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用H5调用支付微信公众号支付的解析-

这篇文章主要为大家详细介绍了微信公众号支付H5调用支付,具有一定的参考价值,感兴趣的小伙伴们可以参考一下
这篇文章主要为大家详细介绍了微信公众号支付H5调用支付,具有一定的参考价值,感兴趣的小伙伴们可以参考一下

最近项目需要微信支付,然后看了下微信公众号支付,虽然不难,但是细节还是需要注意的,用了大半天时间写了个demo,并且完整的测试了一下支付流程,下面分享一下微信公众号支付的经验。

一、配置公众号微信支付

需要我们配置微信公众号支付地址和测试白名单。

在微信中发送如下链接

https://open.weixin.qq.com/connect/oauth2/authorize?appid=wx520c15f417810387&redirect_uri=要跳转的下订单的url&response_type=code&scope=snsapi_base&state=123#wechat_redirect

3.2 后台支付

代码如下,包含预处理订单,支付订单等接口。

package org.andy.controller; 
 
import java.io.ByteArrayInputStream; 
import java.io.IOException; 
import java.io.InputStream; 
import java.io.UnsupportedEncodingException; 
import java.util.Date; 
import java.util.HashMap; 
import java.util.Iterator; 
import java.util.Map; 
import java.util.Map.Entry; 
import java.util.Random; 
 
import javax.servlet.ServletInputStream; 
import javax.servlet.http.HttpServletRequest; 
import javax.servlet.http.HttpServletResponse; 
 
import org.apache.commons.codec.digest.DigestUtils; 
import org.springframework.stereotype.Controller; 
import org.springframework.web.bind.annotation.RequestMapping; 
import org.xmlpull.v1.XmlPullParser; 
import org.xmlpull.v1.XmlPullParserException; 
import org.xmlpull.v1.XmlPullParserFactory; 
 
import com.fasterxml.jackson.databind.JsonNode; 
import com.gson.oauth.Oauth; 
import com.gson.oauth.Pay; 
import com.gson.util.HttpKit; 
import com.gson.util.Tools; 
import org.andy.util.DatetimeUtil; 
import org.andy.util.JsonUtil; 
import org.andy.util.SessionUtil; 
import org.andy.util.WebUtil; 
 
@Controller 
@RequestMapping("/pay") 
public class WXPayController { 
 
 @RequestMapping(value = "wxprepay") 
 public void jspay(HttpServletRequest request, HttpServletResponse response, String callback) throws Exception { 
 // 获取openid 
 String openId = SessionUtil.getAtt(request, "openId"); 
 if (openId == null) { 
 openId = getUserOpenId(request); 
 } 
 
 String appid = "wx16691fcb0523c1a4"; 
 String partnerid = "22223670"; 
 String paternerKey = "fjfjfjfjf1234567FFFFFFFFF1234567"; 
 
 String out_trade_no = getTradeNo(); 
 Map paraMap = new HashMap(); 
 paraMap.put("appid", appid); 
 paraMap.put("attach", "测试支付"); 
 paraMap.put("body", "测试购买Beacon支付"); 
 paraMap.put("mch_id", partnerid); 
 paraMap.put("nonce_str", create_nonce_str()); 
 paraMap.put("openid", openId); 
 paraMap.put("out_trade_no", out_trade_no); 
 paraMap.put("spbill_create_ip", getAddrIp(request)); 
 paraMap.put("total_fee", "1"); 
 paraMap.put("trade_type", "JSAPI"); 
 paraMap.put("notify_url", "http://www.xxx.co/wxpay/pay/appPay_notify.shtml"); 
 String sign = getSign(paraMap, paternerKey); 
 paraMap.put("sign", sign); 
 
 // 统一下单 https://api.mch.weixin.qq.com/pay/unifiedorder 
 String url = "https://api.mch.weixin.qq.com/pay/unifiedorder"; 
 
 String xml = ArrayToXml(paraMap, false); 
 
 String xmlStr = HttpKit.post(url, xml); 
 
 // 预付商品id 
 String prepay_id = ""; 
 
 if (xmlStr.indexOf("SUCCESS") != -1) { 
 Map map = doXMLParse(xmlStr); 
 prepay_id = (String) map.get("prepay_id"); 
 } 
 
 Map payMap = new HashMap(); 
 payMap.put("appId", appid); 
 payMap.put("timeStamp", create_timestamp()); 
 payMap.put("nonceStr", create_nonce_str()); 
 payMap.put("signType", "MD5"); 
 payMap.put("package", "prepay_id=" + prepay_id); 
 String paySign = getSign(payMap, paternerKey); 
 
 payMap.put("pg", prepay_id); 
 payMap.put("paySign", paySign); 
 
 
 WebUtil.response(response, WebUtil.packJsonp(callback, JsonUtil.warpJsonNodeResponse(JsonUtil.objectToJsonNode(payMap)).toString())); 
 } 
 
 @RequestMapping(value = "appPay") 
 public void appPay(HttpServletRequest request, HttpServletResponse response, String body, String detail, String total_fee, String spbill_create_ip, 
 String notify_url, String trade_type, String callback) throws Exception { 
 
 String appid = "wx16691fcb0523c1a4"; 
 String partnerid = "22223670"; 
 String paternerKey = "fjfjfjfjf1234567FFFFFFFFF1234567"; 
 
 String out_trade_no = getTradeNo(); 
 Map paraMap = new HashMap(); 
 paraMap.put("appid", appid); 
 paraMap.put("body", body); 
 paraMap.put("mch_id", partnerid); 
 paraMap.put("nonce_str", create_nonce_str()); 
 paraMap.put("out_trade_no", out_trade_no); 
 paraMap.put("spbill_create_ip", spbill_create_ip); 
 paraMap.put("total_fee", total_fee); 
 paraMap.put("trade_type", trade_type); 
 paraMap.put("notify_url", notify_url); 
 String sign = getSign(paraMap, paternerKey); 
 paraMap.put("sign", sign); 
 
 // 统一下单 https://api.mch.weixin.qq.com/pay/unifiedorder 
 String url = "https://api.mch.weixin.qq.com/pay/unifiedorder"; 
 
 String xml = ArrayToXml(paraMap, false); 
 
 String xmlStr = HttpKit.post(url, xml); 
 
 // 预付商品id 
 String prepay_id = ""; 
 
 Map map = doXMLParse(xmlStr); 
 if (xmlStr.indexOf("SUCCESS") != -1) { 
 prepay_id = (String) map.get("prepay_id"); 
 } 
 
 String result_code = map.get("result_code"); 
 String err_code_des = map.get("err_code_des"); 
 Map payMap = new HashMap(); 
 payMap.put("appid", appid); 
 payMap.put("partnerid", partnerid); 
 payMap.put("prepayid", prepay_id); 
 payMap.put("package", "Sign=WXPay"); 
 payMap.put("noncestr", create_nonce_str()); 
 payMap.put("timestamp", create_timestamp()); 
 String paySign = getSign(payMap, paternerKey); 
 
 payMap.put("sign", paySign); 
 payMap.put("result_code", result_code); 
 payMap.put("err_code_des", err_code_des); 
 
 
 WebUtil.response(response, WebUtil.packJsonp(callback, JsonUtil.warpJsonNodeResponse(JsonUtil.objectToJsonNode(payMap)).toString())); 
 } 
 
 @RequestMapping("/appPay_notify") 
 public void appPayNotify(HttpServletRequest request, HttpServletResponse response) throws Exception{ 
 //String xml = "1"; 
 response.setCharacterEncoding("UTF-8"); 
 response.setContentType("text/xml"); 
 ServletInputStream in = request.getInputStream(); 
 String xmlMsg = Tools.inputStream2String(in); 
 
 Map map = doXMLParse(xmlMsg); 
 String return_code = map.get("return_code"); 
 String return_msg = map.get("return_msg"); 
 
 map = new HashMap(); 
 map.put("return_code", return_code); 
 map.put("return_msg", return_msg); 
 
 //响应xml 
 String resXml = ArrayToXml(map, true); 
 response.getWriter().write(resXml); 
 } 
 
 @RequestMapping("/orderquery.do") 
 public void orderquery(HttpServletRequest request, HttpServletResponse response, String transaction_id, String out_trade_no, String callback) throws Exception{ 
 
 String url = "https://api.mch.weixin.qq.com/pay/orderquery"; 
 
 String appid = "wx16691fcb0523c1a4"; 
 String partnerid = "22223670"; 
 String paternerKey = "fjfjfjfjf1234567FFFFFFFFF1234567"; 
 
 Map map = new HashMap(); 
 map.put("appid", appid); 
 map.put("mch_id", partnerid); 
 if(transaction_id != null && !transaction_id.equals("")){ 
 map.put("transaction_id", transaction_id); 
 }else { 
 map.put("out_trade_no", out_trade_no); 
 } 
 map.put("nonce_str", create_nonce_str()); 
 String paySign = getSign(map, paternerKey); 
 map.put("sign", paySign); 
 
 String xml = ArrayToXml(map, false); 
 String xmlStr = HttpKit.post(url, xml); 
 
 Map orderMap = doXMLParse(xmlStr); 
 
 
 WebUtil.response(response, WebUtil.packJsonp(callback, JsonUtil.warpJsonNodeResponse(JsonUtil.objectToJsonNode(orderMap)).toString())); 
 } 
 
 /** 
 * map转成xml 
 * 
 * @param arr 
 * @return 
 */ 
 public String ArrayToXml(Map parm, boolean isAddCDATA) { 
 StringBuffer strbuff = new StringBuffer(); 
 if (parm != null ) { 
 for (Entry entry : parm.entrySet()) { 
 strbuff.append("<").append(entry.getKey()).append(">"); 
 if (isAddCDATA) { 
  strbuff.append(); 
 }else { 
  strbuff.append(entry.getValue()); 
 } 
 strbuff.append("<").append(entry.getKey()).append(">"); 
 } 
 } 
 return strbuff.append().toString(); 
 } 
 
 // 获取openId 
 private String getUserOpenId(HttpServletRequest request) throws Exception { 
 String code = request.getParameter("code"); 
 if (code == null) { 
 String openId = request.getParameter("openId"); 
 return openId; 
 } 
 Oauth o = new Oauth(); 
 String token = o.getToken(code); 
 JsonNode node = JsonUtil.StringToJsonNode(token); 
 String openId = node.get("openid").asText(); 
 return openId; 
 } 
 
 private String create_nonce_str() { 
 String chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"; 
 String res = ""; 
 for (int i = 0; i < 16; i++) { 
 Random rd = new Random(); 
 res += chars.charAt(rd.nextInt(chars.length() - 1)); 
 } 
 return res; 
 } 
 
 private String getAddrIp(HttpServletRequest request){ 
 return request.getRemoteAddr(); 
 } 
 
 private String create_timestamp() { 
 return Long.toString(System.currentTimeMillis() / 1000); 
 } 
 
 private String getTradeNo(){ 
 String timestamp = DatetimeUtil.formatDate(new Date(), DatetimeUtil.DATETIME_PATTERN); 
 return "HZNO" + timestamp; 
 } 
 
 private String getSign(Map params, String paternerKey ) 
 throws UnsupportedEncodingException { 
 String string1 = Pay.createSign(params, false); 
 String stringSignTemp = string1 + "&key=" + paternerKey; 
 String signValue = DigestUtils.md5Hex(stringSignTemp).toUpperCase(); 
 return signValue; 
 } 
 
 private Map doXMLParse(String xml) 
 throws XmlPullParserException, IOException { 
 
 InputStream inputStream = new ByteArrayInputStream(xml.getBytes()); 
 
 Map map = null; 
 
 XmlPullParser pullParser = XmlPullParserFactory.newInstance() 
 .newPullParser(); 
 
 pullParser.setInput(inputStream, "UTF-8"); // 为xml设置要解析的xml数据 
 
 int eventType = pullParser.getEventType(); 
 
 while (eventType != XmlPullParser.END_DOCUMENT) { 
 switch (eventType) { 
 case XmlPullParser.START_DOCUMENT: 
 map = new HashMap(); 
 break; 
 
 case XmlPullParser.START_TAG: 
 String key = pullParser.getName(); 
 if (key.equals("xml")) 
  break; 
 
 String value = pullParser.nextText(); 
 map.put(key, value); 
 
 break; 
 
 case XmlPullParser.END_TAG: 
 break; 
 
 } 
 
 eventType = pullParser.next(); 
 
 } 
 
 return map; 
 } 
 
}

wxprepay.shtm接口是预处理订单接口向微信服务器下订单。
appPay.shtml接口是支付接口。
appPay_notify.shtml接口是微信支付后异步通知结果接口。
orderquery.shtml接口是订单查询接口

3.3、涉及到的工具类
SessionUtil.java工具类

package org.andy.util; 
 
import javax.servlet.http.HttpServletRequest; 
 
 
public class SessionUtil { 
 public static void addAtt(HttpServletRequest request, String key, Object value){ 
 request.getSession().setAttribute(key, value); 
 } 
 
 public static void removeAtt(HttpServletRequest request, String key){ 
 request.getSession().removeAttribute(key); 
 } 
 
 public static String getAtt(HttpServletRequest request, String key){ 
 return (String)request.getSession().getAttribute(key); 
 } 
 
 public static Object getAttObj(HttpServletRequest request, String key){ 
 return request.getSession().getAttribute(key); 
 } 
 
 public static String optAtt(HttpServletRequest request, String key, String value){ 
 String r = (String)request.getSession().getAttribute(key); 
 if (r == null){ 
 r = value; 
 } 
 return r; 
 } 
 
}

HttpKit 网络请求工具类

/** 
 * https 请求 微信为https的请求 
 * 
 * @author andy 
 * @date 2015-10-9 下午2:40:19 
 */ 
public class HttpKit { 
 private static final String DEFAULT_CHARSET = "UTF-8"; 
 /** 
 * @return 返回类型: 
 * @throws IOException 
 * @throws UnsupportedEncodingException 
 * @throws NoSuchProviderException 
 * @throws NoSuchAlgorithmException 
 * @throws KeyManagementException 
 * @description 功能描述: get 请求 
 */ 
 public static String get(String url, Map params, Map headers) throws IOException, ExecutionException, InterruptedException { 
 AsyncHttpClient http = new AsyncHttpClient(); 
 AsyncHttpClient.BoundRequestBuilder builder = http.prepareGet(url); 
 builder.setBodyEncoding(DEFAULT_CHARSET); 
 if (params != null && !params.isEmpty()) { 
 Set keys = params.keySet(); 
 for (String key : keys) { 
 builder.addQueryParameter(key, params.get(key)); 
 } 
 } 
 
 if (headers != null && !headers.isEmpty()) { 
 Set keys = headers.keySet(); 
 for (String key : keys) { 
 builder.addHeader(key, params.get(key)); 
 } 
 } 
 Future f = builder.execute(); 
 String body = f.get().getResponseBody(DEFAULT_CHARSET); 
 http.close(); 
 return body; 
 } 
 
 /** 
 * @return 返回类型: 
 * @throws IOException 
 * @throws UnsupportedEncodingException 
 * @throws NoSuchProviderException 
 * @throws NoSuchAlgorithmException 
 * @throws KeyManagementException 
 * @description 功能描述: get 请求 
 */ 
 public static String get(String url) throws KeyManagementException, NoSuchAlgorithmException, NoSuchProviderException, UnsupportedEncodingException, IOException, ExecutionException, InterruptedException { 
 return get(url, null); 
 } 
 
 /** 
 * @return 返回类型: 
 * @throws IOException 
 * @throws NoSuchProviderException 
 * @throws NoSuchAlgorithmException 
 * @throws KeyManagementException 
 * @throws UnsupportedEncodingException 
 * @description 功能描述: get 请求 
 */ 
 public static String get(String url, Map params) throws KeyManagementException, NoSuchAlgorithmException, NoSuchProviderException, UnsupportedEncodingException, IOException, ExecutionException, InterruptedException { 
 return get(url, params, null); 
 } 
 
 /** 
 * @return 返回类型: 
 * @throws IOException 
 * @throws NoSuchProviderException 
 * @throws NoSuchAlgorithmException 
 * @throws KeyManagementException 
 * @description 功能描述: POST 请求 
 */ 
 public static String post(String url, Map params) throws IOException, ExecutionException, InterruptedException { 
 AsyncHttpClient http = new AsyncHttpClient(); 
 AsyncHttpClient.BoundRequestBuilder builder = http.preparePost(url); 
 builder.setBodyEncoding(DEFAULT_CHARSET); 
 if (params != null && !params.isEmpty()) { 
 Set keys = params.keySet(); 
 for (String key : keys) { 
 builder.addParameter(key, params.get(key)); 
 } 
 } 
 Future f = builder.execute(); 
 String body = f.get().getResponseBody(DEFAULT_CHARSET); 
 http.close(); 
 return body; 
 } 
 
 public static String post(String url, String s) throws IOException, ExecutionException, InterruptedException { 
 AsyncHttpClient http = new AsyncHttpClient(); 
 AsyncHttpClient.BoundRequestBuilder builder = http.preparePost(url); 
 builder.setBodyEncoding(DEFAULT_CHARSET); 
 builder.setBody(s); 
 Future f = builder.execute(); 
 String body = f.get().getResponseBody(DEFAULT_CHARSET); 
 http.close(); 
 return body; 
 } 
 
}

支付工具类pay.java

/** 
 * 支付相关方法 
 * @author andy 
 * 
 */ 
public class Pay { 
 
 // 发货通知接口 
 private static final String DELIVERNOTIFY_URL = "https://api.weixin.qq.com/pay/delivernotify?access_token="; 
 
 /** 
 * 参与 paySign 签名的字段包括:appid、timestamp、noncestr、package 以及 appkey。 
 * 这里 signType 并不参与签名微信的Package参数 
 * @param params 
 * @return 
 * @throws UnsupportedEncodingException 
 */ 
 public static String getPackage(Map params) throws UnsupportedEncodingException { 
 String partnerKey = ConfKit.get("partnerKey"); 
 String partnerId = ConfKit.get("partnerId"); 
 String notifyUrl = ConfKit.get("notify_url"); 
 // 公共参数 
 params.put("bank_type", "WX"); 
 params.put("attach", "yongle"); 
 params.put("partner", partnerId); 
 params.put("notify_url", notifyUrl); 
 params.put("input_charset", "UTF-8"); 
 return packageSign(params, partnerKey); 
 } 
 
 /** 
 * 构造签名 
 * @param params 
 * @param encode 
 * @return 
 * @throws UnsupportedEncodingException 
 */ 
 public static String createSign(Map params, boolean encode) throws UnsupportedEncodingException { 
 Set keysSet = params.keySet(); 
 Object[] keys = keysSet.toArray(); 
 Arrays.sort(keys); 
 StringBuffer temp = new StringBuffer(); 
 boolean first = true; 
 for (Object key : keys) { 
 if (first) { 
 first = false; 
 } else { 
 temp.append("&"); 
 } 
 temp.append(key).append("="); 
 Object value = params.get(key); 
 String valueString = ""; 
 if (null != value) { 
 valueString = value.toString(); 
 } 
 if (encode) { 
 temp.append(URLEncoder.encode(valueString, "UTF-8")); 
 } else { 
 temp.append(valueString); 
 } 
 } 
 return temp.toString(); 
 } 
 
 /** 
 * @param params 
 * @param paternerKey 
 * @return 
 * @throws UnsupportedEncodingException 
 */ 
 private static String packageSign(Map params, String paternerKey) throws UnsupportedEncodingException { 
 String string1 = createSign(params, false); 
 String stringSignTemp = string1 + "&key=" + paternerKey; 
 String signValue = DigestUtils.md5Hex(stringSignTemp).toUpperCase(); 
 String string2 = createSign(params, true); 
 return string2 + "&sign=" + signValue; 
 } 
 
 /** 
 * 支付签名 
 * @param timestamp 
 * @param noncestr 
 * @param packages 
 * @return 
 * @throws UnsupportedEncodingException 
 */ 
 public static String paySign(String timestamp, String noncestr,String packages) throws UnsupportedEncodingException { 
 Map paras = new HashMap(); 
 paras.put("appid", ConfKit.get("AppId")); 
 paras.put("timestamp", timestamp); 
 paras.put("noncestr", noncestr); 
 paras.put("package", packages); 
 paras.put("appkey", ConfKit.get("paySignKey")); 
 // appid、timestamp、noncestr、package 以及 appkey。 
 String string1 = createSign(paras, false); 
 String paySign = DigestUtils.shaHex(string1); 
 return paySign; 
 } 
 
 /** 
 * 支付回调校验签名 
 * @param timestamp 
 * @param noncestr 
 * @param openid 
 * @param issubscribe 
 * @param appsignature 
 * @return 
 * @throws UnsupportedEncodingException 
 */ 
 public static boolean verifySign(long timestamp, 
 String noncestr, String openid, int issubscribe, String appsignature) throws UnsupportedEncodingException { 
 Map paras = new HashMap(); 
 paras.put("appid", ConfKit.get("AppId")); 
 paras.put("appkey", ConfKit.get("paySignKey")); 
 paras.put("timestamp", String.valueOf(timestamp)); 
 paras.put("noncestr", noncestr); 
 paras.put("openid", openid); 
 paras.put("issubscribe", String.valueOf(issubscribe)); 
 // appid、appkey、productid、timestamp、noncestr、openid、issubscribe 
 String string1 = createSign(paras, false); 
 String paySign = DigestUtils.shaHex(string1); 
 return paySign.equalsIgnoreCase(appsignature); 
 } 
 
 /** 
 * 发货通知签名 
 * @param paras 
 * @return 
 * @throws UnsupportedEncodingException 
 * 
 * @参数 appid、appkey、openid、transid、out_trade_no、deliver_timestamp、deliver_status、deliver_msg; 
 */ 
 private static String deliverSign(Map paras) throws UnsupportedEncodingException { 
 paras.put("appkey", ConfKit.get("paySignKey")); 
 String string1 = createSign(paras, false); 
 String paySign = DigestUtils.shaHex(string1); 
 return paySign; 
 } 
 
 
 /** 
 * 发货通知 
 * @param access_token 
 * @param openid 
 * @param transid 
 * @param out_trade_no 
 * @return 
 * @throws IOException 
 * @throws NoSuchProviderException 
 * @throws NoSuchAlgorithmException 
 * @throws KeyManagementException 
 * @throws InterruptedException 
 * @throws ExecutionException 
 */ 
 
 public static boolean delivernotify(String access_token, String openid, String transid, String out_trade_no) throws IOException, ExecutionException, InterruptedException { 
 Map paras = new HashMap(); 
 paras.put("appid", ConfKit.get("AppId")); 
 paras.put("openid", openid); 
 paras.put("transid", transid); 
 paras.put("out_trade_no", out_trade_no); 
 paras.put("deliver_timestamp", (System.currentTimeMillis() / 1000) + ""); 
 paras.put("deliver_status", "1"); 
 paras.put("deliver_msg", "ok"); 
 // 签名 
 String app_signature = deliverSign(paras); 
 paras.put("app_signature", app_signature); 
 paras.put("sign_method", "sha1"); 
 String json = HttpKit.post(DELIVERNOTIFY_URL.concat(access_token), JSONObject.toJSONString(paras)); 
 if (StringUtils.isNotBlank(json)) { 
 JSONObject object = JSONObject.parseObject(json); 
 if (object.containsKey("errcode")) { 
 int errcode = object.getIntValue("errcode"); 
 return errcode == 0; 
 } 
 } 
 return false; 
 } 
}

流转化Tools.java工具类

public final class Tools { 
 
 public static final String inputStream2String(InputStream in) throws UnsupportedEncodingException, IOException{ 
 if(in == null) 
 return ""; 
 
 StringBuffer out = new StringBuffer(); 
 byte[] b = new byte[4096]; 
 for (int n; (n = in.read(b)) != -1;) { 
 out.append(new String(b, 0, n, "UTF-8")); 
 } 
 return out.toString(); 
 } 
 
 public static final boolean checkSignature(String token,String signature,String timestamp,String nonce){ 
 List params = new ArrayList(); 
 params.add(token); 
 params.add(timestamp); 
 params.add(nonce); 
 Collections.sort(params,new Comparator() { 
 @Override 
 public int compare(String o1, String o2) { 
 return o1.compareTo(o2); 
 } 
 }); 
 String temp = params.get(0)+params.get(1)+params.get(2); 
 return SHA1.encode(temp).equals(signature); 
 } 
}

相应前端数据工具WebUtil.java工具类

public class WebUtil { 
 
 public static Object getSessionAttribute(HttpServletRequest req, String key) { 
 Object ret = null; 
 
 try { 
 ret = req.getSession(false).getAttribute(key); 
 } catch (Exception e) { 
 } 
 return ret; 
 } 
 
 public static void response(HttpServletResponse response, String result) { 
 try { 
 response.setContentType("application/json;charset=utf-8"); 
 response.getWriter().write(result); 
 } catch (IOException e) { 
 e.printStackTrace(); 
 } 
 
 } 
 
 public static void response(HttpServletResponse response, ResponseMessage result) { 
 try { 
 response.setContentType("application/json;charset=utf-8"); 
 response.getWriter().write(JsonUtil.objectToJsonNode(result).toString()); 
 } catch (Exception e) { 
 e.printStackTrace(); 
 } 
 } 
 
 public static String packJsonp(String callback, String json) { 
 if (json == null) { 
 json = ""; 
 } 
 if (callback == null || callback.isEmpty()) { 
 return json; 
 } 
 
 return callback + "&&" + callback + '(' + json + ')'; 
 } 
 
 public static String packJsonp(String callback, ResponseMessage response) { 
 String json = null; 
 if (response == null) { 
 json = ""; 
 } else { 
 json = JsonUtil.objectToJsonNode(response).toString(); 
 } 
 if (callback == null || callback.isEmpty()) { 
 return json; 
 } 
 
 return callback + "&&" + callback + '(' + json + ')'; 
 } 
}

Json转换工具JsonUtil.java

public class JsonUtil { 
 
 public static ObjectNode warpJsonNodeResponse(JsonNode obj){ 
 ObjectNode objectNode=createObjectNode(); 
 objectNode.put("code", 1); 
 objectNode.put("response", obj); 
 return objectNode; 
 } 
 
 public static JsonNode objectToJsonNode(Object obj){ 
 try { 
 ObjectMapper objectMapper = new ObjectMapper(); 
 String objJson=objectMapper.writeValueAsString(obj); 
 JsonNode jsonNode = objectMapper.readTree(objJson); 
 return jsonNode; 
 } catch (JsonProcessingException e) { 
 e.printStackTrace(); 
 } catch (IOException e) { 
 // TODO Auto-generated catch block 
 e.printStackTrace(); 
 } 
 return null; 
 } 
 
}

四、微信H5调起支付

这个url需要后台实现,其实现功能如下:
1、接受微信服务器端发送的支付结果。
2、向微信服务器发送支付结果

具体 参考微信aip(http://pay.weixin.qq.com/wiki/doc/api/index.php?chapter=9_7)
具体代码如下:
4.1、授权向后台发起生成统一下订单页面
wxrepay.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> 
<%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %> 
<% 
 String path = request.getContextPath(); 
 String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/"; 
 long t = System.currentTimeMillis(); 
%> 
 
 
 
 
 
 
 
 
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