weixin.popular.util.PayUtil Maven / Gradle / Ivy

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package weixin.popular.util;

import java.security.Key;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.UUID;

import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;

import org.apache.commons.codec.binary.Base64;
import org.apache.commons.codec.digest.DigestUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.qq.weixin.mp.aes.PKCS7Encoder;

import weixin.popular.bean.paymch.MchPayApp;
import weixin.popular.bean.paymch.MchPayNativeReply;
import weixin.popular.bean.paymch.PapayEntrustweb;
import weixin.popular.bean.paymch.RefundNotifyReqInfo;

public class PayUtil {
	
	private static Logger logger = LoggerFactory.getLogger(PayUtil.class);

	/**
	 * (MCH)生成支付JS请求对象
	 * 
	 * @param prepay_id
	 *            预支付订单号
	 * @param appId
	 *            appId
	 * @param key
	 *            商户支付密钥
	 * @return json
	 */
	public static String generateMchPayJsRequestJson(String prepay_id, String appId, String key) {
		String package_ = "prepay_id=" + prepay_id;
		Map map = new LinkedHashMap();
		map.put("appId", appId);
		map.put("nonceStr", UUID.randomUUID().toString().replace("-", ""));
		map.put("package", package_);
		map.put("signType", "MD5");
		map.put("timeStamp", System.currentTimeMillis() / 1000 + "");
		String paySign = SignatureUtil.generateSign(map, key);
		map.put("paySign", paySign);
		return JsonUtil.toJSONString(map);
	}

	/**
	 * (MCH)生成Native支付请求URL
	 * 
	 * @param appid
	 *            appid
	 * @param mch_id
	 *            mch_id
	 * @param productid
	 *            productid
	 * @param key
	 *            key
	 * @return url
	 */
	public static String generateMchPayNativeRequestURL(String appid, String mch_id, String productid, String key) {
		Map map = new LinkedHashMap();
		map.put("appid", appid);
		map.put("mch_id", mch_id);
		map.put("time_stamp", System.currentTimeMillis() / 1000 + "");
		map.put("nonce_str", UUID.randomUUID().toString().replace("-", ""));
		map.put("product_id", productid);
		String sign = SignatureUtil.generateSign(map, key);
		map.put("sign", sign);
		return "weixin://wxpay/bizpayurl?" + MapUtil.mapJoin(map, false, false);
	}

	/**
	 * (MCH)生成 native 支付回复XML
	 * 
	 * @param mchPayNativeReply
	 *            mchPayNativeReply
	 * @param key
	 *            key
	 * @return xml
	 */
	public static String generateMchPayNativeReplyXML(MchPayNativeReply mchPayNativeReply, String key) {
		Map map = MapUtil.objectToMap(mchPayNativeReply);
		String sign = SignatureUtil.generateSign(map, key);
		mchPayNativeReply.setSign(sign);
		return XMLConverUtil.convertToXML(mchPayNativeReply);
	}

	/**
	 * (MCH)生成支付APP请求数据
	 * 
	 * @param prepay_id
	 *            预支付订单号
	 * @param appId
	 *            appId
	 * @param partnerid
	 *            商户平台号
	 * @param key
	 *            商户支付密钥
	 * @return app data
	 */
	public static MchPayApp generateMchAppData(String prepay_id, String appId, String partnerid, String key) {
		Map wx_map = new LinkedHashMap();
		wx_map.put("appid", appId);
		wx_map.put("partnerid", partnerid);
		wx_map.put("prepayid", prepay_id);
		wx_map.put("package", "Sign=WXPay");
		wx_map.put("noncestr", UUID.randomUUID().toString().replace("-", ""));
		wx_map.put("timestamp", System.currentTimeMillis() / 1000 + "");
		String sign = SignatureUtil.generateSign(wx_map, key);
		MchPayApp mchPayApp = new MchPayApp();
		mchPayApp.setAppid(appId);
		mchPayApp.setPartnerid(partnerid);
		mchPayApp.setPrepayid(prepay_id);
		mchPayApp.setPackage_(wx_map.get("package"));
		mchPayApp.setNoncestr(wx_map.get("noncestr"));
		mchPayApp.setTimestamp(wx_map.get("timestamp"));
		mchPayApp.setSign(sign);
		return mchPayApp;
	}

	/**
	 * 生成代扣签约URL
	 * 
	 * @param papayEntrustweb
	 *            papayEntrustweb
	 * @param key
	 *            key
	 * @return url
	 */
	public static String generatePapayEntrustwebURL(PapayEntrustweb papayEntrustweb, String key) {
		Map map = MapUtil.objectToMap(papayEntrustweb);
		String sign = SignatureUtil.generateSign(map, key);
		map.put("sign", sign);
		String params = MapUtil.mapJoin(map, false, true);
		return "https://api.mch.weixin.qq.com/papay/entrustweb?" + params;
	}

	/**
	 * 解密退款结果通知数据 

	 * 
	 * 
	 * 解密失败解决方案：在官方网站下载JCE无限制权限策略文件（请到官网下载对应的版本) ,下载后解压。

	 * 可以看到local_policy.jar和US_export_policy.jar以及readme.txt，

	 * 将两个jar文件放到%JDK_HOME%\jre\lib\security目录下覆盖原来文件

	 * 
	 * JCE7 http://www.oracle.com/technetwork/java/javase/downloads/jce-7-download-432124.html

	 * JCE8 http://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html
	 * 
	 * 
	 * @since 2.8.19
	 * 
	 * @param req_info
	 *            加密数据
	 * @param key
	 *            支付key
	 * @return RefundNotifyReqInfo 解密失败返回 Null
	 */
	public static RefundNotifyReqInfo decryptRefundNotifyReqInfo(String req_info, String key) {
		try {
			Cipher cipher = Cipher.getInstance("AES/ECB/NoPadding");
			Key sKeySpec = new SecretKeySpec(DigestUtils.md5Hex(key).getBytes(), "AES");
			cipher.init(Cipher.DECRYPT_MODE, sKeySpec);
			byte[] resultByte = cipher.doFinal(Base64.decodeBase64(req_info));
			String data = new String(PKCS7Encoder.decode(resultByte));
			return XMLConverUtil.convertToObject(RefundNotifyReqInfo.class, data);
		} catch (Exception e) {
			logger.error("", e);
		}
		return null;
	}
}