微信支付-公众号支付
微信支付的步骤集合一样的
1、统一下单
2、支付结果通知
3、查询订单
一、统一下单
统一下单需要的参数 查看对应网址https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=9_1
其中需要用到openid，openid的获取要先获取授权code，然后通过code获取openid
获取code 我用的是静默授权
/**微信网页授权获取CODE**/
public static String WEB_OAUTH_URL = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=APPID&redirect_uri=REDIRECT_URI&response_type=code&scope=SCOPE&state=STATE#wechat_redirect";
//弹出授权页面，可通过openid拿到昵称、性别、所在地。并且，即使在未关注的情况下，只要用户授权，也能获取其信息
public static final String SNSAPI_USERINFO = "snsapi_userinfo";
//不弹出授权页面，直接跳转，只能获取用户openid 静默授权
public static final String SNSAPI_BASE = "snsapi_base";
@RequestMapping(params = "getCode",method ={RequestMethod.GET, RequestMethod.POST})
public void getCode(HttpServletRequest request,HttpServletResponse response) throws Exception{
参数根据自己的需求，自己传的什么获取什么，这些是我要用的。可以不用传参数
String goodsid = request.getParameter("goodsId");
//String type=request.getParameter("type");
// String priceInterval=request.getParameter("priceInterval");
//获取商品价格 绿色字的获取授权code必须填的 1跳转路径；2APPID；3用户授权
String pprice = request.getParameter("pprice");
获取到一个资源重定向到这个资源路径中去，只能用微信浏览器打开
String resource=oauthurl( ConfigUtil.getProperty("weChat_redirect_URI")+"&goodsid="+goodsid+"&pprice="+pprice+"&type="+type+"&priceInterval="+priceInterval, ConfigUtil.getProperty("appId"),OAuth2Util.SNSAPI_BASE);
System.out.println(resource);
response.sendRedirect(resource);
}
//授权路径做编码
public static String oauthurl(String targetUrl, String appid,String scope) {
String shareurl = "";
String encodeTargetURL = "";
try {
encodeTargetURL = URLEncoder.encode(targetUrl, "UTF-8");
} catch (UnsupportedEncodingException e) {
//这种一般不做处理
e.printStackTrace();
}
shareurl = WeiXinOpens.WEB_OAUTH_URL.replace("APPID", appid).replace("REDIRECT_URI", encodeTargetURL).replace("SCOPE", scope);
return shareurl;
}
/**
* 通过code获取openid 统一生成订单。这个方法就是上面获取code时填写的跳转路径
* @param request
* @param response
* @return
* @throws Exception
*/
@RequestMapping(params = "buyCourse",method ={RequestMethod.GET, RequestMethod.POST})
public ModelAndView buyCourse(HttpServletRequest request,
HttpServletResponse response) throws Exception {
JSONObject object = null;
//获取openID
String openId = ResourceUtil.getUserOpenId();
String orderid=UUIDGenerator.generate();
String appid = ConfigUtil.getProperty("appId");
String secret = ConfigUtil.getProperty("appSecret");
//获取code
String code =request.getParameter("code");
String type=request.getParameter("type");
//获取订阅周期，每个月按30天算，年按365天。当type=4dates不等于0时保存到期时间
String priceInterval=request.getParameter("priceInterval");
//判断openID是否为空，为空根据code获取token和openID
if(null==openId||"".equals(openId)){
Map
openId = (String)maptoken.get("openid");
}
request.getSession().setAttribute(WeiXinConstants.USER_OPENID, openId);
//终端IP
String remoteAddr = request.getRemoteAddr();
//获取商品ID
String goodsid = request.getParameter("goodsid");
//加入订单详情
GoodsInfomationEntity goodsInfomation=goodsInfomationDao.getByEbookId(goodsid);
//获取商品价格
String price = request.getParameter("pprice");
BigDecimal coursePrice =new BigDecimal(price);
String sn = orderid;
OrderEntity orderEntity = orderDao.getorder(openId, goodsid);
// 调用pay包中的方法生成微信预支付信息
//商品描述
String description = "课程购买";
//统一下单生成课程购买订单，并返回微信需要的预支付信息 得到prepayid
Map
//获取订单信息反给页面 把通过prepayid进行二次签名的信息返给页面
object = weixinPrePay.getPayParam(map);
String returnCode = map.get("return_code");
if(returnCode.equalsIgnoreCase("FAIL")){
String return_msg=object.getString("return_msg");
request.setAttribute("return_msg", return_msg);
return new ModelAndView("weixin/guanjia/minimail/pay");
}else{
if(null==orderEntity){
OrderEntity newCartOrder = new OrderEntity();
newCartOrder.setOrderid(sn);
newCartOrder.setOpenid(openId);
newCartOrder.setGoodsid(goodsid);
newCartOrder.setPaymode(1l);
newCartOrder.setStatus(0l);
newCartOrder.setPrice(coursePrice);
List
if(null!=orderEntityList){
//删除没有支付的订单及详情
for (OrderEntity orderEntity2 : orderEntityList) {
OrderDetailEntity orderDetailEntity=orderDetailDao.getorderDetail(orderEntity2.getId());
orderService.delete(orderEntity2);
if(null!=orderDetailEntity){
orderdetailService.delete(orderDetailEntity);
}
}
}
orderService.save(newCartOrder);
OrderDetailEntity orderDetail=new OrderDetailEntity();
orderDetail.setAuther(goodsInfomation.getAuther());
orderDetail.setAutherid(goodsInfomation.getAutherid());
orderDetail.setGoodsid(goodsid);
orderDetail.setGoodsname(goodsInfomation.getGoodname());
orderDetail.setPicture(goodsInfomation.getPicture());
orderDetail.setPprice(coursePrice);
orderDetail.setOrderid(newCartOrder.getId());
orderdetailService.save(orderDetail);
}else{
orderEntity.setId(orderEntity.getId());
orderService.saveOrUpdate(orderEntity);
}
//获取得到的结果传入前台页面 调起支付
String weixinappid=object.getString("appid");
String partnerid=object.getString("partnerid");
String packagewx=object.getString("package");
String noncestr=object.getString("noncestr");
String timestamp=object.getString("timestamp");
String sign=object.getString("sign");
request.setAttribute("appid", weixinappid);
//收款方
request.setAttribute("partnerid", partnerid);
request.setAttribute("package", packagewx);
request.setAttribute("noncestr", noncestr);
request.setAttribute("timestamp", timestamp);
request.setAttribute("sign", sign);
request.setAttribute("pprice", coursePrice);
request.setAttribute("orderid", sn);
request.setAttribute("openId", openId);
request.setAttribute("goodsid", goodsid);
request.setAttribute("type", type);
request.setAttribute("priceInterval", priceInterval);
request.setAttribute("picture", goodsInfomation.getPicture());
request.setAttribute("cxUrl", ConfigUtil.getProperty("weixin_cxUrl"));
request.setAttribute("appPictureUrl",ConfigUtil.getProperty("APP_Picture_url"));
//跳到支付页面
return new ModelAndView("weixin/guanjia/minimail/pay");
}
}
统一下单，获取签名，与调起时的二次生成签名
public class WinxinAppPrePay {
private PayCommonUtil payCommonUtil;
public String norifyUrl;
public Map
String description, String remoteAddr,String openid) {
SortedMap parameterMap = new TreeMap();
//公众账号ID
parameterMap.put("appid", this.payCommonUtil.getAppId());
//商户号
parameterMap.put("mch_id", this.payCommonUtil.getMchId());
//设备号
parameterMap.put("device_info", this.payCommonUtil.getDeviceInfo());
//随机字符串
parameterMap.put("nonce_str", this.payCommonUtil.getRandomString(32));
//签名类型
parameterMap.put("sign_type", "MD5");
try {
//如：小张南山店-超市
description = new String(description.getBytes("utf-8"));
} catch (UnsupportedEncodingException e1) {
e1.printStackTrace();
}
parameterMap.put("body",
StringUtils.abbreviate(description.replaceAll(
"[^0-9a-zA-Z\\u4e00-\\u9fa5 ]", ""), 600));
//商户订单号
parameterMap.put("out_trade_no", sn);
//用户标识
parameterMap.put("openid", openid);
//标价币种
parameterMap.put("fee_type", "CNY");
BigDecimal total = totalAmount.multiply(new BigDecimal(100));
DecimalFormat df = new DecimalFormat("0");
//标价金额
parameterMap.put("total_fee", df.format(total));
//终端IP
parameterMap.put("spbill_create_ip", remoteAddr);
//异步接收微信支付结果通知的回调地址，通知url必须为外网可访问的url，不能携带参数。
parameterMap.put("notify_url", this.norifyUrl);
//交易类型
parameterMap.put("trade_type", "JSAPI");
//通过签名算法计算得出的签名值，详见签名生成算法 第一次签名
String sign = this.payCommonUtil.createSign("UTF-8", parameterMap);
parameterMap.put("sign", sign);
//请求xml组装
String requestXML = this.payCommonUtil.getRequestXml(parameterMap);
System.out.println(requestXML);
//统一下单 获取prepay_id
String result = this.payCommonUtil.httpsRequest(
"https://api.mch.weixin.qq.com/pay/unifiedorder", "POST",
requestXML);
System.out.println(result);
Map map = null;
try {
map = this.payCommonUtil.doXMLParse(result);
} catch (IOException e) {
e.printStackTrace();
} catch (JDOMException e) {
e.printStackTrace();
}
return map;
}
public JSONObject getPayParam(Map
JSONObject payPamams = new JSONObject();
if ((map.containsKey("return_code"))
&& (((String) map.get("return_code")).equals("SUCCESS"))) {
String appid = (String) map.get("appid");
String partnerid = (String) map.get("mch_id");
String prepayid = (String) map.get("prepay_id");
String noncestr = this.payCommonUtil.getRandomString(32);
String timestamp = (System.currentTimeMillis() / 1000L) + "";
SortedMap parameterMap = new TreeMap();
parameterMap.put("appId", appid);
parameterMap.put("package", "prepay_id=" + prepayid);
//随机字符串
parameterMap.put("nonceStr", noncestr);
parameterMap.put("signType", "MD5");
parameterMap.put("timeStamp", timestamp);
System.out.println("签名准备参数"+parameterMap);
//二次签名 把下面红色字的信息返给统一下单那块，然后传到页面上
String sign = this.payCommonUtil.createSign("UTF-8", parameterMap);
payPamams.put("appid", appid);
//商户号
payPamams.put("partnerid", partnerid);
payPamams.put("package", "prepay_id=" + prepayid);
payPamams.put("noncestr", noncestr);
payPamams.put("timestamp", timestamp);
payPamams.put("signtype", "MD5");
//签名
payPamams.put("sign", sign);
System.out.println("生成签名后"+payPamams.getString("sign"));
return payPamams;
}
String return_msg = (String) map.get("return_msg");
payPamams.put("return_msg", return_msg);
return payPamams;
}
public PayCommonUtil getPayCommonUtil() {
return this.payCommonUtil;
}
public void setPayCommonUtil(PayCommonUtil payCommonUtil) {
this.payCommonUtil = payCommonUtil;
}
public String getNorifyUrl() {
return this.norifyUrl;
}
public void setNorifyUrl(String norifyUrl) {
this.norifyUrl = norifyUrl;
}
//支付页面
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@include file="/context/mytags.jsp"%>
支付金额：¥${pprice}