微信扫码支付遇到的问题
原生支付URL参数错误
回调接口URL有回调，但是接收不到参数
商户后台返回的数据字段结构不合法
获取商户订单信息超时或者商户返回的httpcode非200
解决问题
原生支付URL参数错误
这个错误一般会出现在获取到二维码URL之后生成二维码微信扫码的时候。如果你出现此类型的问题请检查
1、生成二维码所需参数列表中参数是否有错误（区分大小写）
2、参数中签名sign时候正确 签名算法 签名校验工具
以下是生成二维码URL的代码
/**
*
* @author Javen
* 2016年5月14日
* 扫码支付获取二维码URL（模式一）
*/
public String getCodeUrl(){
String url="weixin://wxpay/bizpayurl?sign=XXXXX&appid=XXXXX&mch_id=XXXXX&product_id=XXXXX&time_stamp=XXXXX&nonce_str=XXXXX";
String product_id="001";
String timeStamp=Long.toString(System.currentTimeMillis() / 1000);
String nonceStr=Long.toString(System.currentTimeMillis());
Map<String, String> packageParams = new HashMap<String, String>();
packageParams.put("appid", appid);
packageParams.put("mch_id", partner);
packageParams.put("product_id",product_id);
packageParams.put("time_stamp", timeStamp);
packageParams.put("nonce_str", nonceStr);
String packageSign = PaymentKit.createSign(packageParams, paternerKey);
return StringUtils.replace(url, "XXXXX", packageSign,appid,partner,product_id,timeStamp,nonceStr);
}回调接口URL有回调，但是接收不到参数
Enumeration
while (en.hasMoreElements()) {
Object o= en.nextElement();
System.out.println(o.toString()+"="+getPara(o.toString()));
}以上代码中输出的参数都为NULL
由于官方的文档描述不是很清楚，大家都以为回调请求将带productid和用户的openid等参数是以普通的参数一样，其实这个回调返回的参数是一个XML输入流
HttpServletRequest request = getRequest();
/**
* 获取用户扫描二维码后，微信返回的信息
*/
InputStream inStream = request.getInputStream();
ByteArrayOutputStream outSteam = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int len = 0;
while ((len = inStream.read(buffer)) != -1) {
outSteam.write(buffer, 0, len);
}
outSteam.close();
inStream.close();
String result = new String(outSteam.toByteArray(),"utf-8");result结果为
public void wxpay(){
try {
HttpServletRequest request = getRequest();
/**
* 获取用户扫描二维码后，微信返回的信息
*/
InputStream inStream = request.getInputStream();
ByteArrayOutputStream outSteam = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int len = 0;
while ((len = inStream.read(buffer)) != -1) {
outSteam.write(buffer, 0, len);
}
outSteam.close();
inStream.close();
String result = new String(outSteam.toByteArray(),"utf-8");
System.out.println("callback>>>>"+result);
/**
* 获取返回的信息内容中各个参数的值
*/
Map<String, String> map = PaymentKit.xmlToMap(result);
for (String key : map.keySet()) {
System.out.println("key= "+ key + " and value= " + map.get(key));
}
String appid=map.get("appid");
String openid = map.get("openid");
String mch_id = map.get("mch_id");
String is_subscribe = map.get("is_subscribe");
String nonce_str = map.get("nonce_str");
String product_id = map.get("product_id");
String sign = map.get("sign");
Map<String, String> packageParams = new HashMap<String, String>();
packageParams.put("appid", appid);
packageParams.put("openid", openid);
packageParams.put("mch_id",mch_id);
packageParams.put("is_subscribe",is_subscribe);
packageParams.put("nonce_str",nonce_str);
packageParams.put("product_id", product_id);
String packageSign = PaymentKit.createSign(packageParams, paternerKey);
// 统一下单文档地址：https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=9_1
Map<String, String> params = new HashMap<String, String>();
params.put("appid", appid);
params.put("mch_id", mch_id);
params.put("body", "测试扫码支付");
String out_trade_no=Long.toString(System.currentTimeMillis());
params.put("out_trade_no", out_trade_no);
int price=((int)(Float.valueOf(10)*100));
params.put("total_fee", price+"");
params.put("attach", out_trade_no);
String ip = IpKit.getRealIp(getRequest());
if (StrKit.isBlank(ip)) {
ip = "127.0.0.1";
}
params.put("spbill_create_ip", ip);
params.put("trade_type", TradeType.NATIVE.name());
params.put("nonce_str", System.currentTimeMillis() / 1000 + "");
params.put("notify_url", notify_url);
params.put("openid", openid);
String paysign = PaymentKit.createSign(params, paternerKey);
params.put("sign", paysign);
String xmlResult = PaymentApi.pushOrder(params);
System.out.println("prepay_xml>>>"+xmlResult);
/**
* 发送信息给微信服务器
*/
Map<String, String> payResult = PaymentKit.xmlToMap(xmlResult);
String return_code = payResult.get("return_code");
String result_code = payResult.get("result_code");
if (StrKit.notBlank(return_code) && StrKit.notBlank(result_code) && return_code.equalsIgnoreCase("SUCCESS")&&result_code.equalsIgnoreCase("SUCCESS")) {
// 以下字段在return_code 和result_code都为SUCCESS的时候有返回
String prepay_id = payResult.get("prepay_id");
Map<String, String> prepayParams = new HashMap<String, String>();
prepayParams.put("return_code", "SUCCESS");
prepayParams.put("appId", appid);
prepayParams.put("mch_id", mch_id);
prepayParams.put("nonceStr", System.currentTimeMillis() + "");
prepayParams.put("prepay_id", prepay_id);
String prepaySign = null;
if (sign.equals(packageSign)) {
prepayParams.put("result_code", "SUCCESS");
}else {
prepayParams.put("result_code", "FAIL");
prepayParams.put("err_code_des", "订单失效"); //result_code为FAIL时，添加该键值对，value值是微信告诉客户的信息
}
prepaySign = PaymentKit.createSign(prepayParams, paternerKey);
prepayParams.put("sign", prepaySign);
String xml = PaymentKit.toXml(prepayParams);
log.error(xml);
renderText(xml);
}
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}以上是微信扫码支付模式的详细内容。更多信息请关注PHP中文网其他相关文章！
