微信支付V3 Java jsApi 扫码支付
本文介绍微信扫码支付，附带demo： wisdomdd.cn
package com.demo;
import java.util.SortedMap;
import java.util.TreeMap;
import com.utils.GetWxOrderno;
import com.utils.RequestHandler;
import com.utils.Sha1Util;
import com.utils.TenpayUtil;
/**
* @author ex_yangxiaoyi
*
*/
public class Demo {
//微信支付商户开通后 微信会提供appid和appsecret和商户号partner
private static String appid = "";
private static String appsecret = "";
private static String partner = "";
//这个参数partnerkey是在商户后台配置的一个32位的key,微信商户平台-账户设置-安全设置-api安全
private static String partnerkey = "";
//openId 是微信用户针对公众号的标识，授权的部分这里不解释
private static String openId = "";
//微信支付成功后通知地址 必须要求80端口并且地址不能带参数
private static String notifyurl = ""; // Key
/**
* @param args
*/
public static void main(String[] args) {
//微信支付jsApi
WxPayDto tpWxPay = new WxPayDto();
tpWxPay.setOpenId(openId);
tpWxPay.setBody("商品信息");
tpWxPay.setOrderId(getNonceStr());
tpWxPay.setSpbillCreateIp("127.0.0.1");
tpWxPay.setTotalFee("0.01");
getPackage(tpWxPay);
//扫码支付
WxPayDto tpWxPay1 = new WxPayDto();
tpWxPay1.setBody("商品信息");
tpWxPay1.setOrderId(getNonceStr());
tpWxPay1.setSpbillCreateIp("127.0.0.1");
tpWxPay1.setTotalFee("0.01");
getCodeurl(tpWxPay1);
}
/**
* 获取微信扫码支付二维码连接
*/
public static String getCodeurl(WxPayDto tpWxPayDto){
// 子商户号
String sub_mch_id = tpWxPayDto.getSubMchId();
// 订单号
String orderId = tpWxPayDto.getOrderId();
// 附加数据 原样返回
String attach = "";
// 总金额以分为单位，不带小数点
String totalFee = getMoney(tpWxPayDto.getTotalFee());
// 订单生成的机器 IP
String spbill_create_ip = tpWxPayDto.getSpbillCreateIp();
// 这里notify_url是 支付完成后微信发给该链接信息，可以判断会员是否支付成功，改变订单状态等。
String notify_url = notifyurl;
String trade_type = "NATIVE";
// 商户号
String mch_id = partner;
// 随机字符串
String nonce_str = getNonceStr();
// 商品描述根据情况修改
String body = tpWxPayDto.getBody();
// 商户订单号
String out_trade_no = orderId;
SortedMap packageParams = new TreeMap();
packageParams.put("appid", appid);
packageParams.put("mch_id", mch_id);
packageParams.put("sub_mch_id", sub_mch_id);
packageParams.put("nonce_str", nonce_str);
packageParams.put("body", body);
packageParams.put("attach", attach);
packageParams.put("out_trade_no", out_trade_no);
// 这里写的金额为1 分到时修改
packageParams.put("total_fee", totalFee);
packageParams.put("spbill_create_ip", spbill_create_ip);
packageParams.put("notify_url", notify_url);
packageParams.put("trade_type", trade_type);
RequestHandler reqHandler = new RequestHandler(null, null);
reqHandler.init(appid, appsecret, partnerkey);
String sign = reqHandler.createSign(packageParams);
String xml = "" "" appid " " ""
mch_id " " "" sub_mch_id
" " "" nonce_str
" " "" sign " "
""
"" out_trade_no
" " "" attach " "
"" totalFee " "
"" spbill_create_ip
" " "" notify_url
" " "" trade_type
" " " ";
String code_url = "";
String createOrderURL = "https://api.mch.weixin.qq.com/pay/unifiedorder";
code_url = new GetWxOrderno().getCodeUrl(createOrderURL, xml);
System.out.println("code_url----------------" code_url);
return code_url;
}
/**
* 获取请求预支付id报文
* @return
*/
@SuppressWarnings("static-access")
public static String getPackage(WxPayDto tpWxPayDto) {
String openId = tpWxPayDto.getOpenId();
// 子商户号
String sub_mch_id = tpWxPayDto.getSubMchId();
// 订单号
String orderId = tpWxPayDto.getOrderId();
// 附加数据 原样返回
String attach = "";
// 总金额以分为单位，不带小数点
String totalFee = getMoney(tpWxPayDto.getTotalFee());
// 订单生成的机器 IP
String spbill_create_ip = tpWxPayDto.getSpbillCreateIp();
// 这里notify_url是 支付完成后微信发给该链接信息，可以判断会员是否支付成功，改变订单状态等。
String notify_url = notifyurl;
String trade_type = "JSAPI";
// ---必须参数
// 商户号
String mch_id = partner;
// 随机字符串
String nonce_str = getNonceStr();
// 商品描述根据情况修改
String body = tpWxPayDto.getBody();
// 商户订单号
String out_trade_no = orderId;
SortedMap packageParams = new TreeMap();
packageParams.put("appid", appid);
packageParams.put("mch_id", mch_id);
packageParams.put("sub_mch_id", sub_mch_id);
packageParams.put("nonce_str", nonce_str);
packageParams.put("body", body);
packageParams.put("attach", attach);
packageParams.put("out_trade_no", out_trade_no);
// 这里写的金额为1 分到时修改
packageParams.put("total_fee", totalFee);
packageParams.put("spbill_create_ip", spbill_create_ip);
packageParams.put("notify_url", notify_url);
packageParams.put("trade_type", trade_type);
packageParams.put("openid", openId);
RequestHandler reqHandler = new RequestHandler(null, null);
reqHandler.init(appid, appsecret, partnerkey);
String sign = reqHandler.createSign(packageParams);
String xml = "" "" appid " " ""
mch_id " " "" nonce_str
" " "" sign " "
""
"" out_trade_no
" " "" attach " "
"" totalFee " "
"" spbill_create_ip
" " "" notify_url
" " "" trade_type
" " "" openId " "
" ";
String prepay_id = "";
String createOrderURL = "https://api.mch.weixin.qq.com/pay/unifiedorder";
prepay_id = new GetWxOrderno().getPayNo(createOrderURL, xml);
System.out.println("获取到的预支付ID：" prepay_id);
//获取prepay_id后，拼接最后请求支付所需要的package
SortedMap finalpackage = new TreeMap();
String timestamp = Sha1Util.getTimeStamp();
String packages = "prepay_id=" prepay_id;
finalpackage.put("appId", appid);
finalpackage.put("timeStamp", timestamp);
finalpackage.put("nonceStr", nonce_str);
finalpackage.put("package", packages);
finalpackage.put("signType", "MD5");
//要签名
String finalsign = reqHandler.createSign(finalpackage);
String finaPackage = "\"appId\":\"" appid "\",\"timeStamp\":\"" timestamp
"\",\"nonceStr\":\"" nonce_str "\",\"package\":\""
packages "\",\"signType\" : \"MD5" "\",\"paySign\":\""
finalsign "\"";
System.out.println("V3 jsApi package:" finaPackage);
return finaPackage;
}
/**
* 获取随机字符串
* @return
*/
public static String getNonceStr() {
// 随机数
String currTime = TenpayUtil.getCurrTime();
// 8位日期
String strTime = currTime.substring(8, currTime.length());
// 四位随机数
String strRandom = TenpayUtil.buildRandom(4) "";
// 10位序列号,可以自行调整。
return strTime strRandom;
}
/**
* 元转换成分
* @param money
* @return
*/
public static String getMoney(String amount) {
if(amount==null){
return "";
}
// 金额转化为分为单位
String currency = amount.replaceAll("\\$|\\￥|\\,", ""); //处理包含, ￥ 或者$的金额
int index = currency.indexOf(".");
int length = currency.length();
Long amLong = 0l;
if(index == -1){
amLong = Long.valueOf(currency "00");
}else if(length - index >= 3){
amLong = Long.valueOf((currency.substring(0, index 3)).replace(".", ""));
}else if(length - index == 2){
amLong = Long.valueOf((currency.substring(0, index 2)).replace(".", "") 0);
}else{
amLong = Long.valueOf((currency.substring(0, index 1)).replace(".", "") "00");
}
return amLong.toString();
}
}