微信支付java

直接上代码：

1、支付配置PayCommonUtil

import com.legendshop.payment.tenpay.util.MD5Util; import com.legendshop.util.AppUtils; import javax.servlet.http.HttpServletRequest; import java.util.*; public class PayCommonUtil { /** * @Date: 2018/6/6 11:08 * @Descript: 因为公司app端与网页端商户号不一样，所以这里需要做一些判断 */ /* 微信公众号 */ public static final String appid_wap = "your appid"; public static final String MCHID_wap = "商户号"; /** * 微信原生 * appid 查看方法：登录微信商户平台（https://pay.weixin.qq.com/index.php/core/home/login） --> 营销中心 --> 支付后配置 */ public static final String appid = "your appid"; public static final String MCHID = "商户号"; public static final String notify_url = "你的通知接口地址"; /** * 两个商户号的key又是一样的，这里就共用一个变量。 * key 查看方法：登录微信商户平台 --> 账户中心 --> API安全 --> API密钥 */ public static final String key = "your key"; /** * 创建微信交易对象 */ public static SortedMap<Object, Object> getWXPrePayID(String tradeType, String openid) { SortedMap<Object, Object> parameters = new TreeMap<Object, Object>(); Boolean isWap = false; Boolean isWx = false; if (AppUtils.isNotBlank(tradeType)) { if (tradeType.equals("JSAPI")) { //微信浏览器内执行 isWx = true; isWap = true; } if (tradeType.equals("MWEB")) { //H5 isWap = true; } } parameters.put("appid", isWap ? appid_wap : appid); parameters.put("mch_id", isWap ? MCHID_wap : MCHID); parameters.put("nonce_str", createNoncestr()); parameters.put("fee_type", "CNY"); parameters.put("notify_url", notify_url); parameters.put("trade_type", AppUtils.isBlank(tradeType) ? "APP" : tradeType); if (isWx) { //微信浏览器内执行需要openid parameters.put("openid", openid); } return parameters; } /** * 再次签名（仅APP支付需要） */ public static SortedMap<Object, Object> startWXPay(Map map) { try { SortedMap<Object, Object> parameterMap = new TreeMap<Object, Object>(); parameterMap.put("appid", appid); parameterMap.put("partnerid", MCHID); parameterMap.put("prepayid", map.get("prepay_id")); parameterMap.put("package", "Sign=WXPay"); parameterMap.put("noncestr", createNoncestr()); // 本来生成的时间戳是13位，但是ios必须是10位，所以截取了一下 parameterMap.put("timestamp", Long.parseLong(String.valueOf(System.currentTimeMillis()).toString().substring(0, 10))); String sign = PayCommonUtil.createSign("UTF-8", parameterMap); parameterMap.put("sign", sign); return parameterMap; } catch (Exception e) { e.printStackTrace(); } return null; } /* * 获取真实IP * */ public static String getRemortIP(HttpServletRequest request) { if (request.getHeader("x-forwarded-for") == null) { return request.getRemoteAddr(); } return request.getHeader("x-forwarded-for"); } /** * 创建随机数 * * @param length * @return */ public static String createNoncestr() { 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; } /** * @param characterEncoding 编码格式 * @param parameters 请求参数 * @return * @Description：创建sign签名 */ public static String createSign(String characterEncoding, SortedMap<Object, Object> parameters) { StringBuffer sb = new StringBuffer(); Set es = parameters.entrySet(); Iterator it = es.iterator(); while (it.hasNext()) { Map.Entry entry = (Map.Entry) it.next(); String k = (String) entry.getKey(); Object v = entry.getValue(); if (null != v && !"".equals(v) && !"sign".equals(k) && !"key".equals(k)) { sb.append(k + "=" + v + "&"); } } sb.append("key=" + key); String sign = MD5Util.MD5Encode(sb.toString(), characterEncoding).toUpperCase(); return sign; } }