微信支付05

 1  protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
 2         req.setCharacterEncoding("utf-8");
 3         resp.setCharacterEncoding("utf-8");
 4         
 5         SortedMap<String,String> map = XmlUtils.getParameterMap(req);
 6         System.out.println(XmlUtils.toXml(map));
 7         String key = SwiftpassConfig.key;
 8         String res = null;
 9         String reqUrl = SwiftpassConfig.req_url;
10         map.put("mch_id", SwiftpassConfig.mch_id);
11         map.put("nonce_str", String.valueOf(new Date().getTime()));
12         
13         Map<String,String> params = SignUtils.paraFilter(map);
14         StringBuilder buf = new StringBuilder((params.size() +1) * 10);
15         SignUtils.buildPayParams(buf,params,false);
16         String preStr = buf.toString();
17         String sign = MD5.sign(preStr, "&key=" + key, "utf-8");
18         map.put("sign", sign);
19         
20         System.out.println("reqUrl:" + reqUrl);
21         
22         CloseableHttpResponse response = null;
23         CloseableHttpClient client = null;
24         try {
25             HttpPost httpPost = new HttpPost(reqUrl);
26             StringEntity entityParams = new StringEntity(XmlUtils.parseXML(map),"utf-8");
27             httpPost.setEntity(entityParams);
28             httpPost.setHeader("Content-Type", "text/xml;charset=ISO-8859-1");
29             client = HttpClients.createDefault();
30             response = client.execute(httpPost);
31             if(response != null && response.getEntity() != null){
32                 Map<String,String> resultMap = XmlUtils.toMap(EntityUtils.toByteArray(response.getEntity()), "utf-8");
33                 res = XmlUtils.toXml(resultMap);
34                 System.out.println("请求结果：" + res);
35                 
36                 if(resultMap.containsKey("sign") && !SignUtils.checkParam(resultMap, key)){
37                     res = "验证签名不通过";
38                 }
39             }else{
40                 res = "操作失败!";
41             }
42         } catch (Exception e) {
43             e.printStackTrace();
44             res = "操作失败";
45         } finally {
46             if(response != null){
47                 response.close();
48             }
49             if(client != null){
50                 client.close();
51             }
52         }
53         if(res.startsWith("<")){
54             resp.setHeader("Content-type", "text/xml;charset=UTF-8");
55         }else{
56             resp.setHeader("Content-type", "text/html;charset=UTF-8");
57         }
58         resp.getWriter().write(res);
59     }