691fcb0523c1a4"; String partnerid = "22223670"; String paternerKey = "fjfjfjfjf1234567FFFFFFFFF1234567"; String out_trade_no = getTradeNo(); Map<String, String> paraMap = new HashMap<String, String>(); paraMap.put("appid", appid); paraMap.put("body", body); paraMap.put("mch_id", partnerid); paraMap.put("nonce_str", create_nonce_str()); paraMap.put("out_trade_no", out_trade_no); paraMap.put("spbill_create_ip", spbill_create_ip); paraMap.put("total_fee", total_fee); paraMap.put("trade_type", trade_type); paraMap.put("notify_url", notify_url); String sign = getSign(paraMap, paternerKey); paraMap.put("sign", sign); // 统一下单 https://api.mch.weixin.qq.com/pay/unifiedorder String url = "https://api.mch.weixin.qq.com/pay/unifiedorder"; String xml = ArrayToXml(paraMap, false); String xmlStr = HttpKit.post(url, xml); // 预付商品id String prepay_id = ""; Map<String, String> map = doXMLParse(xmlStr); if (xmlStr.indexOf("SUCCESS") != -1) { prepay_id = (String) map.get("prepay_id"); } String result_code = map.get("result_code"); String err_code_des = map.get("err_code_des"); Map<String, String> payMap = new HashMap<String, String>(); payMap.put("appid", appid); payMap.put("partnerid", partnerid); payMap.put("prepayid", prepay_id); payMap.put("package", "Sign=WXPay"); payMap.put("noncestr", create_nonce_str()); payMap.put("timestamp", create_timestamp()); String paySign = getSign(payMap, paternerKey); payMap.put("sign", paySign); payMap.put("result_code", result_code); payMap.put("err_code_des", err_code_des); WebUtil.response(response, WebUtil.packJsonp(callback, JsonUtil.warpJsonNodeResponse(JsonUtil.objectToJsonNode(payMap)).toString())); } @RequestMapping("/appPay_notify") public void appPayNotify(HttpServletRequest request, HttpServletResponse response) throws Exception{ //String xml = "<xml><appid><![CDATA[wxb4dc385f953b356e]]></appid><bank_type><![CDATA[CCB_CREDIT]]></bank_type><cash_fee><![CDATA[1]]></cash_fee><fee_type><![CDATA[CNY]]></fee_type><is_subscribe><![CDATA[Y]]></is_subscribe><mch_id><![CDATA[1228442802]]></mch_id><nonce_str><![CDATA[1002477130]]></nonce_str><openid><![CDATA[o-HREuJzRr3moMvv990VdfnQ8x4k]]></openid><out_trade_no><![CDATA[1000000000051249]]></out_trade_no><result_code><![CDATA[SUCCESS]]></result_code><return_code><![CDATA[SUCCESS]]></return_code><sign><![CDATA[1269E03E43F2B8C388A414EDAE185CEE]]></sign><time_end><![CDATA[20150324100405]]></time_end><total_fee>1</total_fee><trade_type><![CDATA[JSAPI]]></trade_type><transaction_id><![CDATA[1009530574201503240036299496]]></transaction_id></xml>"; response.setCharacterEncoding("UTF-8"); response.setContentType("text/xml"); ServletInputStream in = request.getInputStream(); String xmlMsg = Tools.inputStream2String(in); Map<String, String> map = doXMLParse(xmlMsg); String return_code = map.get("return_code"); String return_msg = map.get("return_msg"); map = new HashMap<String, String>(); map.put("return_code", return_code); map.put("return_msg", return_msg); //响应xml String resXml = ArrayToXml(map, true); response.getWriter().write(resXml); } @RequestMapping("/orderquery.do") public void orderquery(HttpServletRequest request, HttpServletResponse response, String transaction_id, String out_trade_no, String callback) throws Exception{ String url = "https://api.mch.weixin.qq.com/pay/orderquery"; String appid = "wx16691fcb0523c1a4"; String partnerid = "22223670"; String paternerKey = "fjfjfjfjf1234567FFFFFFFFF1234567"; Map<String, String> map = new HashMap<String, String>(); map.put("appid", appid); map.put("mch_id", partnerid); if(transaction_id != null && !transaction_id.equals("")){ map.put("transaction_id", transaction_id); }else { map.put("out_trade_no", out_trade_no); } map.put("nonce_str", create_nonce_str()); String paySign = getSign(map, paternerKey); map.put("sign", paySign); String xml = ArrayToXml(map, false); String xmlStr = HttpKit.post(url, xml); Map<String, String> orderMap = doXMLParse(xmlStr); WebUtil.response(response, WebUtil.packJsonp(callback, JsonUtil.warpJsonNodeResponse(JsonUtil.objectToJsonNode(orderMap)).toString())); } /** * map转成xml * * @param arr * @return */ public String ArrayToXml(Map<String, String> parm, boolean isAddCDATA) { StringBuffer strbuff = new StringBuffer(<xml>); if (parm != null ) { for (Entry<String, String> entry : parm.entrySet()) { strbuff.append("<").append(entry.getKey()).append(">"); if (isAddCDATA) { strbuff.append(<![CDATA[).append(entry.getValue()).append(]]>); }else { strbuff.append(entry.getValue()); } strbuff.append("<").append(entry.getKey()).append(">"); } } return strbuff.append(</xml>).toString(); } // 获取openId private String getUserOpenId(HttpServletRequest request) throws Exception { String code = request.getParameter("code"); if (code == null) { String openId = request.getParameter("openId"); return openId; } Oauth o = new Oauth(); String token = o.getToken(code); JsonNode node = JsonUtil.StringToJsonNode(token); String openId = node.get("openid").asText(); return openId; } private String create_nonce_str() { String chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"; String res = ""; for (int i = 0; i < 16; i++) { Random rd = new Random(); res += chars.charAt(rd.nextInt(chars.length() - 1)); } return res; } private String getAddrIp(HttpServletRequest request){ return request.getRemoteAddr(); } private String create_timestamp() { return Long.toString(System.currentTimeMillis() / 1000); } private String getTradeNo(){ String timestamp = DatetimeUtil.formatDate(new Date(), DatetimeUtil.DATETIME_PATTERN); return "HZNO" + timestamp; } private String getSign(Map<String, String> params, String paternerKey ) throws UnsupportedEncodingException { String string1 = Pay.createSign(params, false); String stringSignTemp = string1 + "&key=" + paternerKey; String signValue = DigestUtils.md5Hex(stringSignTemp).toUpperCase(); return signValue; } private Map<String, String> doXMLParse(String xml) throws XmlPullParserException, IOException { InputStream inputStream = new ByteArrayInputStream(xml.getBytes()); Map<String, String> map = null; XmlPullParser pullParser = XmlPullParserFactory.newInstance() .newPullParser(); pullParser.setInput(inputStream, "UTF-8"); // 为xml设置要解析的xml数据 int eventType = pullParser.getEventType(); while (eventType != XmlPullParser.END_DOCUMENT) { switch (eventType) { case XmlPullParser.START_DOCUMENT: map = new HashMap<String, String>(); break; case XmlPullParser.START_TAG: String key = pullParser.getName(); if (key.equals("xml")) break; String value = pullParser.nextText(); map.put(key, value); break; case XmlPullParser.END_TAG: break; } eventType = pullParser.next(); } return map; } }登录后复制wxprepay.shtm接口是预处理订单接口向微信服务器下订单。 appPay.shtml接口是支付接口。 appPay_notify.shtml接口是微信支付后异步通知结果接口。 orderquery.shtml接口是订单查询接口
3.3、涉及到的工具类SessionUtil.java工具类
package org.andy.util; import javax.servlet.http.HttpServletRequest; public class SessionUtil { public static void addAtt(HttpServletRequest request, String key, Object value){ request.getSession().setAttribute(key, value); } public static void removeAtt(HttpServletRequest request, String key){ request.getSession().removeAttribute(key); } public static String getAtt(HttpServletRequest request, String key){ return (String)request.getSession().getAttribute(key); } public static Object getAttObj(HttpServletRequest request, String key){ return request.getSession().getAttribute(key); } public static String optAtt(HttpServletRequest request, String key, String value){ String r = (String)request.getSession().getAttribute(key); if (r == null){ r = value; } return r; } }登录后复制HttpKit 网络请求工具类
/** * https 请求 微信为https的请求 * * @author andy * @date 2015-10-9 下午2:40:19 */ public class HttpKit { private static final String DEFAULT_CHARSET = "UTF-8"; /** * @return 返回类型: * @throws IOException * @throws UnsupportedEncodingException * @throws NoSuchProviderException * @throws NoSuchAlgorithmException * @throws KeyManagementException * @description 功能描述: get 请求 */ public static String get(String url, Map<String, String> params, Map<String, String> headers) throws IOException, ExecutionException, InterruptedException { AsyncHttpClient http = new AsyncHttpClient(); AsyncHttpClient.BoundRequestBuilder builder = http.prepareGet(url); builder.setBodyEncoding(DEFAULT_CHARSET); if (params != null && !params.isEmpty()) { Set<String> keys = params.keySet(); for (String key : keys) { builder.addQueryParameter(key, params.get(key)); } } if (headers != null && !headers.isEmpty()) { Set<String> keys = headers.keySet(); for (String key : keys) { builder.addHeader(key, params.get(key)); } } Future<Response> f = builder.execute(); String body = f.get().getResponseBody(DEFAULT_CHARSET); http.close(); return body; } /** * @return 返回类型: * @throws IOException * @throws UnsupportedEncodingException * @throws NoSuchProviderException * @throws NoSuchAlgorithmException * @throws KeyManagementException * @description 功能描述: get 请求 */ public static String get(String url) throws KeyManagementException, NoSuchAlgorithmException, NoSuchProviderException, UnsupportedEncodingException, IOException, ExecutionException, InterruptedException { return get(url, null); } /** * @return 返回类型: * @throws IOException * @throws NoSuchProviderException * @throws NoSuchAlgorithmException * @throws KeyManagementException * @throws UnsupportedEncodingException * @description 功能描述: get 请求 */ public static String get(String url, Map<String, String> params) throws KeyManagementException, NoSuchAlgorithmException, NoSuchProviderException, UnsupportedEncodingException, IOException, ExecutionException, InterruptedException { return get(url, params, null); } /** * @return 返回类型: * @throws IOException * @throws NoSuchProviderException * @throws NoSuchAlgorithmException * @throws KeyManagementException * @description 功能描述: POST 请求 */ public static String post(String url, Map<String, String> params) throws IOException, ExecutionException, InterruptedException { AsyncHttpClient http = new AsyncHttpClient(); AsyncHttpClient.BoundRequestBuilder builder = http.preparePost(url); builder.setBodyEncoding(DEFAULT_CHARSET); if (params != null && !params.isEmpty()) { Set<String> keys = params.keySet(); for (String key : keys) { builder.addParameter(key, params.get(key)); } } Future<Response> f = builder.execute(); String body = f.get().getResponseBody(DEFAULT_CHARSET); http.close(); return body; } public static String post(String url, String s) throws IOException, ExecutionException, InterruptedException { AsyncHttpClient http = new AsyncHttpClient(); AsyncHttpClient.BoundRequestBuilder builder = http.preparePost(url); builder.setBodyEncoding(DEFAULT_CHARSET); builder.setBody(s); Future<Response> f = builder.execute(); String body = f.get().getResponseBody(DEFAULT_CHARSET); http.close(); return body; } }登录后复制支付工具类pay.java
/** * 支付相关方法 * @author andy * */ public class Pay { // 发货通知接口 private static final String DELIVERNOTIFY_URL = "https://api.weixin.qq.com/pay/delivernotify?access_token="; /** * 参与 paySign 签名的字段包括：appid、timestamp、noncestr、package 以及 appkey。 * 这里 signType 并不参与签名微信的Package参数 * @param params * @return * @throws UnsupportedEncodingException */ public static String getPackage(Map<String, String> params) throws UnsupportedEncodingException { String partnerKey = ConfKit.get("partnerKey"); String partnerId = ConfKit.get("partnerId"); String notifyUrl = ConfKit.get("notify_url"); // 公共参数 params.put("bank_type", "WX"); params.put("attach", "yongle"); params.put("partner", partnerId); params.put("notify_url", notifyUrl); params.put("input_charset", "UTF-8"); return packageSign(params, partnerKey); } /** * 构造签名 * @param params * @param encode * @return * @throws UnsupportedEncodingException */ public static String createSign(Map<String, String> params, boolean encode) throws UnsupportedEncodingException { Set<String> keysSet = params.keySet(); Object[] keys = keysSet.toArray(); Arrays.sort(keys); StringBuffer temp = new StringBuffer(); boolean first = true; for (Object key : keys) { if (first) { first = false; } else { temp.append("&"); } temp.append(key).append("="); Object value = params.get(key); String valueString = ""; if (null != value) { valueString = value.toString(); } if (encode) { temp.append(URLEncoder.encode(valueString, "UTF-8")); } else { temp.append(valueString); } } return temp.toString(); } /** * @param params * @param paternerKey * @return * @throws UnsupportedEncodingException */ private static String packageSign(Map<String, String> params, String paternerKey) throws UnsupportedEncodingException { String string1 = createSign(params, false); String stringSignTemp = string1 + "&key=" + paternerKey; String signValue = DigestUtils.md5Hex(stringSignTemp).toUpperCase(); String string2 = createSign(params, true); return string2 + "&sign=" + signValue; } /** * 支付签名 * @param timestamp * @param noncestr * @param packages * @return * @throws UnsupportedEncodingException */ public static String paySign(String timestamp, String noncestr,String packages) throws UnsupportedEncodingException { Map<String, String> paras = new HashMap<String, String>(); paras.put("appid", ConfKit.get("AppId")); paras.put("timestamp", timestamp); paras.put("noncestr", noncestr); paras.put("package", packages); paras.put("appkey", ConfKit.get("paySignKey")); // appid、timestamp、noncestr、package 以及 appkey。 String string1 = createSign(paras, false); String paySign = DigestUtils.shaHex(string1); return paySign; } /** * 支付回调校验签名 * @param timestamp * @param noncestr * @param openid * @param issubscribe * @param appsignature * @return * @throws UnsupportedEncodingException */ public static boolean verifySign(long timestamp, String noncestr, String openid, int issubscribe, String appsignature) throws UnsupportedEncodingException { Map<String, String> paras = new HashMap<String, String>(); paras.put("appid", ConfKit.get("AppId")); paras.put("appkey", ConfKit.get("paySignKey")); paras.put("timestamp", String.valueOf(timestamp)); paras.put("noncestr", noncestr); paras.put("openid", openid); paras.put("issubscribe", String.valueOf(issubscribe)); // appid、appkey、productid、timestamp、noncestr、openid、issubscribe String string1 = createSign(paras, false); String paySign = DigestUtils.shaHex(string1); return paySign.equalsIgnoreCase(appsignature); } /** * 发货通知签名 * @param paras * @return * @throws UnsupportedEncodingException * * @参数 appid、appkey、openid、transid、out_trade_no、deliver_timestamp、deliver_status、deliver_msg； */ private static String deliverSign(Map<String, String> paras) throws UnsupportedEncodingException { paras.put("appkey", ConfKit.get("paySignKey")); String string1 = createSign(paras, false); String paySign = DigestUtils.shaHex(string1); return paySign; } /** * 发货通知 * @param access_token * @param openid * @param transid * @param out_trade_no * @return * @throws IOException * @throws NoSuchProviderException * @throws NoSuchAlgorithmException * @throws KeyManagementException * @throws InterruptedException * @throws ExecutionException */ public static boolean delivernotify(String access_token, String openid, String transid, String out_trade_no) throws IOException, ExecutionException, InterruptedException { Map<String, String> paras = new HashMap<String, String>(); paras.put("appid", ConfKit.get("AppId")); paras.put("openid", openid); paras.put("transid", transid); paras.put("out_trade_no", out_trade_no); paras.put("deliver_timestamp", (System.currentTimeMillis() / 1000) + ""); paras.put("deliver_status", "1"); paras.put("deliver_msg", "ok"); // 签名 String app_signature = deliverSign(paras); paras.put("app_signature", app_signature); paras.put("sign_method", "sha1"); String json = HttpKit.post(DELIVERNOTIFY_URL.concat(access_token), JSONObject.toJSONString(paras)); if (StringUtils.isNotBlank(json)) { JSONObject object = JSONObject.parseObject(json); if (object.containsKey("errcode")) { int errcode = object.getIntValue("errcode"); return errcode == 0; } } return false; } }登录后复制流转化Tools.java工具类
public final class Tools { public static final String inputStream2String(InputStream in) throws UnsupportedEncodingException, IOException{ if(in == null) return ""; StringBuffer out = new StringBuffer(); byte[] b = new byte[4096]; for (int n; (n = in.read(b)) != -1;) { out.append(new String(b, 0, n, "UTF-8")); } return out.toString(); } public static final boolean checkSignature(String token,String signature,String timestamp,String nonce){ List<String> params = new ArrayList<String>(); params.add(token); params.add(timestamp); params.add(nonce); Collections.sort(params,new Comparator<String>() { @Override public int compare(String o1, String o2) { return o1.compareTo(o2); } }); String temp = params.get(0)+params.get(1)+params.get(2); return SHA1.encode(temp).equals(signature); } }登录后复制相应前端数据工具WebUtil.java工具类
public class WebUtil { public static Object getSessionAttribute(HttpServletRequest req, String key) { Object ret = null; try { ret = req.getSession(false).getAttribute(key); } catch (Exception e) { } return ret; } public static void response(HttpServletResponse response, String result) { try { response.setContentType("application/json;charset=utf-8"); response.getWriter().write(result); } catch (IOException e) { e.printStackTrace(); } } public static void response(HttpServletResponse response, ResponseMessage result) { try { response.setContentType("application/json;charset=utf-8"); response.getWriter().write(JsonUtil.objectToJsonNode(result).toString()); } catch (Exception e) { e.printStackTrace(); } } public static String packJsonp(String callback, String json) { if (json == null) { json = ""; } if (callback == null || callback.isEmpty()) { return json; } return callback + "&&" + callback + '(' + json + ')'; } public static String packJsonp(String callback, ResponseMessage response) { String json = null; if (response == null) { json = ""; } else { json = JsonUtil.objectToJsonNode(response).toString(); } if (callback == null || callback.isEmpty()) { return json; } return callback + "&&" + callback + '(' + json + ')'; } }登录后复制Json转换工具JsonUtil.java
public class JsonUtil { public static ObjectNode warpJsonNodeResponse(JsonNode obj){ ObjectNode objectNode=createObjectNode(); objectNode.put("code", 1); objectNode.put("response", obj); return objectNode; } public static JsonNode objectToJsonNode(Object obj){ try { ObjectMapper objectMapper = new ObjectMapper(); String objJson=objectMapper.writeValueAsString(obj); JsonNode jsonNode = objectMapper.readTree(objJson); return jsonNode; } catch (JsonProcessingException e) { e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } return null; } }登录后复制四、微信H5调起支付
这个url需要后台实现，其实现功能如下： 1、接受微信服务器端发送的支付结果。 2、向微信服务器发送支付结果
具体 参考微信aip(http://pay.weixin.qq.com/wiki/doc/api/index.php?chapter=9_7)具体代码如下：4.1、授权向后台发起生成统一下订单页面wxrepay.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %> <% String path = request.getContextPath(); String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/"; long t = System.currentTimeMillis(); %> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta charset="utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0" /> <meta name="apple-mobile-web-app-capable" content="yes" /> <meta name="apple-mobile-web-app-status-bar-style" content="black" /> <meta name="format-detection" content="telephone=no" /> <title>微信公众号支付</title> <link href="../css/css.css?t=<%=t%>" rel="stylesheet" type="text/css"> </head> <body> <p class="index_box"> <p class="apply_name">商品</p> <p class="branch_con"> <ul> <li><span class="name">beacon 1分钱 1只</span></li> <li><span class="name">测试支付信息</span></li> </ul> <p class="cz_btn"><a href="javascript:reppay();" class="btn_1">确定购买</a></p> </p> </p> <script type="text/javascript" src="../js/common.js?t=<%=t%>"></script> <script type="text/javascript" > var code = urlparameter("code"); function reppay(){ ajaxUtil({}, mainpath+"/pay/wxprepay.shtml?code=" + code, repay); } function repay(response){ var info = response; var url = "wxpay?appId=" + info.appId + "&timeStamp=" +info.timeStamp + "&nonceStr=" + info.nonceStr + "&pg=" +info.pg + "&signType=" +info.signType + "&paySign=" +info.paySign; window.location.href= url + "&showwxpaytitle=1"; } </script> </body> </html>登录后复制首先是请求服务端wxprepay.shml接口，后台向微信支付平台获取支付订单信息，返回前台，wxpay.jsp页面4.2、确认支付页面
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %> <% String path = request.getContextPath(); String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/"; long t = System.currentTimeMillis(); %> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta charset="utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0" /> <meta name="apple-mobile-web-app-capable" content="yes" /> <meta name="apple-mobile-web-app-status-bar-style" content="black" /> <meta name="format-detection" content="telephone=no" /> <title>微信公众号支付</title> <link href="../css/css.css?t=<%=t%>" rel="stylesheet" type="text/css"> </head> <body> <p class="index_box"> <p class="apply_name">微信js支付测试</p> <p class="branch_con"> <ul> <li><span class="name">测试支付信息</span></li> </ul> <p class="cz_btn"><a href="javascript:pay();" class="btn_1">立即支付</a></p> </p> </p> <script type="text/javascript" src="../js/common.js?t=<%=t%>"></script> <script type="text/javascript"> var appId = urlparameter("appId"); var timeStamp = urlparameter("timeStamp"); var nonceStr = urlparameter("nonceStr"); var pg = urlparameter("pg"); var signType = urlparameter("signType"); var paySign = urlparameter("paySign"); function onBridgeReady(){ WeixinJSBridge.invoke( 'getBrandWCPayRequest', { "appId" : appId, //公众号名称，由商户传入 "timeStamp": timeStamp, //时间戳，自1970年以来的秒数 "nonceStr" : nonceStr, //随机串 "package" : "prepay_id=" + pg, "signType" : signType, //微信签名方式: "paySign" : paySign //微信签名 }, function(res){ if(res.err_msg == "get_brand_wcpay_request:ok" ) { alert("支付成功"); } // 使用以上方式判断前端返回,微信团队郑重提示：res.err_msg将在用户支付成功后返回 ok，但并不保证它绝对可靠。 } ); } function pay(){ if (typeof WeixinJSBridge == "undefined"){ if( document.addEventListener ){ document.addEventListener('WeixinJSBridgeReady', onBridgeReady, false); }else if (document.attachEvent){ document.attachEvent('WeixinJSBridgeReady', onBridgeReady); document.attachEvent('onWeixinJSBridgeReady', onBridgeReady); } }else{ onBridgeReady(); } } </script> </body> </html>登录后复制4.2、前台涉及到的工具类javascript工具类common.js，样式css.css就不贴了没意义。
var path="wxpay"; var mainpath = "/wxpay"; var appid = "wx16691fcb0523c1a4"; var urlpre = "http://www.xxx.com/wxpay/page"; var urlhost = "http://www.xxx.com/"; $(document).ready(function(){ $(".refresher").click(function(){ refresh(); }); $("#goback").click(function(){ goback(); }); }); function popupMsg(msg){ alert(msg); } function printUtilViaGet(panel, requestdata, ajaxurl, printfunction){ $.ajax({ type: 'GET', url: ajaxurl, data: requestdata, cache:false, dataType:"json", async: false, success: function(response) { if (response.code){ if (panel != null && panel.length > 0){ $(panel).html(""); if (printfunction != null) $(panel).html(printfunction(response.response)); } return true; } else { //alert(response.reason); } }, error: function(x, e) { //alert("error", x); }, complete: function(x) { //alert("call complete"); } }); return false; } function ajaxUtilViaGet(requestdata, ajaxurl, succFunction, failFunction){ $.ajax({ url: ajaxurl, type: "GET", dataType: "json", cache:false, data: requestdata, async: false, success: function(response) { if (response.code){ if (succFunction != null) succFunction(response.response); } else { if (failFunction != null) failFunction(response.response); } }, error: function(x, e) { //alert("error", x); }, complete: function(x) { } }); return false; } function printUtil(panel, requestdata, ajaxurl, printfunction, ajaxasync) { if (isEmpty(ajaxasync)) { ajaxasync = false; } $.ajax({ type : 'POST', url : ajaxurl, data : requestdata, cache : false, dataType : "json", async : ajaxasync, success : function(response) { if (response.code) { if (panel != null && panel.length > 0) { $(panel).html(""); if (printfunction != null) $(panel).html(printfunction(response.response)); } return true; } else { // alert(response.reason); } }, error : function(x, e) { // alert("error", x); }, complete : function(x) { // alert("call complete"); } }); return false; } function appendUtil(panel, requestdata, ajaxurl, printfunction, ajaxasync) { if (isEmpty(ajaxasync)) { ajaxasync = false; } $.ajax({ type : 'POST', url : ajaxurl, data : requestdata, cache : false, dataType : "json", async : ajaxasync, success : function(response) { if (response.code) { if (panel != null && panel.length > 0) { if (printfunction != null) $(panel).append(printfunction(response.response)); } return true; } else { // alert(response.reason); } }, error : function(x, e) { // alert("error", x); }, complete : function(x) { // alert("call complete"); } }); return false; } function ajaxUtilAsync(requestdata, ajaxurl, succFunction, failFunction) { $.ajax({ url : ajaxurl, type : "POST", dataType : "json", cache : false, data : requestdata, async : true, success : function(response) { if (typeof response.code == "number") { if (response.code > 0) { if (succFunction != null) succFunction(response.response); } else { if (failFunction != null) failFunction(response.response); } } else { if (response.result) { if (succFunction != null) succFunction(response.response); } else { if (failFunction != null) failFunction(response.response); } } }, error : function(x, e) { // alert("error", x); }, complete : function(x) { } }); return false; } function ajaxUtil(requestdata, ajaxurl, succFunction, failFunction){ $.ajax({ url: ajaxurl, type: "POST", dataType: "json", cache:false, data: requestdata, async: false, success: function(response) { if (typeof response.code == "number"){ if (response.code > 0){ if (succFunction != null) succFunction(response.response); } else { if (failFunction != null) failFunction(response.response); } } else { if (response.result){ if (succFunction != null) succFunction(response.response); } else { if (failFunction != null) failFunction(response.response); } } }, error: function(x, e) { //alert("error", x); }, complete: function(x) { } }); return false; } function loadSelection(panel, requestdata, ajaxurl, itemName){ ajaxUtil(requestdata, ajaxurl, function(response){ var list = response.list; for (var i = 0;i<list.length;i++){ $(panel).append("<option value='"+list[i][itemName]+"'>"+list[i][itemName]+"</option>"); } }, null); } function ajaxSubmitRefresh(formId) { var hideForm = $(formId); var options = { dataType : "json", beforeSubmit : function() { }, success : function(result) { if (result.result){ showMsg("提交成功"); } else { alert("提交失败！"); } }, error : function(result) { alert("提交失败！"); } }; hideForm.ajaxSubmit(options); } function ajaxSubmitWithJump(formId, nextPage) { var hideForm = $(formId); var options = { dataType : "json", beforeSubmit : function() { }, success : function(result) { if (result.result){ alert("提交成功"); window.location.href = nextPage; } else { alert("提交失败！"); } }, error : function(result) { alert("提交失败！"); } }; hideForm.ajaxSubmit(options); } function refresh(){ window.location.href = window.location.href; } function goback(){ history.go(-1); } function urlparameter(paras){ var url = location.href; var paraString = url.substring(url.indexOf("?")+1,url.length).split("&"); var paraObj = {}; for (var i=0; j=paraString[i]; i++){ paraObj[j.substring(0,j.indexOf("=")).toLowerCase()] = j.substring(j.indexOf("=")+1,j.length); } var returnValue = paraObj[paras.toLowerCase()]; if(typeof(returnValue)=="undefined"){ return ""; }else{ return returnValue; } } String.prototype.endWith=function(str){ if(str==null||str==""||this.length==0||str.length>this.length) return false; if(this.substring(this.length-str.length)==str) return true; else return false; return true; }; String.prototype.startWith=function(str){ if(str==null||str==""||this.length==0||str.length>this.length) return false; if(this.substr(0,str.length)==str) return true; else return false; return true; }; function getFileUrl(sourceId) { var url = ""; if (navigator.userAgent.indexOf("MSIE")>=1) { // IE url = document.getElementById(sourceId).value; } else if(navigator.userAgent.indexOf("Firefox")>0) { // Firefox url = window.URL.createObjectURL(document.getElementById(sourceId).files.item(0)); } else if(navigator.userAgent.indexOf("Chrome")>0) { // Chrome url = window.URL.createObjectURL(document.getElementById(sourceId).files.item(0)); } return url; } function preImg(sourceId, targetId) { var url = getFileUrl(sourceId); var imgPre = document.getElementById(targetId); imgPre.src = url; } function initWX(){ $.ajax({ url:mainpath+'/wechatjs.do', type:'POST', dataType:'json', async: false, data: {url:location.href.split('#')[0]}, success:function(result){ console.log(result); var data=result['response']['map']; if(result['code']==1){ wx.config({ debug: false, appId:data['appId'], timestamp:data['timestamp'], nonceStr:data['nonceStr'], signature:data['signature'], jsApiList: ['onMenuShareTimeline','onMenuShareAppMessage','getLocation', 'onMenuShareQQ', 'onMenuShareWeibo'] }); }else{ alert("fail to get code"); window.alert('fail'); }; } }); } var EARTH_RADIUS = 6378137.0; //单位M var PI = Math.PI; function getRad(d){ return d*PI/180.0; } function getGreatCircleDistance(lat1,lng1,lat2,lng2){ var radLat1 = getRad(lat1); var radLat2 = getRad(lat2); var a = radLat1 - radLat2; var b = getRad(lng1) - getRad(lng2); var s = 2*Math.asin(Math.sqrt(Math.pow(Math.sin(a/2),2) + Math.cos(radLat1)*Math.cos(radLat2)*Math.pow(Math.sin(b/2),2))); s = s*EARTH_RADIUS; s = Math.round(s*10000)/10000.0; s = Math.round(s); return s; } //对Date的扩展，将 Date 转化为指定格式的String //月(M)、日(d)、小时(h)、分(m)、秒(s)、季度(q) 可以用 1-2 个占位符， //年(y)可以用 1-4 个占位符，毫秒(S)只能用 1 个占位符(是 1-3 位的数字) //例子： //(new Date()).Format("yyyy-MM-dd hh:mm:ss.S") ==> 2006-07-02 08:09:04.423 //(new Date()).Format("yyyy-M-d h:m:s.S") ==> 2006-7-2 8:9:4.18 Date.prototype.format = function(fmt) { //author: meizz var o = { "M+" : this.getMonth()+1, //月份 "d+" : this.getDate(), //日 "h+" : this.getHours(), //小时 "m+" : this.getMinutes(), //分 "s+" : this.getSeconds(), //秒 "q+" : Math.floor((this.getMonth()+3)/3), //季度 "S" : this.getMilliseconds() //毫秒 }; if(/(y+)/.test(fmt)) fmt=fmt.replace(RegExp.$1, (this.getFullYear()+"").substr(4 - RegExp.$1.length)); for(var k in o) if(new RegExp("("+ k +")").test(fmt)) fmt = fmt.replace(RegExp.$1, (RegExp.$1.length==1) ? (o[k]) : (("00"+ o[k]).substr((""+ o[k]).length))); return fmt; }; //判断为空 function isEmpty(src){ if(("undefined" == typeof src) || (src == null) || ($.trim(src) == "") ){ return true; } return false; } //判断不为空 function notEmpty(src){ return !isEmpty(src); } //微信页面授权 snsapi_base方式 function wecharauto2burl(url) { return "https://open.weixin.qq.com/connect/oauth2/authorize?appid=" + appid + "&redirect_uri=" + encodeURIComponent(url) + "&response_type=code&scope=snsapi_base&state=xybank#wechat_redirect"; } //页面授权针对snsapi_base方式授权的url function wecharauto2baseurl(url) { return wecharauto2burl(urlpre+url); } //页面授权针对snsapi_userinfo方式授权的url function wecharauto2userinfourl(url) { return "https://open.weixin.qq.com/connect/oauth2/authorize?appid=" + appid + "&redirect_uri=" + encodeURIComponent(urlpre+url) + "&response_type=code&scope=snsapi_userinfo&state=xybank#wechat_redirect"; } //微信分享 此方法需放在wx.ready中 function shareWeChat(title, link, imgUrl, desc){ wx.onMenuShareTimeline({ title: title, // 分享标题 link: link, // 分享链接 imgUrl: imgUrl, // 分享图标 success: function () { // 用户确认分享后执行的回调函数 }, cancel: function () { // 用户取消分享后执行的回调函数 } }); //分享给朋友 wx.onMenuShareAppMessage({ title: title, // 分享标题 desc: desc, // 分享描述 link: link, // 分享链接 imgUrl: imgUrl, // 分享图标 type: 'link', // 分享类型,music、video或link，不填默认为link dataUrl: '', // 如果type是music或video，则要提供数据链接，默认为空 success: function () { // 用户确认分享后执行的回调函数 }, cancel: function () { // 用户取消分享后执行的回调函数 } }); //分享到QQ wx.onMenuShareQQ({ title: title, // 分享标题 desc: desc, // 分享描述 link: link, // 分享链接 imgUrl: imgUrl, // 分享图标 success: function () { // 用户确认分享后执行的回调函数 }, cancel: function () { // 用户取消分享后执行的回调函数 } }); //分享到腾讯微博 wx.onMenuShareWeibo({ title: title, // 分享标题 desc: desc, // 分享描述 link: link, // 分享链接 imgUrl: imgUrl, // 分享图标 success: function () { // 用户确认分享后执行的回调函数 }, cancel: function () { // 用户取消分享后执行的回调函数 } }); }登录后复制五、支付结果
公众号调起效果如下：
支付成功后，微信服务器得到后台的Notify通知后，会发微信说明支付信息，支付凭证如下：
后续会全部更新微信app支付，微信支付退款，微信企业向个人付款，支付宝相关支付。而且会上传全部代码到csdn资源下载处，尽请关注。
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