微信公众号支付demo（未封装）

package pay; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.io.StringReader; import java.security.KeyStore; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Random; import java.util.SortedMap; import java.util.TreeMap; import java.util.UUID; import javax.net.ssl.SSLContext; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.HttpStatus; import org.apache.http.client.HttpClient; 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.DefaultHttpClient; import org.apache.http.impl.client.HttpClients; import org.apache.http.util.EntityUtils; import org.jdom.Document; import org.jdom.Element; import org.jdom.input.SAXBuilder; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.servlet.ModelAndView; import org.xml.sax.InputSource; import com.fasterxml.jackson.databind.ObjectMapper; import http.HttpClientConnectionManager; import util.MD5; import util.RequestHandler; /** * 类名称：WechatActivityController * 创建人：aofavx * 创建时间：2016-08-03 */ @Controller @RequestMapping(value="/wc") public class WechatActivityController { String GZHID = "";// 微信公众号id String GZHSecret = "";// 微信公众号密钥id String SHHID = "";// 财付通商户号 String SHHKEY = "";// 商户号对应的密钥 public static String getUuid(){ UUID uuid=UUID.randomUUID(); String uuidStr=uuid.toString(); uuidStr=uuidStr.replace("-", ""); return uuidStr; } /** * 用户提交支付，获取微信支付订单接口 */ @RequestMapping(value="/pay.do") public ModelAndView pay(HttpServletRequest request,HttpServletResponse response){ System.out.println("-------------------pay.do returnurl-----------------"); ModelAndView mv = new ModelAndView(); /*------1.获取参数信息------- */ //商户订单号 String out_trade_no= request.getParameter("state"); System.out.println(out_trade_no+"-------------订单号"); //价格 String money = request.getParameter("money"); System.out.println(money+"-------------money"); //金额转化为分为单位 String finalmoney = WeChat.getMoney(money); //获取用户的code String code = request.getParameter("code"); System.out.println(code+"-------------code"); /*------2.根据code获取微信用户的openId和access_token------- */ //注： 如果后台程序之前已经得到了用户的openId 可以不需要这一步，直接从存放openId的位置或session中获取就可以。 //提交的url路径也就不需要再经过微信重定向。写成：http://localhost:8080/项目名/wechat/pay?money=${sumPrice}&state=${orderId} String openid=null; try { List<Object> list = accessToken(code); openid=list.get(1).toString(); System.out.println(openid+"--------------openid"); } catch (IOException e) { // logger.error("根据code获取微信用户的openId出现错误", e); mv.setViewName("error"); return mv; } /*------3.生成预支付订单需要的的package数据------- */ //随机数 String nonce_str= MD5.getMessageDigest(String.valueOf(new Random().nextInt(10000)).getBytes()); System.out.println(nonce_str+"-------------------nonce_str"); //订单生成的机器 IP String spbill_create_ip = request.getRemoteAddr(); System.out.println(spbill_create_ip+"-------------------spbill_create_ip"); //交易类型 ：jsapi代表微信公众号支付 String trade_type = "JSAPI"; //这里notify_url是 微信处理完支付后的回调的应用系统接口url。 String notify_url ="http://www.moodgame.cn/WX/wc/weixinNotify.do"; SortedMap<String, String> packageParams = new TreeMap<String, String>(); packageParams.put("appid", GZHID); packageParams.put("mch_id", SHHID); packageParams.put("nonce_str", nonce_str); packageParams.put("body", "费用"); packageParams.put("out_trade_no", out_trade_no); 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); /*------4.根据package数据生成预支付订单号的签名sign------- */ RequestHandler reqHandler = new RequestHandler(request, response); reqHandler.init( GZHID, GZHSecret, SHHKEY); String sign = reqHandler.createSign(packageParams); System.out.println(sign+"----------sign"); /*------5.生成需要提交给统一支付接口https://api.mch.weixin.qq.com/pay/unifiedorder 的xml数据-------*/ String xml="<xml>"+ "<appid>"+ GZHID+"</appid>"+ "<mch_id>"+ SHHID+"</mch_id>"+ "<nonce_str>"+nonce_str+"</nonce_str>"+ "<sign>"+sign+"</sign>"+ "<body><![CDATA["+"费用"+"]]></body>"+ "<out_trade_no>"+out_trade_no+"</out_trade_no>"+ "<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>"+ "</xml>"; /*------6.调用统一支付接口https://api.mch.weixin.qq.com/pay/unifiedorder 生产预支付订单----------*/ String createOrderURL = "https://api.mch.weixin.qq.com/pay/unifiedorder"; String prepay_id=""; try { prepay_id = GetWxOrderno.getPayNo(createOrderURL, xml); System.out.println(prepay_id+"--------------------prepay_id"); if(prepay_id.equals("")){ mv.addObject("ErrorMsg", "支付错误"); mv.setViewName("error"); return mv; } } catch (Exception e) { // logger.error("统一支付接口获取预支付订单出错", e); mv.setViewName("error"); return mv; } /*将prepay_id存到库中*/ /*PageData p = new PageData(); p.put("shopId", out_trade_no); p.put("prePayId", prepay_id); activityService.updatePrePayId(p);*/ /*------7.将预支付订单的id和其他信息生成签名并一起返回到jsp页面 ------- */ nonce_str= MD5.getMessageDigest(String.valueOf(new Random().nextInt(10000)).getBytes()); SortedMap<String, String> finalpackage = new TreeMap<String, String>(); String timestamp = String.valueOf(System.currentTimeMillis() / 1000); System.out.println(timestamp+"-------timestamp"); String packages = "prepay_id="+prepay_id; finalpackage.put("appId", GZHID); finalpackage.put("timeStamp", timestamp); finalpackage.put("nonceStr", nonce_str); finalpackage.put("package", packages); finalpackage.put("signType", "MD5"); String finalsign = reqHandler.createSign(finalpackage); mv.addObject("appid", GZHID); mv.addObject("timeStamp", timestamp); mv.addObject("nonceStr", nonce_str); mv.addObject("packageValue", packages); mv.addObject("paySign", finalsign); mv.addObject("success","ok"); mv.setViewName("pay"); return mv; } /** * 提交支付后的微信异步返回接口 */ @RequestMapping(value="/weixinNotify.do") public String weixinNotify(HttpServletRequest request, HttpServletResponse response){ System.out.println("--------------notify-------------"); String out_trade_no=null; String return_code =null;