微信退款接口

package com.tanie.db.utils;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Random;
import java.util.Set;
import java.util.SortedMap;
import java.util.TreeMap;

import javax.annotation.Resource;
import javax.net.ssl.SSLContext;

import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLContexts;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import org.hibernate.SQLQuery;
import org.hibernate.SessionFactory;
import org.hibernate.classic.Session;
import org.hibernate.transform.Transformers;

import com.tanie.fenxiao.action.BaseAction;
import com.unstoppedable.common.Configure;
import com.unstoppedable.common.MD5;

public class Wxrefund {

	public Boolean refund(String no) throws Exception {
		// Session sqlSession = sessionFactory.openSession();
		// q.setResultTransformer(Transformers.ALIAS_TO_ENTITY_MAP);
		// SQLQuery q = sqlSession.createSQLQuery("select * from pay_record where
		// outTradeNo='"+no+"'");
		// q.setResultTransformer(Transformers.ALIAS_TO_ENTITY_MAP);
		// Map obj = (Map) q.uniqueResult();
		Map obj = new HashMap();
		Configure cif = new Configure();
		SortedMap<Object, Object> parameters = new TreeMap<Object, Object>();
		parameters.put("appid", cif.getAppid());
		parameters.put("mch_id", cif.getMchid());
		parameters.put("nonce_str", CreateNoncestr());
		// 在notify_url中解析微信返回的信息获取到 transaction_id，此项不是必填，详细请看上图文档
		parameters.put("transaction_id", obj.get("transactionId"));
		parameters.put("out_trade_no", obj.get("outTradeNo"));
		parameters.put("out_refund_no", obj.get("outTradeNo")); // 我们自己设定的退款申请号，约束为UK
		parameters.put("total_fee", obj.get("totalFee")); // 单位为分
		parameters.put("refund_fee", obj.get("cashFee")); // 单位为分
		parameters.put("op_user_id", cif.getMchid());
		String sign = createSign("utf-8", parameters);
		parameters.put("sign", sign);

		String reuqestXml = getRequestXml(parameters);
		KeyStore keyStore = KeyStore.getInstance("PKCS12");
		FileInputStream instream = new FileInputStream(new File(cif.getCertLocalPath()));// 放退款证书的路径
		try {
			keyStore.load(instream, cif.getMchid().toCharArray());
		} finally {
			instream.close();
		}
		SSLContext sslcontext = SSLContexts.custom().loadKeyMaterial(keyStore, cif.getMchid().toCharArray()).build();
		SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(sslcontext, new String[] { "TLSv1" }, null,
				SSLConnectionSocketFactory.BROWSER_COMPATIBLE_HOSTNAME_VERIFIER);
		CloseableHttpClient httpclient = HttpClients.custom().setSSLSocketFactory(sslsf).build();
		try {
			HttpPost httpPost = new HttpPost(cif.REFUND_API);// 退款接口

			System.out.println("executing request" + httpPost.getRequestLine());
			StringEntity reqEntity = new StringEntity(reuqestXml);
			// 设置类型
			reqEntity.setContentType("application/x-www-form-urlencoded");
			httpPost.setEntity(reqEntity);
			CloseableHttpResponse response = httpclient.execute(httpPost);
			try {
				HttpEntity entity = response.getEntity();
				System.out.println("----------------------------------------");
				System.out.println(response.getStatusLine());
				if (entity != null) {
					System.out.println("Response content length: " + entity.getContentLength());
					BufferedReader bufferedReader = new BufferedReader(
							new InputStreamReader(entity.getContent(), "UTF-8"));
					String text;
					while ((text = bufferedReader.readLine()) != null) {
						System.out.println(text);
					}

				}
				EntityUtils.consume(entity);
			} finally {
				response.close();
			}
		} finally {
			httpclient.close();
		}

		return null;

	}

	public static String CreateNoncestr() {
		String chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456709";
		String res = "";
		for (int i = 0; i < 16; i++) {
			Random rd = new Random();
			res += chars.charAt(rd.nextInt(chars.length() - 1));
		}
		return res;
	}

	public static String createSign(String charSet, 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=" + "TyqLcsKvjEAsl1Agel0EuXekoa83mQ62");
		String sign = MD5.MD5Encode(sb.toString()).toUpperCase();
		return sign;
	}

	public static String getRequestXml(SortedMap<Object, Object> parameters) {
		StringBuffer sb = new StringBuffer();
		sb.append("<xml>");
		Set es = parameters.entrySet();
		Iterator it = es.iterator();
		while (it.hasNext()) {
			Map.Entry entry = (Map.Entry) it.next();
			String k = (String) entry.getKey();
			String v = (String) entry.getValue();
			if ("attach".equalsIgnoreCase(k) || "body".equalsIgnoreCase(k) || "sign".equalsIgnoreCase(k)) {
				sb.append("<" + k + ">" + "<![CDATA[" + v + "]]></" + k + ">");
			} else {
				sb.append("<" + k + ">" + v + "</" + k + ">");
			}
		}
		sb.append("</xml>");
		return sb.toString();
	}

}