java实现微信退款

package com.bantu.ssm.service.impl.wx; import java.io.ByteArrayInputStream; import java.io.InputStream; import java.text.SimpleDateFormat; import java.util.Date; import java.util.HashMap; import java.util.List; import java.util.Map; import org.apache.http.conn.ssl.SSLConnectionSocketFactory; import org.dom4j.Document; import org.dom4j.Element; import org.dom4j.io.SAXReader; import org.springframework.stereotype.Service; import com.bantu.ssm.entity.wx.RefundPay; import com.bantu.ssm.service.wx.RefundPayService; import com.bantu.ssm.util.MessageUtil; import com.bantu.ssm.util.RoundUtil; import com.bantu.ssm.util.wx.DefinedChars; import com.bantu.ssm.util.wx.GetSSL; import com.bantu.ssm.util.wx.PayUtil; @Service public class RefundPayServiceImpl implements RefundPayService { /** * 微信退款 */ @Override public Map refund() throws Exception { Integer orderid = 12121; Integer payOrder_fee = 20; System.out.println("》》》启动退款接口 传入参数为：[订单id:" + orderid + "]"); // Order order = os.findOne(orderid);// 获取需要退款的订单 // 封装退款参数 RefundPay refundPay = new RefundPay(); refundPay.setAppid(DefinedChars.XCXAPPID);//微信分配的小程序ID refundPay.setMch_id(DefinedChars.MCH_ID); refundPay.setNonce_str(RoundUtil.getUUID32()); refundPay.setOp_user_id(DefinedChars.MCH_ID);// 操作员默认为商户号 String mch_id = DefinedChars.MCH_ID; String today = new SimpleDateFormat("yyyyMMddHHmmss").format(new Date()); String code = PayUtil.createCode(8); String out_trade_no = mch_id + today + code;// 商户订单号 refundPay.setOut_trade_no(out_trade_no);// 商户订单号 refundPay.setOut_refund_no("refund" + mch_id + today + code);// 商户退款号 refundPay.setRefund_fee(payOrder_fee);// 退款金额 refundPay.setTotal_fee(payOrder_fee);// 订单金额 // 把请求参数打包成Map Map<String, String> refp = new HashMap<String, String>(); refp.put("appid", refundPay.getAppid()); refp.put("mch_id", refundPay.getMch_id()); refp.put("nonce_str", refundPay.getNonce_str()); refp.put("op_user_id", refundPay.getOp_user_id()); refp.put("out_trade_no", refundPay.getOut_trade_no()); refp.put("out_refund_no", refundPay.getOut_refund_no()); refp.put("total_fee", refundPay.getTotal_fee().toString()); refp.put("refund_fee", refundPay.getRefund_fee().toString()); // 除去Map中的空值和签名参数 Map<String, String> ref = PayUtil.paraFilter(refp); String preStr = PayUtil.createLinkString(ref); String key = "&key=" + DefinedChars.API_Key; // 商户支付密钥 // MD5运算生成签名 String mysign = PayUtil.sign(preStr, key, "utf-8").toUpperCase(); System.out.println(">>>生成签名为：" + mysign); refundPay.setSign(mysign); String respXml = MessageUtil.refundPayToXML(refundPay); System.out.println(">>>打包要发送的xml为:\n" + respXml); respXml = respXml.replace("__", "_"); String url = DefinedChars.REFUND; String param = respXml; SSLConnectionSocketFactory ssl = GetSSL.getSSL(); String result = PayUtil.sslPost(url, param, ssl); System.out.println("微信返回结果为：" + result); // 将解析结果存储在HashMap中 Map<String, String> map = new HashMap<String, String>(); InputStream in = new ByteArrayInputStream(result.getBytes()); // 读取输入流 SAXReader reader = new SAXReader(); reader.setEncoding("GB2312");// 这里设置文件编码 Document document = reader.read(in); // System.out.println(document.toString()); // 得到xml根元素 Element root = document.getRootElement(); // 得到根元素的所有子节点 List<Element> elementList = root.elements(); for (Element element : elementList) { map.put(element.getName(), element.getText()); } // 返回信息 String return_code = map.get("return_code");// 返回状态码 String return_msg = map.get("return_msg");// 返回信息 String result_code = map.get("result_code"); String refund_id = map.get("refund_id");//微信退款单号 System.out.println(">>>微信返回信息return_msg：" + return_msg); /* if ("SUCCESS".equals(return_code)) { if ("SUCCESS".equals(result_code)) { RefundPayPo rpp = new RefundPayPo(refundPay); System.out.println(">>>退款成功,春村退款信息"); order.setStatus(-1);// 订单状态改为卖家拒绝 os.save(order); rpp.setRefundId(map.get("refund_id")); RefundPayPo res = rps.save(rpp); System.out.println(">>>储存结果为" + res);*/ return map; /*} else { System.out.println(">>>退款失败，错误信息为：" + map.get("err_code_des")); return map.get("err_code_des"); } } else { return return_msg; }*/ } }