本文主要包含微信支付,微信H5支付,公众号开发支付,微信公众号支付等相关知识,匿名希望在学习及工作中可以帮助到您
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_C