新微信支付接口demo

package com.servlet; import java.io.IOException; import java.util.HashMap; import java.util.Map; import java.util.SortedMap; import java.util.TreeMap; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import net.sf.json.JSONObject; import com.utils.GetWxOrderno; import com.utils.RequestHandler; import com.utils.Sha1Util; import com.utils.TenpayUtil; import com.utils.http.HttpConnect; import com.utils.http.HttpResponse; public class TopayServlet extends HttpServlet { /** * The doGet method of the servlet. <br> * * This method is called when a form has its tag value method equals to get. * * @param request the request send by the client to the server * @param response the response send by the server to the client * @throws ServletException if an error occurred * @throws IOException if an error occurred */ public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { System.out.println("TopayServlet进来了-----"); //网页授权后获取传递的参数 String userId = request.getParameter("userId"); String orderNo = request.getParameter("orderNo"); String money = request.getParameter("money"); String code = request.getParameter("code"); //传过来的金额为元单位的小数，需转换为分单位 float sessionmoney = Float.parseFloat(money); String finalmoney = String.format("%.2f", sessionmoney); finalmoney = finalmoney.replace(".", ""); //商户相关资料 String appid = ""; String appsecret = ""; String partner = ""; String partnerkey = ""; String key = ""; String openId =""; String URL = "https://api.weixin.qq.com/sns/oauth2/access_token?appid="+appid+"&secret="+appsecret+"&code="+code+"&grant_type=authorization_code"; Map<String, Object> dataMap = new HashMap<String, Object>(); HttpResponse temp = HttpConnect.getInstance().doGetStr(URL); String tempValue=""; if( temp == null){ response.sendRedirect("/weChatpay/error.jsp"); }else { try { tempValue = temp.getStringResult(); } catch (Exception e) { e.printStackTrace(); } JSONObject jsonObj = JSONObject.fromObject(tempValue); if(jsonObj.containsKey("errcode")){ System.out.println(tempValue); response.sendRedirect("/weChatpay/error.jsp"); } openId = jsonObj.getString("openid"); } //获取openId后调用统一支付接口https://api.mch.weixin.qq.com/pay/unifiedorder 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。 String strReq = strTime + strRandom; //商户号 String mch_id = partner; //子商户号 非必输 // String sub_mch_id=""; //设备号 非必输 String device_info=""; //随机数 String nonce_str = strReq; //商品描述 // String body = describe; //商品描述根据情况修改 String body = "美食"; //附加数据,原样返回 String attach = userId; //商户订单号 String out_trade_no = orderNo; int intMoney = Integer.parseInt(finalmoney); //总金额以分为单位，不带小数点 int total_fee = intMoney; //订单生成的机器 IP String spbill_create_ip = request.getRemoteAddr(); //订 单 生 成 时 间 非必输 // String time_start =""; //订单失效时间 非必输 // String time_expire = ""; //商品标记 非必输 // String goods_tag = ""; //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 ="http://............../index.jsp"; String trade_type = "JSAPI"; String openid = openId; System.out.println("-----------------openid-----------"+openId); //非必输 // String product_id = ""; SortedMap<String, String> packageParams = new TreeMap<String, String>(); packageParams.put("appid", appid); packageParams.put("mch_id", 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", "1"); packageParams.put("total_fee", finalmoney); packageParams.put("spbill_create_ip", spbill_create_ip); packageParams.put("notify_url", notify_url); packageParams.put("trade_type", trade_type); packageParams.put("openid", openid); packageParams.put("key", key); RequestHandler reqHandler = new RequestHandler(request, response); reqHandler.init(appid, appsecret, partnerkey); String sign = reqHandler.createSign(packageParams); String xml="<xml>"+ "<appid>"+appid+"</appid>"+ "<mch_id>"+mch_id+"</mch_id>"+ "<nonce_str>"+nonce_str+"</nonce_str>"+ "<body><![CDATA["+body+"]]></body>"+ "<attach><![CDATA["+attach+"]]></attach>"+ "<out_trade_no>"+out_trade_no+"</out_trade_no>"+ //金额 "<total_fee>"+finalmoney+"</total_fee>"+ "<spbill_create_ip>"+spbill_create_ip+"</spbill_create_ip>"+ "<notify_url>"+notify_url+"</notify_url>"+ "<trade_type>"+trade_type+"</trade_type>"+ "<openid>"+openid+"</openid>"+ "<sign><![CDATA["+sign+"]]></sign>"+ "</xml>"; System.out.println(xml); String allParameters = ""; try { allParameters = reqHandler.genPackage(packageParams); } catch (Exception e) { e.printStackTrace(); } String createOrderURL = "https://api.mch.weixin.qq.com/pay/unifiedorder"; Map<String, Object> dataMap2 = new HashMap<String, Object>(); String prepay_id=""; try { prepay_id = new GetWxOrderno().getPayNo(createOrderURL, xml); if(prepay_id.equals("")){ request.setAttribute("ErrorMsg", "统一支付接口获取预支付订单出错"); response.sendRedirect("/weChatpay/error.jsp"); } } catch (Exception e1) { e1.printStackTrace(); } SortedMap<String, String> finalpackage = new TreeMap<String, String>(); String appid2 = appid; String timestamp = Sha1Util.getTimeStamp(); String nonceStr2 = nonce_str; String prepay_id2 = "prepay_id="+prepay_id; String packages = prepay_id2; finalpackage.put("appId", appid2); finalpackage.put("timeStamp", timestamp); finalpackage.put("nonceStr", nonceStr2); finalpackage.put("package", packages); finalpackage.put("signType", "MD5"); finalpackage.put("key",key); String finalsign = reqHandler.createSign(finalpackage); response.sendRedirect("/weChatpay/pay.jsp?appid="+appid2+"&timeStamp="+timestamp+"&nonceStr="+nonceStr2+"&package="+packages+"&sign="+finalsign); } /** * The doPost method of the servlet. <br> * * This method is called when a form has its tag value method equals to post. * * @param request the request send by the client to the server * @param response the response send by the server to the client * @throws ServletException if an error occurred * @throws IOException if an error occurred */ public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response); } }